Land - {T}: Add {C}. <CR> {T}: Add {U} or {B}. Waterveil Cavern doesn't untap during your next untap step.
Land - {T}: Add {C}. <CR> {T}: Add {U} or {B}. This land doesn't untap during your next untap step.
Land - {T}: Add {C} to your mana pool. <CR> {T}: Add {U} or {B} to your mana pool. Waterveil Cavern doesn't untap during your next untap step.
Land - {T}: Add {1} to your mana pool. <CR> {T}: Add {U} or {B} to your mana pool. Waterveil Cavern doesn't untap during your next untap step.