Maniacal Seizure

Maniacal Seizure has a warp charge value of 7. If manifested, select one enemy unit within 18" of
this psyker. Until the start of your next Psychic
phase, when resolving an attack made by that
unit, subtract 1 from the hit roll, and when
resolving an attack made by a friendly
DEATHSKULLS model against that unit,
improve the Armour Penetration
characteristic of the weapon by 1 for that
attack (e.g. AP -2 becomes AP -3)