The Master of Keys (Commander) - Expensive cEDH

The Master of Keys
Rank #306
57decks
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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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Utility Lands
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Voracious Tome-Skimmer
25%inclusion1 decks4 decks
24%synergy
Mornsong Aria
25%inclusion1 decks4 decks
24%synergy
High Synergy Cards
Intuition
95%inclusion54 decks57 decks
93%synergy
Entomb
98%inclusion56 decks57 decks
91%synergy
Abdel Adrian, Gorion's Ward
93%inclusion53 decks57 decks
91%synergy
Necromancy
95%inclusion54 decks57 decks
90%synergy
Tainted Pact
93%inclusion53 decks57 decks
86%synergy
Animate Dead
95%inclusion54 decks57 decks
85%synergy
Wan Shi Tong, Librarian
90%inclusion9 decks10 decks
85%synergy
Dance of the Dead
86%inclusion49 decks57 decks
84%synergy
Mindbreak Trap
89%inclusion51 decks57 decks
83%synergy
Dress Down
84%inclusion48 decks57 decks
82%synergy
Top Cards
Mystic Remora
100%inclusion57 decks57 decks
79%synergy
Esper Sentinel
100%inclusion57 decks57 decks
72%synergy
Dark Ritual
96%inclusion55 decks57 decks
77%synergy
Smothering Tithe
95%inclusion54 decks57 decks
63%synergy
Swan Song
91%inclusion52 decks57 decks
72%synergy
Orcish Bowmasters
89%inclusion51 decks57 decks
79%synergy
Silence
88%inclusion50 decks57 decks
77%synergy
Force of Negation
88%inclusion50 decks57 decks
76%synergy
Mental Misstep
86%inclusion49 decks57 decks
79%synergy
Imperial Seal
86%inclusion49 decks57 decks
78%synergy
Game Changers
Mana Vault
100%inclusion57 decks57 decks
91%synergy
Force of Will
100%inclusion57 decks57 decks
87%synergy
Enlightened Tutor
100%inclusion57 decks57 decks
80%synergy
Thassa's Oracle
98%inclusion56 decks57 decks
89%synergy
Ancient Tomb
98%inclusion56 decks57 decks
85%synergy
Rhystic Study
98%inclusion56 decks57 decks
66%synergy
Demonic Tutor
98%inclusion56 decks57 decks
77%synergy
Vampiric Tutor
98%inclusion56 decks57 decks
81%synergy
Chrome Mox
98%inclusion56 decks57 decks
89%synergy
Mox Diamond
98%inclusion56 decks57 decks
91%synergy
Creatures
Grand Abolisher
82%inclusion47 decks57 decks
68%synergy
Ranger-Captain of Eos
81%inclusion46 decks57 decks
74%synergy
Lotho, Corrupt Shirriff
79%inclusion45 decks57 decks
62%synergy
Valley Floodcaller
77%inclusion44 decks57 decks
73%synergy
Voice of Victory
61%inclusion23 decks38 decks
52%synergy
Mockingbird
51%inclusion29 decks57 decks
46%synergy
Opposition Agent
49%inclusion28 decks57 decks
40%synergy
Displacer Kitten
47%inclusion27 decks57 decks
40%synergy
Auriok Salvagers
47%inclusion27 decks57 decks
47%synergy
Archivist of Oghma
46%inclusion26 decks57 decks
39%synergy
Lurrus of the Dream-Den
42%inclusion24 decks57 decks
41%synergy
Hullbreaker Horror
40%inclusion23 decks57 decks
34%synergy
Drannith Magistrate
37%inclusion21 decks57 decks
29%synergy
Tataru Taru
35%inclusion11 decks31 decks
27%synergy
Ledger Shredder
33%inclusion19 decks57 decks
24%synergy
Hedron Crab
32%inclusion18 decks57 decks
31%synergy
Faerie Mastermind
25%inclusion14 decks57 decks
15%synergy
Psychic Frog
23%inclusion13 decks57 decks
16%synergy
Ghostly Pilferer
19%inclusion11 decks57 decks
12%synergy
Talion, the Kindly Lord
18%inclusion10 decks57 decks
9%synergy
Phyrexian Metamorph
16%inclusion9 decks57 decks
7%synergy
Pollywog Prodigy
16%inclusion9 decks57 decks
12%synergy
High Fae Trickster
15%inclusion8 decks54 decks
10%synergy
Snapcaster Mage
11%inclusion6 decks57 decks
9%synergy
Doom Whisperer
8.8%inclusion5 decks57 decks
7%synergy
Gilded Drake
8.8%inclusion5 decks57 decks
7%synergy
Leonin Relic-Warder
7.0%inclusion4 decks57 decks
7%synergy
Malevolent Hermit
7.0%inclusion4 decks57 decks
6%synergy
Emet-Selch of the Third Seat
6.5%inclusion2 decks31 decks
-3%synergy
Volatile Stormdrake
5.3%inclusion3 decks57 decks
4%synergy
Overlord of the Balemurk
5.3%inclusion3 decks57 decks
3%synergy
Zur the Enchanter
5.3%inclusion3 decks57 decks
0%synergy
Scrabbling Skullcrab
5.3%inclusion3 decks57 decks
4%synergy
Hoarding Broodlord
5.3%inclusion3 decks57 decks
3%synergy
Dauthi Voidwalker
5.3%inclusion3 decks57 decks
-1%synergy
Instants
Flusterstorm
84%inclusion48 decks57 decks
76%synergy
Demonic Consultation
82%inclusion47 decks57 decks
74%synergy
Fierce Guardianship
77%inclusion44 decks57 decks
57%synergy
Pact of Negation
77%inclusion44 decks57 decks
69%synergy
Borne Upon a Wind
75%inclusion43 decks57 decks
71%synergy
Swords to Plowshares
68%inclusion39 decks57 decks
0%synergy
Cabal Ritual
63%inclusion36 decks57 decks
60%synergy
Mystical Tutor
61%inclusion35 decks57 decks
50%synergy
Cyclonic Rift
53%inclusion30 decks57 decks
28%synergy
Gifts Ungiven
47%inclusion27 decks57 decks
45%synergy
An Offer You Can't Refuse
44%inclusion25 decks57 decks
17%synergy
Into the Flood Maw
42%inclusion24 decks57 decks
38%synergy
Darkblast
37%inclusion21 decks57 decks
37%synergy
Mana Drain
37%inclusion21 decks57 decks
19%synergy
Culling the Weak
30%inclusion17 decks57 decks
28%synergy
Ad Nauseam
30%inclusion17 decks57 decks
27%synergy
Chain of Vapor
26%inclusion15 decks57 decks
23%synergy
Sink into Stupor
25%inclusion14 decks57 decks
12%synergy
Retraction Helix
19%inclusion11 decks57 decks
19%synergy
Brain Freeze
18%inclusion10 decks57 decks
17%synergy
Path to Exile
16%inclusion9 decks57 decks
-26%synergy
Rain of Filth
14%inclusion8 decks57 decks
14%synergy
Banishing Knack
12%inclusion7 decks57 decks
12%synergy
Deadly Rollick
11%inclusion6 decks57 decks
-4%synergy
Louisoix's Sacrifice
7.4%inclusion2 decks27 decks
7%synergy
Dispel
7.0%inclusion4 decks57 decks
3%synergy
Orim's Chant
7.0%inclusion4 decks57 decks
6%synergy
Flare of Denial
7.0%inclusion4 decks57 decks
5%synergy
Muddle the Mixture
7.0%inclusion4 decks57 decks
3%synergy
Lim-Dûl's Vault
5.3%inclusion3 decks57 decks
2%synergy
Strix Serenade
5.3%inclusion3 decks57 decks
2%synergy
Saw in Half
5.3%inclusion3 decks57 decks
3%synergy
Sacrifice
5.3%inclusion3 decks57 decks
5%synergy
Spell Pierce
5.3%inclusion3 decks57 decks
3%synergy
Miscast
5.3%inclusion3 decks57 decks
4%synergy
Sorceries
Sevinne's Reclamation
72%inclusion41 decks57 decks
63%synergy
Lively Dirge
32%inclusion18 decks57 decks
30%synergy
Reanimate
30%inclusion17 decks57 decks
14%synergy
Windfall
28%inclusion16 decks57 decks
14%synergy
Beseech the Mirror
28%inclusion16 decks57 decks
24%synergy
Toxic Deluge
21%inclusion12 decks57 decks
1%synergy
Mnemonic Betrayal
12%inclusion7 decks57 decks
9%synergy
Timetwister
12%inclusion7 decks57 decks
11%synergy
Yawgmoth's Will
12%inclusion7 decks57 decks
11%synergy
Demonic Counsel
11%inclusion6 decks57 decks
9%synergy
Diabolic Intent
8.8%inclusion5 decks57 decks
4%synergy
Unmarked Grave
8.8%inclusion5 decks57 decks
7%synergy
Cabal Therapy
7.0%inclusion4 decks57 decks
7%synergy
Gitaxian Probe
7.0%inclusion4 decks57 decks
5%synergy
Praetor's Grasp
7.0%inclusion4 decks57 decks
4%synergy
Transmute Artifact
7.0%inclusion4 decks57 decks
5%synergy
Utility Artifacts
The One Ring
81%inclusion46 decks57 decks
67%synergy
Wishclaw Talisman
65%inclusion37 decks57 decks
57%synergy
Vexing Bauble
12%inclusion7 decks57 decks
10%synergy
Mesmeric Orb
8.8%inclusion5 decks57 decks
8%synergy
Cursed Totem
7.0%inclusion4 decks57 decks
5%synergy
Altar of the Brood
5.3%inclusion3 decks57 decks
4%synergy
Enchantments
Tinybones Joins Up
75%inclusion43 decks57 decks
74%synergy
Necropotence
68%inclusion39 decks57 decks
62%synergy
Amphibian Downpour
67%inclusion38 decks57 decks
62%synergy
Copy Artifact
56%inclusion32 decks57 decks
55%synergy
Chains of Mephistopheles
54%inclusion31 decks57 decks
54%synergy
The Meathook Massacre
49%inclusion28 decks57 decks
46%synergy
Ripples of Undeath
44%inclusion25 decks57 decks
41%synergy
Blind Obedience
44%inclusion25 decks57 decks
32%synergy
Steal Enchantment
39%inclusion22 decks57 decks
38%synergy
Mirrormade
39%inclusion22 decks57 decks
29%synergy
Static Prison
37%inclusion21 decks57 decks
36%synergy
Counterbalance
33%inclusion19 decks57 decks
32%synergy
Founding the Third Path
33%inclusion19 decks57 decks
33%synergy
Touch the Spirit Realm
33%inclusion19 decks57 decks
31%synergy
Trouble in Pairs
23%inclusion13 decks57 decks
17%synergy
Copy Enchantment
16%inclusion9 decks57 decks
11%synergy
Charitable Levy
11%inclusion6 decks57 decks
10%synergy
Monologue Tax
11%inclusion6 decks57 decks
4%synergy
Aura of Silence
11%inclusion6 decks57 decks
7%synergy
Power Artifact
8.8%inclusion5 decks57 decks
8%synergy
Leyline of Anticipation
8.8%inclusion5 decks57 decks
4%synergy
Stillness in Motion
8.1%inclusion3 decks37 decks
8%synergy
Teval's Judgment
7.9%inclusion3 decks38 decks
7%synergy
Second Chance
7.0%inclusion4 decks57 decks
7%synergy
Seal of Cleansing
7.0%inclusion4 decks57 decks
6%synergy
Seal of Removal
5.3%inclusion3 decks57 decks
5%synergy
Planeswalkers
Teferi, Time Raveler
44%inclusion25 decks57 decks
35%synergy
Tezzeret, Cruel Captain
17%inclusion4 decks24 decks
15%synergy
Utility Lands
Otawara, Soaring City
89%inclusion51 decks57 decks
70%synergy
City of Traitors
51%inclusion29 decks57 decks
50%synergy
Minamo, School at Water's Edge
39%inclusion22 decks57 decks
35%synergy
Urza's Saga
37%inclusion21 decks57 decks
25%synergy
Emergence Zone
28%inclusion16 decks57 decks
26%synergy
Cephalid Coliseum
26%inclusion15 decks57 decks
23%synergy
Serra's Sanctum
25%inclusion14 decks57 decks
23%synergy
Urborg, Tomb of Yawgmoth
12%inclusion7 decks57 decks
-1%synergy
Bazaar of Baghdad
11%inclusion6 decks57 decks
10%synergy
Takenuma, Abandoned Mire
8.8%inclusion5 decks57 decks
2%synergy
Phyrexian Tower
7.0%inclusion4 decks57 decks
3%synergy
Hall of Heliod's Generosity
7.0%inclusion4 decks57 decks
-6%synergy
Mistrise Village
5.3%inclusion2 decks38 decks
2%synergy
Mana Artifacts
Sol Ring
100%inclusion57 decks57 decks
10%synergy
Arcane Signet
96%inclusion55 decks57 decks
9%synergy
Lotus Petal
96%inclusion55 decks57 decks
86%synergy
Lion's Eye Diamond
91%inclusion52 decks57 decks
89%synergy
Mox Opal
82%inclusion47 decks57 decks
74%synergy
Talisman of Dominance
77%inclusion44 decks57 decks
28%synergy
Fellwar Stone
72%inclusion41 decks57 decks
38%synergy
Grim Monolith
68%inclusion39 decks57 decks
65%synergy
Mox Amber
46%inclusion26 decks57 decks
39%synergy
Talisman of Progress
40%inclusion23 decks57 decks
-3%synergy
Talisman of Hierarchy
30%inclusion17 decks57 decks
-14%synergy
Basalt Monolith
11%inclusion6 decks57 decks
8%synergy
Dimir Signet
5.3%inclusion3 decks57 decks
-27%synergy
Lands
Scrubland
100%inclusion57 decks57 decks
84%synergy
Polluted Delta
100%inclusion57 decks57 decks
62%synergy
Watery Grave
100%inclusion57 decks57 decks
50%synergy
Tundra
100%inclusion57 decks57 decks
84%synergy
Underground Sea
100%inclusion57 decks57 decks
84%synergy
Marsh Flats
100%inclusion57 decks57 decks
64%synergy
Hallowed Fountain
100%inclusion57 decks57 decks
51%synergy
Flooded Strand
100%inclusion57 decks57 decks
62%synergy
Command Tower
98%inclusion56 decks57 decks
6%synergy
Gemstone Caverns
93%inclusion53 decks57 decks
85%synergy
Godless Shrine
93%inclusion53 decks57 decks
42%synergy
Mana Confluence
91%inclusion52 decks57 decks
77%synergy
City of Brass
91%inclusion52 decks57 decks
76%synergy
Misty Rainforest
88%inclusion50 decks57 decks
77%synergy
Scalding Tarn
81%inclusion46 decks57 decks
70%synergy
Verdant Catacombs
79%inclusion45 decks57 decks
69%synergy
Bloodstained Mire
77%inclusion44 decks57 decks
66%synergy
Windswept Heath
67%inclusion38 decks57 decks
57%synergy
Morphic Pool
63%inclusion36 decks57 decks
29%synergy
Arid Mesa
61%inclusion35 decks57 decks
51%synergy
Undercity Sewers
58%inclusion33 decks57 decks
44%synergy
Exotic Orchard
51%inclusion29 decks57 decks
-8%synergy
Starting Town
35%inclusion11 decks31 decks
31%synergy
Sea of Clouds
35%inclusion20 decks57 decks
-1%synergy
Vault of Champions
35%inclusion20 decks57 decks
2%synergy
Swamp
30%inclusion17 decks57 decks
-62%synergy
Island
30%inclusion17 decks57 decks
-63%synergy
Shadowy Backstreet
25%inclusion14 decks57 decks
12%synergy
Sink into Stupor
25%inclusion14 decks57 decks
12%synergy
Cavern of Souls
21%inclusion12 decks57 decks
14%synergy
Meticulous Archive
21%inclusion12 decks57 decks
7%synergy
Plains
19%inclusion11 decks57 decks
-72%synergy
Forbidden Orchard
18%inclusion10 decks57 decks
15%synergy
Gloomlake Verge
11%inclusion6 decks57 decks
-1%synergy
Spire of Industry
11%inclusion6 decks57 decks
2%synergy
Raffine's Tower
8.8%inclusion5 decks57 decks
-32%synergy
Floodfarm Verge
8.8%inclusion5 decks57 decks
-2%synergy
Underground River
7.0%inclusion4 decks57 decks
-26%synergy
Talon Gates of Madara
7.0%inclusion4 decks57 decks
6%synergy
Caves of Koilos
5.3%inclusion3 decks57 decks
-30%synergy
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