Yoda, Retired Jedi

+2: Put a +1/+1 counter on each creature you control.
0: Yoda, Retired Jedi becomes a 5/5 green white jedi elf with indestructible and haste until end of turn.
-10: Tap all creatures your opponents control. All creatures you control gain haste and get 2 +1/+1 counters.