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.
Near Mint - $1.400
Lightly Played - $1.100
Moderately Played - $1.000
Heavily Played - $800
Damaged - $700
Near Mint Spanish - $1.400
Lightly Played Spanish - $1.100
Moderately Played Spanish - $1.000
Heavily Played Spanish - $800
Damaged Spanish - $700