Cavern of Souls
1045bdc7-6fbb-4b63-9798-a2a993f95bc2
$37.25 CND
As Cavern of Souls enters the battlefield, choose a creature type.
{T}: Add {C} to your mana pool.
{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.