The Master of Keys (Commander) - Expensive cEDH

The Master of Keys
Rank #316
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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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Enchantments
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Utility Lands
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Wan Shi Tong, Librarian
57%inclusion4 decks7 decks
52%synergy
High Synergy Cards
Abdel Adrian, Gorion's Ward
93%inclusion51 decks55 decks
91%synergy
Necromancy
95%inclusion52 decks55 decks
90%synergy
Entomb
96%inclusion53 decks55 decks
89%synergy
Intuition
91%inclusion50 decks55 decks
89%synergy
Animate Dead
95%inclusion52 decks55 decks
85%synergy
Tainted Pact
91%inclusion50 decks55 decks
83%synergy
Dance of the Dead
85%inclusion47 decks55 decks
83%synergy
Dress Down
84%inclusion46 decks55 decks
81%synergy
Force of Negation
93%inclusion51 decks55 decks
81%synergy
Mental Misstep
87%inclusion48 decks55 decks
80%synergy
Top Cards
Esper Sentinel
100%inclusion55 decks55 decks
72%synergy
Mystic Remora
100%inclusion55 decks55 decks
79%synergy
Dark Ritual
96%inclusion53 decks55 decks
77%synergy
Smothering Tithe
95%inclusion52 decks55 decks
62%synergy
Swan Song
95%inclusion52 decks55 decks
75%synergy
Silence
87%inclusion48 decks55 decks
77%synergy
Orcish Bowmasters
87%inclusion48 decks55 decks
76%synergy
Imperial Seal
85%inclusion47 decks55 decks
78%synergy
Mindbreak Trap
85%inclusion47 decks55 decks
79%synergy
Flusterstorm
84%inclusion46 decks55 decks
75%synergy
Game Changers
Force of Will
100%inclusion55 decks55 decks
87%synergy
Mana Vault
100%inclusion55 decks55 decks
90%synergy
Ancient Tomb
98%inclusion54 decks55 decks
85%synergy
Rhystic Study
98%inclusion54 decks55 decks
66%synergy
Demonic Tutor
98%inclusion54 decks55 decks
77%synergy
Enlightened Tutor
98%inclusion54 decks55 decks
78%synergy
Chrome Mox
98%inclusion54 decks55 decks
88%synergy
Vampiric Tutor
98%inclusion54 decks55 decks
80%synergy
Mox Diamond
98%inclusion54 decks55 decks
91%synergy
Thassa's Oracle
95%inclusion52 decks55 decks
85%synergy
Creatures
Ranger-Captain of Eos
82%inclusion45 decks55 decks
75%synergy
Lotho, Corrupt Shirriff
80%inclusion44 decks55 decks
63%synergy
Grand Abolisher
78%inclusion43 decks55 decks
64%synergy
Valley Floodcaller
73%inclusion40 decks55 decks
68%synergy
Voice of Victory
64%inclusion23 decks36 decks
56%synergy
Displacer Kitten
55%inclusion30 decks55 decks
47%synergy
Opposition Agent
55%inclusion30 decks55 decks
46%synergy
Auriok Salvagers
49%inclusion27 decks55 decks
49%synergy
Mockingbird
45%inclusion25 decks55 decks
41%synergy
Lurrus of the Dream-Den
44%inclusion24 decks55 decks
42%synergy
Ledger Shredder
44%inclusion24 decks55 decks
35%synergy
Archivist of Oghma
42%inclusion23 decks55 decks
35%synergy
Hullbreaker Horror
40%inclusion22 decks55 decks
34%synergy
Drannith Magistrate
36%inclusion20 decks55 decks
28%synergy
Faerie Mastermind
27%inclusion15 decks55 decks
18%synergy
Tataru Taru
27%inclusion8 decks30 decks
18%synergy
Hedron Crab
24%inclusion13 decks55 decks
23%synergy
Phyrexian Metamorph
20%inclusion11 decks55 decks
11%synergy
Ghostly Pilferer
18%inclusion10 decks55 decks
11%synergy
Talion, the Kindly Lord
16%inclusion9 decks55 decks
8%synergy
Psychic Frog
16%inclusion9 decks55 decks
10%synergy
Snapcaster Mage
15%inclusion8 decks55 decks
13%synergy
Pollywog Prodigy
15%inclusion8 decks55 decks
10%synergy
High Fae Trickster
13%inclusion7 decks53 decks
9%synergy
Emet-Selch of the Third Seat
10%inclusion3 decks30 decks
0%synergy
Malevolent Hermit
9.1%inclusion5 decks55 decks
8%synergy
Gilded Drake
9.1%inclusion5 decks55 decks
7%synergy
Volatile Stormdrake
7.3%inclusion4 decks55 decks
6%synergy
Hoarding Broodlord
7.3%inclusion4 decks55 decks
5%synergy
Doom Whisperer
7.3%inclusion4 decks55 decks
6%synergy
Leonin Relic-Warder
7.3%inclusion4 decks55 decks
7%synergy
Dauthi Voidwalker
7.3%inclusion4 decks55 decks
1%synergy
Symbiote Spider-Man
5.9%inclusion1 decks17 decks
5%synergy
Gravebreaker Lamia
5.5%inclusion3 decks55 decks
4%synergy
Scrabbling Skullcrab
5.5%inclusion3 decks55 decks
4%synergy
Overlord of the Balemurk
5.5%inclusion3 decks55 decks
3%synergy
Zur the Enchanter
5.5%inclusion3 decks55 decks
0%synergy
Instants
Demonic Consultation
78%inclusion43 decks55 decks
70%synergy
Pact of Negation
78%inclusion43 decks55 decks
70%synergy
Fierce Guardianship
75%inclusion41 decks55 decks
54%synergy
Swords to Plowshares
65%inclusion36 decks55 decks
-3%synergy
Borne Upon a Wind
65%inclusion36 decks55 decks
61%synergy
Mystical Tutor
56%inclusion31 decks55 decks
45%synergy
Cabal Ritual
55%inclusion30 decks55 decks
51%synergy
Cyclonic Rift
53%inclusion29 decks55 decks
28%synergy
An Offer You Can't Refuse
47%inclusion26 decks55 decks
21%synergy
Gifts Ungiven
45%inclusion25 decks55 decks
43%synergy
Mana Drain
38%inclusion21 decks55 decks
21%synergy
Into the Flood Maw
38%inclusion21 decks55 decks
34%synergy
Chain of Vapor
27%inclusion15 decks55 decks
24%synergy
Darkblast
27%inclusion15 decks55 decks
27%synergy
Sink into Stupor
27%inclusion15 decks55 decks
15%synergy
Retraction Helix
22%inclusion12 decks55 decks
21%synergy
Brain Freeze
18%inclusion10 decks55 decks
18%synergy
Culling the Weak
16%inclusion9 decks55 decks
15%synergy
Ad Nauseam
16%inclusion9 decks55 decks
14%synergy
Banishing Knack
15%inclusion8 decks55 decks
14%synergy
Deadly Rollick
11%inclusion6 decks55 decks
-3%synergy
Spell Pierce
11%inclusion6 decks55 decks
8%synergy
Path to Exile
11%inclusion6 decks55 decks
-31%synergy
Lim-Dûl's Vault
9.1%inclusion5 decks55 decks
6%synergy
Strix Serenade
9.1%inclusion5 decks55 decks
5%synergy
Dispel
9.1%inclusion5 decks55 decks
5%synergy
Louisoix's Sacrifice
7.7%inclusion2 decks26 decks
7%synergy
Muddle the Mixture
7.3%inclusion4 decks55 decks
3%synergy
Flare of Denial
7.3%inclusion4 decks55 decks
5%synergy
Saw in Half
7.3%inclusion4 decks55 decks
5%synergy
Sacrifice
5.5%inclusion3 decks55 decks
5%synergy
Orim's Chant
5.5%inclusion3 decks55 decks
4%synergy
Miscast
5.5%inclusion3 decks55 decks
4%synergy
Sorceries
Sevinne's Reclamation
71%inclusion39 decks55 decks
62%synergy
Lively Dirge
33%inclusion18 decks55 decks
31%synergy
Reanimate
33%inclusion18 decks55 decks
17%synergy
Windfall
31%inclusion17 decks55 decks
17%synergy
Beseech the Mirror
29%inclusion16 decks55 decks
25%synergy
Toxic Deluge
25%inclusion14 decks55 decks
6%synergy
Yawgmoth's Will
16%inclusion9 decks55 decks
15%synergy
Demonic Counsel
16%inclusion9 decks55 decks
15%synergy
Timetwister
11%inclusion6 decks55 decks
10%synergy
Space-Time Anomaly
11%inclusion2 decks19 decks
9%synergy
Diabolic Intent
9.1%inclusion5 decks55 decks
4%synergy
Unmarked Grave
7.3%inclusion4 decks55 decks
6%synergy
Gitaxian Probe
7.3%inclusion4 decks55 decks
5%synergy
Transmute Artifact
7.3%inclusion4 decks55 decks
6%synergy
Cabal Therapy
5.5%inclusion3 decks55 decks
5%synergy
Praetor's Grasp
5.5%inclusion3 decks55 decks
3%synergy
Utility Artifacts
The One Ring
76%inclusion42 decks55 decks
63%synergy
Wishclaw Talisman
58%inclusion32 decks55 decks
50%synergy
Vexing Bauble
15%inclusion8 decks55 decks
13%synergy
Mesmeric Orb
9.1%inclusion5 decks55 decks
8%synergy
Sensei's Divining Top
5.5%inclusion3 decks55 decks
-5%synergy
Cursed Totem
5.5%inclusion3 decks55 decks
3%synergy
Altar of the Brood
5.5%inclusion3 decks55 decks
4%synergy
Enchantments
Tinybones Joins Up
75%inclusion41 decks55 decks
73%synergy
Chains of Mephistopheles
69%inclusion38 decks55 decks
69%synergy
Amphibian Downpour
60%inclusion33 decks55 decks
55%synergy
Copy Artifact
58%inclusion32 decks55 decks
57%synergy
The Meathook Massacre
56%inclusion31 decks55 decks
53%synergy
Ripples of Undeath
55%inclusion30 decks55 decks
52%synergy
Necropotence
55%inclusion30 decks55 decks
48%synergy
Blind Obedience
53%inclusion29 decks55 decks
40%synergy
Mirrormade
47%inclusion26 decks55 decks
37%synergy
Static Prison
45%inclusion25 decks55 decks
45%synergy
Steal Enchantment
44%inclusion24 decks55 decks
43%synergy
Touch the Spirit Realm
42%inclusion23 decks55 decks
39%synergy
Counterbalance
27%inclusion15 decks55 decks
26%synergy
Founding the Third Path
25%inclusion14 decks55 decks
25%synergy
Trouble in Pairs
22%inclusion12 decks55 decks
16%synergy
Copy Enchantment
18%inclusion10 decks55 decks
13%synergy
Monologue Tax
16%inclusion9 decks55 decks
10%synergy
Charitable Levy
11%inclusion6 decks55 decks
11%synergy
Aura of Silence
11%inclusion6 decks55 decks
8%synergy
Leyline of Anticipation
9.1%inclusion5 decks55 decks
5%synergy
Power Artifact
9.1%inclusion5 decks55 decks
9%synergy
Teval's Judgment
8.3%inclusion3 decks36 decks
7%synergy
Seal of Cleansing
7.3%inclusion4 decks55 decks
6%synergy
Stillness in Motion
5.7%inclusion2 decks35 decks
5%synergy
Dance of Many
5.5%inclusion3 decks55 decks
5%synergy
Second Chance
5.5%inclusion3 decks55 decks
5%synergy
Seal of Removal
5.5%inclusion3 decks55 decks
5%synergy
Planeswalkers
Teferi, Time Raveler
49%inclusion27 decks55 decks
41%synergy
Tezzeret, Cruel Captain
8.3%inclusion2 decks24 decks
6%synergy
Utility Lands
Otawara, Soaring City
87%inclusion48 decks55 decks
68%synergy
Urza's Saga
40%inclusion22 decks55 decks
28%synergy
City of Traitors
36%inclusion20 decks55 decks
35%synergy
Emergence Zone
31%inclusion17 decks55 decks
29%synergy
Cephalid Coliseum
31%inclusion17 decks55 decks
27%synergy
Serra's Sanctum
29%inclusion16 decks55 decks
27%synergy
Minamo, School at Water's Edge
29%inclusion16 decks55 decks
25%synergy
Takenuma, Abandoned Mire
11%inclusion6 decks55 decks
4%synergy
Urborg, Tomb of Yawgmoth
11%inclusion6 decks55 decks
-2%synergy
Bazaar of Baghdad
11%inclusion6 decks55 decks
11%synergy
Hall of Heliod's Generosity
7.3%inclusion4 decks55 decks
-6%synergy
Mistrise Village
5.6%inclusion2 decks36 decks
2%synergy
Phyrexian Tower
5.5%inclusion3 decks55 decks
2%synergy
Mana Artifacts
Sol Ring
100%inclusion55 decks55 decks
10%synergy
Arcane Signet
96%inclusion53 decks55 decks
9%synergy
Lotus Petal
96%inclusion53 decks55 decks
86%synergy
Lion's Eye Diamond
89%inclusion49 decks55 decks
87%synergy
Mox Opal
84%inclusion46 decks55 decks
75%synergy
Talisman of Dominance
73%inclusion40 decks55 decks
24%synergy
Fellwar Stone
71%inclusion39 decks55 decks
37%synergy
Grim Monolith
56%inclusion31 decks55 decks
53%synergy
Talisman of Progress
42%inclusion23 decks55 decks
-1%synergy
Mox Amber
42%inclusion23 decks55 decks
36%synergy
Talisman of Hierarchy
22%inclusion12 decks55 decks
-21%synergy
Basalt Monolith
11%inclusion6 decks55 decks
9%synergy
Springleaf Drum
5.5%inclusion3 decks55 decks
4%synergy
Dimir Signet
5.5%inclusion3 decks55 decks
-27%synergy
Lands
Tundra
100%inclusion55 decks55 decks
84%synergy
Underground Sea
100%inclusion55 decks55 decks
84%synergy
Scrubland
100%inclusion55 decks55 decks
84%synergy
Marsh Flats
100%inclusion55 decks55 decks
64%synergy
Polluted Delta
100%inclusion55 decks55 decks
63%synergy
Flooded Strand
100%inclusion55 decks55 decks
62%synergy
Command Tower
98%inclusion54 decks55 decks
6%synergy
Hallowed Fountain
98%inclusion54 decks55 decks
49%synergy
Watery Grave
98%inclusion54 decks55 decks
49%synergy
Godless Shrine
95%inclusion52 decks55 decks
45%synergy
Gemstone Caverns
91%inclusion50 decks55 decks
83%synergy
Mana Confluence
89%inclusion49 decks55 decks
75%synergy
City of Brass
89%inclusion49 decks55 decks
74%synergy
Misty Rainforest
85%inclusion47 decks55 decks
74%synergy
Verdant Catacombs
78%inclusion43 decks55 decks
68%synergy
Scalding Tarn
76%inclusion42 decks55 decks
65%synergy
Bloodstained Mire
75%inclusion41 decks55 decks
63%synergy
Windswept Heath
71%inclusion39 decks55 decks
61%synergy
Morphic Pool
64%inclusion35 decks55 decks
29%synergy
Exotic Orchard
60%inclusion33 decks55 decks
2%synergy
Arid Mesa
58%inclusion32 decks55 decks
48%synergy
Undercity Sewers
51%inclusion28 decks55 decks
37%synergy
Sea of Clouds
47%inclusion26 decks55 decks
11%synergy
Vault of Champions
44%inclusion24 decks55 decks
11%synergy
Island
33%inclusion18 decks55 decks
-60%synergy
Swamp
31%inclusion17 decks55 decks
-60%synergy
Sink into Stupor
27%inclusion15 decks55 decks
15%synergy
Shadowy Backstreet
25%inclusion14 decks55 decks
13%synergy
Cavern of Souls
24%inclusion13 decks55 decks
17%synergy
Meticulous Archive
24%inclusion13 decks55 decks
10%synergy
Starting Town
23%inclusion7 decks30 decks
19%synergy
Plains
20%inclusion11 decks55 decks
-71%synergy
Spire of Industry
11%inclusion6 decks55 decks
2%synergy
Talon Gates of Madara
11%inclusion6 decks55 decks
10%synergy
Raffine's Tower
9.1%inclusion5 decks55 decks
-32%synergy
Underground River
9.1%inclusion5 decks55 decks
-23%synergy
Forbidden Orchard
9.1%inclusion5 decks55 decks
6%synergy
Floodfarm Verge
9.1%inclusion5 decks55 decks
-2%synergy
Caves of Koilos
7.3%inclusion4 decks55 decks
-28%synergy
Gloomlake Verge
7.3%inclusion4 decks55 decks
-4%synergy
Adarkar Wastes
5.5%inclusion3 decks55 decks
-25%synergy
Silent Clearing
5.5%inclusion3 decks55 decks
3%synergy
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