Possession

If manifested, then until the start of your next Psychic phase, the Armour Penetration characteristic of the psyker's melee weapon is improved by 2 (e.g. an AP of -1 becomes -3). Furthermore, until the start of your next Psychic phase, each time the psyker destroys an enemy INFANTRY CHARACTER in the Fight phase, you can add a Chaos Spawn model to your army. If the destroyed model was ADEPTUS ASTARTES or HERETIC ASTARTES, you can instead add a Greater Possessed model to your army. If a new model is added to your army, set it up within 6" of the psyker and more than 1" from any enemy models. In addition, each time the psyker destroys an enemy VEHICLE model in the Fight phase that could explode, it automatically explodes; no dice roll is made and any mortal wounds suffered by the psyker in the resulting explosion are ignored.