Cavern of Souls [Avacyn Restored] Common and that spell can't be

and that spell can't be countered

Set: Magic Player Rewards 2007 Type: Sorcery Rarity: Rare Cost: {2}{W}{W} Destroy all creatures

Unfortunately

Set: Planechase Type: Creature — Zombie Rarity: Uncommon Cost: {2}{B}{B} Zombie spells you cast cost {1} less to cast

Set: Legends Type: World Enchantment Rarity: Rare Cost: {G} Players play with their hands revealed

Cavern of Souls [Avacyn Restored] Common and that spell can't beSet: Avacyn Restored Type: Land Rare 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.