Instead of firing a weapon in the Shooting phase the psyker can take a psychic test to use this power. Designate a single enemy unit within 18" and not in close combat. This unit must take a Morale check as if it has just suffered 25% casualties from shooting. If the Inquisitor's Leadership is greater than the target's highest Leadership, then the Leadership test is taken with a penalty equal to the different between the two values.
Building an army? Create, validate and share your list with New Recruit, army builder for Warhammer 40,000 3rd Edition and many more games.
Try the builder