Card Text:
When Clockwork Beast comes into play, put seven +1/+0 counters on it. At the end of any combat in which Clockwork Beast is assigned to attack or block, remove a counter.
oX, ocT: Put X +1/+0 counters on Clockwork Beast. You may have no more than seven of these counters on Clockwork Beast. Use this ability only during your upkeep.