Psychophage

Some models have 'Deadly Demise x' listed in their abilities. When such a model is destroyed, roll one D6 before removing it from play (if such a model is a TRANSPORT, roll before any embarked models disembark). On a 6, 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").

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.

Some models have 'Feel No Pain x+' listed in their abilities. Each time a model with this ability suffers damage and so would lose a wound (including wounds lost due to mortal wounds), roll one D6: if the result is greater than or equal to the number denoted by 'x: that wound is ignored and is not lost. If a model has more than one Feel No Pain ability, you can only use one of those abilities each time that model suffers damage and so would lose a wound.