Ulamog, the Defiler [Modern Horizons 3] Weatherlight Whenever the final chapter ability

Whenever the final chapter ability of a Saga you control resolves

untap each enchanted permanent you control

your opponents can't cast spells or activate abilities of artifacts

you may cast instant or sorcery spells from any graveyard

Ulamog, the Defiler [Modern Horizons 3] Weatherlight Whenever the final chapter abilitySet: 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.