Aspect of The Beast

You answer the Call of The Beast within, expending a drop of your own blood to transform into an Infernal Shifter. When you transform, roll one hit dice plus your spellcasting modifier per level of spell to determine your new health pool for the duration of the transformation. 

In addition, while you're transformed you gain a bonus to your AC equal to your spellcasting modifier. You gain a bite and claw attack detailed on your Hybrid Shape character sheet. Your spellcasting modifier is also used to determine bonuses to the hit and damage dice. The attacks count as magic for the purposes of calculating resistance. You have a base walking speed of 40 and are immune to fire damage.

The spell ends if your form drops to zero hit points and any additional damage is transferred to you.