The Master of Keys (Commander) - Expensive cEDH

The Master of Keys
Rank #305
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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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Utility Lands
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Mornsong Aria
30%inclusion3 decks10 decks
29%synergy
Voracious Tome-Skimmer
10%inclusion1 decks10 decks
9%synergy
High Synergy Cards
Intuition
93%inclusion54 decks58 decks
91%synergy
Necromancy
95%inclusion55 decks58 decks
90%synergy
Entomb
97%inclusion56 decks58 decks
90%synergy
Abdel Adrian, Gorion's Ward
91%inclusion53 decks58 decks
90%synergy
Dance of the Dead
88%inclusion51 decks58 decks
86%synergy
Animate Dead
95%inclusion55 decks58 decks
85%synergy
Dress Down
84%inclusion49 decks58 decks
82%synergy
Thassa's Oracle
91%inclusion53 decks58 decks
82%synergy
Mental Misstep
88%inclusion51 decks58 decks
81%synergy
Mindbreak Trap
88%inclusion51 decks58 decks
81%synergy
Top Cards
Mystic Remora
100%inclusion58 decks58 decks
79%synergy
Esper Sentinel
100%inclusion58 decks58 decks
73%synergy
Dark Ritual
97%inclusion56 decks58 decks
77%synergy
Swan Song
90%inclusion52 decks58 decks
70%synergy
Tainted Pact
88%inclusion51 decks58 decks
81%synergy
Force of Negation
88%inclusion51 decks58 decks
76%synergy
Silence
88%inclusion51 decks58 decks
78%synergy
Orcish Bowmasters
86%inclusion50 decks58 decks
76%synergy
Imperial Seal
84%inclusion49 decks58 decks
77%synergy
Lotho, Corrupt Shirriff
83%inclusion48 decks58 decks
66%synergy
Game Changers
Mana Vault
100%inclusion58 decks58 decks
91%synergy
Force of Will
100%inclusion58 decks58 decks
88%synergy
Enlightened Tutor
98%inclusion57 decks58 decks
79%synergy
Chrome Mox
98%inclusion57 decks58 decks
89%synergy
Vampiric Tutor
98%inclusion57 decks58 decks
81%synergy
Mox Diamond
98%inclusion57 decks58 decks
91%synergy
Ancient Tomb
98%inclusion57 decks58 decks
85%synergy
Demonic Tutor
98%inclusion57 decks58 decks
78%synergy
Rhystic Study
98%inclusion57 decks58 decks
67%synergy
Smothering Tithe
95%inclusion55 decks58 decks
64%synergy
Creatures
Ranger-Captain of Eos
78%inclusion45 decks58 decks
71%synergy
Grand Abolisher
78%inclusion45 decks58 decks
63%synergy
Valley Floodcaller
74%inclusion43 decks58 decks
70%synergy
Wan Shi Tong, Librarian
62%inclusion8 decks13 decks
56%synergy
Voice of Victory
60%inclusion24 decks40 decks
52%synergy
Opposition Agent
55%inclusion32 decks58 decks
47%synergy
Displacer Kitten
50%inclusion29 decks58 decks
43%synergy
Auriok Salvagers
50%inclusion29 decks58 decks
50%synergy
Mockingbird
43%inclusion25 decks58 decks
39%synergy
Archivist of Oghma
43%inclusion25 decks58 decks
37%synergy
Hullbreaker Horror
41%inclusion24 decks58 decks
35%synergy
Lurrus of the Dream-Den
38%inclusion22 decks58 decks
36%synergy
Ledger Shredder
36%inclusion21 decks58 decks
27%synergy
Drannith Magistrate
36%inclusion21 decks58 decks
28%synergy
Faerie Mastermind
29%inclusion17 decks58 decks
20%synergy
Tataru Taru
26%inclusion9 decks34 decks
18%synergy
Hedron Crab
22%inclusion13 decks58 decks
22%synergy
Ghostly Pilferer
21%inclusion12 decks58 decks
13%synergy
Talion, the Kindly Lord
19%inclusion11 decks58 decks
11%synergy
Phyrexian Metamorph
17%inclusion10 decks58 decks
9%synergy
Psychic Frog
17%inclusion10 decks58 decks
10%synergy
Pollywog Prodigy
16%inclusion9 decks58 decks
12%synergy
High Fae Trickster
14%inclusion8 decks56 decks
10%synergy
Snapcaster Mage
12%inclusion7 decks58 decks
10%synergy
Gilded Drake
10%inclusion6 decks58 decks
9%synergy
Emet-Selch of the Third Seat
8.8%inclusion3 decks34 decks
-1%synergy
Malevolent Hermit
8.6%inclusion5 decks58 decks
8%synergy
Gran-Gran
7.7%inclusion1 decks13 decks
8%synergy
Volatile Stormdrake
6.9%inclusion4 decks58 decks
6%synergy
Gravebreaker Lamia
6.9%inclusion4 decks58 decks
6%synergy
Doom Whisperer
6.9%inclusion4 decks58 decks
5%synergy
Leonin Relic-Warder
6.9%inclusion4 decks58 decks
7%synergy
Hoarding Broodlord
5.2%inclusion3 decks58 decks
3%synergy
Scrabbling Skullcrab
5.2%inclusion3 decks58 decks
4%synergy
Zur the Enchanter
5.2%inclusion3 decks58 decks
0%synergy
Dauthi Voidwalker
5.2%inclusion3 decks58 decks
-1%synergy
Instants
Flusterstorm
81%inclusion47 decks58 decks
73%synergy
Pact of Negation
76%inclusion44 decks58 decks
68%synergy
Demonic Consultation
74%inclusion43 decks58 decks
66%synergy
Fierce Guardianship
74%inclusion43 decks58 decks
54%synergy
Borne Upon a Wind
69%inclusion40 decks58 decks
64%synergy
Swords to Plowshares
62%inclusion36 decks58 decks
-6%synergy
Mystical Tutor
60%inclusion35 decks58 decks
49%synergy
Cabal Ritual
59%inclusion34 decks58 decks
55%synergy
An Offer You Can't Refuse
50%inclusion29 decks58 decks
23%synergy
Gifts Ungiven
48%inclusion28 decks58 decks
46%synergy
Cyclonic Rift
47%inclusion27 decks58 decks
23%synergy
Mana Drain
38%inclusion22 decks58 decks
21%synergy
Into the Flood Maw
36%inclusion21 decks58 decks
32%synergy
Darkblast
28%inclusion16 decks58 decks
27%synergy
Sink into Stupor
28%inclusion16 decks58 decks
15%synergy
Chain of Vapor
28%inclusion16 decks58 decks
24%synergy
Retraction Helix
22%inclusion13 decks58 decks
22%synergy
Brain Freeze
21%inclusion12 decks58 decks
20%synergy
Culling the Weak
17%inclusion10 decks58 decks
16%synergy
Ad Nauseam
17%inclusion10 decks58 decks
15%synergy
Banishing Knack
14%inclusion8 decks58 decks
13%synergy
Path to Exile
12%inclusion7 decks58 decks
-30%synergy
Deadly Rollick
12%inclusion7 decks58 decks
-3%synergy
Orim's Chant
10%inclusion6 decks58 decks
9%synergy
Dispel
10%inclusion6 decks58 decks
7%synergy
Lim-Dûl's Vault
8.6%inclusion5 decks58 decks
5%synergy
Muddle the Mixture
6.9%inclusion4 decks58 decks
3%synergy
Spell Pierce
6.9%inclusion4 decks58 decks
4%synergy
Saw in Half
6.9%inclusion4 decks58 decks
5%synergy
Louisoix's Sacrifice
6.7%inclusion2 decks30 decks
6%synergy
Sacrifice
5.2%inclusion3 decks58 decks
5%synergy
Flare of Denial
5.2%inclusion3 decks58 decks
3%synergy
Trickbind
5.2%inclusion3 decks58 decks
4%synergy
Rain of Filth
5.2%inclusion3 decks58 decks
5%synergy
Miscast
5.2%inclusion3 decks58 decks
4%synergy
Sorceries
Sevinne's Reclamation
74%inclusion43 decks58 decks
65%synergy
Beseech the Mirror
36%inclusion21 decks58 decks
32%synergy
Reanimate
34%inclusion20 decks58 decks
18%synergy
Lively Dirge
33%inclusion19 decks58 decks
31%synergy
Windfall
33%inclusion19 decks58 decks
19%synergy
Flash Photography
23%inclusion3 decks13 decks
22%synergy
Toxic Deluge
22%inclusion13 decks58 decks
3%synergy
Demonic Counsel
17%inclusion10 decks58 decks
16%synergy
Yawgmoth's Will
16%inclusion9 decks58 decks
14%synergy
Timetwister
14%inclusion8 decks58 decks
13%synergy
Cabal Therapy
12%inclusion7 decks58 decks
12%synergy
Diabolic Intent
10%inclusion6 decks58 decks
5%synergy
Praetor's Grasp
10%inclusion6 decks58 decks
8%synergy
Transmute Artifact
6.9%inclusion4 decks58 decks
5%synergy
Unmarked Grave
6.9%inclusion4 decks58 decks
6%synergy
Mnemonic Betrayal
6.9%inclusion4 decks58 decks
4%synergy
Gitaxian Probe
5.2%inclusion3 decks58 decks
3%synergy
Grim Tutor
5.2%inclusion3 decks58 decks
1%synergy
Utility Artifacts
The One Ring
71%inclusion41 decks58 decks
58%synergy
Wishclaw Talisman
59%inclusion34 decks58 decks
51%synergy
Vexing Bauble
14%inclusion8 decks58 decks
12%synergy
Mesmeric Orb
8.6%inclusion5 decks58 decks
8%synergy
Sensei's Divining Top
5.2%inclusion3 decks58 decks
-4%synergy
Cursed Totem
5.2%inclusion3 decks58 decks
3%synergy
Altar of the Brood
5.2%inclusion3 decks58 decks
4%synergy
Enchantments
Tinybones Joins Up
74%inclusion43 decks58 decks
73%synergy
Chains of Mephistopheles
66%inclusion38 decks58 decks
65%synergy
Necropotence
62%inclusion36 decks58 decks
55%synergy
Amphibian Downpour
59%inclusion34 decks58 decks
54%synergy
The Meathook Massacre
55%inclusion32 decks58 decks
52%synergy
Copy Artifact
53%inclusion31 decks58 decks
52%synergy
Mirrormade
50%inclusion29 decks58 decks
40%synergy
Ripples of Undeath
48%inclusion28 decks58 decks
46%synergy
Blind Obedience
48%inclusion28 decks58 decks
36%synergy
Static Prison
45%inclusion26 decks58 decks
44%synergy
Steal Enchantment
43%inclusion25 decks58 decks
42%synergy
Touch the Spirit Realm
43%inclusion25 decks58 decks
41%synergy
Counterbalance
29%inclusion17 decks58 decks
28%synergy
Trouble in Pairs
24%inclusion14 decks58 decks
19%synergy
Founding the Third Path
24%inclusion14 decks58 decks
24%synergy
Copy Enchantment
22%inclusion13 decks58 decks
18%synergy
Leyline of Anticipation
16%inclusion9 decks58 decks
11%synergy
Monologue Tax
12%inclusion7 decks58 decks
6%synergy
Aura of Silence
12%inclusion7 decks58 decks
9%synergy
Charitable Levy
10%inclusion6 decks58 decks
10%synergy
Power Artifact
8.6%inclusion5 decks58 decks
8%synergy
Seal of Cleansing
8.6%inclusion5 decks58 decks
7%synergy
Stillness in Motion
7.9%inclusion3 decks38 decks
7%synergy
Teval's Judgment
7.5%inclusion3 decks40 decks
7%synergy
Seal of Removal
5.2%inclusion3 decks58 decks
5%synergy
Second Chance
5.2%inclusion3 decks58 decks
5%synergy
Planeswalkers
Teferi, Time Raveler
45%inclusion26 decks58 decks
37%synergy
Tezzeret, Cruel Captain
7.4%inclusion2 decks27 decks
6%synergy
Utility Lands
Otawara, Soaring City
86%inclusion50 decks58 decks
67%synergy
City of Traitors
41%inclusion24 decks58 decks
40%synergy
Urza's Saga
40%inclusion23 decks58 decks
28%synergy
Emergence Zone
38%inclusion22 decks58 decks
36%synergy
Serra's Sanctum
31%inclusion18 decks58 decks
29%synergy
Cephalid Coliseum
31%inclusion18 decks58 decks
27%synergy
Minamo, School at Water's Edge
29%inclusion17 decks58 decks
25%synergy
Urborg, Tomb of Yawgmoth
14%inclusion8 decks58 decks
1%synergy
Takenuma, Abandoned Mire
12%inclusion7 decks58 decks
6%synergy
Phyrexian Tower
10%inclusion6 decks58 decks
7%synergy
Bazaar of Baghdad
8.6%inclusion5 decks58 decks
8%synergy
Hall of Heliod's Generosity
8.6%inclusion5 decks58 decks
-4%synergy
Mana Artifacts
Sol Ring
100%inclusion58 decks58 decks
10%synergy
Arcane Signet
97%inclusion56 decks58 decks
9%synergy
Lotus Petal
97%inclusion56 decks58 decks
86%synergy
Lion's Eye Diamond
88%inclusion51 decks58 decks
86%synergy
Mox Opal
83%inclusion48 decks58 decks
74%synergy
Talisman of Dominance
71%inclusion41 decks58 decks
21%synergy
Fellwar Stone
67%inclusion39 decks58 decks
34%synergy
Grim Monolith
57%inclusion33 decks58 decks
53%synergy
Talisman of Progress
45%inclusion26 decks58 decks
1%synergy
Mox Amber
38%inclusion22 decks58 decks
32%synergy
Talisman of Hierarchy
24%inclusion14 decks58 decks
-20%synergy
Basalt Monolith
10%inclusion6 decks58 decks
8%synergy
Dimir Signet
5.2%inclusion3 decks58 decks
-26%synergy
Springleaf Drum
5.2%inclusion3 decks58 decks
4%synergy
Azorius Signet
5.2%inclusion3 decks58 decks
-26%synergy
Lands
Underground Sea
100%inclusion58 decks58 decks
84%synergy
Polluted Delta
100%inclusion58 decks58 decks
62%synergy
Tundra
100%inclusion58 decks58 decks
84%synergy
Scrubland
100%inclusion58 decks58 decks
84%synergy
Marsh Flats
100%inclusion58 decks58 decks
64%synergy
Flooded Strand
100%inclusion58 decks58 decks
62%synergy
Command Tower
98%inclusion57 decks58 decks
6%synergy
Watery Grave
97%inclusion56 decks58 decks
46%synergy
Hallowed Fountain
95%inclusion55 decks58 decks
45%synergy
Mana Confluence
91%inclusion53 decks58 decks
78%synergy
Godless Shrine
91%inclusion53 decks58 decks
40%synergy
Gemstone Caverns
91%inclusion53 decks58 decks
84%synergy
City of Brass
90%inclusion52 decks58 decks
75%synergy
Misty Rainforest
84%inclusion49 decks58 decks
74%synergy
Verdant Catacombs
78%inclusion45 decks58 decks
68%synergy
Scalding Tarn
76%inclusion44 decks58 decks
65%synergy
Bloodstained Mire
72%inclusion42 decks58 decks
62%synergy
Morphic Pool
66%inclusion38 decks58 decks
32%synergy
Windswept Heath
62%inclusion36 decks58 decks
52%synergy
Arid Mesa
57%inclusion33 decks58 decks
47%synergy
Exotic Orchard
53%inclusion31 decks58 decks
-5%synergy
Undercity Sewers
48%inclusion28 decks58 decks
34%synergy
Sea of Clouds
47%inclusion27 decks58 decks
11%synergy
Vault of Champions
40%inclusion23 decks58 decks
7%synergy
Starting Town
29%inclusion10 decks34 decks
25%synergy
Island
29%inclusion17 decks58 decks
-64%synergy
Shadowy Backstreet
28%inclusion16 decks58 decks
15%synergy
Sink into Stupor
28%inclusion16 decks58 decks
15%synergy
Swamp
28%inclusion16 decks58 decks
-64%synergy
Cavern of Souls
24%inclusion14 decks58 decks
17%synergy
Meticulous Archive
24%inclusion14 decks58 decks
10%synergy
Plains
17%inclusion10 decks58 decks
-74%synergy
Spire of Industry
12%inclusion7 decks58 decks
4%synergy
Forbidden Orchard
12%inclusion7 decks58 decks
10%synergy
Raffine's Tower
8.6%inclusion5 decks58 decks
-32%synergy
Floodfarm Verge
8.6%inclusion5 decks58 decks
-3%synergy
Underground River
8.6%inclusion5 decks58 decks
-25%synergy
Gloomlake Verge
8.6%inclusion5 decks58 decks
-2%synergy
Caves of Koilos
6.9%inclusion4 decks58 decks
-29%synergy
Talon Gates of Madara
6.9%inclusion4 decks58 decks
6%synergy
Tarnished Citadel
6.9%inclusion4 decks58 decks
6%synergy
Silent Clearing
5.2%inclusion3 decks58 decks
3%synergy
Adarkar Wastes
5.2%inclusion3 decks58 decks
-26%synergy
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