The Master of Keys (Commander) - cEDH

The Master of Keys
Rank #306
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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 Artifacts
Enchantments
Planeswalkers
Utility Lands
Mana Artifacts
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Mornsong Aria
6.9%inclusion2 decks29 decks
6%synergy
Voracious Tome-Skimmer
3.4%inclusion1 decks29 decks
3%synergy
High Synergy Cards
Necromancy
95%inclusion545 decks572 decks
91%synergy
Abdel Adrian, Gorion's Ward
90%inclusion517 decks572 decks
89%synergy
Entomb
95%inclusion545 decks572 decks
88%synergy
Animate Dead
98%inclusion559 decks572 decks
88%synergy
Dance of the Dead
89%inclusion508 decks572 decks
87%synergy
Dress Down
87%inclusion498 decks572 decks
85%synergy
Tainted Pact
91%inclusion521 decks572 decks
84%synergy
Silence
93%inclusion530 decks572 decks
82%synergy
Demonic Consultation
89%inclusion508 decks572 decks
80%synergy
Flusterstorm
88%inclusion504 decks572 decks
80%synergy
Top Cards
Mystic Remora
98%inclusion560 decks572 decks
77%synergy
Esper Sentinel
95%inclusion545 decks572 decks
68%synergy
Dark Ritual
94%inclusion538 decks572 decks
75%synergy
Swan Song
90%inclusion513 decks572 decks
70%synergy
Orcish Bowmasters
89%inclusion511 decks572 decks
78%synergy
Grand Abolisher
88%inclusion505 decks572 decks
74%synergy
Force of Negation
86%inclusion492 decks572 decks
74%synergy
Mindbreak Trap
86%inclusion490 decks572 decks
79%synergy
The One Ring
81%inclusion466 decks572 decks
68%synergy
Intuition
81%inclusion462 decks572 decks
79%synergy
Game Changers
Rhystic Study
97%inclusion556 decks572 decks
65%synergy
Demonic Tutor
97%inclusion553 decks572 decks
75%synergy
Vampiric Tutor
96%inclusion551 decks572 decks
79%synergy
Thassa's Oracle
95%inclusion546 decks572 decks
86%synergy
Enlightened Tutor
95%inclusion545 decks572 decks
75%synergy
Mana Vault
95%inclusion543 decks572 decks
86%synergy
Chrome Mox
94%inclusion535 decks572 decks
84%synergy
Force of Will
93%inclusion533 decks572 decks
80%synergy
Smothering Tithe
92%inclusion527 decks572 decks
60%synergy
Ancient Tomb
91%inclusion521 decks572 decks
78%synergy
Creatures
Ranger-Captain of Eos
80%inclusion456 decks572 decks
73%synergy
Lotho, Corrupt Shirriff
78%inclusion447 decks572 decks
61%synergy
Valley Floodcaller
74%inclusion423 decks572 decks
70%synergy
Opposition Agent
59%inclusion335 decks572 decks
50%synergy
Displacer Kitten
56%inclusion323 decks572 decks
49%synergy
Voice of Victory
53%inclusion174 decks331 decks
44%synergy
Wan Shi Tong, Librarian
49%inclusion40 decks82 decks
43%synergy
Hullbreaker Horror
48%inclusion272 decks572 decks
41%synergy
Archivist of Oghma
44%inclusion250 decks572 decks
37%synergy
Drannith Magistrate
43%inclusion246 decks572 decks
35%synergy
Mockingbird
41%inclusion236 decks572 decks
37%synergy
Auriok Salvagers
38%inclusion220 decks572 decks
38%synergy
Lurrus of the Dream-Den
38%inclusion216 decks572 decks
36%synergy
Ledger Shredder
33%inclusion187 decks572 decks
24%synergy
Talion, the Kindly Lord
27%inclusion154 decks572 decks
19%synergy
Phyrexian Metamorph
26%inclusion151 decks572 decks
18%synergy
Tataru Taru
25%inclusion59 decks238 decks
16%synergy
Faerie Mastermind
23%inclusion129 decks572 decks
13%synergy
Hedron Crab
23%inclusion129 decks572 decks
22%synergy
Pollywog Prodigy
21%inclusion118 decks572 decks
17%synergy
Psychic Frog
20%inclusion117 decks572 decks
14%synergy
Dauthi Voidwalker
14%inclusion80 decks572 decks
8%synergy
Ghostly Pilferer
12%inclusion70 decks572 decks
5%synergy
Hoarding Broodlord
12%inclusion68 decks572 decks
10%synergy
Leonin Relic-Warder
11%inclusion61 decks572 decks
10%synergy
Volatile Stormdrake
9.3%inclusion53 decks572 decks
8%synergy
High Fae Trickster
8.9%inclusion44 decks493 decks
4%synergy
Snapcaster Mage
8.0%inclusion46 decks572 decks
6%synergy
Gilded Drake
6.5%inclusion37 decks572 decks
5%synergy
Emet-Selch of the Third Seat
5.9%inclusion14 decks238 decks
-4%synergy
Spellseeker
5.2%inclusion30 decks572 decks
4%synergy
Phantasmal Image
5.2%inclusion30 decks572 decks
3%synergy
Entity Tracker
5.1%inclusion29 decks572 decks
-1%synergy
Overlord of the Balemurk
5.1%inclusion29 decks572 decks
3%synergy
Instants
Mental Misstep
80%inclusion458 decks572 decks
73%synergy
Pact of Negation
80%inclusion458 decks572 decks
72%synergy
Swords to Plowshares
79%inclusion453 decks572 decks
11%synergy
Fierce Guardianship
72%inclusion414 decks572 decks
52%synergy
Borne Upon a Wind
71%inclusion407 decks572 decks
66%synergy
Mystical Tutor
68%inclusion387 decks572 decks
56%synergy
An Offer You Can't Refuse
62%inclusion356 decks572 decks
35%synergy
Cyclonic Rift
59%inclusion335 decks572 decks
34%synergy
Cabal Ritual
56%inclusion322 decks572 decks
53%synergy
Into the Flood Maw
41%inclusion232 decks572 decks
37%synergy
Chain of Vapor
40%inclusion231 decks572 decks
37%synergy
Gifts Ungiven
34%inclusion195 decks572 decks
32%synergy
Mana Drain
34%inclusion192 decks572 decks
16%synergy
Sink into Stupor
30%inclusion174 decks572 decks
18%synergy
Ad Nauseam
21%inclusion119 decks572 decks
18%synergy
Retraction Helix
20%inclusion113 decks572 decks
19%synergy
Path to Exile
18%inclusion101 decks572 decks
-24%synergy
Culling the Weak
18%inclusion101 decks572 decks
16%synergy
Brain Freeze
14%inclusion79 decks572 decks
13%synergy
Darkblast
13%inclusion72 decks572 decks
12%synergy
Banishing Knack
12%inclusion71 decks572 decks
12%synergy
Dispel
11%inclusion65 decks572 decks
8%synergy
Saw in Half
10%inclusion59 decks572 decks
8%synergy
Strix Serenade
9.3%inclusion53 decks572 decks
6%synergy
Deadly Rollick
8.9%inclusion51 decks572 decks
-5%synergy
Sacrifice
7.5%inclusion43 decks572 decks
7%synergy
Muddle the Mixture
7.3%inclusion42 decks572 decks
3%synergy
Lim-Dûl's Vault
6.3%inclusion36 decks572 decks
3%synergy
Spell Pierce
6.3%inclusion36 decks572 decks
4%synergy
Orim's Chant
5.9%inclusion34 decks572 decks
5%synergy
Dovin's Veto
5.2%inclusion30 decks572 decks
-20%synergy
Angel's Grace
5.2%inclusion30 decks572 decks
2%synergy
Dismember
5.2%inclusion30 decks572 decks
-1%synergy
Rain of Filth
5.1%inclusion29 decks572 decks
5%synergy
Counterspell
5.1%inclusion29 decks572 decks
-36%synergy
Sorceries
Imperial Seal
77%inclusion443 decks572 decks
70%synergy
Sevinne's Reclamation
71%inclusion407 decks572 decks
62%synergy
Toxic Deluge
39%inclusion223 decks572 decks
19%synergy
Reanimate
36%inclusion208 decks572 decks
20%synergy
Windfall
29%inclusion167 decks572 decks
16%synergy
Beseech the Mirror
26%inclusion146 decks572 decks
21%synergy
Lively Dirge
25%inclusion144 decks572 decks
24%synergy
Mnemonic Betrayal
22%inclusion125 decks572 decks
19%synergy
Demonic Counsel
18%inclusion103 decks572 decks
17%synergy
Unmarked Grave
10%inclusion60 decks572 decks
9%synergy
Yawgmoth's Will
10%inclusion56 decks572 decks
8%synergy
Cabal Therapy
9.1%inclusion52 decks572 decks
9%synergy
Praetor's Grasp
8.9%inclusion51 decks572 decks
6%synergy
Diabolic Intent
8.2%inclusion47 decks572 decks
3%synergy
Utility Artifacts
Wishclaw Talisman
71%inclusion405 decks572 decks
63%synergy
Cursed Totem
11%inclusion65 decks572 decks
9%synergy
Mesmeric Orb
9.1%inclusion52 decks572 decks
8%synergy
Vexing Bauble
7.5%inclusion43 decks572 decks
6%synergy
Sensei's Divining Top
5.1%inclusion29 decks572 decks
-5%synergy
Enchantments
Necropotence
68%inclusion387 decks572 decks
61%synergy
Tinybones Joins Up
68%inclusion387 decks572 decks
66%synergy
Blind Obedience
64%inclusion364 decks572 decks
51%synergy
Amphibian Downpour
52%inclusion298 decks572 decks
48%synergy
Ripples of Undeath
51%inclusion294 decks572 decks
49%synergy
Touch the Spirit Realm
42%inclusion242 decks572 decks
40%synergy
Copy Artifact
42%inclusion240 decks572 decks
41%synergy
Mirrormade
37%inclusion213 decks572 decks
27%synergy
The Meathook Massacre
36%inclusion208 decks572 decks
33%synergy
Static Prison
36%inclusion207 decks572 decks
36%synergy
Steal Enchantment
29%inclusion165 decks572 decks
28%synergy
Counterbalance
19%inclusion109 decks572 decks
17%synergy
Trouble in Pairs
18%inclusion101 decks572 decks
12%synergy
Founding the Third Path
16%inclusion93 decks572 decks
16%synergy
Copy Enchantment
13%inclusion72 decks572 decks
8%synergy
Chthonian Nightmare
12%inclusion66 decks572 decks
11%synergy
Chains of Mephistopheles
12%inclusion66 decks572 decks
11%synergy
Monologue Tax
9.1%inclusion52 decks572 decks
3%synergy
Seal of Removal
8.4%inclusion48 decks572 decks
8%synergy
Leyline of Anticipation
7.3%inclusion42 decks572 decks
3%synergy
Seal of Cleansing
5.9%inclusion34 decks572 decks
4%synergy
Aura of Silence
5.8%inclusion33 decks572 decks
3%synergy
Second Chance
5.1%inclusion29 decks572 decks
5%synergy
Planeswalkers
Teferi, Time Raveler
55%inclusion313 decks572 decks
46%synergy
Tezzeret, Cruel Captain
5.0%inclusion9 decks179 decks
3%synergy
Utility Lands
Otawara, Soaring City
87%inclusion498 decks572 decks
68%synergy
Urza's Saga
39%inclusion225 decks572 decks
27%synergy
Minamo, School at Water's Edge
32%inclusion185 decks572 decks
28%synergy
Emergence Zone
28%inclusion160 decks572 decks
26%synergy
Cephalid Coliseum
20%inclusion116 decks572 decks
17%synergy
City of Traitors
15%inclusion85 decks572 decks
14%synergy
Serra's Sanctum
12%inclusion68 decks572 decks
10%synergy
Takenuma, Abandoned Mire
11%inclusion63 decks572 decks
5%synergy
Urborg, Tomb of Yawgmoth
8.6%inclusion49 decks572 decks
-5%synergy
Hall of Heliod's Generosity
6.5%inclusion37 decks572 decks
-7%synergy
Mistrise Village
5.8%inclusion19 decks328 decks
2%synergy
Mana Artifacts
Sol Ring
99%inclusion569 decks572 decks
10%synergy
Arcane Signet
98%inclusion558 decks572 decks
10%synergy
Lotus Petal
94%inclusion535 decks572 decks
83%synergy
Talisman of Dominance
85%inclusion487 decks572 decks
36%synergy
Mox Diamond
83%inclusion475 decks572 decks
76%synergy
Fellwar Stone
82%inclusion468 decks572 decks
48%synergy
Mox Opal
79%inclusion452 decks572 decks
70%synergy
Lion's Eye Diamond
67%inclusion385 decks572 decks
65%synergy
Talisman of Progress
56%inclusion319 decks572 decks
12%synergy
Mox Amber
40%inclusion231 decks572 decks
34%synergy
Talisman of Hierarchy
40%inclusion226 decks572 decks
-4%synergy
Grim Monolith
36%inclusion205 decks572 decks
32%synergy
Basalt Monolith
6.8%inclusion39 decks572 decks
5%synergy
Lands
Command Tower
98%inclusion559 decks572 decks
5%synergy
Polluted Delta
96%inclusion549 decks572 decks
58%synergy
Watery Grave
96%inclusion549 decks572 decks
46%synergy
Hallowed Fountain
95%inclusion544 decks572 decks
46%synergy
Flooded Strand
94%inclusion539 decks572 decks
56%synergy
Godless Shrine
94%inclusion536 decks572 decks
43%synergy
Marsh Flats
93%inclusion534 decks572 decks
57%synergy
City of Brass
88%inclusion505 decks572 decks
73%synergy
Gemstone Caverns
88%inclusion501 decks572 decks
80%synergy
Mana Confluence
87%inclusion499 decks572 decks
73%synergy
Tundra
86%inclusion490 decks572 decks
70%synergy
Scrubland
85%inclusion489 decks572 decks
69%synergy
Underground Sea
83%inclusion475 decks572 decks
67%synergy
Misty Rainforest
82%inclusion469 decks572 decks
71%synergy
Bloodstained Mire
81%inclusion466 decks572 decks
70%synergy
Verdant Catacombs
78%inclusion449 decks572 decks
68%synergy
Scalding Tarn
75%inclusion428 decks572 decks
64%synergy
Windswept Heath
71%inclusion405 decks572 decks
61%synergy
Exotic Orchard
70%inclusion401 decks572 decks
11%synergy
Morphic Pool
68%inclusion388 decks572 decks
34%synergy
Arid Mesa
63%inclusion359 decks572 decks
53%synergy
Undercity Sewers
57%inclusion324 decks572 decks
42%synergy
Sea of Clouds
55%inclusion313 decks572 decks
19%synergy
Vault of Champions
47%inclusion269 decks572 decks
14%synergy
Island
44%inclusion254 decks572 decks
-48%synergy
Swamp
38%inclusion218 decks572 decks
-53%synergy
Sink into Stupor
30%inclusion174 decks572 decks
18%synergy
Plains
29%inclusion164 decks572 decks
-63%synergy
Starting Town
27%inclusion65 decks238 decks
23%synergy
Meticulous Archive
25%inclusion141 decks572 decks
11%synergy
Forbidden Orchard
20%inclusion116 decks572 decks
18%synergy
Spire of Industry
19%inclusion109 decks572 decks
11%synergy
Shadowy Backstreet
18%inclusion105 decks572 decks
6%synergy
Cavern of Souls
17%inclusion100 decks572 decks
11%synergy
Underground River
15%inclusion86 decks572 decks
-18%synergy
Talon Gates of Madara
12%inclusion69 decks572 decks
11%synergy
Caves of Koilos
10%inclusion59 decks572 decks
-25%synergy
Adarkar Wastes
10%inclusion58 decks572 decks
-21%synergy
Gloomlake Verge
8.4%inclusion48 decks572 decks
-3%synergy
Raffine's Tower
8.2%inclusion47 decks572 decks
-33%synergy
Floodfarm Verge
7.2%inclusion41 decks572 decks
-4%synergy
Reflecting Pool
5.6%inclusion32 decks572 decks
-2%synergy
Silent Clearing
5.2%inclusion30 decks572 decks
3%synergy
Snow-Covered Swamp
5.1%inclusion29 decks572 decks
2%synergy
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