The Master of Keys (Commander) - Expensive

The Master of Keys
Rank #307
688decks
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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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Commander Spellbook
Moxfield
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Top Cards
Game Changers
Creatures
Instants
Sorceries
Utility Artifacts
Enchantments
Planeswalkers
Utility Lands
Mana Artifacts
Lands
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Mornsong Aria
7.3%inclusion3 decks41 decks
7%synergy
Voracious Tome-Skimmer
2.4%inclusion1 decks41 decks
2%synergy
High Synergy Cards
Necromancy
95%inclusion656 decks688 decks
91%synergy
Abdel Adrian, Gorion's Ward
90%inclusion622 decks688 decks
89%synergy
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Intuition
90%inclusion621 decks688 decks
89%synergy
Animate Dead
97%inclusion668 decks688 decks
87%synergy
Entomb
94%inclusion645 decks688 decks
87%synergy
Dance of the Dead
89%inclusion609 decks688 decks
86%synergy
Tainted Pact
93%inclusion643 decks688 decks
86%synergy
Dress Down
87%inclusion599 decks688 decks
85%synergy
Orcish Bowmasters
94%inclusion645 decks688 decks
83%synergy
Silence
93%inclusion640 decks688 decks
83%synergy
Top Cards
Mystic Remora
99%inclusion683 decks688 decks
78%synergy
Esper Sentinel
98%inclusion677 decks688 decks
71%synergy
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Dark Ritual
95%inclusion654 decks688 decks
76%synergy
Smothering Tithe
94%inclusion647 decks688 decks
62%synergy
Force of Negation
91%inclusion626 decks688 decks
79%synergy
Swan Song
91%inclusion624 decks688 decks
71%synergy
Flusterstorm
90%inclusion616 decks688 decks
81%synergy
Mindbreak Trap
88%inclusion606 decks688 decks
81%synergy
Demonic Consultation
87%inclusion599 decks688 decks
79%synergy
Imperial Seal
85%inclusion588 decks688 decks
78%synergy
Game Changers
Rhystic Study
99%inclusion684 decks688 decks
67%synergy
Demonic Tutor
99%inclusion679 decks688 decks
78%synergy
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Vampiric Tutor
99%inclusion679 decks688 decks
81%synergy
Mana Vault
99%inclusion678 decks688 decks
89%synergy
Mox Diamond
98%inclusion676 decks688 decks
91%synergy
Force of Will
98%inclusion674 decks688 decks
85%synergy
Chrome Mox
97%inclusion669 decks688 decks
88%synergy
Enlightened Tutor
97%inclusion668 decks688 decks
77%synergy
Ancient Tomb
97%inclusion665 decks688 decks
84%synergy
Thassa's Oracle
97%inclusion664 decks688 decks
87%synergy
Creatures
Grand Abolisher
85%inclusion587 decks688 decks
71%synergy
Ranger-Captain of Eos
85%inclusion582 decks688 decks
78%synergy
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Lotho, Corrupt Shirriff
80%inclusion549 decks688 decks
63%synergy
Valley Floodcaller
74%inclusion509 decks688 decks
70%synergy
Wan Shi Tong, Librarian
60%inclusion57 decks95 decks
55%synergy
Voice of Victory
58%inclusion180 decks308 decks
50%synergy
Opposition Agent
57%inclusion394 decks688 decks
49%synergy
Displacer Kitten
52%inclusion359 decks688 decks
45%synergy
Hullbreaker Horror
50%inclusion346 decks688 decks
44%synergy
Auriok Salvagers
45%inclusion308 decks688 decks
44%synergy
Mockingbird
44%inclusion305 decks688 decks
40%synergy
Drannith Magistrate
44%inclusion301 decks688 decks
36%synergy
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Archivist of Oghma
40%inclusion278 decks688 decks
34%synergy
Lurrus of the Dream-Den
35%inclusion238 decks688 decks
33%synergy
Ledger Shredder
30%inclusion207 decks688 decks
21%synergy
Talion, the Kindly Lord
29%inclusion197 decks688 decks
21%synergy
Tataru Taru
27%inclusion64 decks234 decks
19%synergy
Phyrexian Metamorph
26%inclusion176 decks688 decks
17%synergy
Pollywog Prodigy
22%inclusion151 decks688 decks
18%synergy
Hedron Crab
21%inclusion146 decks688 decks
21%synergy
Psychic Frog
20%inclusion137 decks688 decks
13%synergy
Faerie Mastermind
20%inclusion135 decks688 decks
10%synergy
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Dauthi Voidwalker
14%inclusion97 decks688 decks
8%synergy
Ghostly Pilferer
13%inclusion92 decks688 decks
6%synergy
Hoarding Broodlord
9.2%inclusion63 decks688 decks
7%synergy
Snapcaster Mage
9.2%inclusion63 decks688 decks
7%synergy
Gilded Drake
9.2%inclusion63 decks688 decks
7%synergy
High Fae Trickster
9.0%inclusion46 decks510 decks
4%synergy
Leonin Relic-Warder
8.3%inclusion57 decks688 decks
8%synergy
Volatile Stormdrake
8.1%inclusion56 decks688 decks
7%synergy
Emet-Selch of the Third Seat
7.2%inclusion17 decks235 decks
-2%synergy
Overlord of the Balemurk
5.1%inclusion35 decks688 decks
3%synergy
Instants
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Mental Misstep
85%inclusion583 decks688 decks
78%synergy
Pact of Negation
84%inclusion577 decks688 decks
76%synergy
Swords to Plowshares
76%inclusion520 decks688 decks
7%synergy
Borne Upon a Wind
75%inclusion519 decks688 decks
71%synergy
Fierce Guardianship
74%inclusion509 decks688 decks
53%synergy
Mystical Tutor
70%inclusion479 decks688 decks
58%synergy
Cabal Ritual
64%inclusion443 decks688 decks
61%synergy
Cyclonic Rift
58%inclusion400 decks688 decks
34%synergy
An Offer You Can't Refuse
56%inclusion387 decks688 decks
29%synergy
Chain of Vapor
47%inclusion320 decks688 decks
43%synergy
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Mana Drain
38%inclusion258 decks688 decks
20%synergy
Into the Flood Maw
35%inclusion239 decks688 decks
31%synergy
Gifts Ungiven
28%inclusion194 decks688 decks
26%synergy
Ad Nauseam
26%inclusion177 decks688 decks
23%synergy
Sink into Stupor
25%inclusion171 decks688 decks
12%synergy
Culling the Weak
20%inclusion137 decks688 decks
18%synergy
Retraction Helix
19%inclusion131 decks688 decks
18%synergy
Brain Freeze
17%inclusion120 decks688 decks
17%synergy
Path to Exile
16%inclusion109 decks688 decks
-26%synergy
Darkblast
15%inclusion104 decks688 decks
15%synergy
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Banishing Knack
11%inclusion79 decks688 decks
11%synergy
Dispel
9.0%inclusion62 decks688 decks
5%synergy
Deadly Rollick
8.0%inclusion55 decks688 decks
-6%synergy
Saw in Half
8.0%inclusion55 decks688 decks
6%synergy
Strix Serenade
7.4%inclusion51 decks688 decks
4%synergy
Dramatic Reversal
6.3%inclusion43 decks688 decks
4%synergy
Sacrifice
6.0%inclusion41 decks688 decks
5%synergy
Lim-Dûl's Vault
5.4%inclusion37 decks688 decks
2%synergy
Orim's Chant
5.2%inclusion36 decks688 decks
4%synergy
Muddle the Mixture
5.1%inclusion35 decks688 decks
1%synergy
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Rain of Filth
5.1%inclusion35 decks688 decks
5%synergy
Sorceries
Sevinne's Reclamation
71%inclusion491 decks688 decks
62%synergy
Reanimate
36%inclusion246 decks688 decks
20%synergy
Toxic Deluge
34%inclusion233 decks688 decks
14%synergy
Windfall
30%inclusion205 decks688 decks
16%synergy
Beseech the Mirror
26%inclusion181 decks688 decks
22%synergy
Mnemonic Betrayal
25%inclusion171 decks688 decks
22%synergy
Lively Dirge
22%inclusion152 decks688 decks
21%synergy
Demonic Counsel
16%inclusion107 decks688 decks
14%synergy
Yawgmoth's Will
15%inclusion103 decks688 decks
14%synergy
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Praetor's Grasp
11%inclusion73 decks688 decks
8%synergy
Diabolic Intent
10%inclusion71 decks688 decks
5%synergy
Cabal Therapy
10%inclusion70 decks688 decks
10%synergy
Unmarked Grave
10%inclusion70 decks688 decks
9%synergy
Utility Artifacts
The One Ring
84%inclusion580 decks688 decks
71%synergy
Wishclaw Talisman
70%inclusion479 decks688 decks
61%synergy
Cursed Totem
10%inclusion71 decks688 decks
8%synergy
Vexing Bauble
8.1%inclusion56 decks688 decks
6%synergy
Mesmeric Orb
7.6%inclusion52 decks688 decks
6%synergy
Sensei's Divining Top
6.1%inclusion42 decks688 decks
-4%synergy
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Isochron Scepter
6.0%inclusion41 decks688 decks
4%synergy
Enchantments
Necropotence
71%inclusion491 decks688 decks
65%synergy
Tinybones Joins Up
63%inclusion432 decks688 decks
62%synergy
Blind Obedience
59%inclusion407 decks688 decks
47%synergy
Copy Artifact
52%inclusion357 decks688 decks
51%synergy
Amphibian Downpour
50%inclusion343 decks688 decks
45%synergy
Ripples of Undeath
47%inclusion323 decks688 decks
44%synergy
Touch the Spirit Realm
43%inclusion296 decks688 decks
41%synergy
Static Prison
37%inclusion253 decks688 decks
36%synergy
The Meathook Massacre
36%inclusion251 decks688 decks
33%synergy
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Mirrormade
33%inclusion226 decks688 decks
23%synergy
Steal Enchantment
31%inclusion211 decks688 decks
30%synergy
Chains of Mephistopheles
22%inclusion149 decks688 decks
21%synergy
Trouble in Pairs
21%inclusion144 decks688 decks
15%synergy
Counterbalance
21%inclusion143 decks688 decks
19%synergy
Founding the Third Path
17%inclusion118 decks688 decks
17%synergy
Chthonian Nightmare
13%inclusion88 decks688 decks
12%synergy
Copy Enchantment
12%inclusion84 decks688 decks
8%synergy
Seal of Removal
9.2%inclusion63 decks688 decks
9%synergy
Power Artifact
7.3%inclusion50 decks688 decks
7%synergy
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Aura of Silence
7.0%inclusion48 decks688 decks
4%synergy
Seal of Cleansing
6.8%inclusion47 decks688 decks
5%synergy
Monologue Tax
6.8%inclusion47 decks688 decks
1%synergy
Dance of Many
6.3%inclusion43 decks688 decks
6%synergy
Leyline of Anticipation
6.1%inclusion42 decks688 decks
2%synergy
Charitable Levy
5.7%inclusion39 decks688 decks
5%synergy
Planeswalkers
Teferi, Time Raveler
52%inclusion361 decks688 decks
44%synergy
Utility Lands
Otawara, Soaring City
92%inclusion636 decks688 decks
73%synergy
Urza's Saga
44%inclusion305 decks688 decks
32%synergy
Minamo, School at Water's Edge
35%inclusion243 decks688 decks
31%synergy
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Emergence Zone
30%inclusion206 decks688 decks
28%synergy
City of Traitors
30%inclusion203 decks688 decks
28%synergy
Serra's Sanctum
24%inclusion168 decks688 decks
23%synergy
Cephalid Coliseum
22%inclusion149 decks688 decks
18%synergy
Takenuma, Abandoned Mire
10%inclusion72 decks688 decks
4%synergy
Urborg, Tomb of Yawgmoth
7.7%inclusion53 decks688 decks
-5%synergy
Hall of Heliod's Generosity
5.8%inclusion40 decks688 decks
-7%synergy
Mana Artifacts
Sol Ring
100%inclusion686 decks688 decks
10%synergy
Arcane Signet
97%inclusion668 decks688 decks
9%synergy
Lotus Petal
96%inclusion660 decks688 decks
85%synergy
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Mox Opal
86%inclusion591 decks688 decks
77%synergy
Lion's Eye Diamond
84%inclusion575 decks688 decks
81%synergy
Talisman of Dominance
83%inclusion573 decks688 decks
34%synergy
Fellwar Stone
79%inclusion544 decks688 decks
45%synergy
Grim Monolith
62%inclusion424 decks688 decks
58%synergy
Talisman of Progress
51%inclusion350 decks688 decks
8%synergy
Mox Amber
41%inclusion279 decks688 decks
34%synergy
Talisman of Hierarchy
31%inclusion212 decks688 decks
-13%synergy
Basalt Monolith
8.0%inclusion55 decks688 decks
6%synergy
Lands
Tundra
100%inclusion686 decks688 decks
84%synergy
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Scrubland
100%inclusion686 decks688 decks
84%synergy
Underground Sea
100%inclusion686 decks688 decks
84%synergy
Watery Grave
99%inclusion682 decks688 decks
49%synergy
Polluted Delta
99%inclusion681 decks688 decks
61%synergy
Flooded Strand
98%inclusion676 decks688 decks
60%synergy
Hallowed Fountain
98%inclusion675 decks688 decks
48%synergy
Command Tower
98%inclusion674 decks688 decks
5%synergy
Marsh Flats
98%inclusion671 decks688 decks
61%synergy
Godless Shrine
94%inclusion648 decks688 decks
43%synergy
Mana Confluence
93%inclusion643 decks688 decks
80%synergy
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Gemstone Caverns
93%inclusion639 decks688 decks
85%synergy
City of Brass
92%inclusion633 decks688 decks
77%synergy
Misty Rainforest
88%inclusion608 decks688 decks
77%synergy
Bloodstained Mire
85%inclusion587 decks688 decks
74%synergy
Verdant Catacombs
85%inclusion584 decks688 decks
75%synergy
Scalding Tarn
84%inclusion575 decks688 decks
72%synergy
Windswept Heath
73%inclusion502 decks688 decks
63%synergy
Arid Mesa
68%inclusion469 decks688 decks
58%synergy
Exotic Orchard
68%inclusion467 decks688 decks
9%synergy
Morphic Pool
63%inclusion436 decks688 decks
29%synergy
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Undercity Sewers
58%inclusion398 decks688 decks
44%synergy
Sea of Clouds
50%inclusion344 decks688 decks
14%synergy
Vault of Champions
39%inclusion269 decks688 decks
6%synergy
Island
36%inclusion251 decks688 decks
-56%synergy
Starting Town
31%inclusion74 decks235 decks
27%synergy
Swamp
28%inclusion191 decks688 decks
-64%synergy
Sink into Stupor
25%inclusion171 decks688 decks
12%synergy
Meticulous Archive
24%inclusion163 decks688 decks
10%synergy
Forbidden Orchard
19%inclusion132 decks688 decks
17%synergy
Plains
19%inclusion131 decks688 decks
-73%synergy
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Cavern of Souls
18%inclusion126 decks688 decks
12%synergy
Spire of Industry
17%inclusion118 decks688 decks
9%synergy
Shadowy Backstreet
16%inclusion108 decks688 decks
3%synergy
Talon Gates of Madara
13%inclusion88 decks688 decks
11%synergy
Underground River
8.3%inclusion57 decks688 decks
-25%synergy
Raffine's Tower
6.0%inclusion41 decks688 decks
-35%synergy
Gloomlake Verge
5.4%inclusion37 decks688 decks
-6%synergy
Silent Clearing
5.4%inclusion37 decks688 decks
3%synergy
Tarnished Citadel
5.1%inclusion35 decks688 decks
4%synergy
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