The Master of Keys (Commander) - Expensive cEDH

The Master of Keys
Rank #316
55decks
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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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Enchantments
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Utility Lands
Mana Artifacts
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Wan Shi Tong, Librarian
60%inclusion3 decks5 decks
56%synergy
High Synergy Cards
Abdel Adrian, Gorion's Ward
95%inclusion52 decks55 decks
93%synergy
Necromancy
95%inclusion52 decks55 decks
90%synergy
Entomb
96%inclusion53 decks55 decks
89%synergy
Intuition
91%inclusion50 decks55 decks
89%synergy
Animate Dead
96%inclusion53 decks55 decks
87%synergy
Tainted Pact
93%inclusion51 decks55 decks
85%synergy
Dance of the Dead
87%inclusion48 decks55 decks
85%synergy
Dress Down
85%inclusion47 decks55 decks
83%synergy
Mindbreak Trap
89%inclusion49 decks55 decks
82%synergy
Mental Misstep
87%inclusion48 decks55 decks
80%synergy
Top Cards
Esper Sentinel
100%inclusion55 decks55 decks
72%synergy
Mystic Remora
100%inclusion55 decks55 decks
78%synergy
Dark Ritual
96%inclusion53 decks55 decks
77%synergy
Smothering Tithe
95%inclusion52 decks55 decks
62%synergy
Swan Song
95%inclusion52 decks55 decks
75%synergy
Force of Negation
91%inclusion50 decks55 decks
79%synergy
Orcish Bowmasters
89%inclusion49 decks55 decks
78%synergy
Flusterstorm
87%inclusion48 decks55 decks
79%synergy
Silence
87%inclusion48 decks55 decks
77%synergy
Imperial Seal
84%inclusion46 decks55 decks
76%synergy
Game Changers
Mana Vault
100%inclusion55 decks55 decks
90%synergy
Force of Will
100%inclusion55 decks55 decks
87%synergy
Ancient Tomb
98%inclusion54 decks55 decks
85%synergy
Rhystic Study
98%inclusion54 decks55 decks
65%synergy
Demonic Tutor
98%inclusion54 decks55 decks
76%synergy
Enlightened Tutor
98%inclusion54 decks55 decks
78%synergy
Vampiric Tutor
98%inclusion54 decks55 decks
80%synergy
Chrome Mox
98%inclusion54 decks55 decks
88%synergy
Mox Diamond
98%inclusion54 decks55 decks
91%synergy
Thassa's Oracle
96%inclusion53 decks55 decks
86%synergy
Creatures
Ranger-Captain of Eos
82%inclusion45 decks55 decks
75%synergy
Grand Abolisher
82%inclusion45 decks55 decks
67%synergy
Lotho, Corrupt Shirriff
80%inclusion44 decks55 decks
63%synergy
Valley Floodcaller
73%inclusion40 decks55 decks
68%synergy
Voice of Victory
56%inclusion20 decks36 decks
47%synergy
Displacer Kitten
55%inclusion30 decks55 decks
47%synergy
Opposition Agent
51%inclusion28 decks55 decks
42%synergy
Auriok Salvagers
51%inclusion28 decks55 decks
51%synergy
Mockingbird
49%inclusion27 decks55 decks
45%synergy
Archivist of Oghma
45%inclusion25 decks55 decks
39%synergy
Lurrus of the Dream-Den
45%inclusion25 decks55 decks
44%synergy
Ledger Shredder
38%inclusion21 decks55 decks
29%synergy
Drannith Magistrate
36%inclusion20 decks55 decks
28%synergy
Hullbreaker Horror
36%inclusion20 decks55 decks
30%synergy
Hedron Crab
25%inclusion14 decks55 decks
25%synergy
Ghostly Pilferer
24%inclusion13 decks55 decks
17%synergy
Faerie Mastermind
24%inclusion13 decks55 decks
14%synergy
Tataru Taru
21%inclusion6 decks29 decks
12%synergy
Phyrexian Metamorph
20%inclusion11 decks55 decks
11%synergy
Psychic Frog
16%inclusion9 decks55 decks
10%synergy
Talion, the Kindly Lord
16%inclusion9 decks55 decks
8%synergy
High Fae Trickster
15%inclusion8 decks53 decks
10%synergy
Pollywog Prodigy
13%inclusion7 decks55 decks
8%synergy
Overlord of the Balemurk
11%inclusion6 decks55 decks
9%synergy
Emet-Selch of the Third Seat
10%inclusion3 decks29 decks
0%synergy
Malevolent Hermit
9.1%inclusion5 decks55 decks
8%synergy
Snapcaster Mage
9.1%inclusion5 decks55 decks
7%synergy
Gilded Drake
9.1%inclusion5 decks55 decks
7%synergy
Scrabbling Skullcrab
7.3%inclusion4 decks55 decks
6%synergy
Hoarding Broodlord
7.3%inclusion4 decks55 decks
5%synergy
Leonin Relic-Warder
7.3%inclusion4 decks55 decks
7%synergy
Doom Whisperer
7.3%inclusion4 decks55 decks
6%synergy
Dauthi Voidwalker
7.3%inclusion4 decks55 decks
1%synergy
Symbiote Spider-Man
6.3%inclusion1 decks16 decks
6%synergy
Volatile Stormdrake
5.5%inclusion3 decks55 decks
4%synergy
Stitcher's Supplier
5.5%inclusion3 decks55 decks
5%synergy
Zur the Enchanter
5.5%inclusion3 decks55 decks
0%synergy
Instants
Pact of Negation
78%inclusion43 decks55 decks
70%synergy
Demonic Consultation
78%inclusion43 decks55 decks
70%synergy
Fierce Guardianship
73%inclusion40 decks55 decks
52%synergy
Swords to Plowshares
71%inclusion39 decks55 decks
3%synergy
Borne Upon a Wind
67%inclusion37 decks55 decks
63%synergy
Cabal Ritual
58%inclusion32 decks55 decks
55%synergy
Mystical Tutor
56%inclusion31 decks55 decks
45%synergy
Cyclonic Rift
55%inclusion30 decks55 decks
30%synergy
Gifts Ungiven
49%inclusion27 decks55 decks
47%synergy
An Offer You Can't Refuse
42%inclusion23 decks55 decks
15%synergy
Mana Drain
42%inclusion23 decks55 decks
24%synergy
Into the Flood Maw
36%inclusion20 decks55 decks
33%synergy
Darkblast
33%inclusion18 decks55 decks
33%synergy
Sink into Stupor
27%inclusion15 decks55 decks
15%synergy
Chain of Vapor
25%inclusion14 decks55 decks
22%synergy
Retraction Helix
22%inclusion12 decks55 decks
21%synergy
Brain Freeze
18%inclusion10 decks55 decks
18%synergy
Ad Nauseam
16%inclusion9 decks55 decks
14%synergy
Culling the Weak
15%inclusion8 decks55 decks
13%synergy
Banishing Knack
15%inclusion8 decks55 decks
14%synergy
Deadly Rollick
11%inclusion6 decks55 decks
-3%synergy
Path to Exile
11%inclusion6 decks55 decks
-31%synergy
Dispel
9.1%inclusion5 decks55 decks
5%synergy
Spell Pierce
9.1%inclusion5 decks55 decks
6%synergy
Muddle the Mixture
7.3%inclusion4 decks55 decks
3%synergy
Lim-Dûl's Vault
7.3%inclusion4 decks55 decks
4%synergy
Strix Serenade
7.3%inclusion4 decks55 decks
3%synergy
Sacrifice
5.5%inclusion3 decks55 decks
5%synergy
Flare of Denial
5.5%inclusion3 decks55 decks
3%synergy
Miscast
5.5%inclusion3 decks55 decks
4%synergy
Saw in Half
5.5%inclusion3 decks55 decks
3%synergy
Sorceries
Sevinne's Reclamation
75%inclusion41 decks55 decks
66%synergy
Lively Dirge
35%inclusion19 decks55 decks
33%synergy
Reanimate
31%inclusion17 decks55 decks
15%synergy
Windfall
29%inclusion16 decks55 decks
15%synergy
Beseech the Mirror
27%inclusion15 decks55 decks
23%synergy
Toxic Deluge
24%inclusion13 decks55 decks
4%synergy
Demonic Counsel
18%inclusion10 decks55 decks
17%synergy
Timetwister
13%inclusion7 decks55 decks
12%synergy
Yawgmoth's Will
11%inclusion6 decks55 decks
10%synergy
Diabolic Intent
9.1%inclusion5 decks55 decks
4%synergy
Unmarked Grave
7.3%inclusion4 decks55 decks
6%synergy
Transmute Artifact
7.3%inclusion4 decks55 decks
6%synergy
Space-Time Anomaly
5.6%inclusion1 decks18 decks
4%synergy
Cabal Therapy
5.5%inclusion3 decks55 decks
5%synergy
Gitaxian Probe
5.5%inclusion3 decks55 decks
3%synergy
Praetor's Grasp
5.5%inclusion3 decks55 decks
2%synergy
Mnemonic Betrayal
5.5%inclusion3 decks55 decks
2%synergy
Utility Artifacts
The One Ring
75%inclusion41 decks55 decks
61%synergy
Wishclaw Talisman
62%inclusion34 decks55 decks
53%synergy
Vexing Bauble
16%inclusion9 decks55 decks
15%synergy
Mesmeric Orb
11%inclusion6 decks55 decks
10%synergy
Altar of the Brood
7.3%inclusion4 decks55 decks
6%synergy
Sensei's Divining Top
5.5%inclusion3 decks55 decks
-5%synergy
Cursed Totem
5.5%inclusion3 decks55 decks
3%synergy
Enchantments
Tinybones Joins Up
78%inclusion43 decks55 decks
77%synergy
Chains of Mephistopheles
71%inclusion39 decks55 decks
71%synergy
Amphibian Downpour
62%inclusion34 decks55 decks
57%synergy
Copy Artifact
60%inclusion33 decks55 decks
59%synergy
The Meathook Massacre
58%inclusion32 decks55 decks
55%synergy
Ripples of Undeath
53%inclusion29 decks55 decks
50%synergy
Necropotence
53%inclusion29 decks55 decks
46%synergy
Blind Obedience
51%inclusion28 decks55 decks
38%synergy
Mirrormade
49%inclusion27 decks55 decks
39%synergy
Static Prison
49%inclusion27 decks55 decks
49%synergy
Touch the Spirit Realm
42%inclusion23 decks55 decks
39%synergy
Steal Enchantment
42%inclusion23 decks55 decks
41%synergy
Counterbalance
31%inclusion17 decks55 decks
29%synergy
Founding the Third Path
27%inclusion15 decks55 decks
27%synergy
Trouble in Pairs
22%inclusion12 decks55 decks
16%synergy
Copy Enchantment
15%inclusion8 decks55 decks
10%synergy
Monologue Tax
13%inclusion7 decks55 decks
7%synergy
Charitable Levy
11%inclusion6 decks55 decks
11%synergy
Aura of Silence
11%inclusion6 decks55 decks
8%synergy
Leyline of Anticipation
9.1%inclusion5 decks55 decks
5%synergy
Power Artifact
9.1%inclusion5 decks55 decks
9%synergy
Teval's Judgment
8.3%inclusion3 decks36 decks
7%synergy
Seal of Cleansing
7.3%inclusion4 decks55 decks
6%synergy
Stillness in Motion
5.7%inclusion2 decks35 decks
5%synergy
Dance of Many
5.5%inclusion3 decks55 decks
5%synergy
Second Chance
5.5%inclusion3 decks55 decks
5%synergy
Mind Harness
5.5%inclusion3 decks55 decks
5%synergy
Seal of Removal
5.5%inclusion3 decks55 decks
5%synergy
Planeswalkers
Teferi, Time Raveler
49%inclusion27 decks55 decks
41%synergy
Tezzeret, Cruel Captain
13%inclusion3 decks23 decks
11%synergy
Utility Lands
Otawara, Soaring City
91%inclusion50 decks55 decks
72%synergy
Urza's Saga
38%inclusion21 decks55 decks
26%synergy
Cephalid Coliseum
35%inclusion19 decks55 decks
31%synergy
Emergence Zone
31%inclusion17 decks55 decks
29%synergy
City of Traitors
31%inclusion17 decks55 decks
30%synergy
Minamo, School at Water's Edge
29%inclusion16 decks55 decks
25%synergy
Serra's Sanctum
24%inclusion13 decks55 decks
22%synergy
Takenuma, Abandoned Mire
11%inclusion6 decks55 decks
4%synergy
Urborg, Tomb of Yawgmoth
11%inclusion6 decks55 decks
-2%synergy
Bazaar of Baghdad
9.1%inclusion5 decks55 decks
9%synergy
Hall of Heliod's Generosity
7.3%inclusion4 decks55 decks
-6%synergy
Mana Artifacts
Sol Ring
100%inclusion55 decks55 decks
10%synergy
Arcane Signet
96%inclusion53 decks55 decks
9%synergy
Lotus Petal
96%inclusion53 decks55 decks
85%synergy
Lion's Eye Diamond
91%inclusion50 decks55 decks
89%synergy
Mox Opal
84%inclusion46 decks55 decks
75%synergy
Talisman of Dominance
76%inclusion42 decks55 decks
27%synergy
Fellwar Stone
69%inclusion38 decks55 decks
35%synergy
Grim Monolith
51%inclusion28 decks55 decks
47%synergy
Talisman of Progress
44%inclusion24 decks55 decks
1%synergy
Mox Amber
35%inclusion19 decks55 decks
28%synergy
Talisman of Hierarchy
24%inclusion13 decks55 decks
-19%synergy
Basalt Monolith
13%inclusion7 decks55 decks
10%synergy
Dimir Signet
5.5%inclusion3 decks55 decks
-28%synergy
Lands
Tundra
100%inclusion55 decks55 decks
84%synergy
Underground Sea
100%inclusion55 decks55 decks
84%synergy
Polluted Delta
100%inclusion55 decks55 decks
63%synergy
Flooded Strand
100%inclusion55 decks55 decks
62%synergy
Marsh Flats
100%inclusion55 decks55 decks
64%synergy
Command Tower
98%inclusion54 decks55 decks
6%synergy
Scrubland
98%inclusion54 decks55 decks
82%synergy
Hallowed Fountain
98%inclusion54 decks55 decks
49%synergy
Watery Grave
98%inclusion54 decks55 decks
49%synergy
Godless Shrine
95%inclusion52 decks55 decks
45%synergy
Gemstone Caverns
93%inclusion51 decks55 decks
85%synergy
Mana Confluence
91%inclusion50 decks55 decks
77%synergy
City of Brass
91%inclusion50 decks55 decks
76%synergy
Misty Rainforest
87%inclusion48 decks55 decks
76%synergy
Verdant Catacombs
80%inclusion44 decks55 decks
70%synergy
Bloodstained Mire
78%inclusion43 decks55 decks
67%synergy
Scalding Tarn
76%inclusion42 decks55 decks
65%synergy
Windswept Heath
71%inclusion39 decks55 decks
61%synergy
Morphic Pool
65%inclusion36 decks55 decks
31%synergy
Exotic Orchard
62%inclusion34 decks55 decks
3%synergy
Arid Mesa
62%inclusion34 decks55 decks
52%synergy
Undercity Sewers
53%inclusion29 decks55 decks
39%synergy
Sea of Clouds
42%inclusion23 decks55 decks
6%synergy
Vault of Champions
40%inclusion22 decks55 decks
7%synergy
Island
36%inclusion20 decks55 decks
-56%synergy
Swamp
33%inclusion18 decks55 decks
-58%synergy
Sink into Stupor
27%inclusion15 decks55 decks
15%synergy
Starting Town
24%inclusion7 decks29 decks
20%synergy
Shadowy Backstreet
24%inclusion13 decks55 decks
11%synergy
Meticulous Archive
24%inclusion13 decks55 decks
10%synergy
Plains
20%inclusion11 decks55 decks
-71%synergy
Cavern of Souls
20%inclusion11 decks55 decks
13%synergy
Spire of Industry
13%inclusion7 decks55 decks
4%synergy
Talon Gates of Madara
11%inclusion6 decks55 decks
10%synergy
Underground River
11%inclusion6 decks55 decks
-21%synergy
Raffine's Tower
9.1%inclusion5 decks55 decks
-32%synergy
Forbidden Orchard
9.1%inclusion5 decks55 decks
6%synergy
Floodfarm Verge
9.1%inclusion5 decks55 decks
-2%synergy
Gloomlake Verge
7.3%inclusion4 decks55 decks
-4%synergy
Caves of Koilos
5.5%inclusion3 decks55 decks
-30%synergy
Silent Clearing
5.5%inclusion3 decks55 decks
3%synergy
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