Ulamog, the Infinite Gyre [Rise of the Eldrazi] Modern if Clockwork Beast attacked or

if Clockwork Beast attacked or blocked this combat

A thousand rays shine forth and meld into one

Set: Fifth Edition Type: Artifact Rarity: Rare Cost: {1} Mana Vault doesn't untap during your untap step

then sacrifices the rest

Ulamog, the Infinite Gyre [Rise of the Eldrazi] Modern if Clockwork Beast attacked orSet: 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.