The Lost Caverns of Ixalan Promos (plci) | ||
| #269p ⸱ Mythic ⸱ English | ||
 Variations : 1Parts— | Cavern of SoulsAs Cavern of Souls enters the battlefield, 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.
LegalitiesLegal Standardbrawl Brawl Future Legacy Modern Alchemy Pioneer Vintage Explorer Historic Standard Timeless Commander Gladiator Oathbreaker Historicbrawl Banned Duel Not Legal Penny Predh Pauper Oldschool Premodern Paupercommander RulingsThe 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."
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