Mountain Lake Land Tap: Add one colorless mana to your mana pool. Tap: Choose Blue or Red. Add the chosen colored mana to your mana pool. Mountain Lake will only produce the chosen color or colorless as long as it remains in play. UW=Meadow Lake UB=Swamp Lake BR=Mountain Swamp RG=Mountain Treeland GW=Treeland Meadows WB=Swampy Meadows UR=Mountain Lake BG=Treeland Swamp RW=Mountain Meadows GU=Treeland Lake I'm not much for creative names .