Psychophage

In your Shooting phase, after this model has shot, select one enemy unit hit by one or more of those attacks. Until the end of the turn, each time a friendly TYRANIDS unit makes a melee attack that targets that enemy unit, improve the Armour Penetration characteristic of that attack by 1. The same enemy unit can only be affected by this ability once per turn.

Each time this model makes a melee attack that targets a unit that is below its Starting Strength, add 1 to the Hit roll. If that target is also Below Half strength, add 1 to the Wound roll as well.

This ability always takes the form Deadly Demise X. Each time a model in this unit is destroyed, after the units embarked within it (if any) have made their emergency disembark moves, roll one D6. On a 6, that model suffers a deadly demise; each unit within 6" of that model suffers a number of mortal wounds denoted by X (if this is a random number, roll separately for each unit within 6").  Example:* An Impulsor with a unit of Intercessors embarked within it is destroyed by ranged attacks. First, any unresolved attacks made by the attacking unit are resolved. Then the Intercessors make an emergency disembark move. Then the roll is made for the Deadly Demise* ability, and on a 6, that ability is resolved. Finally, the Impulsor is removed from the battlefield.

If your Army Faction is TYRANIDS, while a TYRANIDS unit from your army is within 6" of one or more friendly SYNAPSE models, that TYRANIDS unit is said to be within Synapse Range of that model and of your army. While a TYRANIDS unit from your army is within Synapse Range of your army: ▪ Each time that unit takes a Battle‑shock test, take that test on 3D6 instead of 2D6. ▪ Each time a model in that unit makes a melee attack, add 1 to the Strength characteristic of that attack.

This ability always takes the form Feel No Pain X+. Each time a model with this ability would lose a wound, roll one D6: on an X+, that wound is not lost. 

This ability always takes the form [ANTI-X Y+]. Each time an attack is made with an [ANTI] weapon, if the target unit has the keyword denoted by X, an unmodified wound roll of Y+ is a critical wound. Example:* An attack made with an [ANTI-VEHICLE 4+] weapon against a Vehicle unit will result in a critical wound on an unmodified wound roll of 4+, while an attack made with an [ANTI-PSYKER 2+] weapon against a Psyker unit will result in a critical wound on an unmodified wound roll* of 2+.

Each time an attack made with a [DEVASTATING WOUNDS] weapon results in a critical wound, the attack sequence for that attack ends and the target unit suffers a number of mortal wounds equal to the D characteristic of that weapon. These are inflicted after resolving any normal damage inflicted by those attacks.  Mortal wounds inflicted by [DEVASTATING WOUNDS] weapons can damage a maximum of one model for each critical wound; any remaining mortal wounds inflicted by that attack are lost.  Example: An attack made with a [DEVASTATING WOUNDS] weapon with a D characteristic of 3 results in a critical wound against an Intercessor Squad, so inflicts 3 mortal wounds. The first 2 mortal wounds are sufficient to destroy 1 Intercessor model, so the remaining mortal wound* is lost.