Cavern of Souls 226 (Avacyn Restored)

As this land enters, choose a creature type. {T}: Add {C}. {T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can't be countered.

NM - $93.20
LP - $74.50
MP - $55.90
HP - $37.30
DMG - $18.70