If Combat Celebrant 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.)
“This is the hour when we draw swords together!”
—Aragorn
Near Mint - $400
Lightly Played - $300
Moderately Played - $300
Heavily Played - $300
Damaged - $200
Near Mint Spanish - $400
Lightly Played Spanish - $300
Moderately Played Spanish - $300
Heavily Played Spanish - $300
Damaged Spanish - $200