Cavern of Souls (Borderless Alternate Art) [Double Masters 2022] Human Artificer At the beginning of the

At the beginning of the upkeep of enchanted artifact's controller

you may look at the top three cards of your library

So confusing is the Wall's appearance that few of its victims even see it move

Set: Time Spiral Type: Artifact Creature — Construct Rarity: Rare Cost: {5} Indestructible

Set: Alpha Edition Type: Instant Rarity: Common Cost: {W} Choose one —

Cavern of Souls (Borderless Alternate Art) [Double Masters 2022] Human Artificer At the beginning of theSet: Double Masters 2022 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.