If this creature hasn't been exerted this turn, you may exert it as it attacks. When you do, untap all other creatures you control and after this phase, there is an additional combat phase. (An exerted creature won't untap during your next untap step.)
Combat Celebrant has 5 listed printings; the most valuable is the Prerelease printing from PAKH at US$32.51 on TCGplayer's market price. Prices below are the cheapest in-stock listing in the United States.
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