Cavern of Souls (0410f) (Borderless) [The Lost Caverns of Ixalan] Necron Warrior you may have an opponent

you may have an opponent gain control of it

return Viashino Sandscout to its owner's hand

return target artifact card from your graveyard to the battlefield

Exploding star in the act of becoming a black hole

Set: Mystery Booster Type: Enchantment — Aura Rarity: Uncommon Cost: {4}{B}{B} Enchant land

Cavern of Souls (0410f) (Borderless) [The Lost Caverns of Ixalan] Necron Warrior you may have an opponentSet: 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.