Cavern of Souls [The List] Legendary Collection Set: Base Set Type: Water

Set: Base Set Type: Water Rarity: Holo Rare Retreat cost: 3 [WWW] Hydro Pump (40+)

Set: Double Masters Type: Artifact Creature — Construct Rarity: Rare Cost: {X}{X} Walking Ballista enters the battlefield with X +1/+1 counters on it

Set: Collectors’ Edition Type: Creature — Elemental Rarity: Rare Cost: {2}{G}{G}{G}{G} Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking

Set: Ultimate Box Topper Type: Legendary Creature — Elf Advisor Rarity: Mythic Cost: {B}{G}{U} Each opponent can't draw more than one card each turn

or immediately after this effect resolves

Cavern of Souls [The List] Legendary Collection Set: Base Set Type: WaterSet: 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.