Chaotic Goo 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 Chaotic Goo. If you lose the flip, remove a +1/+1 counter from Chaotic Goo.
NM-Mint - $1.30
Lightly Played - $1.20
Moderately Played - $1.10
Heavily Played - $1.00
Damaged - $0.80
NM-Mint Non English - $1.30
Lightly Played Non English - $1.20
Moderately Played Non English - $1.10
Heavily Played Non English - $1.00
Damaged Non English - $0.80