Cavern of Souls [Ultimate Masters] The Dark Set: Amonkhet Invocations Type: Sorcery

Set: Amonkhet Invocations Type: Sorcery Mythic Cost: {1}{B} As an additional cost to cast this spell

Set: Masters 25 Type: Artifact Mythic Cost: {3} Creatures with power greater than the number of cards in your hand can't attack

Activate this ability only if an opponent controls more lands than you

Set: Limited Edition Beta Type: Creature — Elf Druid Common Cost: {G} {T}: Add {G}

Set: Return to Ravnica Type: Land — Swamp Mountain Rare Cost: ({T}: Add {B} or {R}

Cavern of Souls [Ultimate Masters] The Dark Set: Amonkhet Invocations Type: SorcerySet: Ultimate Masters Type: Land Mythic Cost: 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.