: Add 
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: 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.No reference price for this printing yet: not enough stores to make an average.
Run a comparison: we query the stores live, it may have arrived this morning.
1 public deck plays Cavern of Souls.
You must choose an existing creature type, such as Human or Warrior. Card types such as artifact can't be chosen.
2018-12-07 · Wizards of the CoastThe 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."
2018-12-07 · Wizards of the CoastThe 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 · Wizards of the CoastYou must choose an existing creature type, such as Human or Warrior. Card types such as artifact can't be chosen.
2023-11-10 · Wizards of the Coast
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