Clockwork Swarm enters with four +1/+0 counters on it.
Clockwork Swarm can’t be blocked by Walls.
At end of combat, if Clockwork Swarm attacked or blocked this combat, remove a +1/+0 counter from it. , : Put up to X +1/+0 counters on Clockwork Swarm. This ability can’t cause the total number of +1/+0 counters on Clockwork Swarm to be greater than four. Activate only during your upkeep.
Loses a counter even if it is affected by a Fog-like effect which prevents it from dealing damage.
04-10-2004
wotc
Can attack or block even if it has no counters.
04-10-2004
wotc
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.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.
, 
: Put up to X +1/+0 counters on Clockwork Swarm. This ability can’t cause the total number of +1/+0 counters on Clockwork Swarm to be greater than four. Activate only during your upkeep.
Amy Weber2011-01-10
