魂の洞窟/Cavern of Souls

Land -
As Cavern of Souls enters the battlefield, choose a creature type. <CR>
{T}: Add {C} to your mana pool. <CR>
{T}: Add one mana of any color to your mana pool. Spend this mana only to cast a creature spell of the chosen type, and that spell can't be countered.

Land -
As Cavern of Souls enters the battlefield, choose a creature type. <CR>
{T}: Add {C}. <CR>
{T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can't be countered.

Land -
As Cavern of Souls enters the battlefield, choose a creature type. <CR>
{T}: Add {1} to your mana pool. <CR>
{T}: Add one mana of any color to your mana pool. Spend this mana only to cast a creature spell of the chosen type, and that spell can't be countered.

Land -
As Cavern of Souls enters the battlefield, choose a creature type. <CR>
{T}: Add {C} to your mana pool. <CR>
{T}: Add one mana of any color to your mana pool. Spend this mana only to cast a creature spell of the chosen type, and that spell can't be countered.