Ubbo-Sathla, Unbegotten Source

Flying, Defender, Hexproof

During your Endstep you may pay {w}{u}{b}{r}{g}. If you do, Ubbo-Sathla may use it's ability until your next turn.
At the beginning of each turn, choose a permanent. Until end of turn, Ubbo-Sathla becomes a copy of that permanent except it's still a cosmic creature in addition to it's other types. You may activate it's abilities any time.