Clockwork Avian

Clockwork Avian
	Printings/Rarity:
	Cost:
	CMC:	5
	Card Type:	Artifact Creature — Bird
	Power/Toughness:	0/4
	Oracle Text:	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. , : 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 this ability only during your upkeep.