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Power / Toughness:
Clockwork Steed cannot be blocked by artifact creatures. When Clockwork Steed comes into play, put four +1/+0 counters on it. At the end of any combat in which Clockwork Steed attacked or blocked, remove one of these counters. <X,T>: Put X +1/+0 counters on Clockwork Steed. You may have no more than four of these counters on Clockwork Steed. Use this ability only during your upkeep.