Cavern of Souls [The List] Sheep Set: Diamond & Pearl: Mysterious

Set: Diamond & Pearl: Mysterious Treasures Type: Lightning Rarity: Common Retreat cost: Colorless

At the beginning of that turn's end step

Set: 30th Anniversary Edition Type: Enchantment — Aura Rarity: Uncommon Cost: {2}{B}{B} Enchant land

Sacrifice this artifact: Target creature you control explores

Set: Expedition: Base Set Type: Supporter Rarity: Uncommon

Cavern of Souls [The List] Sheep Set: Diamond & Pearl: MysteriousSet: The List Type: Land Rarity: Rare 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.