Jace protects himself with his attack tax and uses his +1 to filter toward a pile of eight-mana bombs. Cheap token makers supply fodder, and Jace's −3, Mass Polymorph, Synthetic Destiny and Proteus Staff turn a 1/1 into a random big creature off the top of the library. Since the creature suite is almost entirely huge flyers, every token or small body cashed in tends to hit something like Archon of Cruelty, Avacyn, Absolute Virtue or Memnarch. Signets, talismans, cantrips and a light counterspell suite hold things together until then. How it wins: Polymorphing tokens into a board of huge evasive flyers, backed by Archfiend of Despair's life-loss doubling and Archon of Cruelty's drain, then attacking through mass indestructible and protection effects. Key roles: - Polymorph conversion: Jace, Multiverse Architect's −3 and the mass exile-and-reveal spells swap cheap creatures or tokens for whatever creature turns up next in the library, and with the count weighted toward huge flyers that cheats in game-winning bodies far below cost (Mass Polymorph, Synthetic Destiny, Proteus Staff). - Token fodder: Cheap and scalable token producers create the bodies to feed polymorph effects, chump-block to protect Jace, and in big X cases also wipe the opposing board (Secure the Wastes, Martial Coup, Lingering Souls). - Bomb payload: The few real creatures are eight-plus mana flyers with value, recursion or protection, so revealed hits swing games outright (Archon of Cruelty, Avacyn, Angel of Horror, Absolute Virtue). - Spellslinger value engine: Cheap cantrips and instants refill the hand and sculpt the top of the library. Several engines also reward noncreature spells or token creation with extra cards or Shark bodies, and draw-then-put-back effects can stack a bomb on top before a polymorph (Whirlwind of Thought, Shark Typhoon, Brainstorm). - Board protection and resets: Team-wide indestructible spells shield the transformed army or let it survive its own wraths, while sweepers and counterspells keep opponents off balance (Flawless Maneuver, Grand Crescendo, Sunfall).

Jace, Multiverse Architect decklist

• Absolute Virtue
• Arcane Signet
• Archfiend of Despair
• Archon of Cruelty
• Avacyn, Angel of Horror
• Azorius Signet
• Battlefield Forge
• Brainstorm
• Brainsurge
• Caves of Koilos
• Chaos Warp
• Chromatic Lantern
• Clifftop Retreat
• Command Tower
• Contaminated Landscape
• Currency Converter
• Darksteel Angel
• Despark
• Dig Through Time
• Dimir Signet
• Dovin's Veto
• Dreadhorde Invasion
• Drowned Catacomb
• Elspeth, Sun's Champion
• Exotic Orchard
• Fabled Passage
• Fact or Fiction
• Fatehold Annex
• Fellwar Stone
• Fetid Heath
• Flawless Maneuver
• Glacial Fortress
• Grand Crescendo
• 3× Island
• Isolated Chapel
• Izzet Signet
• Kher Keep
• Krenko's Command
• Lightning Greaves
• Lingering Souls
• Lórien Revealed
• Martial Coup
• Mass Polymorph
• Memnarch, the Warden
• Mind Stone
• 2× Mountain
• Mystic Gate
• Negate
• Nissa, Leyline Tamer
• Occult Epiphany
• Opt
• Overlord of the Mistmoors
• Path of Ancestry
• Path to Exile
• Perilous Landscape
• 2× Plains
• Ponder
• Prairie Stream
• Proteus Staff
• Radiant Summit
• Rakdos Signet
• Reflecting Pool
• Restless Anchorage
• Restless Spire
• Secure the Wastes
• Serra's Emissary
• Shark Typhoon
• Shattered Landscape
• Shivan Reef
• Skrelv's Hive
• Sol Ring
• Staff of the Storyteller
• Stingerquill Annex
• Stroke of Midnight
• Sulfur Falls
• Sulfurous Springs
• Sunfall
• Sunken Ruins
• 2× Swamp
• Swan Song
• Swiftfoot Boots
• Swords to Plowshares
• Synthetic Destiny
• Talisman of Creativity
• Talisman of Dominance
• Talisman of Indulgence
• Talisman of Progress
• Treasure Cruise
• Turbulent Crater
• Unbreakable Formation
• Underground River
• Whirlwind of Thought
• White Sun's Twilight
• Windcrag Siege