Tarnation Vista 60 (Outlaws of Thunder Junction: The Big Score)

This land enters tapped. As it enters, choose a color. {T}: Add one mana of the chosen color. {1}, {T}: For each color among monocolored permanents you control, add one mana of that color.

NM - $7.70
LP - $6.10
MP - $4.60
HP - $3.10
DMG - $2.20