Ministorum Priest - Warhammer 40K: Rogue Trader Database

The Ministorum priest and their allies in the area of effect of War Hymn gain +(priest’s WP bonus / 2) damage for single shots and attacks of opportunity for 1 round.

All enemies in the area of effect of War Hymn gain +1 stack of the disturbed effect. Enemies that are adjacent to the priest gain +2 stacks of disturbed instead. Also, all daemons in the area of effect suffer damage equal to the momentum restored to the priest while using this ability.

The Ministorum priest gains a WP bonus% chance to ignore any enemy attack.

Melee, flame, and melta attacks against daemons and psykers deal an additional +(2 x WP bonus) damage and gain +(6 x WP bonus)% armour penetration.

Such attacks against xenos deal an additional +WP bonus damage and gain +(3 x WP bonus)% armour penetration.

The Ministorum priest gains +(4 x WP bonus)% to armour against attacks of daemons and warp damage.
The priest’s resolve is also permanently increased by (WP bonus / 2).