Flying Clockwork Avian enters the battlefield with four +1/+0 counters on it. At end of combat, if Clockwork Avian attacked or blocked this combat, remove a +1/+0 counter from it. {X}, {T}: Put up to X +1/+0 counters on Clockwork Avian. This ability can't cause the total number of +1/+0 counters on Clockwork Avian to be greater than four. Activate only during your upkeep.
Near Mint - $1,080,000
Lightly Played - $1,030,000
Moderately Played - $920,000
Heavily Played - $810,000
Damaged - $760,000
Near Mint Spanish - $1,080,000
Lightly Played Spanish - $1,030,000
Moderately Played Spanish - $920,000
Heavily Played Spanish - $810,000
Damaged Spanish - $760,000