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, you can treat the model as if it were a friendly model in your army in your Shooting,
Charge and Fight phases. At the end of the Fight phase, the character reverts to being an enemy
model.