The Master of Keys (Commander) - Expensive cEDH Mill

The Master of Keys
Rank #300
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
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Utility Lands
Mana Artifacts
Lands
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Exhibition Tidecaller
50%inclusion1 decks2 decks
50%synergy
High Synergy Cards
Dress Down
100%inclusion4 decks4 decks
98%synergy
Necromancy
100%inclusion4 decks4 decks
95%synergy
Tainted Pact
100%inclusion4 decks4 decks
93%synergy
Demonic Consultation
100%inclusion4 decks4 decks
92%synergy
Sevinne's Reclamation
100%inclusion4 decks4 decks
91%synergy
Mirrormade
100%inclusion4 decks4 decks
90%synergy
Silence
100%inclusion4 decks4 decks
90%synergy
Force of Negation
100%inclusion4 decks4 decks
88%synergy
Vampiric Tutor
100%inclusion4 decks4 decks
83%synergy
Swan Song
100%inclusion4 decks4 decks
80%synergy
Top Cards
Dark Ritual
100%inclusion4 decks4 decks
80%synergy
Esper Sentinel
100%inclusion4 decks4 decks
73%synergy
Mystic Remora
100%inclusion4 decks4 decks
79%synergy
Game Changers
Smothering Tithe
100%inclusion4 decks4 decks
69%synergy
Thassa's Oracle
100%inclusion4 decks4 decks
91%synergy
Ancient Tomb
100%inclusion4 decks4 decks
87%synergy
Intuition
100%inclusion4 decks4 decks
98%synergy
Rhystic Study
100%inclusion4 decks4 decks
69%synergy
Mana Vault
100%inclusion4 decks4 decks
91%synergy
Demonic Tutor
100%inclusion4 decks4 decks
80%synergy
Force of Will
100%inclusion4 decks4 decks
88%synergy
Enlightened Tutor
100%inclusion4 decks4 decks
81%synergy
Chrome Mox
100%inclusion4 decks4 decks
91%synergy
Creatures
Lotho, Corrupt Shirriff
75%inclusion3 decks4 decks
58%synergy
Valley Floodcaller
75%inclusion3 decks4 decks
71%synergy
Ranger-Captain of Eos
75%inclusion3 decks4 decks
69%synergy
Hullbreaker Horror
75%inclusion3 decks4 decks
69%synergy
Tataru Taru
75%inclusion3 decks4 decks
67%synergy
Grand Abolisher
75%inclusion3 decks4 decks
61%synergy
Abdel Adrian, Gorion's Ward
75%inclusion3 decks4 decks
73%synergy
Orcish Bowmasters
75%inclusion3 decks4 decks
65%synergy
Wan Shi Tong, Librarian
67%inclusion2 decks3 decks
62%synergy
Opposition Agent
50%inclusion2 decks4 decks
42%synergy
Snapcaster Mage
50%inclusion2 decks4 decks
48%synergy
Hedron Crab
50%inclusion2 decks4 decks
49%synergy
Faerie Mastermind
50%inclusion2 decks4 decks
40%synergy
Mockingbird
50%inclusion2 decks4 decks
46%synergy
Gran-Gran
33%inclusion1 decks3 decks
33%synergy
Voracious Tome-Skimmer
33%inclusion1 decks3 decks
33%synergy
Displacer Kitten
25%inclusion1 decks4 decks
18%synergy
Scrabbling Skullcrab
25%inclusion1 decks4 decks
24%synergy
Starfield Mystic
25%inclusion1 decks4 decks
19%synergy
Gravebreaker Lamia
25%inclusion1 decks4 decks
24%synergy
Bruvac the Grandiloquent
25%inclusion1 decks4 decks
24%synergy
High Fae Trickster
25%inclusion1 decks4 decks
20%synergy
Tishana's Tidebinder
25%inclusion1 decks4 decks
24%synergy
Phyrexian Metamorph
25%inclusion1 decks4 decks
17%synergy
Subtlety
25%inclusion1 decks4 decks
25%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
17%synergy
Doomwake Giant
25%inclusion1 decks4 decks
19%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
Ghostly Pilferer
25%inclusion1 decks4 decks
18%synergy
Instants
Mindbreak Trap
75%inclusion3 decks4 decks
68%synergy
Mental Misstep
75%inclusion3 decks4 decks
68%synergy
An Offer You Can't Refuse
75%inclusion3 decks4 decks
48%synergy
Entomb
75%inclusion3 decks4 decks
68%synergy
Borne Upon a Wind
75%inclusion3 decks4 decks
70%synergy
Fierce Guardianship
75%inclusion3 decks4 decks
55%synergy
Pact of Negation
75%inclusion3 decks4 decks
68%synergy
Mystical Tutor
75%inclusion3 decks4 decks
64%synergy
Brain Freeze
50%inclusion2 decks4 decks
49%synergy
Cabal Ritual
50%inclusion2 decks4 decks
47%synergy
Gifts Ungiven
50%inclusion2 decks4 decks
47%synergy
Darkblast
50%inclusion2 decks4 decks
50%synergy
Flusterstorm
50%inclusion2 decks4 decks
42%synergy
Ad Nauseam
50%inclusion2 decks4 decks
48%synergy
Cyclonic Rift
50%inclusion2 decks4 decks
27%synergy
Deadly Rollick
25%inclusion1 decks4 decks
10%synergy
Orim's Chant
25%inclusion1 decks4 decks
23%synergy
Retraction Helix
25%inclusion1 decks4 decks
24%synergy
Flare of Denial
25%inclusion1 decks4 decks
23%synergy
Swords to Plowshares
25%inclusion1 decks4 decks
-43%synergy
Sink into Stupor
25%inclusion1 decks4 decks
12%synergy
Dispel
25%inclusion1 decks4 decks
22%synergy
Banishing Knack
25%inclusion1 decks4 decks
25%synergy
Mana Drain
25%inclusion1 decks4 decks
8%synergy
Into the Flood Maw
25%inclusion1 decks4 decks
21%synergy
Commandeer
25%inclusion1 decks4 decks
24%synergy
Misdirection
25%inclusion1 decks4 decks
23%synergy
Path to Exile
25%inclusion1 decks4 decks
-17%synergy
Snapback
25%inclusion1 decks4 decks
25%synergy
Sorceries
Imperial Seal
75%inclusion3 decks4 decks
68%synergy
Reanimate
50%inclusion2 decks4 decks
34%synergy
Flash Photography
33%inclusion1 decks3 decks
32%synergy
Windfall
25%inclusion1 decks4 decks
12%synergy
Unmarked Grave
25%inclusion1 decks4 decks
24%synergy
Idyllic Tutor
25%inclusion1 decks4 decks
21%synergy
Yawgmoth's Will
25%inclusion1 decks4 decks
24%synergy
Mnemonic Betrayal
25%inclusion1 decks4 decks
22%synergy
Toxic Deluge
25%inclusion1 decks4 decks
5%synergy
Timetwister
25%inclusion1 decks4 decks
24%synergy
Beseech the Mirror
25%inclusion1 decks4 decks
21%synergy
Maddening Cacophony
25%inclusion1 decks4 decks
24%synergy
Singularity Rupture
25%inclusion1 decks4 decks
23%synergy
Utility Artifacts
The One Ring
75%inclusion3 decks4 decks
62%synergy
Vexing Bauble
25%inclusion1 decks4 decks
23%synergy
Swiftfoot Boots
25%inclusion1 decks4 decks
1%synergy
Enchantments
Counterbalance
75%inclusion3 decks4 decks
73%synergy
Founding the Third Path
75%inclusion3 decks4 decks
75%synergy
Dance of the Dead
75%inclusion3 decks4 decks
73%synergy
Chains of Mephistopheles
75%inclusion3 decks4 decks
75%synergy
Necropotence
75%inclusion3 decks4 decks
68%synergy
Amphibian Downpour
75%inclusion3 decks4 decks
70%synergy
Animate Dead
75%inclusion3 decks4 decks
65%synergy
Tinybones Joins Up
50%inclusion2 decks4 decks
49%synergy
The Meathook Massacre
50%inclusion2 decks4 decks
47%synergy
Blind Obedience
50%inclusion2 decks4 decks
38%synergy
Copy Artifact
50%inclusion2 decks4 decks
49%synergy
Steal Enchantment
50%inclusion2 decks4 decks
49%synergy
Copy Enchantment
50%inclusion2 decks4 decks
45%synergy
Static Prison
50%inclusion2 decks4 decks
50%synergy
Ripples of Undeath
25%inclusion1 decks4 decks
22%synergy
Starfield of Nyx
25%inclusion1 decks4 decks
21%synergy
Sphere of Safety
25%inclusion1 decks4 decks
16%synergy
Monologue Tax
25%inclusion1 decks4 decks
19%synergy
Secret Arcade // Dusty Parlor
25%inclusion1 decks4 decks
20%synergy
Planeswalkers
Teferi, Time Raveler
25%inclusion1 decks4 decks
17%synergy
Utility Lands
Serra's Sanctum
75%inclusion3 decks4 decks
73%synergy
Otawara, Soaring City
75%inclusion3 decks4 decks
56%synergy
City of Traitors
50%inclusion2 decks4 decks
49%synergy
Urza's Saga
25%inclusion1 decks4 decks
13%synergy
Hall of Heliod's Generosity
25%inclusion1 decks4 decks
12%synergy
Mistrise Village
25%inclusion1 decks4 decks
22%synergy
Cabal Coffers
25%inclusion1 decks4 decks
22%synergy
Emergence Zone
25%inclusion1 decks4 decks
23%synergy
Cephalid Coliseum
25%inclusion1 decks4 decks
21%synergy
Urborg, Tomb of Yawgmoth
25%inclusion1 decks4 decks
12%synergy
Mana Artifacts
Arcane Signet
100%inclusion4 decks4 decks
12%synergy
Sol Ring
100%inclusion4 decks4 decks
10%synergy
Mox Diamond
100%inclusion4 decks4 decks
93%synergy
Grim Monolith
75%inclusion3 decks4 decks
72%synergy
Lotus Petal
75%inclusion3 decks4 decks
65%synergy
Mox Opal
75%inclusion3 decks4 decks
67%synergy
Mox Amber
75%inclusion3 decks4 decks
69%synergy
Fellwar Stone
50%inclusion2 decks4 decks
17%synergy
Lion's Eye Diamond
50%inclusion2 decks4 decks
48%synergy
Talisman of Progress
25%inclusion1 decks4 decks
-19%synergy
Talisman of Dominance
25%inclusion1 decks4 decks
-25%synergy
Relic of Legends
25%inclusion1 decks4 decks
19%synergy
Lands
Tundra
100%inclusion4 decks4 decks
84%synergy
Command Tower
100%inclusion4 decks4 decks
7%synergy
Godless Shrine
100%inclusion4 decks4 decks
49%synergy
Underground Sea
100%inclusion4 decks4 decks
84%synergy
Gemstone Caverns
100%inclusion4 decks4 decks
92%synergy
Scrubland
100%inclusion4 decks4 decks
84%synergy
Marsh Flats
100%inclusion4 decks4 decks
64%synergy
Polluted Delta
100%inclusion4 decks4 decks
62%synergy
Flooded Strand
100%inclusion4 decks4 decks
62%synergy
Watery Grave
100%inclusion4 decks4 decks
49%synergy
Morphic Pool
75%inclusion3 decks4 decks
41%synergy
Cavern of Souls
75%inclusion3 decks4 decks
68%synergy
Mana Confluence
75%inclusion3 decks4 decks
61%synergy
Hallowed Fountain
75%inclusion3 decks4 decks
24%synergy
City of Brass
75%inclusion3 decks4 decks
60%synergy
Bloodstained Mire
75%inclusion3 decks4 decks
64%synergy
Starting Town
75%inclusion3 decks4 decks
71%synergy
Undercity Sewers
50%inclusion2 decks4 decks
35%synergy
Misty Rainforest
50%inclusion2 decks4 decks
39%synergy
Windswept Heath
50%inclusion2 decks4 decks
41%synergy
Verdant Catacombs
50%inclusion2 decks4 decks
40%synergy
Arid Mesa
50%inclusion2 decks4 decks
41%synergy
Scalding Tarn
50%inclusion2 decks4 decks
39%synergy
Gemstone Mine
25%inclusion1 decks4 decks
25%synergy
Shadowy Backstreet
25%inclusion1 decks4 decks
12%synergy
Exotic Orchard
25%inclusion1 decks4 decks
-34%synergy
Valgavoth's Lair
25%inclusion1 decks4 decks
22%synergy
Tarnished Citadel
25%inclusion1 decks4 decks
24%synergy
Raffine's Tower
25%inclusion1 decks4 decks
-16%synergy
Sink into Stupor
25%inclusion1 decks4 decks
12%synergy
Swamp
25%inclusion1 decks4 decks
-67%synergy
Gloomlake Verge
25%inclusion1 decks4 decks
14%synergy
Sea of Clouds
25%inclusion1 decks4 decks
-10%synergy
Island
25%inclusion1 decks4 decks
-68%synergy
Meticulous Archive
25%inclusion1 decks4 decks
11%synergy
Vault of Champions
25%inclusion1 decks4 decks
-7%synergy
Floodfarm Verge
25%inclusion1 decks4 decks
14%synergy
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