Beast Boy

{g}: Choose one - Until end of turn, Beast Boy becomes a 4/4 Rhino and gains trample; or until end of turn, Beast Boy becomes a 2/2 Bird and gains flying; or until end of turn, Beast Boy becomes a 1/6 turtle with hexproof. Activate this ability only once a turn.
If you control creatures named Robin, Starfire, Raven, Cyborg and Beast Boy exile them, then meld them into Teen Titans.