Vampiric Evasion

You move through the air as a vampiric cloud of mist in response to an attack.

The triggering attack still hits you, but you become immune to non-magical damage. After the attack hits you, you can move up to 30 ft. without provoking opportunity attacks, and can move through the space of hostile creatures and any space that air can travel through. At the end of the attacker's turn, you revert back to your normal form.