name: Clockwork Avian
originalText: Flying\nPut four +1/+0 counters on Avian. After Avian attacks or blocks a creature, discard a counter.\nDuring his or her upkeep, controller may buy back lost counters for {1} per counter; this taps Avian.
printings: 4BB, 4ED, ATQ, BTD, ME4, REN, RIN
text: Flying\nThis creature enters with four +1/+0 counters on it.\nAt end of combat, if this creature attacked or blocked this combat, remove a +1/+0 counter from it.\n{X}, {T}: Put up to X +1/+0 counters on this creature. This ability can't cause the total number of +1/+0 counters on this creature to be greater than four. Activate only during your upkeep.
type: Artifact Creature — Bird