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 attacked or blocked, remove one of these counters.
oX, ocT: Put X +1/+0 counters on Clockwork Beast. You may have no more than seven of of these counters on Clockwork Beast. Use this ability only during your upkeep.