The Master of Keys (Commander) - Expensive cEDH

The Master of Keys
Rank #306
58decks
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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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Mornsong Aria
33%inclusion3 decks9 decks
33%synergy
Dream Beavers
25%inclusion1 decks4 decks
25%synergy
Voracious Tome-Skimmer
11%inclusion1 decks9 decks
10%synergy
High Synergy Cards
Intuition
93%inclusion54 decks58 decks
91%synergy
Necromancy
95%inclusion55 decks58 decks
90%synergy
Abdel Adrian, Gorion's Ward
91%inclusion53 decks58 decks
90%synergy
Entomb
95%inclusion55 decks58 decks
88%synergy
Dance of the Dead
88%inclusion51 decks58 decks
86%synergy
Thassa's Oracle
95%inclusion55 decks58 decks
85%synergy
Animate Dead
95%inclusion55 decks58 decks
85%synergy
Tainted Pact
91%inclusion53 decks58 decks
84%synergy
Mindbreak Trap
90%inclusion52 decks58 decks
83%synergy
Dress Down
84%inclusion49 decks58 decks
82%synergy
Top Cards
Esper Sentinel
100%inclusion58 decks58 decks
72%synergy
Mystic Remora
100%inclusion58 decks58 decks
79%synergy
Dark Ritual
97%inclusion56 decks58 decks
77%synergy
Swan Song
90%inclusion52 decks58 decks
70%synergy
Mental Misstep
88%inclusion51 decks58 decks
81%synergy
Silence
88%inclusion51 decks58 decks
78%synergy
Force of Negation
88%inclusion51 decks58 decks
76%synergy
Imperial Seal
86%inclusion50 decks58 decks
79%synergy
Orcish Bowmasters
86%inclusion50 decks58 decks
76%synergy
Flusterstorm
84%inclusion49 decks58 decks
76%synergy
Game Changers
Mana Vault
100%inclusion58 decks58 decks
91%synergy
Enlightened Tutor
100%inclusion58 decks58 decks
80%synergy
Force of Will
100%inclusion58 decks58 decks
87%synergy
Ancient Tomb
98%inclusion57 decks58 decks
85%synergy
Rhystic Study
98%inclusion57 decks58 decks
67%synergy
Chrome Mox
98%inclusion57 decks58 decks
89%synergy
Vampiric Tutor
98%inclusion57 decks58 decks
81%synergy
Demonic Tutor
98%inclusion57 decks58 decks
77%synergy
Mox Diamond
98%inclusion57 decks58 decks
91%synergy
Smothering Tithe
95%inclusion55 decks58 decks
63%synergy
Creatures
Lotho, Corrupt Shirriff
83%inclusion48 decks58 decks
66%synergy
Ranger-Captain of Eos
79%inclusion46 decks58 decks
73%synergy
Grand Abolisher
78%inclusion45 decks58 decks
63%synergy
Valley Floodcaller
76%inclusion44 decks58 decks
72%synergy
Wan Shi Tong, Librarian
73%inclusion11 decks15 decks
68%synergy
Voice of Victory
60%inclusion24 decks40 decks
52%synergy
Opposition Agent
52%inclusion30 decks58 decks
43%synergy
Auriok Salvagers
50%inclusion29 decks58 decks
50%synergy
Mockingbird
47%inclusion27 decks58 decks
42%synergy
Displacer Kitten
45%inclusion26 decks58 decks
38%synergy
Archivist of Oghma
43%inclusion25 decks58 decks
36%synergy
Hullbreaker Horror
38%inclusion22 decks58 decks
32%synergy
Drannith Magistrate
36%inclusion21 decks58 decks
28%synergy
Tataru Taru
35%inclusion12 decks34 decks
27%synergy
Lurrus of the Dream-Den
34%inclusion20 decks58 decks
33%synergy
Ledger Shredder
34%inclusion20 decks58 decks
26%synergy
Faerie Mastermind
28%inclusion16 decks58 decks
18%synergy
Hedron Crab
26%inclusion15 decks58 decks
25%synergy
Ghostly Pilferer
22%inclusion13 decks58 decks
15%synergy
Talion, the Kindly Lord
19%inclusion11 decks58 decks
11%synergy
Psychic Frog
17%inclusion10 decks58 decks
10%synergy
Phyrexian Metamorph
16%inclusion9 decks58 decks
7%synergy
High Fae Trickster
14%inclusion8 decks56 decks
10%synergy
Pollywog Prodigy
14%inclusion8 decks58 decks
10%synergy
Snapcaster Mage
10%inclusion6 decks58 decks
8%synergy
Gilded Drake
10%inclusion6 decks58 decks
9%synergy
Emet-Selch of the Third Seat
8.8%inclusion3 decks34 decks
-1%synergy
Malevolent Hermit
8.6%inclusion5 decks58 decks
8%synergy
Doom Whisperer
6.9%inclusion4 decks58 decks
5%synergy
Leonin Relic-Warder
6.9%inclusion4 decks58 decks
7%synergy
Volatile Stormdrake
5.2%inclusion3 decks58 decks
4%synergy
Hoarding Broodlord
5.2%inclusion3 decks58 decks
3%synergy
Scrabbling Skullcrab
5.2%inclusion3 decks58 decks
4%synergy
Zur the Enchanter
5.2%inclusion3 decks58 decks
0%synergy
Dauthi Voidwalker
5.2%inclusion3 decks58 decks
-1%synergy
Instants
Demonic Consultation
79%inclusion46 decks58 decks
71%synergy
Pact of Negation
78%inclusion45 decks58 decks
70%synergy
Fierce Guardianship
76%inclusion44 decks58 decks
55%synergy
Borne Upon a Wind
74%inclusion43 decks58 decks
69%synergy
Swords to Plowshares
64%inclusion37 decks58 decks
-4%synergy
Mystical Tutor
60%inclusion35 decks58 decks
49%synergy
Cabal Ritual
59%inclusion34 decks58 decks
55%synergy
Gifts Ungiven
50%inclusion29 decks58 decks
48%synergy
Cyclonic Rift
48%inclusion28 decks58 decks
24%synergy
An Offer You Can't Refuse
45%inclusion26 decks58 decks
18%synergy
Into the Flood Maw
38%inclusion22 decks58 decks
34%synergy
Mana Drain
36%inclusion21 decks58 decks
19%synergy
Darkblast
34%inclusion20 decks58 decks
34%synergy
Chain of Vapor
24%inclusion14 decks58 decks
21%synergy
Retraction Helix
24%inclusion14 decks58 decks
23%synergy
Sink into Stupor
24%inclusion14 decks58 decks
11%synergy
Brain Freeze
22%inclusion13 decks58 decks
22%synergy
Culling the Weak
22%inclusion13 decks58 decks
21%synergy
Ad Nauseam
21%inclusion12 decks58 decks
18%synergy
Banishing Knack
14%inclusion8 decks58 decks
13%synergy
Deadly Rollick
12%inclusion7 decks58 decks
-3%synergy
Path to Exile
12%inclusion7 decks58 decks
-30%synergy
Orim's Chant
10%inclusion6 decks58 decks
9%synergy
Dispel
8.6%inclusion5 decks58 decks
5%synergy
Rain of Filth
8.6%inclusion5 decks58 decks
8%synergy
Muddle the Mixture
6.9%inclusion4 decks58 decks
3%synergy
Lim-Dûl's Vault
6.9%inclusion4 decks58 decks
4%synergy
Louisoix's Sacrifice
6.7%inclusion2 decks30 decks
6%synergy
Sacrifice
5.2%inclusion3 decks58 decks
5%synergy
Flare of Denial
5.2%inclusion3 decks58 decks
3%synergy
Spell Pierce
5.2%inclusion3 decks58 decks
3%synergy
Miscast
5.2%inclusion3 decks58 decks
4%synergy
Saw in Half
5.2%inclusion3 decks58 decks
3%synergy
Strix Serenade
5.2%inclusion3 decks58 decks
2%synergy
Sorceries
Sevinne's Reclamation
76%inclusion44 decks58 decks
67%synergy
Beseech the Mirror
34%inclusion20 decks58 decks
31%synergy
Lively Dirge
31%inclusion18 decks58 decks
30%synergy
Reanimate
31%inclusion18 decks58 decks
15%synergy
Windfall
29%inclusion17 decks58 decks
16%synergy
Toxic Deluge
21%inclusion12 decks58 decks
1%synergy
Yawgmoth's Will
14%inclusion8 decks58 decks
12%synergy
Demonic Counsel
14%inclusion8 decks58 decks
13%synergy
Timetwister
14%inclusion8 decks58 decks
13%synergy
Flash Photography
13%inclusion2 decks15 decks
13%synergy
Cabal Therapy
12%inclusion7 decks58 decks
12%synergy
Diabolic Intent
12%inclusion7 decks58 decks
7%synergy
Mnemonic Betrayal
12%inclusion7 decks58 decks
9%synergy
Praetor's Grasp
10%inclusion6 decks58 decks
7%synergy
Unmarked Grave
6.9%inclusion4 decks58 decks
6%synergy
Transmute Artifact
6.9%inclusion4 decks58 decks
5%synergy
Gitaxian Probe
5.2%inclusion3 decks58 decks
3%synergy
Grim Tutor
5.2%inclusion3 decks58 decks
1%synergy
Utility Artifacts
The One Ring
72%inclusion42 decks58 decks
59%synergy
Wishclaw Talisman
64%inclusion37 decks58 decks
56%synergy
Vexing Bauble
14%inclusion8 decks58 decks
12%synergy
Mesmeric Orb
8.6%inclusion5 decks58 decks
7%synergy
Altar of the Brood
5.2%inclusion3 decks58 decks
4%synergy
Cursed Totem
5.2%inclusion3 decks58 decks
3%synergy
Enchantments
Tinybones Joins Up
76%inclusion44 decks58 decks
75%synergy
Necropotence
64%inclusion37 decks58 decks
57%synergy
Amphibian Downpour
64%inclusion37 decks58 decks
59%synergy
Chains of Mephistopheles
62%inclusion36 decks58 decks
62%synergy
The Meathook Massacre
55%inclusion32 decks58 decks
52%synergy
Copy Artifact
53%inclusion31 decks58 decks
52%synergy
Ripples of Undeath
47%inclusion27 decks58 decks
44%synergy
Blind Obedience
47%inclusion27 decks58 decks
34%synergy
Mirrormade
45%inclusion26 decks58 decks
35%synergy
Static Prison
41%inclusion24 decks58 decks
41%synergy
Touch the Spirit Realm
38%inclusion22 decks58 decks
35%synergy
Steal Enchantment
36%inclusion21 decks58 decks
35%synergy
Founding the Third Path
31%inclusion18 decks58 decks
31%synergy
Counterbalance
29%inclusion17 decks58 decks
28%synergy
Trouble in Pairs
24%inclusion14 decks58 decks
19%synergy
Copy Enchantment
21%inclusion12 decks58 decks
16%synergy
Leyline of Anticipation
12%inclusion7 decks58 decks
8%synergy
Charitable Levy
10%inclusion6 decks58 decks
10%synergy
Aura of Silence
10%inclusion6 decks58 decks
7%synergy
Seal of Cleansing
8.6%inclusion5 decks58 decks
7%synergy
Monologue Tax
8.6%inclusion5 decks58 decks
2%synergy
Power Artifact
8.6%inclusion5 decks58 decks
8%synergy
Stillness in Motion
7.9%inclusion3 decks38 decks
7%synergy
Teval's Judgment
7.5%inclusion3 decks40 decks
7%synergy
Seal of Removal
6.9%inclusion4 decks58 decks
6%synergy
Second Chance
5.2%inclusion3 decks58 decks
5%synergy
Planeswalkers
Teferi, Time Raveler
41%inclusion24 decks58 decks
33%synergy
Tezzeret, Cruel Captain
11%inclusion3 decks27 decks
9%synergy
Utility Lands
Otawara, Soaring City
88%inclusion51 decks58 decks
69%synergy
City of Traitors
45%inclusion26 decks58 decks
44%synergy
Urza's Saga
41%inclusion24 decks58 decks
30%synergy
Emergence Zone
36%inclusion21 decks58 decks
34%synergy
Minamo, School at Water's Edge
34%inclusion20 decks58 decks
31%synergy
Serra's Sanctum
31%inclusion18 decks58 decks
29%synergy
Cephalid Coliseum
29%inclusion17 decks58 decks
26%synergy
Urborg, Tomb of Yawgmoth
14%inclusion8 decks58 decks
1%synergy
Takenuma, Abandoned Mire
12%inclusion7 decks58 decks
6%synergy
Phyrexian Tower
10%inclusion6 decks58 decks
7%synergy
Hall of Heliod's Generosity
8.6%inclusion5 decks58 decks
-5%synergy
Bazaar of Baghdad
8.6%inclusion5 decks58 decks
8%synergy
Mistrise Village
5.0%inclusion2 decks40 decks
1%synergy
Mana Artifacts
Sol Ring
100%inclusion58 decks58 decks
10%synergy
Arcane Signet
97%inclusion56 decks58 decks
9%synergy
Lotus Petal
97%inclusion56 decks58 decks
86%synergy
Lion's Eye Diamond
90%inclusion52 decks58 decks
88%synergy
Mox Opal
83%inclusion48 decks58 decks
74%synergy
Talisman of Dominance
72%inclusion42 decks58 decks
23%synergy
Fellwar Stone
71%inclusion41 decks58 decks
37%synergy
Grim Monolith
60%inclusion35 decks58 decks
57%synergy
Talisman of Progress
43%inclusion25 decks58 decks
0%synergy
Mox Amber
43%inclusion25 decks58 decks
37%synergy
Talisman of Hierarchy
26%inclusion15 decks58 decks
-18%synergy
Basalt Monolith
10%inclusion6 decks58 decks
8%synergy
Azorius Signet
5.2%inclusion3 decks58 decks
-26%synergy
Dimir Signet
5.2%inclusion3 decks58 decks
-26%synergy
Lands
Tundra
100%inclusion58 decks58 decks
84%synergy
Underground Sea
100%inclusion58 decks58 decks
84%synergy
Polluted Delta
100%inclusion58 decks58 decks
62%synergy
Scrubland
100%inclusion58 decks58 decks
84%synergy
Marsh Flats
100%inclusion58 decks58 decks
64%synergy
Flooded Strand
100%inclusion58 decks58 decks
62%synergy
Command Tower
98%inclusion57 decks58 decks
6%synergy
Watery Grave
97%inclusion56 decks58 decks
46%synergy
Hallowed Fountain
95%inclusion55 decks58 decks
45%synergy
Gemstone Caverns
93%inclusion54 decks58 decks
85%synergy
Godless Shrine
91%inclusion53 decks58 decks
40%synergy
City of Brass
91%inclusion53 decks58 decks
76%synergy
Mana Confluence
90%inclusion52 decks58 decks
76%synergy
Misty Rainforest
86%inclusion50 decks58 decks
75%synergy
Verdant Catacombs
79%inclusion46 decks58 decks
69%synergy
Scalding Tarn
78%inclusion45 decks58 decks
67%synergy
Bloodstained Mire
74%inclusion43 decks58 decks
63%synergy
Windswept Heath
66%inclusion38 decks58 decks
56%synergy
Morphic Pool
62%inclusion36 decks58 decks
28%synergy
Arid Mesa
62%inclusion36 decks58 decks
52%synergy
Undercity Sewers
50%inclusion29 decks58 decks
36%synergy
Exotic Orchard
50%inclusion29 decks58 decks
-9%synergy
Sea of Clouds
41%inclusion24 decks58 decks
6%synergy
Starting Town
38%inclusion13 decks34 decks
34%synergy
Vault of Champions
34%inclusion20 decks58 decks
2%synergy
Island
31%inclusion18 decks58 decks
-62%synergy
Swamp
29%inclusion17 decks58 decks
-62%synergy
Cavern of Souls
26%inclusion15 decks58 decks
19%synergy
Shadowy Backstreet
24%inclusion14 decks58 decks
12%synergy
Sink into Stupor
24%inclusion14 decks58 decks
11%synergy
Meticulous Archive
21%inclusion12 decks58 decks
7%synergy
Plains
17%inclusion10 decks58 decks
-74%synergy
Forbidden Orchard
14%inclusion8 decks58 decks
11%synergy
Spire of Industry
12%inclusion7 decks58 decks
4%synergy
Raffine's Tower
8.6%inclusion5 decks58 decks
-32%synergy
Gloomlake Verge
8.6%inclusion5 decks58 decks
-2%synergy
Floodfarm Verge
8.6%inclusion5 decks58 decks
-3%synergy
Talon Gates of Madara
6.9%inclusion4 decks58 decks
6%synergy
Underground River
6.9%inclusion4 decks58 decks
-27%synergy
Caves of Koilos
5.2%inclusion3 decks58 decks
-30%synergy
Tarnished Citadel
5.2%inclusion3 decks58 decks
4%synergy
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