Chaotic Goo
{2}{R}{R}
Creature -- Ooze
0/0
~this~ enters with three +1/+1 counters on it.
At the beginning of your upkeep, you may flip a coin. If you win the flip, put a +1/+1 counter on ~this~. If you lose the flip, remove a +1/+1 counter from ~this~.