As Foreboding Ruins enters the battlefield, you may reveal a Swamp or Mountain card from your hand. If you don't, Foreboding Ruins enters the battlefield tapped.
Near Mint - $0.30
Lightly Played - $0.30
Played - $0.30
Heavily Played - $0.20
Damaged - $0.20
Near Mint Non-English - $0.30
Lightly Played Non-English - $0.30
Played Non-English - $0.30
Heavily Played Non-English - $0.20
Damaged Non-English - $0.20