The Master of Keys (Commander) - Expensive Upgraded Control

The Master of Keys
Rank #302
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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Archidekt
Commander Spellbook
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Instants
Sorceries
Utility Artifacts
Enchantments
Planeswalkers
Utility Lands
Mana Artifacts
Lands
Back to Top
Animate Dead
100%inclusion4 decks4 decks
90%synergy
Game Changers
Smothering Tithe
50%inclusion2 decks4 decks
19%synergy
Rhystic Study
50%inclusion2 decks4 decks
19%synergy
Teferi's Protection
25%inclusion1 decks4 decks
9%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
22%synergy
Fierce Guardianship
25%inclusion1 decks4 decks
5%synergy
Creatures
Gravebreaker Lamia
50%inclusion2 decks4 decks
49%synergy
Overlord of the Floodpits
50%inclusion2 decks4 decks
46%synergy
Inquisitive Glimmer
50%inclusion2 decks4 decks
43%synergy
Demon of Fate's Design
50%inclusion2 decks4 decks
45%synergy
Fear of Impostors
50%inclusion2 decks4 decks
49%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
Psychic Frog
50%inclusion2 decks4 decks
43%synergy
Witch Enchanter
25%inclusion1 decks4 decks
18%synergy
Scrabbling Skullcrab
25%inclusion1 decks4 decks
24%synergy
Ob Nixilis, the Fallen
25%inclusion1 decks4 decks
25%synergy
Crystal Barricade
25%inclusion1 decks4 decks
24%synergy
Soratami Savant
25%inclusion1 decks4 decks
25%synergy
Baleful Strix
25%inclusion1 decks4 decks
4%synergy
Lurrus of the Dream-Den
25%inclusion1 decks4 decks
23%synergy
Cephalid Illusionist
25%inclusion1 decks4 decks
25%synergy
Scholar of New Horizons
25%inclusion1 decks4 decks
24%synergy
Archon of Sun's Grace
25%inclusion1 decks4 decks
20%synergy
Agent of Treachery
25%inclusion1 decks4 decks
23%synergy
Jace, Vryn's Prodigy
25%inclusion1 decks4 decks
25%synergy
Esper Sentinel
25%inclusion1 decks4 decks
-2%synergy
Sage of Mysteries
25%inclusion1 decks4 decks
25%synergy
Tiller Engine
25%inclusion1 decks4 decks
25%synergy
Overlord of the Balemurk
25%inclusion1 decks4 decks
23%synergy
Hedron Crab
25%inclusion1 decks4 decks
24%synergy
Walking Atlas
25%inclusion1 decks4 decks
24%synergy
Leonin Relic-Warder
25%inclusion1 decks4 decks
25%synergy
Mesa Enchantress
25%inclusion1 decks4 decks
16%synergy
Wonderscape Sage
25%inclusion1 decks4 decks
25%synergy
Spirited Companion
25%inclusion1 decks4 decks
23%synergy
Neerdiv, Devious Diver
25%inclusion1 decks4 decks
25%synergy
Sun Titan
25%inclusion1 decks4 decks
17%synergy
Tameshi, Reality Architect
25%inclusion1 decks4 decks
24%synergy
Grim Guardian
25%inclusion1 decks4 decks
23%synergy
Nezahal, Primal Tide
25%inclusion1 decks4 decks
21%synergy
Ghostly Dancers
25%inclusion1 decks4 decks
23%synergy
Valgavoth, Terror Eater
25%inclusion1 decks4 decks
22%synergy
Undercity Informer
25%inclusion1 decks4 decks
25%synergy
Dour Port-Mage
25%inclusion1 decks4 decks
24%synergy
Zur the Enchanter
25%inclusion1 decks4 decks
20%synergy
Emry, Lurker of the Loch
25%inclusion1 decks4 decks
20%synergy
Spellskite
25%inclusion1 decks4 decks
22%synergy
Soldevi Adnate
25%inclusion1 decks4 decks
25%synergy
Scaretiller
25%inclusion1 decks4 decks
25%synergy
Ledger Shredder
25%inclusion1 decks4 decks
16%synergy
River Kelpie
25%inclusion1 decks4 decks
25%synergy
Instants
Mana Drain
75%inclusion3 decks4 decks
58%synergy
Swords to Plowshares
75%inclusion3 decks4 decks
7%synergy
Sink into Stupor
75%inclusion3 decks4 decks
62%synergy
Fell the Profane
50%inclusion2 decks4 decks
41%synergy
An Offer You Can't Refuse
50%inclusion2 decks4 decks
23%synergy
Entomb
50%inclusion2 decks4 decks
43%synergy
Swan Song
50%inclusion2 decks4 decks
30%synergy
Dovin's Veto
25%inclusion1 decks4 decks
-1%synergy
Faith's Reward
25%inclusion1 decks4 decks
25%synergy
Brain Freeze
25%inclusion1 decks4 decks
24%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
Counterspell
25%inclusion1 decks4 decks
-17%synergy
Path to Exile
25%inclusion1 decks4 decks
-17%synergy
Consult the Star Charts
25%inclusion1 decks4 decks
24%synergy
Sorceries
Sevinne's Reclamation
75%inclusion3 decks4 decks
66%synergy
Toxic Deluge
50%inclusion2 decks4 decks
30%synergy
Supreme Verdict
25%inclusion1 decks4 decks
10%synergy
Diabolic Intent
25%inclusion1 decks4 decks
20%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
Glimpse the Unthinkable
25%inclusion1 decks4 decks
25%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
Utility Artifacts
Mesmeric Orb
50%inclusion2 decks4 decks
49%synergy
Zuran Orb
25%inclusion1 decks4 decks
25%synergy
Soul-Guide Lantern
25%inclusion1 decks4 decks
24%synergy
Crucible of Worlds
25%inclusion1 decks4 decks
24%synergy
Aether Spellbomb
25%inclusion1 decks4 decks
24%synergy
Mishra's Bauble
25%inclusion1 decks4 decks
23%synergy
Palantír of Orthanc
25%inclusion1 decks4 decks
24%synergy
Expedition Map
25%inclusion1 decks4 decks
24%synergy
Lightning Greaves
25%inclusion1 decks4 decks
2%synergy
Amulet of Vigor
25%inclusion1 decks4 decks
25%synergy
Shorikai, Genesis Engine
25%inclusion1 decks4 decks
21%synergy
Archaeomancer's Map
25%inclusion1 decks4 decks
20%synergy
Enchantments
Dance of the Dead
75%inclusion3 decks4 decks
73%synergy
Ripples of Undeath
75%inclusion3 decks4 decks
72%synergy
Necromancy
75%inclusion3 decks4 decks
70%synergy
Mystic Remora
75%inclusion3 decks4 decks
54%synergy
Amphibian Downpour
75%inclusion3 decks4 decks
70%synergy
Dress Down
75%inclusion3 decks4 decks
73%synergy
Search for Azcanta
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
Out of the Tombs
50%inclusion2 decks4 decks
50%synergy
Touch the Spirit Realm
50%inclusion2 decks4 decks
48%synergy
Blind Obedience
50%inclusion2 decks4 decks
38%synergy
Estrid's Invocation
50%inclusion2 decks4 decks
45%synergy
Out of Time
50%inclusion2 decks4 decks
49%synergy
Charitable Levy
50%inclusion2 decks4 decks
50%synergy
Shark Typhoon
50%inclusion2 decks4 decks
44%synergy
Sphere of Safety
50%inclusion2 decks4 decks
41%synergy
Seal of Cleansing
50%inclusion2 decks4 decks
49%synergy
Static Prison
50%inclusion2 decks4 decks
50%synergy
Stillness in Motion
50%inclusion2 decks4 decks
50%synergy
Greater Auramancy
50%inclusion2 decks4 decks
46%synergy
Ghostly Prison
50%inclusion2 decks4 decks
28%synergy
Propaganda
50%inclusion2 decks4 decks
22%synergy
Seal of Removal
50%inclusion2 decks4 decks
49%synergy
Trouble in Pairs
50%inclusion2 decks4 decks
45%synergy
Momentum Breaker
25%inclusion1 decks4 decks
25%synergy
Parallax Wave
25%inclusion1 decks4 decks
25%synergy
Trade Routes
25%inclusion1 decks4 decks
25%synergy
Smuggler's Share
25%inclusion1 decks4 decks
23%synergy
Cacophony Unleashed
25%inclusion1 decks4 decks
23%synergy
Imprisoned in the Moon
25%inclusion1 decks4 decks
18%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
Chronic Flooding
25%inclusion1 decks4 decks
25%synergy
Corroding Dragonstorm
25%inclusion1 decks4 decks
25%synergy
Soul Snare
25%inclusion1 decks4 decks
25%synergy
Hopeless Nightmare
25%inclusion1 decks4 decks
25%synergy
Vampiric Rites
25%inclusion1 decks4 decks
24%synergy
Dance of Many
25%inclusion1 decks4 decks
25%synergy
Omniscience
25%inclusion1 decks4 decks
21%synergy
Retreat to Hagra
25%inclusion1 decks4 decks
25%synergy
Mirrormade
25%inclusion1 decks4 decks
15%synergy
Copy Artifact
25%inclusion1 decks4 decks
24%synergy
Forbidden Crypt
25%inclusion1 decks4 decks
25%synergy
Cemetery Tampering
25%inclusion1 decks4 decks
24%synergy
Leyline of Anticipation
25%inclusion1 decks4 decks
21%synergy
Planeswalkers
Jace, the Perfected Mind
25%inclusion1 decks4 decks
25%synergy
Utility Lands
Takenuma, Abandoned Mire
75%inclusion3 decks4 decks
69%synergy
Otawara, Soaring City
75%inclusion3 decks4 decks
56%synergy
Bojuka Bog
50%inclusion2 decks4 decks
23%synergy
Hall of Heliod's Generosity
50%inclusion2 decks4 decks
37%synergy
Urza's Saga
50%inclusion2 decks4 decks
38%synergy
Geier Reach Sanitarium
50%inclusion2 decks4 decks
46%synergy
Cephalid Coliseum
50%inclusion2 decks4 decks
46%synergy
Urborg, Tomb of Yawgmoth
50%inclusion2 decks4 decks
37%synergy
Ancient Den
25%inclusion1 decks4 decks
16%synergy
Vault of Whispers
25%inclusion1 decks4 decks
17%synergy
Mystic Sanctuary
25%inclusion1 decks4 decks
21%synergy
Seat of the Synod
25%inclusion1 decks4 decks
16%synergy
Tolaria West
25%inclusion1 decks4 decks
24%synergy
Oboro, Palace in the Clouds
25%inclusion1 decks4 decks
25%synergy
Eiganjo, Seat of the Empire
25%inclusion1 decks4 decks
20%synergy
Eumidian Hatchery
25%inclusion1 decks4 decks
25%synergy
Mana Artifacts
Arcane Signet
100%inclusion4 decks4 decks
12%synergy
Sol Ring
100%inclusion4 decks4 decks
10%synergy
Talisman of Progress
25%inclusion1 decks4 decks
-19%synergy
Lotus Bloom
25%inclusion1 decks4 decks
25%synergy
Lotus Petal
25%inclusion1 decks4 decks
15%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
Paradise Mantle
25%inclusion1 decks4 decks
25%synergy
Mox Opal
25%inclusion1 decks4 decks
17%synergy
Lands
Tundra
100%inclusion4 decks4 decks
84%synergy
Command Tower
100%inclusion4 decks4 decks
7%synergy
Undercity Sewers
100%inclusion4 decks4 decks
85%synergy
Shadowy Backstreet
100%inclusion4 decks4 decks
87%synergy
Underground Sea
100%inclusion4 decks4 decks
84%synergy
Raffine's Tower
100%inclusion4 decks4 decks
59%synergy
Godless Shrine
100%inclusion4 decks4 decks
49%synergy
Scrubland
100%inclusion4 decks4 decks
84%synergy
Meticulous Archive
100%inclusion4 decks4 decks
86%synergy
Marsh Flats
100%inclusion4 decks4 decks
64%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
Misty Rainforest
75%inclusion3 decks4 decks
64%synergy
Windswept Heath
75%inclusion3 decks4 decks
65%synergy
Swamp
75%inclusion3 decks4 decks
-17%synergy
Sea of Clouds
75%inclusion3 decks4 decks
40%synergy
Island
75%inclusion3 decks4 decks
-18%synergy
Plains
75%inclusion3 decks4 decks
-17%synergy
Sink into Stupor
75%inclusion3 decks4 decks
62%synergy
Morphic Pool
75%inclusion3 decks4 decks
41%synergy
Arid Mesa
75%inclusion3 decks4 decks
65%synergy
Scalding Tarn
75%inclusion3 decks4 decks
64%synergy
Vault of Champions
75%inclusion3 decks4 decks
43%synergy
Prismatic Vista
50%inclusion2 decks4 decks
46%synergy
Fell the Profane
50%inclusion2 decks4 decks
41%synergy
Verdant Catacombs
50%inclusion2 decks4 decks
40%synergy
Shattered Sanctum
50%inclusion2 decks4 decks
34%synergy
Gloomlake Verge
50%inclusion2 decks4 decks
39%synergy
Floodfarm 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
Azorius Chancery
25%inclusion1 decks4 decks
11%synergy
Exotic Orchard
25%inclusion1 decks4 decks
-34%synergy
Bleachbone Verge
25%inclusion1 decks4 decks
16%synergy
Dimir Aqueduct
25%inclusion1 decks4 decks
12%synergy
Sea Gate Restoration
25%inclusion1 decks4 decks
22%synergy
Snow-Covered Island
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
-16%synergy
Drowned Catacomb
25%inclusion1 decks4 decks
-12%synergy
Jwari Disruption
25%inclusion1 decks4 decks
24%synergy
Mana Confluence
25%inclusion1 decks4 decks
11%synergy
Deserted Beach
25%inclusion1 decks4 decks
4%synergy
City of Brass
25%inclusion1 decks4 decks
10%synergy
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