Cavern of Souls (Topper) [Ultimate Masters Box Topper] Frieza Clan/Frieza's Army you must choose one of

you must choose one of opponent's non-wall creatures in play

This card can attack as many of your opponent's monsters each turn as the number of Fusion Material Monsters you used for the Fusion Summon of this card

Those players sacrifice those permanents

Sam Burley

it gains haste

Cavern of Souls (Topper) [Ultimate Masters Box Topper] Frieza Clan/Frieza's Army you must choose one ofSet: 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.