The Master of Keys (Commander) - Expensive Upgraded Control

The Master of Keys
Rank #305
4decks
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Background image for What if Thassa's Oracle Were Banned?
Harvey McGuinness
Sep 23, 2025
Harvey McGuinness
What if Thassa's Oracle Were Banned?
What would happen to cEDH if Thassa's Oracle were banned tomorrow? Would the best decks fall apart? Would there be a new meta? Let's discuss.
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Utility Lands
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Dance of the Dead
100%inclusion4 decks4 decks
98%synergy
Dress Down
100%inclusion4 decks4 decks
98%synergy
Ripples of Undeath
100%inclusion4 decks4 decks
97%synergy
Amphibian Downpour
100%inclusion4 decks4 decks
95%synergy
Necromancy
100%inclusion4 decks4 decks
95%synergy
Animate Dead
100%inclusion4 decks4 decks
90%synergy
Game Changers
Smothering Tithe
75%inclusion3 decks4 decks
44%synergy
Rhystic Study
75%inclusion3 decks4 decks
44%synergy
Teferi's Protection
25%inclusion1 decks4 decks
8%synergy
Serra's Sanctum
25%inclusion1 decks4 decks
23%synergy
Intuition
25%inclusion1 decks4 decks
23%synergy
Farewell
25%inclusion1 decks4 decks
12%synergy
Gifts Ungiven
25%inclusion1 decks4 decks
23%synergy
Demonic Tutor
25%inclusion1 decks4 decks
4%synergy
Creatures
Inquisitive Glimmer
75%inclusion3 decks4 decks
68%synergy
Fear of Impostors
75%inclusion3 decks4 decks
74%synergy
Gravebreaker Lamia
50%inclusion2 decks4 decks
49%synergy
Overlord of the Floodpits
50%inclusion2 decks4 decks
46%synergy
Demon of Fate's Design
50%inclusion2 decks4 decks
45%synergy
Doomwake Giant
50%inclusion2 decks4 decks
44%synergy
Heliod, the Radiant Dawn
50%inclusion2 decks4 decks
46%synergy
Entity Tracker
50%inclusion2 decks4 decks
44%synergy
Abdel Adrian, Gorion's Ward
50%inclusion2 decks4 decks
48%synergy
Witch Enchanter
25%inclusion1 decks4 decks
18%synergy
Stenn, Paranoid Partisan
25%inclusion1 decks4 decks
24%synergy
Scrabbling Skullcrab
25%inclusion1 decks4 decks
24%synergy
Starfield Mystic
25%inclusion1 decks4 decks
18%synergy
Lurrus of the Dream-Den
25%inclusion1 decks4 decks
23%synergy
Archon of Sun's Grace
25%inclusion1 decks4 decks
20%synergy
Doom Whisperer
25%inclusion1 decks4 decks
24%synergy
Agent of Treachery
25%inclusion1 decks4 decks
23%synergy
Jace, Vryn's Prodigy
25%inclusion1 decks4 decks
24%synergy
Esper Sentinel
25%inclusion1 decks4 decks
-2%synergy
Sage of Mysteries
25%inclusion1 decks4 decks
25%synergy
Overlord of the Balemurk
25%inclusion1 decks4 decks
23%synergy
Hedron Crab
25%inclusion1 decks4 decks
24%synergy
Leonin Relic-Warder
25%inclusion1 decks4 decks
25%synergy
Mesa Enchantress
25%inclusion1 decks4 decks
16%synergy
Angel of Suffering
25%inclusion1 decks4 decks
25%synergy
Laboratory Maniac
25%inclusion1 decks4 decks
22%synergy
Neerdiv, Devious Diver
25%inclusion1 decks4 decks
25%synergy
Sun Titan
25%inclusion1 decks4 decks
17%synergy
Grim Guardian
25%inclusion1 decks4 decks
22%synergy
Nezahal, Primal Tide
25%inclusion1 decks4 decks
21%synergy
Ghostly Dancers
25%inclusion1 decks4 decks
22%synergy
Valgavoth, Terror Eater
25%inclusion1 decks4 decks
22%synergy
Zur the Enchanter
25%inclusion1 decks4 decks
20%synergy
Psychic Frog
25%inclusion1 decks4 decks
18%synergy
Ledger Shredder
25%inclusion1 decks4 decks
16%synergy
Mirror-Mad Phantasm
25%inclusion1 decks4 decks
25%synergy
Instants
An Offer You Can't Refuse
75%inclusion3 decks4 decks
48%synergy
Entomb
75%inclusion3 decks4 decks
68%synergy
Mana Drain
75%inclusion3 decks4 decks
58%synergy
Swan Song
75%inclusion3 decks4 decks
55%synergy
Sink into Stupor
75%inclusion3 decks4 decks
62%synergy
Fell the Profane
50%inclusion2 decks4 decks
41%synergy
Swords to Plowshares
50%inclusion2 decks4 decks
-18%synergy
Dovin's Veto
25%inclusion1 decks4 decks
-1%synergy
Brain Freeze
25%inclusion1 decks4 decks
24%synergy
Darkblast
25%inclusion1 decks4 decks
25%synergy
Strix Serenade
25%inclusion1 decks4 decks
21%synergy
Jwari Disruption
25%inclusion1 decks4 decks
24%synergy
Arcane Denial
25%inclusion1 decks4 decks
5%synergy
Faithful Mending
25%inclusion1 decks4 decks
21%synergy
Otherworldly Gaze
25%inclusion1 decks4 decks
23%synergy
Sorceries
Sevinne's Reclamation
75%inclusion3 decks4 decks
66%synergy
Glimpse the Unthinkable
50%inclusion2 decks4 decks
50%synergy
Toxic Deluge
50%inclusion2 decks4 decks
30%synergy
Supreme Verdict
25%inclusion1 decks4 decks
10%synergy
Windfall
25%inclusion1 decks4 decks
12%synergy
Resurgent Belief
25%inclusion1 decks4 decks
23%synergy
Sea Gate Restoration
25%inclusion1 decks4 decks
22%synergy
Replenish
25%inclusion1 decks4 decks
23%synergy
Scheming Symmetry
25%inclusion1 decks4 decks
24%synergy
Demonic Counsel
25%inclusion1 decks4 decks
24%synergy
Slaughter the Strong
25%inclusion1 decks4 decks
25%synergy
Reanimate
25%inclusion1 decks4 decks
9%synergy
Damn
25%inclusion1 decks4 decks
5%synergy
Winternight Stories
25%inclusion1 decks4 decks
24%synergy
Singularity Rupture
25%inclusion1 decks4 decks
23%synergy
Space-Time Anomaly
25%inclusion1 decks4 decks
23%synergy
Utility Artifacts
Mesmeric Orb
75%inclusion3 decks4 decks
74%synergy
Perpetual Timepiece
25%inclusion1 decks4 decks
25%synergy
Palantír of Orthanc
25%inclusion1 decks4 decks
24%synergy
Enchantments
Out of the Tombs
75%inclusion3 decks4 decks
75%synergy
Estrid's Invocation
75%inclusion3 decks4 decks
70%synergy
Mystic Remora
75%inclusion3 decks4 decks
54%synergy
Seal of Cleansing
75%inclusion3 decks4 decks
74%synergy
Static Prison
75%inclusion3 decks4 decks
75%synergy
Stillness in Motion
75%inclusion3 decks4 decks
75%synergy
Greater Auramancy
75%inclusion3 decks4 decks
71%synergy
Ghostly Prison
75%inclusion3 decks4 decks
53%synergy
Propaganda
75%inclusion3 decks4 decks
47%synergy
Seal of Removal
75%inclusion3 decks4 decks
74%synergy
Darksteel Mutation
50%inclusion2 decks4 decks
44%synergy
The Meathook Massacre
50%inclusion2 decks4 decks
47%synergy
Grasp of Fate
50%inclusion2 decks4 decks
44%synergy
Court of Cunning
50%inclusion2 decks4 decks
49%synergy
Imprisoned in the Moon
50%inclusion2 decks4 decks
43%synergy
Chronic Flooding
50%inclusion2 decks4 decks
50%synergy
Mirrormade
50%inclusion2 decks4 decks
40%synergy
Out of Time
50%inclusion2 decks4 decks
49%synergy
Shark Typhoon
50%inclusion2 decks4 decks
44%synergy
Sphere of Safety
50%inclusion2 decks4 decks
41%synergy
Cemetery Tampering
50%inclusion2 decks4 decks
49%synergy
Leyline of Anticipation
50%inclusion2 decks4 decks
46%synergy
Solitary Confinement
50%inclusion2 decks4 decks
48%synergy
Trouble in Pairs
50%inclusion2 decks4 decks
45%synergy
Search for Azcanta
50%inclusion2 decks4 decks
49%synergy
Sinister Concoction
50%inclusion2 decks4 decks
50%synergy
Chakra Meditation
33%inclusion1 decks3 decks
33%synergy
Momentum Breaker
25%inclusion1 decks4 decks
25%synergy
Parallax Wave
25%inclusion1 decks4 decks
25%synergy
Smuggler's Share
25%inclusion1 decks4 decks
23%synergy
Cacophony Unleashed
25%inclusion1 decks4 decks
23%synergy
Dissipation Field
25%inclusion1 decks4 decks
24%synergy
Sigil of the Empty Throne
25%inclusion1 decks4 decks
19%synergy
Tinybones Joins Up
25%inclusion1 decks4 decks
24%synergy
Moat
25%inclusion1 decks4 decks
25%synergy
Utter Insignificance
25%inclusion1 decks4 decks
24%synergy
Corroding Dragonstorm
25%inclusion1 decks4 decks
25%synergy
Soul Snare
25%inclusion1 decks4 decks
25%synergy
Touch the Spirit Realm
25%inclusion1 decks4 decks
23%synergy
Authority of the Consuls
25%inclusion1 decks4 decks
13%synergy
Blind Obedience
25%inclusion1 decks4 decks
13%synergy
Hopeless Nightmare
25%inclusion1 decks4 decks
25%synergy
Attunement
25%inclusion1 decks4 decks
25%synergy
Dance of Many
25%inclusion1 decks4 decks
25%synergy
Omniscience
25%inclusion1 decks4 decks
21%synergy
Copy Artifact
25%inclusion1 decks4 decks
24%synergy
Copy Enchantment
25%inclusion1 decks4 decks
20%synergy
Charitable Levy
25%inclusion1 decks4 decks
25%synergy
Forbidden Crypt
25%inclusion1 decks4 decks
25%synergy
The Tale of Tamiyo
25%inclusion1 decks4 decks
25%synergy
Planeswalkers
Jace, the Perfected Mind
25%inclusion1 decks4 decks
25%synergy
Ashiok, Dream Render
25%inclusion1 decks4 decks
23%synergy
Utility Lands
Hall of Heliod's Generosity
50%inclusion2 decks4 decks
37%synergy
Takenuma, Abandoned Mire
50%inclusion2 decks4 decks
44%synergy
Urborg, Tomb of Yawgmoth
50%inclusion2 decks4 decks
37%synergy
Otawara, Soaring City
50%inclusion2 decks4 decks
31%synergy
Bojuka Bog
25%inclusion1 decks4 decks
-2%synergy
Urza's Saga
25%inclusion1 decks4 decks
13%synergy
Geier Reach Sanitarium
25%inclusion1 decks4 decks
21%synergy
Cephalid Coliseum
25%inclusion1 decks4 decks
21%synergy
Mana Artifacts
Sol Ring
100%inclusion4 decks4 decks
10%synergy
Arcane Signet
75%inclusion3 decks4 decks
-13%synergy
Talisman of Progress
25%inclusion1 decks4 decks
-19%synergy
Talisman of Dominance
25%inclusion1 decks4 decks
-25%synergy
Fellwar Stone
25%inclusion1 decks4 decks
-8%synergy
Talisman of Hierarchy
25%inclusion1 decks4 decks
-19%synergy
Lands
Tundra
100%inclusion4 decks4 decks
84%synergy
Command Tower
100%inclusion4 decks4 decks
7%synergy
Undercity Sewers
100%inclusion4 decks4 decks
86%synergy
Shadowy Backstreet
100%inclusion4 decks4 decks
87%synergy
Underground Sea
100%inclusion4 decks4 decks
84%synergy
Swamp
100%inclusion4 decks4 decks
8%synergy
Sea of Clouds
100%inclusion4 decks4 decks
65%synergy
Godless Shrine
100%inclusion4 decks4 decks
49%synergy
Island
100%inclusion4 decks4 decks
7%synergy
Plains
100%inclusion4 decks4 decks
8%synergy
Morphic Pool
100%inclusion4 decks4 decks
66%synergy
Scrubland
100%inclusion4 decks4 decks
84%synergy
Meticulous Archive
100%inclusion4 decks4 decks
86%synergy
Marsh Flats
100%inclusion4 decks4 decks
64%synergy
Vault of Champions
100%inclusion4 decks4 decks
67%synergy
Polluted Delta
100%inclusion4 decks4 decks
62%synergy
Hallowed Fountain
100%inclusion4 decks4 decks
50%synergy
Flooded Strand
100%inclusion4 decks4 decks
62%synergy
Watery Grave
100%inclusion4 decks4 decks
49%synergy
Prismatic Vista
75%inclusion3 decks4 decks
71%synergy
Misty Rainforest
75%inclusion3 decks4 decks
64%synergy
Windswept Heath
75%inclusion3 decks4 decks
65%synergy
Raffine's Tower
75%inclusion3 decks4 decks
34%synergy
Sink into Stupor
75%inclusion3 decks4 decks
62%synergy
Arid Mesa
75%inclusion3 decks4 decks
65%synergy
Scalding Tarn
75%inclusion3 decks4 decks
64%synergy
Floodfarm Verge
75%inclusion3 decks4 decks
64%synergy
Fell the Profane
50%inclusion2 decks4 decks
41%synergy
Exotic Orchard
50%inclusion2 decks4 decks
-9%synergy
Verdant Catacombs
50%inclusion2 decks4 decks
40%synergy
Shattered Sanctum
50%inclusion2 decks4 decks
34%synergy
Mana Confluence
50%inclusion2 decks4 decks
36%synergy
Gloomlake Verge
50%inclusion2 decks4 decks
39%synergy
Bloodstained Mire
50%inclusion2 decks4 decks
39%synergy
Glacial Fortress
25%inclusion1 decks4 decks
-17%synergy
Witch Enchanter
25%inclusion1 decks4 decks
18%synergy
Bleachbone Verge
25%inclusion1 decks4 decks
16%synergy
Caves of Koilos
25%inclusion1 decks4 decks
-11%synergy
Sea Gate Restoration
25%inclusion1 decks4 decks
22%synergy
Shipwreck Marsh
25%inclusion1 decks4 decks
4%synergy
Reflecting Pool
25%inclusion1 decks4 decks
17%synergy
Isolated Chapel
25%inclusion1 decks4 decks
-15%synergy
Drowned Catacomb
25%inclusion1 decks4 decks
-12%synergy
Underground River
25%inclusion1 decks4 decks
-9%synergy
Jwari Disruption
25%inclusion1 decks4 decks
24%synergy
Forbidden Orchard
25%inclusion1 decks4 decks
23%synergy
Adarkar Wastes
25%inclusion1 decks4 decks
-7%synergy
Sunken Ruins
25%inclusion1 decks4 decks
16%synergy
Mystic Gate
25%inclusion1 decks4 decks
20%synergy
Deserted Beach
25%inclusion1 decks4 decks
4%synergy
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