Black creatures can't attack unless their controller sacrifices a land for each black creature they control that's attacking. (This cost is paid as attackers are declared.)
"We shall oppose Lim-Dûl and his forces by any means necessary, even if the very earth be torn asunder."
—Arna Kennerüd, Skyknight
Near Mint - $0.60
Lightly Played - $0.50
Moderately Played - $0.40
Heavily Played - $0.40
Damaged - $0.30
Near Mint Spanish - $0.60
Lightly Played Spanish - $0.50
Moderately Played Spanish - $0.40
Heavily Played Spanish - $0.40
Damaged Spanish - $0.30