Cavern of Souls 269 (The Lost Caverns of Ixalan)

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 - $90.60
LP - $72.50
MP - $54.40
HP - $36.30
DMG - $18.20