Ulamog, the Infinite Gyre [Rise of the Eldrazi] Rare the Stronghold serves as the

the Stronghold serves as the gathering place for the Cabal as their dark influence spreads from Urborg

that player simultaneously sacrifices the artifact and returns the artifact card to the battlefield

which possess the stability of ancient mountains

If a land card is discarded this way

If damage is prevented this way

Ulamog, the Infinite Gyre [Rise of the Eldrazi] Rare the Stronghold serves as theSet: Rise of the Eldrazi Type: Legendary Creature Eldrazi Rarity: Mythic Cost: {11} When you cast this spell, destroy target permanent. Indestructible Annihilator 4 (Whenever this creature attacks, defending player sacrifices four permanents.) When Ulamog, the Infinite Gyre is put into a graveyard from anywhere, its owner shuffles their graveyard into their library.