Cavern of Souls

#U32

Land

As this land enters, choose a creature type. : Add . : 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.

Legalities

standardpioneermodernlegacyvintagepaupercommanderbrawl

Rulings (4)

2018-12-07 You must choose an existing creature type, such as Human or Warrior. Card types such as artifact can't be chosen.
2018-12-07 The spell can't be countered if the mana produced by Cavern of Souls is spent to cover any cost of the spell, even an additional cost such as a kicker cost. This is true even if you use the mana to pay an additional cost while casting a spell "without paying its mana cost."
2023-11-10 The spell can't be countered if the mana produced by Cavern of Souls is spent to cover any cost of the spell, even an additional cost such as a kicker cost. This is true even if you use the mana to pay an additional cost while casting a spell "without paying its mana cost."
2023-11-10 You must choose an existing creature type, such as Human or Warrior. Card types such as artifact can't be chosen.

Frame: 2015
Promo: Yes
Finish: foil
Rarity: mythic
Promo Types: boxtopper
Border Color: black
Frame Effects: extendedart