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.
NM-Mint - $0.30
NM-Mint Non English - $0.30
Lightly Played - $0.30
Lightly Played Non English - $0.30
Moderately Played - $0.30
Moderately Played Non English - $0.30
Heavily Played - $0.30
Heavily Played Non English - $0.30
Damaged - $0.20
Damaged Non English - $0.20