Cavern of Souls (0410f) (Borderless) [The Lost Caverns of Ixalan] Pioneer Set: Dominaria Prerelease Promos Type:

Set: Dominaria Prerelease Promos Type: Legendary Creature — Elemental Avatar Rarity: Mythic Cost: {3}{B}{G}{U} During each of your turns

Set: Conspiracy Type: Artifact Rarity: Mythic Cost: {4} Will of the council — At the beginning of your upkeep

{1}{W}: Target non-Aura enchantment you control becomes a creature in addition to its other types and has base power and base toughness each equal to its mana value

and the slavering maws of unknown evils

Cavern of Souls (0410f) (Borderless) [The Lost Caverns of Ixalan] Pioneer Set: Dominaria Prerelease Promos Type:Set: The Lost Caverns of Ixalan Type: Land Rarity: Mythic As Cavern of Souls enters the battlefield, 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.