Multiplying Ooze

Shroud, trample.
At the beginning of your end step, if Multiplying Ooze was not dealt damage this turn, sacrifice it, then create two copies of multiplying Ooze with a +1/+1 counter on each of them.
"It started as a puddle. We thought nothing of it. Then it ate Jerry."- Captain Reddick of the Solaris Guard