The Master of Keys (Commander) - Expensive cEDH Combo

The Master of Keys
Rank #316
8decks
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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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Wan Shi Tong, Librarian
100%inclusion1 decks1 decks
96%synergy
High Synergy Cards
Tinybones Joins Up
100%inclusion8 decks8 decks
99%synergy
Abdel Adrian, Gorion's Ward
100%inclusion8 decks8 decks
98%synergy
Dance of the Dead
100%inclusion8 decks8 decks
98%synergy
Dress Down
100%inclusion8 decks8 decks
97%synergy
Valley Floodcaller
100%inclusion8 decks8 decks
96%synergy
Necromancy
100%inclusion8 decks8 decks
95%synergy
Ranger-Captain of Eos
100%inclusion8 decks8 decks
93%synergy
Mindbreak Trap
100%inclusion8 decks8 decks
93%synergy
Entomb
100%inclusion8 decks8 decks
93%synergy
Mental Misstep
100%inclusion8 decks8 decks
93%synergy
Top Cards
Lotho, Corrupt Shirriff
100%inclusion8 decks8 decks
83%synergy
Tainted Pact
100%inclusion8 decks8 decks
92%synergy
Dark Ritual
100%inclusion8 decks8 decks
81%synergy
Esper Sentinel
100%inclusion8 decks8 decks
72%synergy
Flusterstorm
100%inclusion8 decks8 decks
92%synergy
Mystic Remora
100%inclusion8 decks8 decks
78%synergy
Silence
100%inclusion8 decks8 decks
90%synergy
Demonic Consultation
100%inclusion8 decks8 decks
91%synergy
Force of Negation
100%inclusion8 decks8 decks
88%synergy
Animate Dead
100%inclusion8 decks8 decks
90%synergy
Game Changers
Smothering Tithe
100%inclusion8 decks8 decks
68%synergy
Thassa's Oracle
100%inclusion8 decks8 decks
90%synergy
Ancient Tomb
100%inclusion8 decks8 decks
87%synergy
Intuition
100%inclusion8 decks8 decks
98%synergy
Mana Vault
100%inclusion8 decks8 decks
90%synergy
Demonic Tutor
100%inclusion8 decks8 decks
78%synergy
Force of Will
100%inclusion8 decks8 decks
87%synergy
Chrome Mox
100%inclusion8 decks8 decks
90%synergy
Vampiric Tutor
100%inclusion8 decks8 decks
82%synergy
Mox Diamond
100%inclusion8 decks8 decks
93%synergy
Creatures
Grand Abolisher
88%inclusion7 decks8 decks
73%synergy
Orcish Bowmasters
88%inclusion7 decks8 decks
76%synergy
Archivist of Oghma
75%inclusion6 decks8 decks
68%synergy
Voice of Victory
75%inclusion3 decks4 decks
67%synergy
Mockingbird
75%inclusion6 decks8 decks
71%synergy
Phyrexian Metamorph
63%inclusion5 decks8 decks
54%synergy
Displacer Kitten
50%inclusion4 decks8 decks
43%synergy
Opposition Agent
50%inclusion4 decks8 decks
41%synergy
Lurrus of the Dream-Den
50%inclusion4 decks8 decks
48%synergy
Auriok Salvagers
50%inclusion4 decks8 decks
50%synergy
Hedron Crab
38%inclusion3 decks8 decks
37%synergy
Hullbreaker Horror
38%inclusion3 decks8 decks
31%synergy
Ledger Shredder
38%inclusion3 decks8 decks
29%synergy
Snapcaster Mage
25%inclusion2 decks8 decks
23%synergy
Faerie Mastermind
25%inclusion2 decks8 decks
16%synergy
Ghostly Pilferer
25%inclusion2 decks8 decks
18%synergy
Tataru Taru
25%inclusion1 decks4 decks
17%synergy
Volatile Stormdrake
13%inclusion1 decks8 decks
11%synergy
High Fae Trickster
13%inclusion1 decks8 decks
8%synergy
Consecrated Sphinx
13%inclusion1 decks8 decks
6%synergy
Spellseeker
13%inclusion1 decks8 decks
11%synergy
Malevolent Hermit
13%inclusion1 decks8 decks
12%synergy
Pollywog Prodigy
13%inclusion1 decks8 decks
8%synergy
Drannith Magistrate
13%inclusion1 decks8 decks
4%synergy
Neerdiv, Devious Diver
13%inclusion1 decks8 decks
12%synergy
Nezahal, Primal Tide
13%inclusion1 decks8 decks
9%synergy
Instants
Swan Song
88%inclusion7 decks8 decks
68%synergy
Enlightened Tutor
88%inclusion7 decks8 decks
67%synergy
Fierce Guardianship
75%inclusion6 decks8 decks
54%synergy
Pact of Negation
75%inclusion6 decks8 decks
67%synergy
Cabal Ritual
63%inclusion5 decks8 decks
59%synergy
Borne Upon a Wind
63%inclusion5 decks8 decks
58%synergy
Gifts Ungiven
50%inclusion4 decks8 decks
48%synergy
Banishing Knack
50%inclusion4 decks8 decks
50%synergy
Swords to Plowshares
50%inclusion4 decks8 decks
-18%synergy
Cyclonic Rift
50%inclusion4 decks8 decks
25%synergy
Mystical Tutor
50%inclusion4 decks8 decks
38%synergy
Chain of Vapor
38%inclusion3 decks8 decks
34%synergy
An Offer You Can't Refuse
38%inclusion3 decks8 decks
11%synergy
Retraction Helix
38%inclusion3 decks8 decks
37%synergy
Brain Freeze
38%inclusion3 decks8 decks
37%synergy
Darkblast
38%inclusion3 decks8 decks
37%synergy
Into the Flood Maw
38%inclusion3 decks8 decks
34%synergy
Dispel
25%inclusion2 decks8 decks
21%synergy
Ad Nauseam
25%inclusion2 decks8 decks
22%synergy
Ephemerate
13%inclusion1 decks8 decks
8%synergy
Spell Snare
13%inclusion1 decks8 decks
12%synergy
Culling the Weak
13%inclusion1 decks8 decks
11%synergy
Strix Serenade
13%inclusion1 decks8 decks
9%synergy
Rain of Filth
13%inclusion1 decks8 decks
12%synergy
Sink into Stupor
13%inclusion1 decks8 decks
0%synergy
Miscast
13%inclusion1 decks8 decks
11%synergy
Sorceries
Imperial Seal
88%inclusion7 decks8 decks
80%synergy
Sevinne's Reclamation
75%inclusion6 decks8 decks
66%synergy
Lively Dirge
63%inclusion5 decks8 decks
61%synergy
Demonic Counsel
50%inclusion4 decks8 decks
49%synergy
Reanimate
50%inclusion4 decks8 decks
34%synergy
Windfall
25%inclusion2 decks8 decks
11%synergy
Beseech the Mirror
25%inclusion2 decks8 decks
21%synergy
Diabolic Intent
13%inclusion1 decks8 decks
7%synergy
Unmarked Grave
13%inclusion1 decks8 decks
11%synergy
Gitaxian Probe
13%inclusion1 decks8 decks
10%synergy
Yawgmoth's Will
13%inclusion1 decks8 decks
11%synergy
Praetor's Grasp
13%inclusion1 decks8 decks
10%synergy
Toxic Deluge
13%inclusion1 decks8 decks
-7%synergy
Dark Deal
13%inclusion1 decks8 decks
11%synergy
Timetwister
13%inclusion1 decks8 decks
11%synergy
Utility Artifacts
The One Ring
75%inclusion6 decks8 decks
61%synergy
Wishclaw Talisman
63%inclusion5 decks8 decks
54%synergy
Vexing Bauble
25%inclusion2 decks8 decks
23%synergy
Sensei's Divining Top
13%inclusion1 decks8 decks
2%synergy
Agatha's Soul Cauldron
13%inclusion1 decks8 decks
12%synergy
Imposter Mech
13%inclusion1 decks8 decks
11%synergy
Enchantments
Rhystic Study
88%inclusion7 decks8 decks
55%synergy
Chains of Mephistopheles
88%inclusion7 decks8 decks
87%synergy
Steal Enchantment
63%inclusion5 decks8 decks
62%synergy
Blind Obedience
63%inclusion5 decks8 decks
50%synergy
Mirrormade
63%inclusion5 decks8 decks
53%synergy
Copy Artifact
63%inclusion5 decks8 decks
61%synergy
Touch the Spirit Realm
50%inclusion4 decks8 decks
47%synergy
Teval's Judgment
50%inclusion2 decks4 decks
49%synergy
Amphibian Downpour
50%inclusion4 decks8 decks
45%synergy
Static Prison
50%inclusion4 decks8 decks
49%synergy
Counterbalance
38%inclusion3 decks8 decks
36%synergy
The Meathook Massacre
38%inclusion3 decks8 decks
34%synergy
Necropotence
38%inclusion3 decks8 decks
31%synergy
Founding the Third Path
25%inclusion2 decks8 decks
25%synergy
Ripples of Undeath
25%inclusion2 decks8 decks
22%synergy
Monologue Tax
25%inclusion2 decks8 decks
19%synergy
Trouble in Pairs
25%inclusion2 decks8 decks
19%synergy
Waste Not
13%inclusion1 decks8 decks
12%synergy
Black Market Connections
13%inclusion1 decks8 decks
-1%synergy
Planeswalkers
Teferi, Time Raveler
38%inclusion3 decks8 decks
29%synergy
Tezzeret, Cruel Captain
25%inclusion1 decks4 decks
23%synergy
Utility Lands
Otawara, Soaring City
100%inclusion8 decks8 decks
81%synergy
Urza's Saga
25%inclusion2 decks8 decks
13%synergy
Emergence Zone
25%inclusion2 decks8 decks
23%synergy
City of Traitors
25%inclusion2 decks8 decks
24%synergy
Wasteland
13%inclusion1 decks8 decks
12%synergy
Minamo, School at Water's Edge
13%inclusion1 decks8 decks
8%synergy
Phyrexian Tower
13%inclusion1 decks8 decks
9%synergy
Serra's Sanctum
13%inclusion1 decks8 decks
11%synergy
Bazaar of Baghdad
13%inclusion1 decks8 decks
12%synergy
Cephalid Coliseum
13%inclusion1 decks8 decks
9%synergy
Saprazzan Skerry
13%inclusion1 decks8 decks
12%synergy
Mana Artifacts
Arcane Signet
100%inclusion8 decks8 decks
12%synergy
Sol Ring
100%inclusion8 decks8 decks
10%synergy
Lotus Petal
88%inclusion7 decks8 decks
77%synergy
Lion's Eye Diamond
88%inclusion7 decks8 decks
85%synergy
Talisman of Dominance
75%inclusion6 decks8 decks
26%synergy
Mox Opal
75%inclusion6 decks8 decks
66%synergy
Talisman of Progress
63%inclusion5 decks8 decks
20%synergy
Grim Monolith
63%inclusion5 decks8 decks
59%synergy
Fellwar Stone
50%inclusion4 decks8 decks
16%synergy
Mox Amber
25%inclusion2 decks8 decks
19%synergy
Talisman of Hierarchy
25%inclusion2 decks8 decks
-18%synergy
Springleaf Drum
13%inclusion1 decks8 decks
11%synergy
Lands
Tundra
100%inclusion8 decks8 decks
84%synergy
Command Tower
100%inclusion8 decks8 decks
8%synergy
Underground Sea
100%inclusion8 decks8 decks
84%synergy
Godless Shrine
100%inclusion8 decks8 decks
50%synergy
Gemstone Caverns
100%inclusion8 decks8 decks
92%synergy
Scrubland
100%inclusion8 decks8 decks
84%synergy
Mana Confluence
100%inclusion8 decks8 decks
86%synergy
Marsh Flats
100%inclusion8 decks8 decks
64%synergy
Polluted Delta
100%inclusion8 decks8 decks
63%synergy
Hallowed Fountain
100%inclusion8 decks8 decks
51%synergy
City of Brass
100%inclusion8 decks8 decks
85%synergy
Flooded Strand
100%inclusion8 decks8 decks
62%synergy
Bloodstained Mire
100%inclusion8 decks8 decks
89%synergy
Watery Grave
100%inclusion8 decks8 decks
50%synergy
Morphic Pool
88%inclusion7 decks8 decks
53%synergy
Undercity Sewers
75%inclusion6 decks8 decks
61%synergy
Misty Rainforest
75%inclusion6 decks8 decks
64%synergy
Windswept Heath
75%inclusion6 decks8 decks
65%synergy
Verdant Catacombs
75%inclusion6 decks8 decks
65%synergy
Arid Mesa
75%inclusion6 decks8 decks
65%synergy
Scalding Tarn
75%inclusion6 decks8 decks
64%synergy
Exotic Orchard
63%inclusion5 decks8 decks
4%synergy
Vault of Champions
63%inclusion5 decks8 decks
30%synergy
Sea of Clouds
50%inclusion4 decks8 decks
14%synergy
Swamp
25%inclusion2 decks8 decks
-66%synergy
Island
25%inclusion2 decks8 decks
-68%synergy
Meticulous Archive
25%inclusion2 decks8 decks
11%synergy
Starting Town
25%inclusion1 decks4 decks
21%synergy
Gemstone Mine
13%inclusion1 decks8 decks
12%synergy
Shadowy Backstreet
13%inclusion1 decks8 decks
0%synergy
Spire of Industry
13%inclusion1 decks8 decks
4%synergy
Tarnished Citadel
13%inclusion1 decks8 decks
12%synergy
Cavern of Souls
13%inclusion1 decks8 decks
6%synergy
Plains
13%inclusion1 decks8 decks
-79%synergy
Sink into Stupor
13%inclusion1 decks8 decks
0%synergy
Forbidden Orchard
13%inclusion1 decks8 decks
10%synergy
Silent Clearing
13%inclusion1 decks8 decks
10%synergy
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