[B-5] The Ur-Sphincter [cEDH] by sageofsixdabs

Format: Commander

Commander: The Ur-Sphinx

Bracket: 5

DeckCheck Threat Index: 84

Deck overview

This deck is a high-powered Esper combo-control build designed around competitive acceleration, exhaustive interaction, and the compact Tivit, Seller of Secrets and Time Sieve infinite turn engine. Using The Ur-Sphinx in the command zone for passive Eminence cost reduction, the deck deploys high-impact Sphinxes and fast mana to outpace the table. Tutors like Demonic Tutor and Enlightened Tutor assemble the two-card combo by Turn 3. Once Tivit resolves, it creates 5 Clue and Treasure tokens, which Time Sieve sacrifices to take consecutive extra turns, eliminating all three opponents in combat without passing priority. The list backs this win condition with format-ceiling free countermagic (Force of Will, Pact of Negation), proactive protection (Silence), and efficient reanimation lines (Reanimate, Sharuum the Hegemon). If the primary combo is lost, the deck pivots seamlessly into overwhelming flyer combat and card advantage with Unesh, Criosphinx Sovereign and Consecrated Sphinx.

Decklist (100 cards)

  • 1 Adarkar Wastes
  • 1 Ancient Tomb
  • 1 Anguished Unmaking
  • 1 Animate Dead
  • 1 Arcane Signet
  • 1 Arid Mesa
  • 1 Black Market Connections
  • 1 Bloodstained Mire
  • 1 Cavern of Souls
  • 1 Changeling Outcast
  • 1 Chrome Mox
  • 1 City of Brass
  • 1 Command Tower
  • 1 Commandeer
  • 1 Consecrated Sphinx
  • 1 Curator of Destinies
  • 1 Curator of Mysteries
  • 1 Cyclonic Rift
  • 1 Dark Ritual
  • 1 Defiler of Dreams
  • 1 Demonic Tutor
  • 1 Denzilore Fatehold
  • 1 Dream Trawler
  • 1 Enlightened Tutor
  • 1 Exotic Orchard
  • 1 Fellwar Stone
  • 1 Fierce Guardianship
  • 1 Flooded Strand
  • 1 Flusterstorm
  • 1 Force of Negation
  • 1 Force of Will
  • 1 Frantic Search
  • 1 Gemstone Caverns
  • 1 Godless Shrine
  • 1 Grim Monolith
  • 1 Hallowed Fountain
  • 1 Herald's Horn
  • 1 Imperial Seal
  • 1 Intuition
  • 1 Island
  • 1 Kindred Discovery
  • 1 Lim-Dûl's Vault
  • 1 Lotho, Corrupt Shirriff
  • 1 Mana Confluence
  • 1 Mana Drain
  • 1 Mana Vault
  • 1 Marsh Flats
  • 1 Medomai the Ageless
  • 1 Mental Misstep
  • 1 Mindbreak Trap
  • 1 Misty Rainforest
  • 1 Morphic Pool
  • 1 Mox Diamond
  • 1 Mox Opal
  • 1 Mystic Remora
  • 1 Mystical Tutor
  • 1 Otawara, Soaring City
  • 1 Pact of Negation
  • 1 Polluted Delta
  • 1 Quantum Riddler
  • 1 Raffine's Tower
  • 1 Raffine, Scheming Seer
  • 1 Reanimate
  • 1 Rhystic Study
  • 1 Roaming Throne
  • 1 Scalding Tarn
  • 1 Scrubland
  • 1 Sea of Clouds
  • 1 Sharuum the Hegemon
  • 1 Silence
  • 1 Smothering Tithe
  • 1 Sol Ring
  • 1 Sphinx of False Conclusions
  • 1 Sphinx of Forgotten Lore
  • 1 Sphinx of the Chimes
  • 1 Sphinx of the Second Sun
  • 1 Sphinx's Approach
  • 1 Swan Song
  • 1 Swords to Plowshares
  • 1 Talisman of Dominance
  • 1 Talisman of Hierarchy
  • 1 Talisman of Progress
  • 1 The Ur-Sphinx
  • 1 Time Sieve
  • 1 Tivit, Seller of Secrets
  • 1 Toxic Deluge
  • 1 Trouble in Pairs
  • 1 Tundra
  • 1 Uldaros Theorix
  • 1 Underground Sea
  • 1 Unesh, Criosphinx Sovereign
  • 1 Urza's Incubator
  • 1 Urza's Saga
  • 1 Vampiric Tutor
  • 1 Vault of Champions
  • 1 Verdant Catacombs
  • 1 Watery Grave
  • 1 Windreader Sphinx
  • 1 Windswept Heath
  • 1 Yennett, Cryptic Sovereign