Graft 4 (This creature enters the battlefield with four +1/+1 counters on it. Whenever another creature enters the battlefield, you may move a +1/+1 counter from this creature onto it.)

Evolve (Whenever a creature enters the battlefield under your control, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)

{4}{G}{U}: Create an X/X green and blue Ooze creature token, where X is the greatest power amongst creatures you control. It gains haste. Sacrifice it at the beggining of the next end step.