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.