As an additional cost to cast Harrow, sacrifice a land.
Search your library for up to two basic land cards and put them onto the battlefield. Then shuffle your library.
Changing Rath's landscape is like tearing the scab from a wound.
NM-Mint - $0.70
NM-Mint Non English - $0.70
Lightly Played - $0.70
Lightly Played Non English - $0.70
Moderately Played - $0.60
Moderately Played Non English - $0.60
Heavily Played - $0.60
Heavily Played Non English - $0.60
Damaged - $0.50
Damaged Non English - $0.50