Cavern of Souls (0410e) (Borderless) [The Lost Caverns of Ixalan] Creature – Spirit Set: Black & White: Legendary

Set: Black & White: Legendary Treasures Type: Fire Rarity: Holo Rare Retreat cost: Colorless

Activate only if two more more creatures entered the battlefield under your control this turn

and possibly the entire world

Undercity Ruins

You may cast colorless spells and artifact spells as though they had flash

Cavern of Souls (0410e) (Borderless) [The Lost Caverns of Ixalan] Creature – Spirit Set: Black & White: LegendarySet: 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.