Cavern of Souls (Topper) [Ultimate Masters Box Topper] Shadows over Innistrad Promos spells you cast from your

spells you cast from your hand with mana value X or less have cascade

Corrupted Metalcraft — As long as you control three or more artifacts and an opponent has three or more poison counters

Set: Sun & Moon: Cosmic Eclipse Type: Water Rarity: Ultra Rare Retreat cost: Colorless

Set: Multiverse Legends Type: Legendary Creature — Elemental Otter Rarity: Rare Cost: {1}{U/R}{U/R} Companion — Each nonland card in your starting deck has a different name

Set: EX: Power Keepers Type: Darkness Rarity: Uncommon Retreat cost: Colorless

Cavern of Souls (Topper) [Ultimate Masters Box Topper] Shadows over Innistrad Promos spells you cast from yourSet: Ultimate Masters Box Topper 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.