The Master of Keys (Commander) - Expensive cEDH Midrange

The Master of Keys
Rank #295
4decks
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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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Enchantments
Planeswalkers
Utility Lands
Mana Artifacts
Lands
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Dress Down
100%inclusion4 decks4 decks
98%synergy
Necromancy
100%inclusion4 decks4 decks
96%synergy
Tainted Pact
100%inclusion4 decks4 decks
93%synergy
Silence
100%inclusion4 decks4 decks
90%synergy
Force of Negation
100%inclusion4 decks4 decks
88%synergy
Vampiric Tutor
100%inclusion4 decks4 decks
84%synergy
Otawara, Soaring City
100%inclusion4 decks4 decks
81%synergy
Swan Song
100%inclusion4 decks4 decks
80%synergy
Mystic Remora
100%inclusion4 decks4 decks
80%synergy
Dark Ritual
100%inclusion4 decks4 decks
79%synergy
Top Cards
Esper Sentinel
100%inclusion4 decks4 decks
73%synergy
Game Changers
Smothering Tithe
100%inclusion4 decks4 decks
70%synergy
Thassa's Oracle
100%inclusion4 decks4 decks
91%synergy
Grim Monolith
100%inclusion4 decks4 decks
97%synergy
Ancient Tomb
100%inclusion4 decks4 decks
88%synergy
Intuition
100%inclusion4 decks4 decks
98%synergy
Rhystic Study
100%inclusion4 decks4 decks
70%synergy
Mana Vault
100%inclusion4 decks4 decks
92%synergy
Demonic Tutor
100%inclusion4 decks4 decks
80%synergy
Force of Will
100%inclusion4 decks4 decks
88%synergy
Enlightened Tutor
100%inclusion4 decks4 decks
82%synergy
Creatures
Lotho, Corrupt Shirriff
75%inclusion3 decks4 decks
58%synergy
Valley Floodcaller
75%inclusion3 decks4 decks
71%synergy
Mockingbird
75%inclusion3 decks4 decks
71%synergy
Grand Abolisher
75%inclusion3 decks4 decks
60%synergy
Abdel Adrian, Gorion's Ward
75%inclusion3 decks4 decks
73%synergy
Ranger-Captain of Eos
75%inclusion3 decks4 decks
69%synergy
Hullbreaker Horror
75%inclusion3 decks4 decks
69%synergy
Orcish Bowmasters
75%inclusion3 decks4 decks
65%synergy
Archivist of Oghma
50%inclusion2 decks4 decks
44%synergy
Opposition Agent
50%inclusion2 decks4 decks
42%synergy
Faerie Mastermind
50%inclusion2 decks4 decks
40%synergy
Ledger Shredder
50%inclusion2 decks4 decks
41%synergy
Tataru Taru
50%inclusion1 decks2 decks
41%synergy
Gran-Gran
50%inclusion1 decks2 decks
50%synergy
Wan Shi Tong, Librarian
50%inclusion1 decks2 decks
45%synergy
Exhibition Tidecaller
50%inclusion1 decks2 decks
49%synergy
Volatile Stormdrake
25%inclusion1 decks4 decks
24%synergy
Displacer Kitten
25%inclusion1 decks4 decks
18%synergy
Scrabbling Skullcrab
25%inclusion1 decks4 decks
24%synergy
Bruvac the Grandiloquent
25%inclusion1 decks4 decks
24%synergy
Starfield Mystic
25%inclusion1 decks4 decks
19%synergy
Tishana's Tidebinder
25%inclusion1 decks4 decks
24%synergy
Gravebreaker Lamia
25%inclusion1 decks4 decks
24%synergy
Phyrexian Metamorph
25%inclusion1 decks4 decks
17%synergy
Subtlety
25%inclusion1 decks4 decks
25%synergy
Spellseeker
25%inclusion1 decks4 decks
24%synergy
Mesa Enchantress
25%inclusion1 decks4 decks
16%synergy
Fear of Sleep Paralysis
25%inclusion1 decks4 decks
20%synergy
Drannith Magistrate
25%inclusion1 decks4 decks
18%synergy
Doomwake Giant
25%inclusion1 decks4 decks
19%synergy
Nezahal, Primal Tide
25%inclusion1 decks4 decks
21%synergy
Entity Tracker
25%inclusion1 decks4 decks
19%synergy
Ondu Spiritdancer
25%inclusion1 decks4 decks
19%synergy
Clever Impersonator
25%inclusion1 decks4 decks
23%synergy
Auriok Salvagers
25%inclusion1 decks4 decks
25%synergy
Instants
Mental Misstep
75%inclusion3 decks4 decks
69%synergy
Entomb
75%inclusion3 decks4 decks
68%synergy
Mindbreak Trap
75%inclusion3 decks4 decks
69%synergy
Flusterstorm
75%inclusion3 decks4 decks
67%synergy
Demonic Consultation
75%inclusion3 decks4 decks
67%synergy
Chain of Vapor
50%inclusion2 decks4 decks
47%synergy
An Offer You Can't Refuse
50%inclusion2 decks4 decks
22%synergy
Retraction Helix
50%inclusion2 decks4 decks
49%synergy
Brain Freeze
50%inclusion2 decks4 decks
49%synergy
Cabal Ritual
50%inclusion2 decks4 decks
47%synergy
Dispel
50%inclusion2 decks4 decks
47%synergy
Into the Flood Maw
50%inclusion2 decks4 decks
46%synergy
Ad Nauseam
50%inclusion2 decks4 decks
48%synergy
Borne Upon a Wind
50%inclusion2 decks4 decks
45%synergy
Fierce Guardianship
50%inclusion2 decks4 decks
30%synergy
Pact of Negation
50%inclusion2 decks4 decks
43%synergy
Mystical Tutor
50%inclusion2 decks4 decks
40%synergy
Deadly Rollick
25%inclusion1 decks4 decks
9%synergy
Ephemerate
25%inclusion1 decks4 decks
21%synergy
Orim's Chant
25%inclusion1 decks4 decks
23%synergy
Flare of Denial
25%inclusion1 decks4 decks
23%synergy
Darkblast
25%inclusion1 decks4 decks
25%synergy
Banishing Knack
25%inclusion1 decks4 decks
25%synergy
Mana Drain
25%inclusion1 decks4 decks
8%synergy
Commandeer
25%inclusion1 decks4 decks
24%synergy
Swords to Plowshares
25%inclusion1 decks4 decks
-43%synergy
Sink into Stupor
25%inclusion1 decks4 decks
12%synergy
Misdirection
25%inclusion1 decks4 decks
22%synergy
Path to Exile
25%inclusion1 decks4 decks
-17%synergy
Cyclonic Rift
25%inclusion1 decks4 decks
3%synergy
Miscast
25%inclusion1 decks4 decks
24%synergy
Snapback
25%inclusion1 decks4 decks
25%synergy
Sorceries
Windfall
75%inclusion3 decks4 decks
62%synergy
Imperial Seal
75%inclusion3 decks4 decks
68%synergy
Unmarked Grave
50%inclusion2 decks4 decks
49%synergy
Sevinne's Reclamation
50%inclusion2 decks4 decks
41%synergy
Yawgmoth's Will
50%inclusion2 decks4 decks
49%synergy
Reanimate
50%inclusion2 decks4 decks
34%synergy
Toxic Deluge
50%inclusion2 decks4 decks
30%synergy
Timetwister
50%inclusion2 decks4 decks
49%synergy
Singularity Rupture
50%inclusion1 decks2 decks
48%synergy
Flash Photography
50%inclusion1 decks2 decks
49%synergy
Lively Dirge
25%inclusion1 decks4 decks
24%synergy
Gitaxian Probe
25%inclusion1 decks4 decks
23%synergy
Idyllic Tutor
25%inclusion1 decks4 decks
21%synergy
Praetor's Grasp
25%inclusion1 decks4 decks
22%synergy
Demonic Counsel
25%inclusion1 decks4 decks
24%synergy
Mnemonic Betrayal
25%inclusion1 decks4 decks
22%synergy
Dark Deal
25%inclusion1 decks4 decks
24%synergy
Maddening Cacophony
25%inclusion1 decks4 decks
24%synergy
Utility Artifacts
The One Ring
50%inclusion2 decks4 decks
38%synergy
Wishclaw Talisman
25%inclusion1 decks4 decks
18%synergy
Swiftfoot Boots
25%inclusion1 decks4 decks
1%synergy
Imposter Mech
25%inclusion1 decks4 decks
23%synergy
Enchantments
Dance of the Dead
75%inclusion3 decks4 decks
73%synergy
Blind Obedience
75%inclusion3 decks4 decks
63%synergy
Mirrormade
75%inclusion3 decks4 decks
65%synergy
Animate Dead
75%inclusion3 decks4 decks
65%synergy
Counterbalance
50%inclusion2 decks4 decks
48%synergy
Tinybones Joins Up
50%inclusion2 decks4 decks
49%synergy
Copy Artifact
50%inclusion2 decks4 decks
49%synergy
Amphibian Downpour
50%inclusion2 decks4 decks
45%synergy
Monologue Tax
50%inclusion2 decks4 decks
43%synergy
Chains of Mephistopheles
50%inclusion2 decks4 decks
50%synergy
Trouble in Pairs
50%inclusion2 decks4 decks
45%synergy
Waste Not
25%inclusion1 decks4 decks
25%synergy
Founding the Third Path
25%inclusion1 decks4 decks
25%synergy
Ripples of Undeath
25%inclusion1 decks4 decks
22%synergy
Touch the Spirit Realm
25%inclusion1 decks4 decks
23%synergy
Steal Enchantment
25%inclusion1 decks4 decks
24%synergy
Copy Enchantment
25%inclusion1 decks4 decks
20%synergy
Starfield of Nyx
25%inclusion1 decks4 decks
21%synergy
Sphere of Safety
25%inclusion1 decks4 decks
16%synergy
Necropotence
25%inclusion1 decks4 decks
19%synergy
Secret Arcade // Dusty Parlor
25%inclusion1 decks4 decks
21%synergy
Black Market Connections
25%inclusion1 decks4 decks
10%synergy
Planeswalkers
Teferi, Time Raveler
25%inclusion1 decks4 decks
17%synergy
Utility Lands
City of Traitors
75%inclusion3 decks4 decks
74%synergy
Urza's Saga
50%inclusion2 decks4 decks
38%synergy
Phyrexian Tower
25%inclusion1 decks4 decks
21%synergy
Hall of Heliod's Generosity
25%inclusion1 decks4 decks
12%synergy
Serra's Sanctum
25%inclusion1 decks4 decks
23%synergy
Cabal Coffers
25%inclusion1 decks4 decks
22%synergy
Urborg, Tomb of Yawgmoth
25%inclusion1 decks4 decks
12%synergy
Saprazzan Skerry
25%inclusion1 decks4 decks
25%synergy
Mana Artifacts
Arcane Signet
100%inclusion4 decks4 decks
12%synergy
Lotus Petal
100%inclusion4 decks4 decks
90%synergy
Sol Ring
100%inclusion4 decks4 decks
10%synergy
Chrome Mox
100%inclusion4 decks4 decks
91%synergy
Mox Diamond
100%inclusion4 decks4 decks
93%synergy
Talisman of Progress
75%inclusion3 decks4 decks
30%synergy
Mox Amber
50%inclusion2 decks4 decks
44%synergy
Fellwar Stone
50%inclusion2 decks4 decks
17%synergy
Mox Opal
50%inclusion2 decks4 decks
42%synergy
Talisman of Dominance
25%inclusion1 decks4 decks
-25%synergy
Relic of Legends
25%inclusion1 decks4 decks
18%synergy
Springleaf Drum
25%inclusion1 decks4 decks
23%synergy
Lion's Eye Diamond
25%inclusion1 decks4 decks
23%synergy
Lands
Tundra
100%inclusion4 decks4 decks
84%synergy
Command Tower
100%inclusion4 decks4 decks
7%synergy
Underground Sea
100%inclusion4 decks4 decks
84%synergy
Godless Shrine
100%inclusion4 decks4 decks
48%synergy
Gemstone Caverns
100%inclusion4 decks4 decks
93%synergy
Scrubland
100%inclusion4 decks4 decks
84%synergy
Mana Confluence
100%inclusion4 decks4 decks
86%synergy
Marsh Flats
100%inclusion4 decks4 decks
64%synergy
Polluted Delta
100%inclusion4 decks4 decks
62%synergy
City of Brass
100%inclusion4 decks4 decks
85%synergy
Flooded Strand
100%inclusion4 decks4 decks
61%synergy
Watery Grave
100%inclusion4 decks4 decks
48%synergy
Misty Rainforest
75%inclusion3 decks4 decks
64%synergy
Windswept Heath
75%inclusion3 decks4 decks
66%synergy
Morphic Pool
75%inclusion3 decks4 decks
41%synergy
Scalding Tarn
75%inclusion3 decks4 decks
65%synergy
Hallowed Fountain
75%inclusion3 decks4 decks
24%synergy
Bloodstained Mire
75%inclusion3 decks4 decks
64%synergy
Undercity Sewers
50%inclusion2 decks4 decks
35%synergy
Exotic Orchard
50%inclusion2 decks4 decks
-9%synergy
Tarnished Citadel
50%inclusion2 decks4 decks
49%synergy
Sea of Clouds
50%inclusion2 decks4 decks
15%synergy
Verdant Catacombs
50%inclusion2 decks4 decks
40%synergy
Arid Mesa
50%inclusion2 decks4 decks
41%synergy
Vault of Champions
50%inclusion2 decks4 decks
18%synergy
Starting Town
50%inclusion1 decks2 decks
46%synergy
Swamp
25%inclusion1 decks4 decks
-67%synergy
Valgavoth's Lair
25%inclusion1 decks4 decks
23%synergy
Raffine's Tower
25%inclusion1 decks4 decks
-16%synergy
Cavern of Souls
25%inclusion1 decks4 decks
19%synergy
Island
25%inclusion1 decks4 decks
-68%synergy
Sink into Stupor
25%inclusion1 decks4 decks
12%synergy
Gloomlake Verge
25%inclusion1 decks4 decks
14%synergy
Floodfarm Verge
25%inclusion1 decks4 decks
14%synergy
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