Raven, Cutthroat Magician

+4: Raven becomes a 3/4 "Half-Elf Illusion" with Double Strike until end of turn.
-3: Cast a spell from your hand, this ability can be used at Instant speed.
-14: Raven becomes a 7/8 "Human Blademage" with Double Strike. He can still activate Planeswalker abilities; Loyalty becomes +1/+1 counters.