Name:Rhystic Cave
ManaCost:no cost
Types:Land
A:AB$ ChooseColor | Cost$ T | AILogic$ MostProminentInComputerDeck | SubAbility$ DBMana | InstantSpeed$ True | SpellDescription$ Choose a color. Add one mana of that color to your mana pool unless any player pays {1}. Activate this ability only any time you could cast an instant.
SVar:DBMana:DB$ Mana | Cost$ 0 | Produced$ Chosen | UnlessCost$ 1 | UnlessPayer$ Player | SpellDescription$ Add one mana of the chosen color to your mana pool.
SVar:RemAIDeck:True
SVar:Picture:http://www.wizards.com/global/images/magic/general/rhystic_cave.jpg
Oracle:{T}: Choose a color. Add one mana of that color to your mana pool unless any player pays {1}. Activate this ability only any time you could cast an instant.