Tactical Reroll
⋯

Tyranids: rules coverage (2026-10-02)

From reports/tiers/2026-10-02-tyranids-coverage.md , rendered when the site is built.

T-541, the first batch of T-542 (Jordan, 2 Oct, before sleeping: "add all special rules to units, all detachment rules, at the very least"). Made by node tools/coverage.js --faction "Xenos - Tyranids" from docs/data/unitfx.json, leaderfx.json, detfx.json and armyfx.json; each ability read on Wahapedia's 11th-edition pages and written in our own words. A report: the calculator reads the dice effects (units' own behind flags.json's "unitfx"); nothing here changes a published score or letter.

Statuses. Modelled: the dice effect is all of it. Partly: some of it is dice, the rest noted. Noted: nothing for the dice; where it would be, can't yet says what the engine lacks. Unread: not in our data yet. An effect that starts off in the calculator (a damaged bracket, a rare condition) is marked so; the player switches it on.

Totals

CountModelledPartlyNotedUnread
Datasheets (non-Legends)56 of 59 read324293
Datasheets (Legends)5 of 5 read0410
Datasheet abilities15130117436
Detachment rules2825210
Enhancements41104270
Army rules (armyfx.json)21010

A datasheet counts as modelled when every ability on it is dice, partly when some are, noted when none are.

What's here. Every Tyranid datasheet in BSData's catalogue at our commit (64: 59 non-Legends, 5 Legends) against Wahapedia's 11th-edition datasheets, read on 2 Oct. 61 are written. The three Crucible organisms (Macro, Node and Prime Organism) aren't on Wahapedia's 11th-edition Tyranid page, so they are left unread rather than guessed. Their 36 abilities are most of the unread count. The 14 detachments are the 10 matched-play ones (Invasion Fleet, Crusher Stampede, Unending Swarm, Assimilation Swarm, Vanguard Onslaught, Synaptic Nexus, Subterranean Assault, Ambush Predators, Talons of the Norn Queen and Warrior Bioform Onslaught) and the 4 Boarding Actions ones. Talons of the Norn Queen is the newest. Its rule lets a Norn re-pick Singular Purpose, which is now a two-way choice on both Norns' datasheets.

Decisions taken alone.

Vocabulary gaps, by how many units need each

What the engine would need to model the rest, from each rule's can't yet and kind; a unit counts once per gap.

GapUnitsWhich
Movement: reactive moves, charge after advancing or falling back, an enemy unit slowed16Barbgaunts, Carnifexes, Gargoyles, Hierophant, Hormagaunts, Mucolid Spores, Mucolid Spores (Sporocyst), Norn Assimilator, Spore Mines, Spore Mines (Biovore), Spore Mines (Harpy), Termagants, Toxicrene, Tyranid Prime with Lash Whip, Tyranid Warriors with Ranged Bio-Weapons, Scythed Hierodule [Legends]
Stealth read from the datasheet as cover (core ability)12Deathleaper, Gargoyles, Genestealers, Lictor, Neurolictor, Parasite of Mortrex, Raveners, Tyranid Warriors with Melee Bio-Weapons, Tyranid Warriors with Ranged Bio-Weapons, Venomthropes, Von Ryan's Leapers, Malanthrope [Legends]
Mortal wounds dealt outside attacks (auras, arrivals, explosions)10Harpy, Mawloc, Mucolid Spores, Mucolid Spores (Sporocyst), Norn Assimilator, Spore Mines, Spore Mines (Biovore), Spore Mines (Harpy), Toxicrene, Zoanthropes
Auras on other friendly units in range (the calculator places one unit a side)9Exocrine, Hive Tyrant, Maleceptor, Psychophage, Pyrovores, Tervigon, Venomthropes, Zoanthropes, Malanthrope [Legends]
Command points gained, saved or cost to the enemy8Deathleaper, Hive Tyrant, Hyperadapted Raveners, Lictor, Neurolictor, The Swarmlord, Von Ryan's Leapers, Winged Hive Tyrant
Enemy Battle-shock and Leadership as a result (forced tests, worse Leadership, what a failed test costs)7Deathleaper, Haruspex, Neurolictor, Neurotyrant, Parasite of Mortrex, Screamer-killer, Zoanthropes
Arrival and re-arrival (reserves, tunnels, redeploys, Rapid Ingress)6Hyperadapted Raveners, Lictor, Raveners, The Red Terror, Trygon, Tyrannocyte
Objective Control4Hierophant, Ripper Swarms, Ripper Swarms (Parasite of Mortrex), Sky-slasher Swarms [Legends]
Healing and returned models between turns4Old One Eye, Tervigon, The Red Terror, Dimachaeron [Legends]
Units added during the game3Biovores, Parasite of Mortrex, Sporocyst
A mark one unit puts on an enemy for its friends3Exocrine, Psychophage, Pyrovores
Overwatch2Hive Guard, Sporocyst
Critical on any successful wound roll1The Red Terror
Toughness modifier on defence1Tyranid Warriors with Melee Bio-Weapons
A single-die re-roll, or one attack's damage cancelled once1Tyrannofex
Feel No Pain on a leader's or bearer's model only (selfFnp)1Tyrant Guard
Attacks lost by the enemy (an attacks-minus on defence)1Winged Hive Tyrant
Fighting again after being slain1Winged Tyranid Prime

Datasheets

UnitStatusAbilitiesModelledPartlyNoted
Barbgauntsnoted1001
Biovoresnoted1001
Broodlordmodelled2200
Carnifexesnoted1001
Deathleapernoted3003
Exocrinepartly2101
Gargoylesnoted1001
Genestealersmodelled1100
Harpypartly2101
Harridanpartly2110
Haruspexpartly2101
Hierophantpartly3111
Hive Cronemodelled2200
Hive Guardnoted1001
Hive Tyrantpartly2011
Hormagauntsnoted1001
Hyperadapted Ravenerspartly3201
Lictornoted2002
Macro Organism [Crucible]unread12000
Maleceptorpartly2110
Mawlocpartly2101
Mucolid Sporesnoted2002
Mucolid Spores (Sporocyst)noted2002
Neurogauntsnoted1001
Neurolictorpartly3012
Neurotyrantpartly3102
Node Organism [Crucible]unread12000
Norn Assimilatorpartly5113
Norn Emissarypartly4211
Old One Eyepartly2101
Parasite of Mortrexnoted2002
Prime Organism [Crucible]unread12000
Psychophagepartly2101
Pyrovoresnoted1001
Ravenersnoted1001
Ripper Swarmsnoted1001
Ripper Swarms (Parasite of Mortrex)noted1001
Screamer-killernoted1001
Spore Minesnoted2002
Spore Mines (Biovore)noted2002
Spore Mines (Harpy)noted2002
Sporocystnoted2002
Termagantsnoted1001
Tervigonpartly3102
The Red Terrorpartly2011
The Swarmlordnoted4004
Toxicrenepartly3102
Trygonpartly2101
Tyranid Prime with Lash Whippartly2101
Tyranid Warriors with Melee Bio-Weaponspartly1010
Tyranid Warriors with Ranged Bio-Weaponsnoted1001
Tyrannocytenoted1001
Tyrannofexpartly2101
Tyrant Guardnoted1001
Venomthropespartly1010
Von Ryan's Leapersnoted1001
Winged Hive Tyrantnoted2002
Winged Tyranid Primepartly2101
Zoanthropesnoted2002
Barbed Hierodule [Legends]Legendspartly2110
Dimachaeron [Legends]Legendspartly2101
Malanthrope [Legends]Legendspartly2101
Scythed Hierodule [Legends]Legendspartly2101
Sky-slasher Swarms [Legends]Legendsnoted1001

Every ability

UnitAbilityStatusKindWhat it does (our words)Can't yet
BarbgauntsDisruption Bombardmentnotedenemyslows an infantry unit it hit: -2" to Move, Advance and Chargean enemy unit's movement isn't in the maths
BiovoresSeed Spore Minesnotedspawnplaces a new Spore Mines unit instead of shootingunits added during the game aren't in the dice (the tier test's spawn kind, T-524 round 5)
BroodlordHypnotic Gaze (Psychic)modelled-1 to be hit in melee (Hypnotic Gaze)
BroodlordVicious Insightmodelledleadleading: Devastating Wounds for its unit (leaderfx.json)
CarnifexesBlistering Assaultnotedmovesurges up to D6+2" after being shotmoves made in the enemy's turn aren't in the maths
DeathleaperFear of the Unseen (Aura)notedshockenemies within 6" lose 1 Leadership; hurt ones test Battle-shockthe enemy's Leadership and Battle-shock aren't dice we roll yet
DeathleaperHunter Organismnotedlistcan't be your Warlord (lost in Vanguard Onslaught)
DeathleaperFeeder Tendrilsnotedcp1 CP for each enemy character it killscommand points aren't in the dice
ExocrineSymbiotic Targetingnotedmarkfriends re-roll 1s to hit the unit it shot this phasea mark one unit puts on an enemy for other units isn't in the maths
ExocrineDamaged: 1-5 Wounds Remainingmodelled-1 to hit while badly wounded (starts off)
GargoylesWinged Swarmnotedmovemoves 6" after shooting, then can't charge
GenestealersVanguard PredatormodelledRe-roll hit rolls of 1; Re-roll wound 1s (target on objective)
HarpySpore Mine Cystsnotedmortalafter the enemy's Fight phase: six dice of mortal wounds at 24", or new Spore Minesmortal wounds outside attacks: data/mortalfx.json feeds the tier test, not the calculator
HarpyDamaged: 1-4 Wounds Remainingmodelled-1 to hit while badly wounded (starts off)
HarridanFrenzied Metabolismpartly+1 to wound (Frenzied Metabolism) (starts off)the mortal wounds it takes after shooting aren't counted
HarridanDamaged: 1-10 wounds remainingmodelled-1 to hit while badly wounded (starts off)
HaruspexGrisly Spectaclenotedshocka kill in melee makes enemies within 6" test Battle-shockthe enemy's Battle-shock isn't a dice result yet
HaruspexDamaged: 1-5 Wounds Remainingmodelled-1 to hit while badly wounded (starts off)
HierophantApex-beastmodelled+1 to hit vs Battle-shocked (starts off)
HierophantStalking Forwardnotedmovewalks over most models and terrain
HierophantDamaged: 1-10 wounds remainingpartlyoc-1 to hit while badly wounded (starts off). also loses 6 Objective Control
Hive CroneAirborne Predatormodelled+1 to hit vs FLY (shooting)
Hive CroneDamaged: 1-4 Wounds Remainingmodelled-1 to hit while badly wounded (starts off)
Hive GuardDefensive Stancenotedoverwatchbetter Overwatch, better still on an objectiveOverwatch isn't in the maths
Hive TyrantOnslaught (Aura, Psychic)partlyauraLethal Hits (shooting, Onslaught)its aura on other units isn't in the calculator (armyfx's aura shape, tier test)
Hive TyrantWill of the Hive Mindnotedcpa Stratagem 1 CP cheaper once a round, within 12"command points aren't in the dice
HormagauntsBounding Leapnotedmovecharges after advancing
Hyperadapted RavenersAlpha InvadermodelledSustained Hits 1
Hyperadapted RavenersHypersensory ArraynotedarrivalStratagem use and cost onlyStratagem use and cost: the tier test's ingress and cp kinds
Hyperadapted RavenersLeadermodelledleadleads Raveners: Alpha Invader's Sustained Hits 1 for them (leaderfx.json)
LictorFeeder Tendrilsnotedcpgains command points for a killcommand points aren't in the dice
LictorPheromone TrailnotedarrivalStratagem cost onlyRapid Ingress for 0 CP: the tier test's ingress kind
Macro Organism [Crucible]Unstoppable Monstrosityunreadnot read yet
Macro Organism [Crucible]Burrowing Clawsunreadnot read yet
Macro Organism [Crucible]Floating Horrorunreadnot read yet
Macro Organism [Crucible]Armoured Shellunreadnot read yet
Macro Organism [Crucible]Leader-beastunreadnot read yet
Macro Organism [Crucible]Vanguard-beastunreadnot read yet
Macro Organism [Crucible]Winged Biomorphunreadnot read yet
Macro Organism [Crucible]Synaptic Senses (Psychic)unreadnot read yet
Macro Organism [Crucible]Fear of the Unseen (Aura)unreadnot read yet
Macro Organism [Crucible]Feeder Tendrilsunreadnot read yet
Macro Organism [Crucible]Hyperstimulationunreadnot read yet
Macro Organism [Crucible]Psychic Terror (Psychic)unreadnot read yet
MaleceptorEncephalic Diffusion (Aura, Psychic)partlyenemy-1 to be hit (attacker within 6"); -1 to be wounded (attacker below half) (starts off)the same minus on attacks at other units near it isn't in the calculator
MaleceptorDamaged: 1-5 Wounds Remainingmodelled-1 to hit while badly wounded (starts off)
MawlocTerror from the Deepnotedmortalmortal wounds and Battle-shock to every enemy within 12" when it arrivesmortal wounds outside attacks: mortalfx.json feeds the tier test only
MawlocDamaged: 1-5 Wounds Remainingmodelled-1 to hit while badly wounded (starts off)
Mucolid SporesBio-minefieldnotedenemyenemies can't advance from or to within 6"an enemy unit's movement isn't in the maths
Mucolid SporesFloating Deathnotedmortalexplodes next to enemies: mortal wounds (D6 on a 6)a one-use mine's mortal wounds aren't attacks
Mucolid Spores (Sporocyst)Bio-minefieldnotedenemyenemies can't advance from or to within 6"an enemy unit's movement isn't in the maths
Mucolid Spores (Sporocyst)Floating Deathnotedmortalexplodes next to enemies: mortal wounds (D6 on a 6)a one-use mine's mortal wounds aren't attacks
NeurogauntsNeurocytesnotedsynapsecounts as Synapse while in another unit's Synapse Range
NeurolictorFeeder Tendrilsnotedcp1 CP for each enemy character it killscommand points aren't in the dice
NeurolictorNeural Disruptionnotedshockan enemy within 12" tests Battle-shock each Command phasethe enemy's Battle-shock isn't a dice result yet
NeurolictorPsychological Saboteur (Aura)partlyenemy+1 to wound; -1 to be hit by a Battle-shocked unit (starts off)its -1 to hit for Battle-shocked enemies near it isn't in the calculator
NeurotyrantNode Lash (Psychic)modelledleadleading: +1 to hit, +1 to wound vs Battle-shocked (leaderfx.json)
NeurotyrantPsychic Terror (Psychic)notedshockharsher Battle-shock teststhe army's Shadow in the Warp test isn't dice
NeurotyrantNeuroloidsnotedsynapseextends Synapse range
Node Organism [Crucible]Alpha Warriorunreadnot read yet
Node Organism [Crucible]Burrowing Clawsunreadnot read yet
Node Organism [Crucible]Floating Horrorunreadnot read yet
Node Organism [Crucible]Armoured Shellunreadnot read yet
Node Organism [Crucible]Leader-beastunreadnot read yet
Node Organism [Crucible]Vanguard-beastunreadnot read yet
Node Organism [Crucible]Winged Biomorphunreadnot read yet
Node Organism [Crucible]Synaptic Senses (Psychic)unreadnot read yet
Node Organism [Crucible]Fear of the Unseen (Aura)unreadnot read yet
Node Organism [Crucible]Feeder Tendrilsunreadnot read yet
Node Organism [Crucible]Hyperstimulationunreadnot read yet
Node Organism [Crucible]Psychic Terror (Psychic)unreadnot read yet
Norn AssimilatorSingular PurposepartlychosenChosen enemy: Re-roll hits and wounds (its prey); Chosen objective: Feel No Pain 5+ (its objective). the objective pick also sets its OC to 15
Norn AssimilatorHarpoon BarbsnotedmortalD6 mortal wounds on 2+ to a unit falling back from itmortal wounds outside attacks
Norn AssimilatorProtean Purposenotedchosenonce a battle, picks Singular Purpose again (Talons of the Norn Queen)
Norn AssimilatorDamaged: 1-5 Wounds Remainingmodelled-1 to hit while badly wounded (starts off)
Norn Assimilator[Harpooned] (Toxinjecter Harpoon)notedmove+2 to charge a monster or vehicle it harpooneda weapon ability the engine doesn't read: it changes the charge, not the dice
Norn EmissarySingular PurposepartlychosenChosen enemy: Re-roll hits and wounds (its prey); Chosen objective: Feel No Pain 5+ (its objective). the objective pick also sets its OC to 15
Norn EmissaryUnnatural ResistancemodelledFeel No Pain 4+ vs mortal wounds
Norn EmissaryProtean Purposenotedchosenonce a battle, picks Singular Purpose again (Talons of the Norn Queen)
Norn EmissaryDamaged: 1-5 Wounds Remainingmodelled-1 to hit while badly wounded (starts off)
Old One EyeUnstoppable Monsternotedhealheals D3 wounds in each Command phasehealing between turns isn't in the maths (turns alive in the tier test)
Old One EyeAlpha Leadermodelledleadleading: re-roll hits for its unit (leaderfx.json)
Parasite of MortrexParasitic Infectionnotedspawninfantry it kills with its ovipositor can add Ripper Swarmsunits added during the game aren't in the dice
Parasite of MortrexIt Itches!notedshockan engaged enemy tests Battle-shockthe enemy's Battle-shock isn't a dice result yet
Prime Organism [Crucible]Monstrous Barrageunreadnot read yet
Prime Organism [Crucible]Burrowing Clawsunreadnot read yet
Prime Organism [Crucible]Floating Horrorunreadnot read yet
Prime Organism [Crucible]Armoured Shellunreadnot read yet
Prime Organism [Crucible]Leader-beastunreadnot read yet
Prime Organism [Crucible]Vanguard-beastunreadnot read yet
Prime Organism [Crucible]Winged Biomorphunreadnot read yet
Prime Organism [Crucible]Synaptic Senses (Psychic)unreadnot read yet
Prime Organism [Crucible]Fear of the Unseen (Aura)unreadnot read yet
Prime Organism [Crucible]Feeder Tendrilsunreadnot read yet
Prime Organism [Crucible]Hyperstimulationunreadnot read yet
Prime Organism [Crucible]Psychic Terror (Psychic)unreadnot read yet
PsychophageFeeding Frenzymodelled+1 to hit vs a hurt unit (melee); +1 to wound vs a half-dead unit (starts off)
PsychophageBio-stimulusnotedmarkfriends' melee attacks get +1 AP into the unit it shota mark on an enemy for other units isn't in the maths
PyrovoresBurning Spraynotedmarkthe unit it shot loses cover this phasea mark on an enemy for other units isn't in the maths
RavenersDeath From Belownotedarrivalreturns to reservesre-arrival is the tier test's (rearrive)
Ripper SwarmsChitinous Horrors (Aura)notedenemyhalves the OC of enemies engaged with itobjective control isn't dice
Ripper Swarms (Parasite of Mortrex)Chitinous Horrors (Aura)notedenemyhalves the OC of enemies engaged with itobjective control isn't dice
Screamer-killerDeath Screamnotedshocka unit it shot tests Battle-shock at -1the enemy's Battle-shock isn't a dice result yet
Spore MinesBio-minefieldnotedenemyenemies can't advance from or to within 6"an enemy unit's movement isn't in the maths
Spore MinesFloating Deathnotedmortalexplodes next to enemies: mortal wounds (D3 on a 6)a one-use mine's mortal wounds aren't attacks
Spore Mines (Biovore)Bio-minefieldnotedenemyenemies can't advance from or to within 6"an enemy unit's movement isn't in the maths
Spore Mines (Biovore)Floating Deathnotedmortalexplodes next to enemies: mortal wounds (D3 on a 6)a one-use mine's mortal wounds aren't attacks
Spore Mines (Harpy)Bio-minefieldnotedenemyenemies can't advance from or to within 6"an enemy unit's movement isn't in the maths
Spore Mines (Harpy)Floating Deathnotedmortalexplodes next to enemies: mortal wounds (D3 on a 6)a one-use mine's mortal wounds aren't attacks
SporocystSeed Mucolidsnotedspawnplaces a Mucolid Spore within 18" instead of shootingunits added during the game aren't in the dice
SporocystHive DefencesnotedoverwatchOverwatch for 0 CP, once a turnOverwatch isn't in the maths
TermagantsSkulking Horrorsnotedmovemoves D6" when an enemy ends a move within 8"
TervigonSpawn Termagantsnotedhealreturns D3+3 Termagants to a nearby unit each Command phasemodels returned between turns aren't in the maths
TervigonBrood Progenitor (Aura, Psychic)notedauraTermagants within 6" have Lethal Hits when shootingits aura on other units isn't in the calculator
TervigonDamaged: 1-5 Wounds Remainingmodelled-1 to hit while badly wounded (starts off)
The Red TerrorSwallow WholepartlyhealMaw: every wound critical (T4 or less). heals D3+2 per model the maw killsexact only up to Toughness 4: 'critical on any wound' needs its own mod; the healing isn't counted
The Red TerrorSubterranean Hunternotedarrivalback into reserves after a Fight phase when not engagedre-arrival is the tier test's (rearrive), not the calculator's
The SwarmlordHive Commandernotedcpgains command pointscommand points aren't in the dice
The SwarmlordMalign Presence (Aura)notedcpraises enemy stratagem costscommand points aren't in the dice
The SwarmlordDomination of the Hive Mind (Aura)notedsynapseextends synapse range
The SwarmlordLord of Deceit (Aura)notedcpsuperseded: the datasheet's Malign Presence takes precedence
ToxicreneGrasping Tendrilsnotedmovean engaged enemy may be stopped from falling back on a 3+
ToxicreneHypertoxic Miasma (Aura)notedmortalmortal wounds to each enemy within 6" after its movemortal wounds outside attacks
ToxicreneDamaged: 1-5 Wounds Remainingmodelled-1 to hit while badly wounded (starts off)
TrygonSubterranean Tunnelsnotedarrivaldeep strikes more than 6" away, then can't charge
TrygonDamaged: 1-5 Wounds Remainingmodelled-1 to hit while badly wounded (starts off)
Tyranid Prime with Lash WhipAggressive Leader‑beastnotedmoveits unit surges D6" after losing a model to shooting
Tyranid Prime with Lash WhipAlpha Warriormodelledleadleading: Sustained Hits 1 for its unit (leaderfx.json)
Tyranid Warriors with Melee Bio-WeaponsAdaptive Instincts (Once per turn, per unit)partly+1 Strength in melee (Adaptive Instincts)the +1 Toughness option needs a Toughness mod on defence
Tyranid Warriors with Ranged Bio-WeaponsAdaptable Predatorsnotedmoveshoots and charges after falling back
TyrannocyteAerial Seedingnotedarrivalarrives turn 1 to 3 outside the reserve limits, and drops its passengers
TyrannofexResilient Organismnotedonceonce a battle, one attack's Damage becomes 0one attack's damage cancelled once a battle needs a single-attack mod
TyrannofexDamaged: 1-5 Wounds Remainingmodelled-1 to hit while badly wounded (starts off)
Tyrant GuardGuardian Organismnotedleadits leading character has Feel No Pain 5+Feel No Pain on the leader's model only needs a selfFnp mod
VenomthropesFoul Spores (Aura)partlyauraBenefit of cover (its own spores)the same for other units near it isn't in the calculator
Von Ryan's LeapersPouncing LeapnotedcpStratagem use and cost onlyHeroic Intervention's cost and use only
Winged Hive TyrantParoxysm (Psychic)notedenemyan enemy within 12" loses 1 attack per weapon this Fight phasean enemy's lost attacks need an attacks-minus on defence
Winged Hive TyrantWill of the Hive Mindnotedcpa Stratagem 1 CP cheaper once a round, within 12"command points aren't in the dice
Winged Tyranid PrimeDeath Blownotedoncemay fight once more when slain in melee (4+)fighting after being slain isn't in the maths
Winged Tyranid PrimeAlpha Warriormodelledleadleading: Sustained Hits 1 for its unit (leaderfx.json)
ZoanthropesWarp Field (Aura, Psychic)notedaurafriends within 6" have a 6+ invulnerable saveits own 4+ invulnerable is better; the aura on others isn't in the calculator
ZoanthropesSpirit Leech (Aura, Psychic)notedmortalwith a Neurothrope, enemies failing Battle-shock nearby take D3 mortal woundsthe enemy's Battle-shock isn't a dice result yet
Barbed Hierodule [Legends]Overgrown Barbspartlyenemy-1 to be hit (suppressed attacker) (starts off)the suppressed unit's minus against other targets isn't in the calculator
Barbed Hierodule [Legends]Damaged: 1-6 Wounds Remainingmodelled-1 to hit while badly wounded (starts off)
Dimachaeron [Legends]Digestion Spinenotedhealheals D3 after a fight that killshealing isn't in the maths
Dimachaeron [Legends]Damaged: 1-5 Wounds Remainingmodelled-1 to hit while badly wounded (starts off)
Malanthrope [Legends]Enhanced Toxic Miasmanotedauraleading: its unit's Foul Spores reach 9"
Malanthrope [Legends]Prey Adaptationmodelledleadleading: a pick of melee abilities (leaderfx.json)
Scythed Hierodule [Legends]Irresistible Forcenotedmovecharges after falling back
Scythed Hierodule [Legends]Damaged: 1-6 Wounds Remainingmodelled-1 to hit while badly wounded (starts off)
Sky-slasher Swarms [Legends]Chitinous Horrorsnotedenemyhalves the OC of enemies engaged with itobjective control isn't dice

Leaders: what they give the unit they lead (leaderfx.json)

CharacterEffects
Old One EyeAlpha Leader: Re-roll hit rolls
BroodlordVicious Insight: Devastating Wounds; Hypnotic Gaze (Psychic): -1 to be hit in melee (Hypnotic Gaze)
Tyranid Prime with Lash WhipAlpha Warrior: Sustained Hits 1
Winged Tyranid PrimeAlpha Warrior: Sustained Hits 1
Malanthrope [Legends]Prey Adaptation: Sustained Hits 1: Sustained Hits 1 (melee); Lance: +1 to wound after charging (melee); Lethal Hits: Lethal Hits (melee)
NeurotyrantNode Lash: +1 to hit; +1 to wound
Hive TyrantWill of the Hive Mind: Stratagem cost only; Onslaught: Lethal Hits (shooting)
The SwarmlordHive Commander: Command points only; Malign Presence: Stratagem cost only; Domination of the Hive Mind: Synapse range only
Hyperadapted RavenersAlpha Invader: Sustained Hits 1

Core abilities on the datasheets that touch the dice

Core abilityUnitsThe engine reads itWhich
Stealth12no: the cover chip is set by hand (a gap: read it from the datasheet)Deathleaper, Gargoyles, Genestealers, Lictor, Neurolictor, Parasite of Mortrex, Raveners, Tyranid Warriors with Melee Bio-Weapons, Tyranid Warriors with Ranged Bio-Weapons, Venomthropes, Von Ryan's Leapers, Malanthrope [Legends]
Feel No Pain2yes, from the datasheetOld One Eye, Psychophage
Fights First3yes, from the datasheetDeathleaper, Lictor, Von Ryan's Leapers
Lone Operative4targeting only, not the diceDeathleaper, Lictor, Neurolictor, Parasite of Mortrex
Deadly Demise27no: mortal wounds when it diesBiovores, Carnifexes, Exocrine, Harpy, Harridan, Haruspex, Hierophant, Hive Crone, Hive Tyrant, Macro Organism [Crucible], Maleceptor, Norn Assimilator, Norn Emissary, Prime Organism [Crucible], Psychophage, Pyrovores, Screamer-killer, Sporocyst, Tervigon, The Swarmlord, Toxicrene, Tyrannocyte, Tyrannofex, Winged Hive Tyrant, Barbed Hierodule [Legends], Dimachaeron [Legends], Scythed Hierodule [Legends]
Deep Strike21the tier test's arrival modesDeathleaper, Gargoyles, Hyperadapted Raveners, Lictor, Mawloc, Mucolid Spores, Mucolid Spores (Sporocyst), Neurolictor, Parasite of Mortrex, Raveners, Ripper Swarms, Ripper Swarms (Parasite of Mortrex), Spore Mines, Spore Mines (Biovore), Spore Mines (Harpy), The Red Terror, Trygon, Tyrannocyte, Winged Hive Tyrant, Winged Tyranid Prime, Sky-slasher Swarms [Legends]
Infiltrators4the tier test's arrival modesDeathleaper, Lictor, Neurolictor, Von Ryan's Leapers
Scouts2the tier test's arrival modesBroodlord, Genestealers

Detachments

DetachmentDPRuleStatusKindWhat it does (our words)Can't yet
Invasion Fleet3Hyper AdaptionspartlySwarming Instincts: Sustained Hits 1 vs INFANTRY/SWARM; Hyper-Aggression: Lethal Hits vs MONSTER/VEHICLE; Hive Predators: nothing for the diceHive Predators (Precision on critical hits against characters) needs a Precision mod
Assimilation Swarm2Feed the Swarmnotedhealhealing and returning models onlyhealing and returned models between turns aren't in the maths
Crusher Stampede2Enraged Behemothspartlyoc+1 to hit when damaged; +1 to wound when badly hurtthe +2 Objective Control at Starting Strength isn't dice
Synaptic Nexus2Synaptic ImperitivespartlySynaptic Augmentation: 5+ invuln in Synapse; Surging Vitality: nothing for the dice; Goaded to Slaughter: +1 to hit in melee in SynapseSurging Vitality (+1 to Advance and Charge) is movement; each imperative once a battle
Unending Swarm2Insurmountable Oddsnotedmovemovement onlya surge move after being shot isn't in the maths
Vanguard Onslaught2Vanguard Primenotedlistwarlord choice only
Vanguard Onslaught2Questing Tendrilsnotedmovecharge eligibility only
Warrior Bioform Onslaught1Leader-beastsmodelled5+ invuln for Warriors and Primes
Subterranean Assault3Keywordsnotedlistobjective control only
Subterranean Assault3Surprise AssaultpartlyarrivalRe-roll hit rolls of 1tunnel markers (arrive within 9" of one) are the tier test's arrival kind
Tyranid AttackBoarding ActionsForming Boarding SquadsnotedlistBoarding Patrol list building only
Tyranid AttackBoarding ActionsMustering A Boarding PatrolnotedlistBoarding Patrol list building only
Tyranid AttackBoarding ActionsRules AdaptionsnotedlistBoarding Patrol ability swaps, no dice
Tyranid AttackBoarding ActionsXeno-Terrornotedshockbattle-shock and Overwatch onlythe enemy's Battle-shock isn't a dice result yet
Boarding SwarmBoarding ActionsForming Boarding SquadsnotedlistBoarding Patrol list building only
Boarding SwarmBoarding ActionsMustering A Boarding PatrolnotedlistBoarding Patrol list building only
Boarding SwarmBoarding ActionsRules AdaptionsnotedlistBoarding Patrol ability swaps, no dice
Boarding SwarmBoarding ActionsPriority Predationnotedmovemovement only
BiotideBoarding ActionsForming Boarding SquadsnotedlistBoarding Patrol list building only
BiotideBoarding ActionsMustering A Boarding PatrolnotedlistBoarding Patrol list building only
BiotideBoarding ActionsRules AdaptionsnotedlistBoarding Patrol ability swaps, no dice
BiotideBoarding ActionsUnstoppable Swarmnotedmovemovement and hatchways only
Ambush Predators1MindhungerpartlyarrivalRe-roll hit 1s vs CHARACTERDeep Strike for Deathleaper, Lictors and Neurolictors is an arrival, not dice
Talons of the Norn Queen1Higher Imperativesnotedchosengrants a datasheet ability, not modelledlets a Norn re-pick Singular Purpose once (unitfx.json's choice)
Infestation SwarmBoarding ActionsRules AdaptionsnotedlistBoarding Patrol ability swaps, no dice
Infestation SwarmBoarding ActionsAuspex Ghostsnotedlistdeployment only
Infestation SwarmBoarding ActionsMustering A Boarding PatrolnotedlistBoarding Patrol list building only
Infestation SwarmBoarding ActionsHalf-glimpsed Shadowsmodelled-1 to hit vs distant shooting

Enhancements (upgrades for one character; never in the calculator or the letters yet)

DetachmentEnhancementPtsWhoStatusKindWhat it does (our words)Can't yet
Invasion FleetAlien Cunning30TYRANIDS modelnotedarrivalredeploys up to three units after deployment, into reserves if wanted
Invasion FleetPerfectly Adapted15TYRANIDS modelnotedonceonce a turn, one re-roll of a hit, wound, damage, save, advance or chargea single-die re-roll needs its own mod
Invasion FleetSynaptic Linchpin20TYRANIDS modelnotedsynapseSynapse Range 9" around the bearer
Invasion FleetAdaptive Biology25TYRANIDS modelpartlyFeel No Pain 5+ (Adaptive Biology); Feel No Pain 4+ once wounded (starts off)the bearer's own model only: exact when it's alone (a selfFnp mod would make it exact when leading)
Assimilation SwarmRegenerating Monstrosity20TYRANIDS model (not MONSTER)notedhealits unit can be regenerated twice a phasehealing isn't in the maths
Assimilation SwarmInstinctive Defence15TYRANIDS modelnotedcpFights First near a Harvester; Heroic Intervention 1 CP cheaperFights First is set by hand in the calculator
Assimilation SwarmBiophagic Flow (Aura)10TYRANIDS modelnotedhealHarvesters near it regenerate at 9"
Assimilation SwarmParasitic Biomorphology25TYRANIDS modelmodelled+1 Strength in melee; +1 attack in melee after a kill (starts off)
Crusher StampedeOminous Presence15TYRANIDS MONSTERnotedoc+3 Objective Control
Crusher StampedeEnraged Reserves20TYRANIDS MONSTERnotedoncemay fight once more when slain in melee (3+)fighting after being slain isn't in the maths
Crusher StampedeNull Nodules10TYRANIDS MONSTERmodelledFeel No Pain 5+ vs psychic (once) (starts off)
Crusher StampedeMonstrous Nemesis25TYRANIDS MONSTERmodelled+1 to wound vs MONSTER/VEHICLE (melee)
Synaptic NexusPower of the Hive Mind10TYRANIDS PSYKERpartly+1 S and AP (its psychic weapons)needs a psychic-weapons-only condition
Synaptic NexusPsychostatic Disruption30TYRANIDS SYNAPSEnotedarrivalenemy reserves can't arrive within 12"; once, may stop one arriving
Synaptic NexusSynaptic Control20TYRANIDS SYNAPSEmodelled-1 Damage (the bearer)
Synaptic NexusThe Dirgeheart of Kharis (Aura)15TYRANIDS SYNAPSEnotedshockenemies within 9" lose 1 Leadershipthe enemy's Leadership isn't dice
Unending SwarmRelentless Hunger20TYRANIDS modelnotedmove+2" Move for the bearer's unit
Unending SwarmNaturalised Camouflage30TYRANIDS modelnotedaurathree Endless Multitude units near it have cover in round 1cover for other units, round 1 only: an aura the calculator doesn't place
Unending SwarmPiercing Talons25TYRANIDS modelnotedenemy+1 AP on critical wounds for the bearer's unitAP on critical wounds only needs its own mod
Unending SwarmAdrenalised Onslaught15TYRANIDS modelnotedmove+3" to pile in and consolidate
Vanguard OnslaughtHunting Grounds30TYRANIDS modelnotedshockenemy units arriving from reserves test Battle-shock on a 2+the enemy's Battle-shock isn't a dice result yet
Vanguard OnslaughtChameleonic15VANGUARD INVADERmodelledBenefit of cover (Stealth)
Vanguard OnslaughtStalker10VANGUARD INVADERmodelled+1 to hit and wound (its marked prey)
Vanguard OnslaughtNeuronode20TYRANIDS modelnotedarrivalredeploys up to three Vanguard Invader units, into reserves if wanted
Warrior Bioform OnslaughtElevated Might30WINGED TYRANID PRIME or TYRANID PRIME WITH LASH WHIPpartlyRe-roll wounds, +1 AP (the Prime's melee)the bearer's attacks only, not its unit's: needs a bearer-only condition
Warrior Bioform OnslaughtOcular Adaptation20WINGED TYRANID PRIME or TYRANID PRIME WITH LASH WHIPmodelled+1 to hit in melee (Ocular Adaptation)
Subterranean AssaultSynaptic Strategy15TYRANIDS modelnotedcponce a battle, Rapid Ingress for 0 CP
Subterranean AssaultTremor Senses20TYRANIDS modelnotedarrivalredeploys up to three units, into reserves if wanted
Subterranean AssaultVanguard Intellect15TYRANIDS model with Deep Strikenotedarrivaldeep strikes from the first turn
Subterranean AssaultTrygon Prime20TRYGONpartlysynapse+1 S and WS (Trygon Prime). also gains Synapse
Tyranid AttackSynaptic Goad–TYRANIDS modelnotedmove+2" Move for a nearby Tyranid Warriors unit each turn
Tyranid AttackReinforced Carapace–TYRANIDS modelmodelled-1 Damage (the bearer)
Boarding SwarmMonoform Predators–-notedlistno enhancements in this detachment
BiotideSynaptic Beacon–TYRANIDS modelnotedsynapseSynapse Range 9" around the bearer
BiotideHypersurge Gland–TYRANIDS modelnotedmoveonce a battle, charges at the end of the enemy's Charge phase
Ambush PredatorsEncircling Horrors20NEUROLICTOR, LICTOR or VON RYAN'S LEAPERS unitnotedmovemoves D3+3" when an enemy ends a move within 8"
Ambush PredatorsCryptophotaic Camouflage15VON RYAN'S LEAPERS unitnotedmove-3" detection range
Talons of the Norn QueenDestabilising Predation20NORN EMISSARY unitmodelledAnti-Character 2+ (shooting)
Talons of the Norn QueenSynaptoprescience30NORN ASSIMILATOR unitmodelled4+ invulnerable save
Infestation SwarmStalking Menace–TYRANIDS modelnotedarrivalonce a battle, back into reserves after the enemy's Fight phase
Infestation SwarmPsi-spoor Sensitivity–TYRANIDS modelnotedmovecharges units it can't see

Stratagems (names only; their dice are a later card)

DetachmentStratagems
Invasion FleetRapid Regeneration, Adrenal Surge, Death Frenzy, Overrun, Predatory Imperative, Endless Swarm
Assimilation SwarmBroodguard Impulse, Reclaim Biomass, Tyrannoformed, Ablative Carapace, Secure Biomass, Rapacious Hunger
Crusher StampedeCorrosive Viscera, Rampaging Monstrosities, Savage Roar, Untrammelled Ferocity, Swarm-guided Salvoes, Massive Impact
Synaptic NexusThe Smothering Shadow, Synaptic Channelling, Irresistible Will, Reinforced Hive Node, Imperative Dominance, Override Instincts
Unending SwarmSynaptic Goading, Unending Waves, Teeming Masses, Swarming Masses, Bounding Advance, Preservation Imperative
Vanguard OnslaughtSurprise Assault, Assassin Beasts, Seeded Broods, Hypersensory Scillia, Unseen Lurkers, Invisible Hunter
Warrior Bioform OnslaughtAlien Physiology, Synaptic Micronodes, Parasitic Payload
Subterranean AssaultAdaptive Optimisation, Replenishing Swarms, Enfilading Emergence, Tunnel Network, Swarming Assault, Retreat Below
Tyranid AttackBio-acid Surge, Phagic Spores, Expendable Biomass, Hive Sight
Boarding SwarmLithe Killers, Adrenalised Slaughter, Talon-tip Swarm, Predatory Pounce
BiotideLiving Avalanche, Squirming Masses, Swarm Hunters, Onrushing Horde
Ambush PredatorsCounterpredation, Hypersensory Adaptations, Scanner Gheist
Talons of the Norn QueenCatalytic Biofortification, Lesser Prey, Tanglestrike Rounds
Infestation SwarmHyperadrenal Reflexes, Pervasive Dread, Hunting Grounds, Outflank, Unseen Lurkers

Army rules (armyfx.json)

RuleWhat it does (our words)
Synapse+1 Strength in melee near a Synapse creature. Battle-shock tests on three dice near a Synapse creature
Shadow in the WarpOnce a battle, every enemy unit tests for Battle-shock, a point harder near a Synapse creature: pressure on the opponent's objective control, not dice we roll yet.

The tier test with the coverage switched in

V5 (every round-5 switch on) against V5 with each Tyranid unit's own abilities from docs/data/unitfx.json switched in (--own-out): effects marked off left out, conditions the engine can't check at their round-5 shares (an objective 50%), Singular Purpose and the enemy-side rules left to tierfx.json. Panel ρ 0.38 → 0.38; the same letter as Auspex 16 → 17 of 44, within one 31 → 31; ρ with list share 0.24 → 0.23. Letters that move: 1.

UnitLetterCompositeJobWhat switched in
VenomthropesC → B76.0 → 81.5AnvilFoul Spores (Aura): Benefit of cover (its own spores)
Hyperadapted RavenersC → C67.7 → 71.4HammerAlpha Invader: Sustained Hits 1

What-if: the detachments' movement rules read by the tier test

Measured with the seven move keys renamed to tier. The tool, the constants and every other piece of data were the same; the full round-5 command was run and then put back. Variable 7 (detachment context) alone went 0.25 → 0.24 against Auspex, and cumulative V5 went 0.38 → 0.28 (list share 0.24 → 0.11). One key at a time, V5's ρ with Auspex and with list share:

Key aloneρ Auspexρ list share
none (V5 as published)0.380.24
Subterranean Assault: tunnels (reserves arrive V5C.TUNNEL = 7" away)0.310.18
Crusher Stampede: +2 OC at Starting Strength (monsters, share 0.9)0.320.21
Assimilation Swarm: Feed the Swarm (3 wounds a round from each Harvester)0.360.19
Vanguard Onslaught: charge after an advance0.380.24
Ambush Predators: Deep Strike for Deathleaper, Lictors and Neurolictors0.380.24
Talons of the Norn Queen: the re-pick0.380.24
Unending Swarm: surge 3.5"0.380.24

With all seven, 15 letters move (V5 → with them, Auspex in brackets):

Our reading. Tunnels make every reserve arrival 7" away, for every unit in that detachment, all game. That lifts the Hammer of anything that walks in, so seven units reach S, more than Auspex gives. Feed the Swarm credits each Harvester's whole regeneration to the Harvester's Banner. That makes Pyrovores and Ripper Swarms the best Banners in the army; the healing belongs to the units healed, and only a share of it is used. Crusher Stampede's Objective Control lifts monsters' Anvil at a 0.9 share. A tunnel needs a Burrower to have arrived first, so its share should be lower and should start later. These are questions about constants (V5C.TUNNEL, the regeneration credit, the OC share), so they belong to the tier test's next round. The data is written and waiting under move.