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 - $2.600
Lightly Played - $2.100
Moderately Played - $1.800
Heavily Played - $1.600
Damaged - $1.300
Near Mint Spanish - $2.600
Lightly Played Spanish - $2.100
Moderately Played Spanish - $1.800
Heavily Played Spanish - $1.600
Damaged Spanish - $1.300