I dunno. Seems odd to me, as it FEELS like a Cleric Class. Turn undead, the "Exception" power which doesn't matter on anything but Clerics. But doesn't actually Require Cleric in any way to to take.

Oh, might want to give them an exception/free "Exalted Turning". That just seems to fit the concept. I turn AND torture Undead at the same time with a free 3d6 damage. Bonus points because the illustration of it shows the zombies on fire. AND the Cleric using a Morning Star.