The Master of Keys (Commander) - Expensive Optimized Combo

The Master of Keys
Rank #300
4decks
As CommanderAs CardAverage DeckDecksView Precon
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Budget
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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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Commander Spellbook
Moxfield
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Creatures
Instants
Sorceries
Utility Artifacts
Enchantments
Utility Lands
Mana Artifacts
Lands
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Tinybones Joins Up
100%inclusion4 decks4 decks
99%synergy
Abdel Adrian, Gorion's Ward
100%inclusion4 decks4 decks
98%synergy
Dance of the Dead
100%inclusion4 decks4 decks
98%synergy
Dress Down
100%inclusion4 decks4 decks
98%synergy
Valley Floodcaller
100%inclusion4 decks4 decks
96%synergy
Necromancy
100%inclusion4 decks4 decks
96%synergy
Ranger-Captain of Eos
100%inclusion4 decks4 decks
94%synergy
Mental Misstep
100%inclusion4 decks4 decks
94%synergy
Mindbreak Trap
100%inclusion4 decks4 decks
94%synergy
Entomb
100%inclusion4 decks4 decks
93%synergy
Top Cards
Lotho, Corrupt Shirriff
100%inclusion4 decks4 decks
83%synergy
Sevinne's Reclamation
100%inclusion4 decks4 decks
91%synergy
Dark Ritual
100%inclusion4 decks4 decks
80%synergy
Esper Sentinel
100%inclusion4 decks4 decks
73%synergy
Flusterstorm
100%inclusion4 decks4 decks
92%synergy
Mystic Remora
100%inclusion4 decks4 decks
80%synergy
Silence
100%inclusion4 decks4 decks
90%synergy
Swan Song
100%inclusion4 decks4 decks
80%synergy
Force of Negation
100%inclusion4 decks4 decks
88%synergy
Swords to Plowshares
100%inclusion4 decks4 decks
32%synergy
Game Changers
Smothering Tithe
100%inclusion4 decks4 decks
70%synergy
Ancient Tomb
100%inclusion4 decks4 decks
88%synergy
Rhystic Study
100%inclusion4 decks4 decks
70%synergy
Demonic Tutor
100%inclusion4 decks4 decks
80%synergy
Force of Will
100%inclusion4 decks4 decks
88%synergy
Enlightened Tutor
100%inclusion4 decks4 decks
81%synergy
Orcish Bowmasters
100%inclusion4 decks4 decks
90%synergy
Chrome Mox
100%inclusion4 decks4 decks
91%synergy
Vampiric Tutor
100%inclusion4 decks4 decks
84%synergy
Mox Diamond
100%inclusion4 decks4 decks
93%synergy
Creatures
Wan Shi Tong, Librarian
100%inclusion1 decks1 decks
95%synergy
Thassa's Oracle
75%inclusion3 decks4 decks
66%synergy
Opposition Agent
75%inclusion3 decks4 decks
67%synergy
Voice of Victory
75%inclusion3 decks4 decks
67%synergy
Mockingbird
75%inclusion3 decks4 decks
71%synergy
Grand Abolisher
75%inclusion3 decks4 decks
60%synergy
Archivist of Oghma
50%inclusion2 decks4 decks
44%synergy
Snapcaster Mage
50%inclusion2 decks4 decks
48%synergy
Lurrus of the Dream-Den
50%inclusion2 decks4 decks
49%synergy
Hedron Crab
50%inclusion2 decks4 decks
49%synergy
Auriok Salvagers
50%inclusion2 decks4 decks
50%synergy
Displacer Kitten
25%inclusion1 decks4 decks
18%synergy
Sheoldred, the Apocalypse
25%inclusion1 decks4 decks
16%synergy
Leonin Relic-Warder
25%inclusion1 decks4 decks
25%synergy
Pollywog Prodigy
25%inclusion1 decks4 decks
21%synergy
Talion, the Kindly Lord
25%inclusion1 decks4 decks
18%synergy
Drannith Magistrate
25%inclusion1 decks4 decks
18%synergy
Grim Guardian
25%inclusion1 decks4 decks
23%synergy
Hullbreaker Horror
25%inclusion1 decks4 decks
19%synergy
Psychic Frog
25%inclusion1 decks4 decks
18%synergy
Ledger Shredder
25%inclusion1 decks4 decks
16%synergy
Ghostly Pilferer
25%inclusion1 decks4 decks
18%synergy
Tataru Taru
25%inclusion1 decks4 decks
16%synergy
Instants
Pact of Negation
100%inclusion4 decks4 decks
93%synergy
Cabal Ritual
75%inclusion3 decks4 decks
72%synergy
Into the Flood Maw
75%inclusion3 decks4 decks
71%synergy
Demonic Consultation
75%inclusion3 decks4 decks
67%synergy
Cyclonic Rift
75%inclusion3 decks4 decks
52%synergy
Tainted Pact
50%inclusion2 decks4 decks
43%synergy
An Offer You Can't Refuse
50%inclusion2 decks4 decks
22%synergy
Retraction Helix
50%inclusion2 decks4 decks
49%synergy
Intuition
50%inclusion2 decks4 decks
48%synergy
Gifts Ungiven
50%inclusion2 decks4 decks
47%synergy
Sink into Stupor
50%inclusion2 decks4 decks
37%synergy
Borne Upon a Wind
50%inclusion2 decks4 decks
45%synergy
Fierce Guardianship
50%inclusion2 decks4 decks
30%synergy
Mystical Tutor
50%inclusion2 decks4 decks
40%synergy
Deadly Rollick
25%inclusion1 decks4 decks
9%synergy
Snuff Out
25%inclusion1 decks4 decks
15%synergy
Brain Freeze
25%inclusion1 decks4 decks
24%synergy
Darkblast
25%inclusion1 decks4 decks
25%synergy
Banishing Knack
25%inclusion1 decks4 decks
25%synergy
Mana Drain
25%inclusion1 decks4 decks
8%synergy
Ad Nauseam
25%inclusion1 decks4 decks
23%synergy
Path to Exile
25%inclusion1 decks4 decks
-17%synergy
Sorceries
Imperial Seal
75%inclusion3 decks4 decks
68%synergy
Lively Dirge
50%inclusion2 decks4 decks
49%synergy
Cabal Therapy
25%inclusion1 decks4 decks
25%synergy
Diabolic Intent
25%inclusion1 decks4 decks
20%synergy
Unmarked Grave
25%inclusion1 decks4 decks
24%synergy
Demonic Counsel
25%inclusion1 decks4 decks
24%synergy
Reanimate
25%inclusion1 decks4 decks
9%synergy
Beseech the Mirror
25%inclusion1 decks4 decks
21%synergy
Nuclear Fallout
25%inclusion1 decks4 decks
25%synergy
Utility Artifacts
The One Ring
75%inclusion3 decks4 decks
63%synergy
Wishclaw Talisman
75%inclusion3 decks4 decks
67%synergy
Sensei's Divining Top
50%inclusion2 decks4 decks
41%synergy
Altar of the Brood
25%inclusion1 decks4 decks
24%synergy
Enchantments
Animate Dead
100%inclusion4 decks4 decks
90%synergy
The Meathook Massacre
75%inclusion3 decks4 decks
72%synergy
Ripples of Undeath
75%inclusion3 decks4 decks
72%synergy
Blind Obedience
75%inclusion3 decks4 decks
63%synergy
Static Prison
75%inclusion3 decks4 decks
75%synergy
Founding the Third Path
50%inclusion2 decks4 decks
50%synergy
Touch the Spirit Realm
50%inclusion2 decks4 decks
48%synergy
Mirrormade
50%inclusion2 decks4 decks
40%synergy
Copy Artifact
50%inclusion2 decks4 decks
49%synergy
Necropotence
50%inclusion2 decks4 decks
44%synergy
Counterbalance
25%inclusion1 decks4 decks
23%synergy
Hopeless Nightmare
25%inclusion1 decks4 decks
25%synergy
Amphibian Downpour
25%inclusion1 decks4 decks
20%synergy
Chthonian Nightmare
25%inclusion1 decks4 decks
24%synergy
Stillness in Motion
25%inclusion1 decks4 decks
25%synergy
Chains of Mephistopheles
25%inclusion1 decks4 decks
25%synergy
Trouble in Pairs
25%inclusion1 decks4 decks
20%synergy
Utility Lands
Otawara, Soaring City
75%inclusion3 decks4 decks
56%synergy
Urza's Saga
50%inclusion2 decks4 decks
38%synergy
Emergence Zone
50%inclusion2 decks4 decks
48%synergy
Minamo, School at Water's Edge
25%inclusion1 decks4 decks
21%synergy
Mistrise Village
25%inclusion1 decks4 decks
22%synergy
Serra's Sanctum
25%inclusion1 decks4 decks
23%synergy
Cephalid Coliseum
25%inclusion1 decks4 decks
21%synergy
City of Traitors
25%inclusion1 decks4 decks
24%synergy
Mana Artifacts
Arcane Signet
100%inclusion4 decks4 decks
12%synergy
Lotus Petal
100%inclusion4 decks4 decks
90%synergy
Talisman of Dominance
100%inclusion4 decks4 decks
50%synergy
Sol Ring
100%inclusion4 decks4 decks
10%synergy
Mox Opal
100%inclusion4 decks4 decks
92%synergy
Mana Vault
75%inclusion3 decks4 decks
66%synergy
Mox Amber
75%inclusion3 decks4 decks
69%synergy
Fellwar Stone
75%inclusion3 decks4 decks
42%synergy
Lion's Eye Diamond
75%inclusion3 decks4 decks
73%synergy
Talisman of Progress
50%inclusion2 decks4 decks
5%synergy
Talisman of Hierarchy
25%inclusion1 decks4 decks
-20%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
Misty Rainforest
100%inclusion4 decks4 decks
89%synergy
Underground Sea
100%inclusion4 decks4 decks
84%synergy
Sea of Clouds
100%inclusion4 decks4 decks
65%synergy
Godless Shrine
100%inclusion4 decks4 decks
48%synergy
Morphic Pool
100%inclusion4 decks4 decks
67%synergy
Gemstone Caverns
100%inclusion4 decks4 decks
93%synergy
Scrubland
100%inclusion4 decks4 decks
84%synergy
Mana Confluence
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
49%synergy
City of Brass
100%inclusion4 decks4 decks
85%synergy
Flooded Strand
100%inclusion4 decks4 decks
61%synergy
Bloodstained Mire
100%inclusion4 decks4 decks
89%synergy
Watery Grave
100%inclusion4 decks4 decks
49%synergy
Exotic Orchard
75%inclusion3 decks4 decks
16%synergy
Windswept Heath
75%inclusion3 decks4 decks
66%synergy
Verdant Catacombs
75%inclusion3 decks4 decks
65%synergy
Arid Mesa
75%inclusion3 decks4 decks
66%synergy
Vault of Champions
75%inclusion3 decks4 decks
43%synergy
Shadowy Backstreet
50%inclusion2 decks4 decks
37%synergy
Sink into Stupor
50%inclusion2 decks4 decks
37%synergy
Scalding Tarn
50%inclusion2 decks4 decks
39%synergy
Spire of Industry
25%inclusion1 decks4 decks
17%synergy
Raffine's Tower
25%inclusion1 decks4 decks
-16%synergy
Island
25%inclusion1 decks4 decks
-68%synergy
Meticulous Archive
25%inclusion1 decks4 decks
11%synergy
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