Clockwork Swarm [ME4]

Clockwork Swarm

Artifact Creature — Insect

This creature enters with four +1/+0 counters on it.This creature can't be blocked by Walls.At end of combat, if this creature attacked or blocked this combat, remove a +1/+0 counter from it., : 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.

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