Astral Form Master

Rush 2 (When this creature enters the battlefield it gets +2/+2 and has flying and haste until the end of turn.)
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
{2}, Exile an instant or sorcery from your graveyard: Exile Astral Form Master, then return it to the battlefield under your control.

One step from the void.