Cavern of Souls [Avacyn Restored] Core Set 2019 The landbound envy the birds'

The landbound envy the birds' ultimate freedom in the sky

Set: Aether Revolt Prerelease Promos Type: Legendary Artifact Rarity: Mythic Cost: {6} Whenever Gonti's Aether Heart or another artifact enters the battlefield under your control

When a creature put onto the battlefield with this scheme dies

choose a nonland card name

Cavern of Souls [Avacyn Restored] Core Set 2019 The landbound envy the birds'Set: Avacyn Restored 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.