Rhystic Cave
Land
: Choose a color. Add one mana of that color unless any player pays 
. Activate only as an instant.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL
Land
: Choose a color. Add one mana of that color unless any player pays . Activate only as an instant.