Clockwork Swarm
Masters Edition IV — common
Artifact Creature — Insect
Clockwork Swarm rulings:
2004-10-04: Loses a counter even if it is affected by a Fog-like effect which prevents it from dealing damage.
2004-10-04: Can attack or block even if it has no counters.
2004-10-04: If the ability to add counters resolves when there are already the maximum number of counters on it, any counters over the maximum are simply not added.