As Ixidron enters the battlefield, turn all other nontoken creatures face down. (They're 2/2 creatures.) Ixidron's power and toughness are each equal to the number of face-down creatures on the battlefield.
Near Mint - $0.50
Lightly Played - $0.40
Moderately Played - $0.30
Heavily Played - $0.30
Damaged - $0.30
Near Mint Spanish - $0.50
Lightly Played Spanish - $0.40
Moderately Played Spanish - $0.30
Heavily Played Spanish - $0.30
Damaged Spanish - $0.30