Darigaaz's Caldera is a uncommon Land — Lair card from Planeshift (PLS), collector number 137. Current market price: $1.10 (foil $37.49), TCGplayer market prices via Scryfall.
When this land enters, sacrifice it unless you return a non-Lair land you control to its owner's hand. {T}: Add {B}, {R}, or {G}.