Staff of Ulthamar

Whenever Eldrad Ulthran successfully passes a Psychic test, roll a D6. On a score of 5 or 6 he immediately generates a Warp Charge point.

If a model has this special rule, or is attacking with a Melee weapon that has this special rule, they always Wound on a 2+ in close combat.

Similarly, if a model makes a shooting attack with a weapon that has this special rule, they always Wound on a 2+. 

In either case, this special rule has no effect against vehicles or buildings.

Any Psyker that has one or more weapons with this special rule knows the Force psychic power in addition to any other powers they know.

Force - Warp Charge 1
Force is a blessing psychic power that targets the Psyker and his unit. All of the targets' weapons that have the Force special rule gain the Instant Death special rule until the start of your next Psychic phase.