The Master of Keys (Commander) - Expensive cEDH

The Master of Keys
Rank #302
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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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Does Machines
10%inclusion1 decks10 decks
10%synergy
High Synergy Cards
Intuition
95%inclusion56 decks59 decks
93%synergy
Abdel Adrian, Gorion's Ward
93%inclusion55 decks59 decks
92%synergy
Necromancy
95%inclusion56 decks59 decks
90%synergy
Entomb
97%inclusion57 decks59 decks
90%synergy
Dance of the Dead
90%inclusion53 decks59 decks
88%synergy
Animate Dead
97%inclusion57 decks59 decks
87%synergy
Dress Down
86%inclusion51 decks59 decks
84%synergy
Thassa's Oracle
93%inclusion55 decks59 decks
84%synergy
Mindbreak Trap
90%inclusion53 decks59 decks
83%synergy
Tainted Pact
90%inclusion53 decks59 decks
83%synergy
Top Cards
Mystic Remora
100%inclusion59 decks59 decks
79%synergy
Esper Sentinel
100%inclusion59 decks59 decks
73%synergy
Dark Ritual
97%inclusion57 decks59 decks
77%synergy
Swan Song
90%inclusion53 decks59 decks
70%synergy
Silence
88%inclusion52 decks59 decks
78%synergy
Mental Misstep
88%inclusion52 decks59 decks
82%synergy
Force of Negation
88%inclusion52 decks59 decks
76%synergy
Orcish Bowmasters
88%inclusion52 decks59 decks
78%synergy
Imperial Seal
85%inclusion50 decks59 decks
78%synergy
Flusterstorm
83%inclusion49 decks59 decks
75%synergy
Game Changers
Force of Will
100%inclusion59 decks59 decks
88%synergy
Mana Vault
100%inclusion59 decks59 decks
91%synergy
Ancient Tomb
98%inclusion58 decks59 decks
86%synergy
Enlightened Tutor
98%inclusion58 decks59 decks
79%synergy
Vampiric Tutor
98%inclusion58 decks59 decks
81%synergy
Mox Diamond
98%inclusion58 decks59 decks
91%synergy
Rhystic Study
98%inclusion58 decks59 decks
67%synergy
Demonic Tutor
98%inclusion58 decks59 decks
78%synergy
Chrome Mox
98%inclusion58 decks59 decks
89%synergy
Smothering Tithe
95%inclusion56 decks59 decks
64%synergy
Creatures
Grand Abolisher
81%inclusion48 decks59 decks
67%synergy
Lotho, Corrupt Shirriff
81%inclusion48 decks59 decks
65%synergy
Ranger-Captain of Eos
80%inclusion47 decks59 decks
73%synergy
Valley Floodcaller
73%inclusion43 decks59 decks
69%synergy
Voice of Victory
62%inclusion26 decks42 decks
54%synergy
Opposition Agent
54%inclusion32 decks59 decks
46%synergy
Wan Shi Tong, Librarian
53%inclusion8 decks15 decks
48%synergy
Displacer Kitten
49%inclusion29 decks59 decks
42%synergy
Auriok Salvagers
49%inclusion29 decks59 decks
49%synergy
Mockingbird
46%inclusion27 decks59 decks
41%synergy
Archivist of Oghma
42%inclusion25 decks59 decks
36%synergy
Hullbreaker Horror
41%inclusion24 decks59 decks
35%synergy
Lurrus of the Dream-Den
37%inclusion22 decks59 decks
36%synergy
Drannith Magistrate
36%inclusion21 decks59 decks
28%synergy
Ledger Shredder
34%inclusion20 decks59 decks
25%synergy
Tataru Taru
31%inclusion11 decks36 decks
22%synergy
Hedron Crab
27%inclusion16 decks59 decks
26%synergy
Faerie Mastermind
27%inclusion16 decks59 decks
18%synergy
Ghostly Pilferer
22%inclusion13 decks59 decks
15%synergy
Talion, the Kindly Lord
19%inclusion11 decks59 decks
11%synergy
Psychic Frog
19%inclusion11 decks59 decks
12%synergy
Phyrexian Metamorph
17%inclusion10 decks59 decks
9%synergy
High Fae Trickster
14%inclusion8 decks58 decks
9%synergy
Pollywog Prodigy
14%inclusion8 decks59 decks
10%synergy
Snapcaster Mage
10%inclusion6 decks59 decks
8%synergy
Gilded Drake
10%inclusion6 decks59 decks
9%synergy
Voracious Tome-Skimmer
9.1%inclusion1 decks11 decks
8%synergy
Malevolent Hermit
8.5%inclusion5 decks59 decks
8%synergy
Emet-Selch of the Third Seat
8.3%inclusion3 decks36 decks
-1%synergy
Dauthi Voidwalker
6.8%inclusion4 decks59 decks
1%synergy
Doom Whisperer
6.8%inclusion4 decks59 decks
5%synergy
Leonin Relic-Warder
6.8%inclusion4 decks59 decks
7%synergy
Gran-Gran
6.7%inclusion1 decks15 decks
7%synergy
Volatile Stormdrake
5.1%inclusion3 decks59 decks
4%synergy
Scrabbling Skullcrab
5.1%inclusion3 decks59 decks
4%synergy
Hoarding Broodlord
5.1%inclusion3 decks59 decks
3%synergy
Gravebreaker Lamia
5.1%inclusion3 decks59 decks
4%synergy
Zur the Enchanter
5.1%inclusion3 decks59 decks
0%synergy
Instants
Demonic Consultation
76%inclusion45 decks59 decks
68%synergy
Pact of Negation
76%inclusion45 decks59 decks
69%synergy
Fierce Guardianship
75%inclusion44 decks59 decks
54%synergy
Borne Upon a Wind
71%inclusion42 decks59 decks
66%synergy
Swords to Plowshares
63%inclusion37 decks59 decks
-5%synergy
Mystical Tutor
61%inclusion36 decks59 decks
50%synergy
Cabal Ritual
61%inclusion36 decks59 decks
58%synergy
Gifts Ungiven
53%inclusion31 decks59 decks
50%synergy
Cyclonic Rift
49%inclusion29 decks59 decks
26%synergy
An Offer You Can't Refuse
44%inclusion26 decks59 decks
17%synergy
Mana Drain
37%inclusion22 decks59 decks
20%synergy
Into the Flood Maw
34%inclusion20 decks59 decks
30%synergy
Darkblast
31%inclusion18 decks59 decks
30%synergy
Sink into Stupor
27%inclusion16 decks59 decks
14%synergy
Chain of Vapor
25%inclusion15 decks59 decks
22%synergy
Retraction Helix
22%inclusion13 decks59 decks
21%synergy
Brain Freeze
19%inclusion11 decks59 decks
18%synergy
Culling the Weak
17%inclusion10 decks59 decks
15%synergy
Ad Nauseam
17%inclusion10 decks59 decks
15%synergy
Deadly Rollick
12%inclusion7 decks59 decks
-3%synergy
Banishing Knack
12%inclusion7 decks59 decks
12%synergy
Path to Exile
12%inclusion7 decks59 decks
-30%synergy
Dispel
10%inclusion6 decks59 decks
7%synergy
Orim's Chant
8.5%inclusion5 decks59 decks
7%synergy
Muddle the Mixture
6.8%inclusion4 decks59 decks
3%synergy
Lim-Dûl's Vault
6.8%inclusion4 decks59 decks
4%synergy
Sacrifice
5.1%inclusion3 decks59 decks
4%synergy
Spell Pierce
5.1%inclusion3 decks59 decks
3%synergy
Miscast
5.1%inclusion3 decks59 decks
4%synergy
Rain of Filth
5.1%inclusion3 decks59 decks
5%synergy
Saw in Half
5.1%inclusion3 decks59 decks
3%synergy
Sorceries
Sevinne's Reclamation
76%inclusion45 decks59 decks
67%synergy
Lively Dirge
32%inclusion19 decks59 decks
31%synergy
Reanimate
32%inclusion19 decks59 decks
16%synergy
Beseech the Mirror
32%inclusion19 decks59 decks
28%synergy
Windfall
31%inclusion18 decks59 decks
17%synergy
Toxic Deluge
24%inclusion14 decks59 decks
4%synergy
Demonic Counsel
15%inclusion9 decks59 decks
14%synergy
Flash Photography
13%inclusion2 decks15 decks
12%synergy
Cabal Therapy
12%inclusion7 decks59 decks
12%synergy
Timetwister
12%inclusion7 decks59 decks
11%synergy
Mnemonic Betrayal
10%inclusion6 decks59 decks
7%synergy
Yawgmoth's Will
10%inclusion6 decks59 decks
9%synergy
Praetor's Grasp
8.5%inclusion5 decks59 decks
6%synergy
Diabolic Intent
8.5%inclusion5 decks59 decks
4%synergy
Unmarked Grave
6.8%inclusion4 decks59 decks
5%synergy
Transmute Artifact
6.8%inclusion4 decks59 decks
5%synergy
Gitaxian Probe
5.1%inclusion3 decks59 decks
3%synergy
Utility Artifacts
The One Ring
73%inclusion43 decks59 decks
60%synergy
Wishclaw Talisman
59%inclusion35 decks59 decks
51%synergy
Vexing Bauble
14%inclusion8 decks59 decks
12%synergy
Mesmeric Orb
8.5%inclusion5 decks59 decks
7%synergy
Sensei's Divining Top
5.1%inclusion3 decks59 decks
-4%synergy
Cursed Totem
5.1%inclusion3 decks59 decks
3%synergy
Altar of the Brood
5.1%inclusion3 decks59 decks
4%synergy
Enchantments
Tinybones Joins Up
78%inclusion46 decks59 decks
77%synergy
Chains of Mephistopheles
68%inclusion40 decks59 decks
68%synergy
Necropotence
63%inclusion37 decks59 decks
56%synergy
Amphibian Downpour
61%inclusion36 decks59 decks
56%synergy
Copy Artifact
58%inclusion34 decks59 decks
57%synergy
The Meathook Massacre
54%inclusion32 decks59 decks
51%synergy
Mirrormade
54%inclusion32 decks59 decks
44%synergy
Blind Obedience
49%inclusion29 decks59 decks
37%synergy
Ripples of Undeath
47%inclusion28 decks59 decks
45%synergy
Static Prison
46%inclusion27 decks59 decks
45%synergy
Touch the Spirit Realm
44%inclusion26 decks59 decks
42%synergy
Steal Enchantment
44%inclusion26 decks59 decks
43%synergy
Counterbalance
29%inclusion17 decks59 decks
27%synergy
Founding the Third Path
27%inclusion16 decks59 decks
27%synergy
Trouble in Pairs
24%inclusion14 decks59 decks
18%synergy
Copy Enchantment
20%inclusion12 decks59 decks
16%synergy
Mornsong Aria
18%inclusion2 decks11 decks
17%synergy
Leyline of Anticipation
14%inclusion8 decks59 decks
9%synergy
Monologue Tax
14%inclusion8 decks59 decks
7%synergy
Aura of Silence
12%inclusion7 decks59 decks
9%synergy
Charitable Levy
10%inclusion6 decks59 decks
10%synergy
Power Artifact
8.5%inclusion5 decks59 decks
8%synergy
Seal of Cleansing
8.5%inclusion5 decks59 decks
7%synergy
Stillness in Motion
7.5%inclusion3 decks40 decks
7%synergy
Teval's Judgment
7.1%inclusion3 decks42 decks
6%synergy
Dance of Many
5.1%inclusion3 decks59 decks
5%synergy
Seal of Removal
5.1%inclusion3 decks59 decks
4%synergy
Second Chance
5.1%inclusion3 decks59 decks
5%synergy
Planeswalkers
Teferi, Time Raveler
46%inclusion27 decks59 decks
38%synergy
Tezzeret, Cruel Captain
6.9%inclusion2 decks29 decks
5%synergy
Utility Lands
Otawara, Soaring City
90%inclusion53 decks59 decks
71%synergy
Urza's Saga
37%inclusion22 decks59 decks
26%synergy
City of Traitors
37%inclusion22 decks59 decks
36%synergy
Emergence Zone
34%inclusion20 decks59 decks
32%synergy
Cephalid Coliseum
32%inclusion19 decks59 decks
29%synergy
Minamo, School at Water's Edge
32%inclusion19 decks59 decks
28%synergy
Serra's Sanctum
27%inclusion16 decks59 decks
25%synergy
Urborg, Tomb of Yawgmoth
14%inclusion8 decks59 decks
0%synergy
Takenuma, Abandoned Mire
12%inclusion7 decks59 decks
5%synergy
Bazaar of Baghdad
10%inclusion6 decks59 decks
10%synergy
Hall of Heliod's Generosity
8.5%inclusion5 decks59 decks
-5%synergy
Phyrexian Tower
6.8%inclusion4 decks59 decks
3%synergy
Mana Artifacts
Sol Ring
100%inclusion59 decks59 decks
10%synergy
Lotus Petal
97%inclusion57 decks59 decks
86%synergy
Arcane Signet
97%inclusion57 decks59 decks
9%synergy
Lion's Eye Diamond
90%inclusion53 decks59 decks
88%synergy
Mox Opal
83%inclusion49 decks59 decks
75%synergy
Talisman of Dominance
75%inclusion44 decks59 decks
25%synergy
Fellwar Stone
69%inclusion41 decks59 decks
36%synergy
Grim Monolith
54%inclusion32 decks59 decks
51%synergy
Talisman of Progress
42%inclusion25 decks59 decks
-1%synergy
Mox Amber
39%inclusion23 decks59 decks
33%synergy
Talisman of Hierarchy
27%inclusion16 decks59 decks
-17%synergy
Basalt Monolith
10%inclusion6 decks59 decks
8%synergy
Dimir Signet
5.1%inclusion3 decks59 decks
-26%synergy
Springleaf Drum
5.1%inclusion3 decks59 decks
3%synergy
Azorius Signet
5.1%inclusion3 decks59 decks
-26%synergy
Lands
Tundra
100%inclusion59 decks59 decks
84%synergy
Underground Sea
100%inclusion59 decks59 decks
84%synergy
Polluted Delta
100%inclusion59 decks59 decks
62%synergy
Scrubland
100%inclusion59 decks59 decks
84%synergy
Flooded Strand
100%inclusion59 decks59 decks
62%synergy
Marsh Flats
100%inclusion59 decks59 decks
64%synergy
Command Tower
98%inclusion58 decks59 decks
6%synergy
Hallowed Fountain
97%inclusion57 decks59 decks
46%synergy
Watery Grave
97%inclusion57 decks59 decks
46%synergy
Gemstone Caverns
93%inclusion55 decks59 decks
86%synergy
Mana Confluence
92%inclusion54 decks59 decks
78%synergy
Godless Shrine
92%inclusion54 decks59 decks
40%synergy
City of Brass
90%inclusion53 decks59 decks
75%synergy
Misty Rainforest
86%inclusion51 decks59 decks
76%synergy
Verdant Catacombs
80%inclusion47 decks59 decks
70%synergy
Bloodstained Mire
76%inclusion45 decks59 decks
66%synergy
Scalding Tarn
76%inclusion45 decks59 decks
65%synergy
Windswept Heath
66%inclusion39 decks59 decks
57%synergy
Morphic Pool
63%inclusion37 decks59 decks
29%synergy
Arid Mesa
59%inclusion35 decks59 decks
50%synergy
Exotic Orchard
56%inclusion33 decks59 decks
-3%synergy
Undercity Sewers
49%inclusion29 decks59 decks
35%synergy
Sea of Clouds
44%inclusion26 decks59 decks
9%synergy
Vault of Champions
39%inclusion23 decks59 decks
7%synergy
Starting Town
33%inclusion12 decks36 decks
29%synergy
Island
32%inclusion19 decks59 decks
-61%synergy
Sink into Stupor
27%inclusion16 decks59 decks
14%synergy
Swamp
27%inclusion16 decks59 decks
-65%synergy
Shadowy Backstreet
25%inclusion15 decks59 decks
13%synergy
Meticulous Archive
22%inclusion13 decks59 decks
8%synergy
Cavern of Souls
20%inclusion12 decks59 decks
14%synergy
Plains
19%inclusion11 decks59 decks
-73%synergy
Forbidden Orchard
14%inclusion8 decks59 decks
11%synergy
Spire of Industry
12%inclusion7 decks59 decks
4%synergy
Talon Gates of Madara
10%inclusion6 decks59 decks
9%synergy
Tarnished Citadel
8.5%inclusion5 decks59 decks
8%synergy
Raffine's Tower
8.5%inclusion5 decks59 decks
-32%synergy
Gloomlake Verge
8.5%inclusion5 decks59 decks
-3%synergy
Floodfarm Verge
8.5%inclusion5 decks59 decks
-3%synergy
Underground River
6.8%inclusion4 decks59 decks
-27%synergy
Caves of Koilos
5.1%inclusion3 decks59 decks
-30%synergy
Silent Clearing
5.1%inclusion3 decks59 decks
3%synergy
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