Ultima turns every land into a double colorless source, since each land tapped for {C} adds an extra {C}. Forsaken Monument stacks the same doubling on any permanent tapped for {C}, and Urza lands, mana rocks and Eldrazi-specific lands push the mana even higher. All of it ramps into giant Eldrazi titans, while cost reducers, tutors and cast triggers (copied by Echoes of Eternity or chained by cascade) turn each big spell into a huge swing. Ultima's attack trigger also blights opponents' lands, stripping their colored mana and land abilities while the deck itself loses nothing, since it only wants colorless. How it wins: It lands 10+ mana Eldrazi whose cast triggers exile, steal or grant extra turns, then attacks with annihilator, flying and trample fatties to strip opponents' boards and finish them off. Key roles: - Colorless mana doubling: Ultima and a second doubler make every {C} land produce twice its mana, turning the Tron set and big lands into enormous mana pools. (Forsaken Monument, Urza's Tower, Ancient Tomb) - Cheating titan costs: Reducers and free-cast effects let the top end land years ahead of schedule. (Eye of Ugin, Ugin, the Ineffable, Darksteel Monolith) - Titan payload: Huge Eldrazi whose on-cast triggers resolve even if the creature is answered, then close with annihilator and evasion. (Ulamog, the Ceaseless Hunger, Emrakul, the Promised End, Kozilek, Butcher of Truth) - Cast-trigger amplification: Copying colorless spells, doubling their triggers, and cascading twice off big spells snowball a single titan into several. (Echoes of Eternity, Zhulodok, Void Gorger, Ugin, Eye of the Storms) - Finding the threats: Library manipulation and creature tutors keep a steady flow of titans, while big hand refills keep pace. (Mystic Forge, Sanctum of Ugin, Conduit of Ruin) - Colorless-only disruption: Mass removal of colored permanents and color-based protection punish opponents while leaving the deck's own board untouched, alongside Ultima's land blighting. (All Is Dust, Void Winnower, Null Elemental Blast)

Ultima, Origin of Oblivion decklist

• Commander's Plate
• Darksteel Monolith
• Dreamstone Hedron
• Everflowing Chalice
• Expedition Map
• Forsaken Monument
• Hedron Archive
• Lightning Greaves
• Mana Vault
• Mind Stone
• Mind's Eye
• Mystic Forge
• Portal to Phyrexia
• Sol Ring
• Swiftfoot Boots
• The Eternity Elevator
• The One Ring
• The Ten Rings
• Thought Vessel
• Thran Dynamo
• Urza's Incubator
• Worn Powerstone
• Ancient Tomb
• Arcane Lighthouse
• Blast Zone
• Bonders' Enclave
• Buried Ruin
• Darksteel Citadel
• Eldrazi Temple
• Eye of Ugin
• Muraganda Raceway
• Reliquary Tower
• Rogue's Passage
• Sanctum of Ugin
• Scavenger Grounds
• Shrine of the Forsaken Gods
• 4× Snow-Covered Wastes
• Temple of the False God
• Thespian's Stage
• Tomb of the Spirit Dragon
• Tyrite Sanctum
• Ugin's Labyrinth
• Urza's Cave
• Urza's Mine
• Urza's Power Plant
• Urza's Saga
• Urza's Tower
• Urza's Workshop
• War Room
• 8× Wastes
• Zhalfirin Void
• Artisan of Kozilek
• Breaker of Creation
• Conduit of Ruin
• Emrakul, the Exigent Doom
• Emrakul, the Promised End
• Emrakul, the World Anew
• Endbringer
• Flayer of Loyalties
• Glaring Fleshraker
• It That Betrays
• It That Heralds the End
• Kozilek, Butcher of Truth
• Kozilek, the Broken Reality
• Kozilek, the Great Distortion
• Oblivion Sower
• Omnath, Locus of the Void
• Palladium Myr
• Sire of Seven Deaths
• Solemn Simulacrum
• Spawnbed Protector
• Ulamog, the Ceaseless Hunger
• Ulamog, the Defiler
• Ulamog, the Infinite Gyre
• Void Winnower
• Wandering Archaic // Explore the Vastlands
• Zhulodok, Void Gorger
• Echoes of Eternity
• Eldritch Immunity
• Kozilek's Command
• Not of This World
• Null Elemental Blast
• Titan's Presence
• Warping Wail
• Ugin, Eye of the Storms
• Ugin, the Ineffable
• All Is Dust
• Calamity of the Titans
• Rise of the Eldrazi