Anti Form Transformation

You allow the darkness in your heart to take hold temporarily, transforming you into a nightmarish form of yourself appearing like a Heartless. 

After casting this spell, for one minute total or until you are knocked out, your only ways of attacking are with feral blows from your new claws and feet. You deal 2d6 + your spellcasting modifier damage as Unarmed attacks. During the time this spell is active, you cannot cast other spells or use any other action except attacking.

At each spell scale increase, this deals an additional 2d6 damage.