Description
| Set: | Modern Masters 2017 |
| Type: | Land |
| Rarity: | mythic |
As this land enters, choose a creature type.
{T}: Add {C}.
{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.

![Cavern of Souls (232) [Modern Masters 2017]](http://alwaysgames.ca/cdn/shop/files/128633_in_1000x1000_d845c533-3f3d-4ee5-ab8c-8037b2f2bfb8.jpg?v=1771491968&width=672)