Clockwork Avian

Artifact Creature - Bird 0/4, 5 (5)
Flying
Clockwork Avian comes into play with four +1/+0 counters on it.
At end of combat, if Clockwork Avian attacked or blocked this turn, 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 Beast to be greater than four. Play this ability only during your upkeep.¹
Illus. Randy Asplund

Crystal Keep Rulings Summaries

• See Clockwork Beast for rulings.
• Extended tournaments (see Rule 803) have banned this card since 1999/10/01.
• Note - This card had no creature type until Oracle 2007/10/01, when it became "Bird".

Format Legality	Legal in Vintage, Legacy Banned in Extended, Standard
Printings (3/13)	Beatdown (Special) Fourth Edition (Rare) Antiquities (Rare)