The Master of Keys (Commander) - Expensive Mill

The Master of Keys
Rank #306
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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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Voracious Tome-Skimmer
50%inclusion1 decks2 decks
49%synergy
Mornsong Aria
50%inclusion1 decks2 decks
49%synergy
High Synergy Cards
Necromancy
100%inclusion28 decks28 decks
95%synergy
Silence
100%inclusion28 decks28 decks
90%synergy
Tainted Pact
96%inclusion27 decks28 decks
89%synergy
Intuition
89%inclusion25 decks28 decks
88%synergy
Abdel Adrian, Gorion's Ward
89%inclusion25 decks28 decks
88%synergy
Dance of the Dead
89%inclusion25 decks28 decks
87%synergy
Dress Down
89%inclusion25 decks28 decks
87%synergy
Entomb
93%inclusion26 decks28 decks
86%synergy
Pact of Negation
93%inclusion26 decks28 decks
85%synergy
Force of Negation
96%inclusion27 decks28 decks
84%synergy
Top Cards
Dark Ritual
100%inclusion28 decks28 decks
81%synergy
Esper Sentinel
100%inclusion28 decks28 decks
72%synergy
Mystic Remora
100%inclusion28 decks28 decks
79%synergy
Animate Dead
93%inclusion26 decks28 decks
83%synergy
Orcish Bowmasters
93%inclusion26 decks28 decks
82%synergy
Smothering Tithe
89%inclusion25 decks28 decks
57%synergy
Sevinne's Reclamation
89%inclusion25 decks28 decks
80%synergy
Mindbreak Trap
89%inclusion25 decks28 decks
82%synergy
Flusterstorm
89%inclusion25 decks28 decks
81%synergy
Demonic Consultation
89%inclusion25 decks28 decks
81%synergy
Game Changers
Ancient Tomb
100%inclusion28 decks28 decks
87%synergy
Demonic Tutor
100%inclusion28 decks28 decks
79%synergy
Force of Will
100%inclusion28 decks28 decks
87%synergy
Enlightened Tutor
100%inclusion28 decks28 decks
80%synergy
Vampiric Tutor
100%inclusion28 decks28 decks
82%synergy
Mox Diamond
100%inclusion28 decks28 decks
93%synergy
Thassa's Oracle
96%inclusion27 decks28 decks
87%synergy
Rhystic Study
96%inclusion27 decks28 decks
64%synergy
Mana Vault
96%inclusion27 decks28 decks
87%synergy
Chrome Mox
96%inclusion27 decks28 decks
87%synergy
Creatures
Wan Shi Tong, Librarian
100%inclusion3 decks3 decks
95%synergy
Grand Abolisher
89%inclusion25 decks28 decks
75%synergy
Ranger-Captain of Eos
89%inclusion25 decks28 decks
83%synergy
Lotho, Corrupt Shirriff
82%inclusion23 decks28 decks
65%synergy
Valley Floodcaller
57%inclusion16 decks28 decks
53%synergy
Opposition Agent
50%inclusion14 decks28 decks
41%synergy
Mockingbird
50%inclusion14 decks28 decks
46%synergy
Voice of Victory
47%inclusion7 decks15 decks
38%synergy
Displacer Kitten
43%inclusion12 decks28 decks
36%synergy
Drannith Magistrate
43%inclusion12 decks28 decks
35%synergy
Hullbreaker Horror
39%inclusion11 decks28 decks
33%synergy
Auriok Salvagers
39%inclusion11 decks28 decks
39%synergy
Archivist of Oghma
36%inclusion10 decks28 decks
29%synergy
Hedron Crab
36%inclusion10 decks28 decks
35%synergy
Tataru Taru
33%inclusion4 decks12 decks
25%synergy
Lurrus of the Dream-Den
32%inclusion9 decks28 decks
31%synergy
Psychic Frog
25%inclusion7 decks28 decks
18%synergy
Ledger Shredder
25%inclusion7 decks28 decks
16%synergy
High Fae Trickster
23%inclusion5 decks22 decks
18%synergy
Snapcaster Mage
21%inclusion6 decks28 decks
19%synergy
Phyrexian Metamorph
21%inclusion6 decks28 decks
13%synergy
Talion, the Kindly Lord
21%inclusion6 decks28 decks
13%synergy
Ghostly Pilferer
21%inclusion6 decks28 decks
14%synergy
Leonin Relic-Warder
14%inclusion4 decks28 decks
14%synergy
Faerie Mastermind
14%inclusion4 decks28 decks
5%synergy
Symbiote Spider-Man
11%inclusion1 decks9 decks
11%synergy
Gilded Drake
11%inclusion3 decks28 decks
9%synergy
Pollywog Prodigy
11%inclusion3 decks28 decks
7%synergy
Dauthi Voidwalker
11%inclusion3 decks28 decks
5%synergy
Volatile Stormdrake
7.1%inclusion2 decks28 decks
6%synergy
Hoarding Broodlord
7.1%inclusion2 decks28 decks
5%synergy
Consecrated Sphinx
7.1%inclusion2 decks28 decks
1%synergy
Cephalid Illusionist
7.1%inclusion2 decks28 decks
7%synergy
Laboratory Maniac
7.1%inclusion2 decks28 decks
4%synergy
Nomads en-Kor
7.1%inclusion2 decks28 decks
7%synergy
Nezahal, Primal Tide
7.1%inclusion2 decks28 decks
3%synergy
Academy Rector
7.1%inclusion2 decks28 decks
6%synergy
Instants
Swan Song
86%inclusion24 decks28 decks
66%synergy
Mental Misstep
82%inclusion23 decks28 decks
75%synergy
Borne Upon a Wind
82%inclusion23 decks28 decks
77%synergy
Mystical Tutor
82%inclusion23 decks28 decks
71%synergy
Swords to Plowshares
75%inclusion21 decks28 decks
7%synergy
Fierce Guardianship
71%inclusion20 decks28 decks
51%synergy
Cabal Ritual
68%inclusion19 decks28 decks
64%synergy
Cyclonic Rift
54%inclusion15 decks28 decks
29%synergy
An Offer You Can't Refuse
43%inclusion12 decks28 decks
16%synergy
Chain of Vapor
39%inclusion11 decks28 decks
36%synergy
Mana Drain
39%inclusion11 decks28 decks
22%synergy
Gifts Ungiven
36%inclusion10 decks28 decks
33%synergy
Brain Freeze
29%inclusion8 decks28 decks
28%synergy
Darkblast
29%inclusion8 decks28 decks
28%synergy
Retraction Helix
25%inclusion7 decks28 decks
24%synergy
Into the Flood Maw
25%inclusion7 decks28 decks
21%synergy
Banishing Knack
18%inclusion5 decks28 decks
17%synergy
Ad Nauseam
18%inclusion5 decks28 decks
15%synergy
Path to Exile
18%inclusion5 decks28 decks
-24%synergy
Culling the Weak
14%inclusion4 decks28 decks
13%synergy
Strix Serenade
14%inclusion4 decks28 decks
11%synergy
Sink into Stupor
14%inclusion4 decks28 decks
2%synergy
Deadly Rollick
7.1%inclusion2 decks28 decks
-7%synergy
Sacrifice
7.1%inclusion2 decks28 decks
6%synergy
Muddle the Mixture
7.1%inclusion2 decks28 decks
3%synergy
Orim's Chant
7.1%inclusion2 decks28 decks
6%synergy
Lim-Dûl's Vault
7.1%inclusion2 decks28 decks
4%synergy
Dramatic Reversal
7.1%inclusion2 decks28 decks
5%synergy
Saw in Half
7.1%inclusion2 decks28 decks
5%synergy
Sorceries
Imperial Seal
86%inclusion24 decks28 decks
78%synergy
Reanimate
61%inclusion17 decks28 decks
45%synergy
Unmarked Grave
25%inclusion7 decks28 decks
24%synergy
Mnemonic Betrayal
21%inclusion6 decks28 decks
18%synergy
Toxic Deluge
21%inclusion6 decks28 decks
2%synergy
Cabal Therapy
18%inclusion5 decks28 decks
18%synergy
Diabolic Intent
18%inclusion5 decks28 decks
13%synergy
Lively Dirge
18%inclusion5 decks28 decks
17%synergy
Demonic Counsel
18%inclusion5 decks28 decks
17%synergy
Windfall
14%inclusion4 decks28 decks
1%synergy
Yawgmoth's Will
14%inclusion4 decks28 decks
13%synergy
Beseech the Mirror
14%inclusion4 decks28 decks
10%synergy
Singularity Rupture
11%inclusion1 decks9 decks
9%synergy
Space-Time Anomaly
11%inclusion1 decks9 decks
9%synergy
Timetwister
11%inclusion3 decks28 decks
10%synergy
Utility Artifacts
The One Ring
71%inclusion20 decks28 decks
58%synergy
Wishclaw Talisman
54%inclusion15 decks28 decks
45%synergy
Vexing Bauble
14%inclusion4 decks28 decks
12%synergy
Agatha's Soul Cauldron
11%inclusion3 decks28 decks
10%synergy
Mesmeric Orb
7.1%inclusion2 decks28 decks
6%synergy
Cursed Totem
7.1%inclusion2 decks28 decks
5%synergy
Altar of the Brood
7.1%inclusion2 decks28 decks
6%synergy
Isochron Scepter
7.1%inclusion2 decks28 decks
5%synergy
Enchantments
Amphibian Downpour
71%inclusion20 decks28 decks
67%synergy
Necropotence
64%inclusion18 decks28 decks
58%synergy
Tinybones Joins Up
61%inclusion17 decks28 decks
59%synergy
Blind Obedience
57%inclusion16 decks28 decks
45%synergy
The Meathook Massacre
43%inclusion12 decks28 decks
39%synergy
Founding the Third Path
39%inclusion11 decks28 decks
39%synergy
Mirrormade
39%inclusion11 decks28 decks
29%synergy
Counterbalance
36%inclusion10 decks28 decks
34%synergy
Ripples of Undeath
36%inclusion10 decks28 decks
33%synergy
Touch the Spirit Realm
36%inclusion10 decks28 decks
33%synergy
Copy Artifact
36%inclusion10 decks28 decks
35%synergy
Static Prison
36%inclusion10 decks28 decks
35%synergy
Steal Enchantment
32%inclusion9 decks28 decks
31%synergy
Chains of Mephistopheles
32%inclusion9 decks28 decks
32%synergy
Copy Enchantment
18%inclusion5 decks28 decks
13%synergy
Seal of Removal
18%inclusion5 decks28 decks
17%synergy
Seal of Cleansing
14%inclusion4 decks28 decks
13%synergy
Trouble in Pairs
14%inclusion4 decks28 decks
9%synergy
Power Artifact
11%inclusion3 decks28 decks
10%synergy
Chthonian Nightmare
11%inclusion3 decks28 decks
10%synergy
Aura of Silence
11%inclusion3 decks28 decks
7%synergy
Grasp of Fate
7.1%inclusion2 decks28 decks
1%synergy
Dance of Many
7.1%inclusion2 decks28 decks
7%synergy
Leyline of Anticipation
7.1%inclusion2 decks28 decks
3%synergy
Monologue Tax
7.1%inclusion2 decks28 decks
1%synergy
Teval's Judgment
6.7%inclusion1 decks15 decks
6%synergy
Planeswalkers
Teferi, Time Raveler
36%inclusion10 decks28 decks
27%synergy
Tezzeret, Cruel Captain
11%inclusion1 decks9 decks
9%synergy
Ashiok, Dream Render
7.1%inclusion2 decks28 decks
6%synergy
Utility Lands
Otawara, Soaring City
89%inclusion25 decks28 decks
70%synergy
Urza's Saga
39%inclusion11 decks28 decks
27%synergy
Emergence Zone
36%inclusion10 decks28 decks
34%synergy
Serra's Sanctum
32%inclusion9 decks28 decks
30%synergy
Minamo, School at Water's Edge
29%inclusion8 decks28 decks
25%synergy
City of Traitors
29%inclusion8 decks28 decks
27%synergy
Cephalid Coliseum
25%inclusion7 decks28 decks
21%synergy
Urborg, Tomb of Yawgmoth
14%inclusion4 decks28 decks
1%synergy
Hall of Heliod's Generosity
7.1%inclusion2 decks28 decks
-6%synergy
Takenuma, Abandoned Mire
7.1%inclusion2 decks28 decks
1%synergy
Mistrise Village
6.7%inclusion1 decks15 decks
3%synergy
Mana Artifacts
Arcane Signet
100%inclusion28 decks28 decks
12%synergy
Sol Ring
100%inclusion28 decks28 decks
10%synergy
Lotus Petal
96%inclusion27 decks28 decks
86%synergy
Mox Opal
89%inclusion25 decks28 decks
80%synergy
Talisman of Dominance
82%inclusion23 decks28 decks
33%synergy
Fellwar Stone
82%inclusion23 decks28 decks
48%synergy
Lion's Eye Diamond
82%inclusion23 decks28 decks
80%synergy
Grim Monolith
61%inclusion17 decks28 decks
57%synergy
Talisman of Progress
39%inclusion11 decks28 decks
-4%synergy
Mox Amber
39%inclusion11 decks28 decks
33%synergy
Talisman of Hierarchy
39%inclusion11 decks28 decks
-4%synergy
Basalt Monolith
7.1%inclusion2 decks28 decks
5%synergy
Lands
Tundra
100%inclusion28 decks28 decks
84%synergy
Command Tower
100%inclusion28 decks28 decks
7%synergy
Underground Sea
100%inclusion28 decks28 decks
84%synergy
Godless Shrine
100%inclusion28 decks28 decks
49%synergy
Scrubland
100%inclusion28 decks28 decks
84%synergy
Marsh Flats
100%inclusion28 decks28 decks
64%synergy
Polluted Delta
100%inclusion28 decks28 decks
62%synergy
Hallowed Fountain
100%inclusion28 decks28 decks
51%synergy
Flooded Strand
100%inclusion28 decks28 decks
62%synergy
Watery Grave
100%inclusion28 decks28 decks
50%synergy
Gemstone Caverns
96%inclusion27 decks28 decks
89%synergy
City of Brass
96%inclusion27 decks28 decks
81%synergy
Mana Confluence
93%inclusion26 decks28 decks
79%synergy
Misty Rainforest
89%inclusion25 decks28 decks
78%synergy
Verdant Catacombs
89%inclusion25 decks28 decks
79%synergy
Scalding Tarn
86%inclusion24 decks28 decks
75%synergy
Bloodstained Mire
86%inclusion24 decks28 decks
75%synergy
Windswept Heath
82%inclusion23 decks28 decks
72%synergy
Arid Mesa
82%inclusion23 decks28 decks
72%synergy
Exotic Orchard
68%inclusion19 decks28 decks
9%synergy
Undercity Sewers
57%inclusion16 decks28 decks
43%synergy
Morphic Pool
57%inclusion16 decks28 decks
23%synergy
Island
50%inclusion14 decks28 decks
-43%synergy
Sea of Clouds
39%inclusion11 decks28 decks
4%synergy
Swamp
36%inclusion10 decks28 decks
-56%synergy
Cavern of Souls
32%inclusion9 decks28 decks
25%synergy
Vault of Champions
25%inclusion7 decks28 decks
-8%synergy
Starting Town
25%inclusion3 decks12 decks
21%synergy
Meticulous Archive
18%inclusion5 decks28 decks
4%synergy
Plains
14%inclusion4 decks28 decks
-77%synergy
Sink into Stupor
14%inclusion4 decks28 decks
2%synergy
Forbidden Orchard
11%inclusion3 decks28 decks
8%synergy
Gemstone Mine
7.1%inclusion2 decks28 decks
7%synergy
Shadowy Backstreet
7.1%inclusion2 decks28 decks
-5%synergy
Spire of Industry
7.1%inclusion2 decks28 decks
-1%synergy
Talon Gates of Madara
7.1%inclusion2 decks28 decks
6%synergy
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