Ulamog, the Defiler (Borderless) (Serialized) [Modern Horizons 3] Hydra Each Signature Spellbook contains one

Each Signature Spellbook contains one of each of the following cards:

and a grand assortment of spiked chains

cards on your field or 8 or more DON

000 Type: Enchantment Rarity: Uncommon Cost: {1}{U}{R} Whenever a land enters the battlefield under your control from anywhere other than your hand or you cast a spell from anywhere other than your hand

Ulamog, the Defiler (Borderless) (Serialized) [Modern Horizons 3] Hydra Each Signature Spellbook contains oneSet: Modern Horizons 3 Type: Legendary Creature Eldrazi Rarity: Mythic Cost: {10} When you cast this spell, target opponent exiles half their library, rounded up. WardSacrifice two permanents. Ulamog, the Defiler enters the battlefield with a number of +1 +1 counters on it equal to the greatest mana value among cards in exile. Ulamog has annihilator X, where X is the number of +1 +1 counters on it.