Treason of Tzeentch

Treason of Tzeentch has a warp charge value of 8.
If manifested, select an enemy CHARACTER
that is within 18" of the psyker and visible to him
(excluding the opponent's Warlord) and roll 2D6.
If the result is greater than the character's
Leadership characteristic, until the end of the
following Fight phase treat that character as if
it were a friendly model from your army
in your Shooting, Charge and Fight phases.