Psychic Scream

Witchfire:
If manifested, select the closest enemy unit
within 18" of this PSYKER. That unit suffers
D3 mortal wounds. If that unit has the
PSYKER keyword and the result of the
Psychic test is higher than the Leadership
characteristic of that unit, randomly select
one psychic power that unit knows. Until
the end of the battle, that unit no longer
knows that psychic power.