Amphrotizor

Fission (When this creature attacks, you may sacrifice
it. When you do, create two blue-green 0/0 Amoeba
creatures with Fission that enter the battlefield tapped
and attacking with +1/+1 counters distributed
amongst them totaling the power of this card.)
Amphrotizor enters the battlefield with X +1/+1 counters.
{1}{u}{g}, Sacrifice a Blob: Return Amphrotizor
from the graveyard to your hand.