Oozeling

Mitotic {2} ({2}: If this creature's base toughness is 2 or greater, exile it. Then create two creature tokens that are copies of the exiled creature except they have base power and toughness X/X, where X is half of the exiled creature's base toughness, rounded down.)
Sacrifice a creature: Put a +1/+1 counter on Oozeling.
"Ha, what a funny creature."
--Mira, wandering merchant, last words