The Master of Keys (Commander) - Combo

The Master of Keys
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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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Creatures
Instants
Sorceries
Utility Artifacts
Enchantments
Planeswalkers
Utility Lands
Mana Artifacts
Lands
Back to Top
Noggle the Mind
14%inclusion5 decks37 decks
13%synergy
Does Machines
2.9%inclusion1 decks35 decks
3%synergy
Weather Maker
2.9%inclusion1 decks35 decks
3%synergy
Emptiness
1.6%inclusion1 decks62 decks
1%synergy
High Synergy Cards
Animate Dead
91%inclusion199 decks219 decks
81%synergy
Necromancy
80%inclusion176 decks219 decks
76%synergy
Dress Down
73%inclusion160 decks219 decks
71%synergy
Abdel Adrian, Gorion's Ward
72%inclusion158 decks219 decks
70%synergy
Entomb
74%inclusion162 decks219 decks
67%synergy
Mystic Remora
84%inclusion185 decks219 decks
64%synergy
Dance of the Dead
65%inclusion143 decks219 decks
63%synergy
Sevinne's Reclamation
68%inclusion149 decks219 decks
59%synergy
Ripples of Undeath
53%inclusion117 decks219 decks
51%synergy
Dark Ritual
70%inclusion153 decks219 decks
50%synergy
Top Cards
Esper Sentinel
69%inclusion152 decks219 decks
42%synergy
Swan Song
65%inclusion143 decks219 decks
46%synergy
Swords to Plowshares
64%inclusion141 decks219 decks
-4%synergy
Silence
59%inclusion130 decks219 decks
49%synergy
Blind Obedience
58%inclusion128 decks219 decks
46%synergy
Grand Abolisher
58%inclusion127 decks219 decks
43%synergy
Demonic Consultation
56%inclusion123 decks219 decks
48%synergy
Force of Negation
56%inclusion122 decks219 decks
44%synergy
Orcish Bowmasters
55%inclusion121 decks219 decks
45%synergy
Lotho, Corrupt Shirriff
54%inclusion119 decks219 decks
37%synergy
Game Changers
Rhystic Study
76%inclusion166 decks219 decks
44%synergy
Smothering Tithe
74%inclusion161 decks219 decks
42%synergy
Enlightened Tutor
71%inclusion155 decks219 decks
51%synergy
Demonic Tutor
70%inclusion153 decks219 decks
49%synergy
Vampiric Tutor
66%inclusion145 decks219 decks
49%synergy
Thassa's Oracle
65%inclusion143 decks219 decks
56%synergy
Force of Will
60%inclusion132 decks219 decks
48%synergy
Ancient Tomb
60%inclusion131 decks219 decks
47%synergy
Mana Vault
60%inclusion131 decks219 decks
51%synergy
Chrome Mox
58%inclusion126 decks219 decks
48%synergy
Creatures
Valley Floodcaller
52%inclusion113 decks219 decks
48%synergy
Ranger-Captain of Eos
48%inclusion106 decks219 decks
42%synergy
Displacer Kitten
40%inclusion88 decks219 decks
33%synergy
Hullbreaker Horror
37%inclusion82 decks219 decks
31%synergy
Wan Shi Tong, Librarian
37%inclusion20 decks54 decks
32%synergy
Voice of Victory
33%inclusion45 decks135 decks
25%synergy
Mockingbird
33%inclusion73 decks219 decks
29%synergy
Opposition Agent
32%inclusion71 decks219 decks
24%synergy
Archivist of Oghma
30%inclusion65 decks219 decks
23%synergy
Entity Tracker
28%inclusion61 decks219 decks
22%synergy
Inquisitive Glimmer
26%inclusion57 decks219 decks
19%synergy
Lurrus of the Dream-Den
25%inclusion55 decks219 decks
24%synergy
Drannith Magistrate
24%inclusion53 decks219 decks
16%synergy
Auriok Salvagers
24%inclusion53 decks219 decks
24%synergy
Ledger Shredder
24%inclusion52 decks219 decks
15%synergy
Scrabbling Skullcrab
22%inclusion49 decks219 decks
21%synergy
Mesa Enchantress
21%inclusion47 decks219 decks
12%synergy
Grim Guardian
21%inclusion45 decks219 decks
18%synergy
Gravebreaker Lamia
20%inclusion44 decks219 decks
19%synergy
Hedron Crab
20%inclusion43 decks219 decks
19%synergy
Demon of Fate's Design
19%inclusion42 decks219 decks
14%synergy
Overlord of the Balemurk
19%inclusion41 decks219 decks
17%synergy
Phyrexian Metamorph
19%inclusion41 decks219 decks
10%synergy
Talion, the Kindly Lord
18%inclusion40 decks219 decks
10%synergy
Starfield Mystic
17%inclusion37 decks219 decks
10%synergy
Faerie Mastermind
16%inclusion36 decks219 decks
7%synergy
Fear of Sleep Paralysis
16%inclusion35 decks219 decks
11%synergy
Tataru Taru
16%inclusion17 decks107 decks
8%synergy
Fear of Impostors
16%inclusion34 decks219 decks
14%synergy
Overlord of the Floodpits
15%inclusion32 decks219 decks
11%synergy
Zur the Enchanter
15%inclusion32 decks219 decks
9%synergy
Psychic Frog
15%inclusion32 decks219 decks
8%synergy
Doomwake Giant
14%inclusion30 decks219 decks
8%synergy
Ondu Spiritdancer
14%inclusion30 decks219 decks
7%synergy
Leonin Relic-Warder
13%inclusion29 decks219 decks
13%synergy
Zur, Eternal Schemer
13%inclusion29 decks219 decks
10%synergy
Ghostly Pilferer
12%inclusion27 decks219 decks
5%synergy
Victor, Valgavoth's Seneschal
12%inclusion26 decks219 decks
10%synergy
Ghostly Dancers
11%inclusion25 decks219 decks
9%synergy
Laboratory Maniac
11%inclusion24 decks219 decks
8%synergy
Moon-Blessed Cleric
11%inclusion24 decks219 decks
6%synergy
Pollywog Prodigy
11%inclusion23 decks219 decks
7%synergy
Heliod, the Radiant Dawn
10%inclusion21 decks219 decks
6%synergy
Snapcaster Mage
8.7%inclusion19 decks219 decks
7%synergy
Sage of Mysteries
8.2%inclusion18 decks219 decks
8%synergy
Enduring Curiosity
8.2%inclusion18 decks219 decks
0%synergy
Hoarding Broodlord
7.8%inclusion17 decks219 decks
6%synergy
Gremlin Tamer
7.8%inclusion17 decks219 decks
7%synergy
Balemurk Leech
7.8%inclusion17 decks219 decks
7%synergy
Dauthi Voidwalker
6.8%inclusion15 decks219 decks
1%synergy
Instants
Tainted Pact
54%inclusion118 decks219 decks
47%synergy
Flusterstorm
54%inclusion118 decks219 decks
46%synergy
An Offer You Can't Refuse
49%inclusion107 decks219 decks
22%synergy
Mental Misstep
48%inclusion105 decks219 decks
41%synergy
Fierce Guardianship
48%inclusion105 decks219 decks
27%synergy
Mystical Tutor
48%inclusion105 decks219 decks
37%synergy
Mindbreak Trap
47%inclusion104 decks219 decks
41%synergy
Intuition
47%inclusion102 decks219 decks
45%synergy
Borne Upon a Wind
47%inclusion102 decks219 decks
42%synergy
Pact of Negation
46%inclusion101 decks219 decks
38%synergy
Cyclonic Rift
42%inclusion93 decks219 decks
19%synergy
Cabal Ritual
42%inclusion92 decks219 decks
39%synergy
Sink into Stupor
28%inclusion62 decks219 decks
16%synergy
Gifts Ungiven
28%inclusion61 decks219 decks
25%synergy
Into the Flood Maw
27%inclusion60 decks219 decks
24%synergy
Mana Drain
26%inclusion57 decks219 decks
9%synergy
Chain of Vapor
26%inclusion56 decks219 decks
22%synergy
Counterspell
22%inclusion49 decks219 decks
-19%synergy
Path to Exile
20%inclusion43 decks219 decks
-23%synergy
Dovin's Veto
17%inclusion37 decks219 decks
-9%synergy
Retraction Helix
15%inclusion33 decks219 decks
14%synergy
Brain Freeze
14%inclusion31 decks219 decks
14%synergy
Arcane Denial
12%inclusion27 decks219 decks
-8%synergy
Culling the Weak
12%inclusion26 decks219 decks
10%synergy
Ad Nauseam
11%inclusion25 decks219 decks
9%synergy
Frantic Search
11%inclusion23 decks219 decks
-7%synergy
Brainstorm
10%inclusion22 decks219 decks
-7%synergy
Darkblast
10%inclusion21 decks219 decks
9%synergy
Deadly Rollick
9.1%inclusion20 decks219 decks
-6%synergy
Dispel
8.7%inclusion19 decks219 decks
5%synergy
Banishing Knack
8.7%inclusion19 decks219 decks
8%synergy
Strix Serenade
7.8%inclusion17 decks219 decks
4%synergy
Muddle the Mixture
7.3%inclusion16 decks219 decks
3%synergy
Lim-Dûl's Vault
7.3%inclusion16 decks219 decks
4%synergy
Sacrifice
7.3%inclusion16 decks219 decks
7%synergy
Saw in Half
7.3%inclusion16 decks219 decks
5%synergy
Void Rend
6.8%inclusion15 decks219 decks
-28%synergy
Negate
6.8%inclusion15 decks219 decks
-10%synergy
Fell the Profane
6.4%inclusion14 decks219 decks
-2%synergy
Thirst for Meaning
6.4%inclusion14 decks219 decks
5%synergy
Teferi's Protection
5.9%inclusion13 decks219 decks
-11%synergy
Orim's Chant
5.9%inclusion13 decks219 decks
4%synergy
Waterlogged Teachings
5.5%inclusion12 decks219 decks
1%synergy
Otherworldly Gaze
5.5%inclusion12 decks219 decks
3%synergy
Sorceries
Imperial Seal
47%inclusion102 decks219 decks
39%synergy
Reanimate
35%inclusion77 decks219 decks
19%synergy
Toxic Deluge
32%inclusion69 decks219 decks
12%synergy
Windfall
29%inclusion63 decks219 decks
15%synergy
Lively Dirge
22%inclusion49 decks219 decks
21%synergy
Beseech the Mirror
18%inclusion40 decks219 decks
14%synergy
Demonic Counsel
16%inclusion35 decks219 decks
15%synergy
Unmarked Grave
13%inclusion29 decks219 decks
12%synergy
Mnemonic Betrayal
12%inclusion27 decks219 decks
9%synergy
Singularity Rupture
11%inclusion10 decks89 decks
9%synergy
Diabolic Intent
9.1%inclusion20 decks219 decks
4%synergy
Redress Fate
9.1%inclusion20 decks219 decks
3%synergy
Yawgmoth's Will
8.2%inclusion18 decks219 decks
7%synergy
Cabal Therapy
7.8%inclusion17 decks219 decks
8%synergy
Buried Alive
7.8%inclusion17 decks219 decks
4%synergy
Idyllic Tutor
7.3%inclusion16 decks219 decks
3%synergy
Damn
6.8%inclusion15 decks219 decks
-14%synergy
Supreme Verdict
6.4%inclusion14 decks219 decks
-8%synergy
Dance of the Manse
6.4%inclusion14 decks219 decks
3%synergy
Praetor's Grasp
5.9%inclusion13 decks219 decks
3%synergy
Grim Tutor
5.9%inclusion13 decks219 decks
2%synergy
Glimpse the Unthinkable
5.5%inclusion12 decks219 decks
5%synergy
Gitaxian Probe
5.0%inclusion11 decks219 decks
3%synergy
Extinguish All Hope
5.0%inclusion11 decks219 decks
3%synergy
Utility Artifacts
The One Ring
49%inclusion107 decks219 decks
36%synergy
Wishclaw Talisman
45%inclusion98 decks219 decks
37%synergy
Mesmeric Orb
11%inclusion23 decks219 decks
9%synergy
Cursed Totem
6.8%inclusion15 decks219 decks
5%synergy
Sensei's Divining Top
6.4%inclusion14 decks219 decks
-3%synergy
Cloud Key
5.0%inclusion11 decks219 decks
2%synergy
Isochron Scepter
5.0%inclusion11 decks219 decks
3%synergy
Agatha's Soul Cauldron
5.0%inclusion11 decks219 decks
5%synergy
Enchantments
Necropotence
51%inclusion111 decks219 decks
44%synergy
Tinybones Joins Up
46%inclusion101 decks219 decks
45%synergy
Amphibian Downpour
42%inclusion91 decks219 decks
37%synergy
Mirrormade
40%inclusion87 decks219 decks
30%synergy
Touch the Spirit Realm
39%inclusion86 decks219 decks
37%synergy
The Meathook Massacre
29%inclusion63 decks219 decks
25%synergy
Static Prison
27%inclusion59 decks219 decks
26%synergy
Copy Artifact
22%inclusion48 decks219 decks
21%synergy
Propaganda
21%inclusion45 decks219 decks
-7%synergy
Seal of Cleansing
20%inclusion44 decks219 decks
19%synergy
Sphere of Safety
19%inclusion41 decks219 decks
9%synergy
Grasp of Fate
18%inclusion40 decks219 decks
12%synergy
Stillness in Motion
16%inclusion21 decks130 decks
16%synergy
Secret Arcade // Dusty Parlor
16%inclusion34 decks219 decks
11%synergy
Ghostly Prison
16%inclusion34 decks219 decks
-7%synergy
Founding the Third Path
15%inclusion33 decks219 decks
15%synergy
Copy Enchantment
15%inclusion32 decks219 decks
10%synergy
Chthonian Nightmare
15%inclusion32 decks219 decks
14%synergy
Counterbalance
13%inclusion29 decks219 decks
12%synergy
Estrid's Invocation
13%inclusion29 decks219 decks
9%synergy
Trouble in Pairs
13%inclusion28 decks219 decks
7%synergy
Steal Enchantment
13%inclusion28 decks219 decks
12%synergy
Cemetery Tampering
12%inclusion27 decks219 decks
12%synergy
Monologue Tax
12%inclusion27 decks219 decks
6%synergy
Teval's Judgment
12%inclusion16 decks134 decks
11%synergy
Leyline of Anticipation
11%inclusion25 decks219 decks
7%synergy
Seal of Removal
11%inclusion25 decks219 decks
11%synergy
Out of the Tombs
11%inclusion23 decks219 decks
10%synergy
Starfield of Nyx
10%inclusion21 decks219 decks
6%synergy
The Tale of Tamiyo
10%inclusion21 decks219 decks
9%synergy
Sigil of the Empty Throne
8.7%inclusion19 decks219 decks
3%synergy
Enchanted Evening
8.7%inclusion19 decks219 decks
7%synergy
Aura of Silence
8.2%inclusion18 decks219 decks
5%synergy
Court of Cunning
8.2%inclusion18 decks219 decks
7%synergy
Phyrexian Arena
8.2%inclusion18 decks219 decks
-6%synergy
Darksteel Mutation
7.8%inclusion17 decks219 decks
2%synergy
Greater Auramancy
7.8%inclusion17 decks219 decks
3%synergy
Chains of Mephistopheles
7.8%inclusion17 decks219 decks
8%synergy
Imprisoned in the Moon
7.3%inclusion16 decks219 decks
1%synergy
Cacophony Unleashed
7.3%inclusion16 decks219 decks
6%synergy
Black Market Connections
7.3%inclusion16 decks219 decks
-7%synergy
Nowhere to Run
7.3%inclusion16 decks219 decks
6%synergy
All That Glitters
6.8%inclusion15 decks219 decks
-2%synergy
Authority of the Consuls
6.4%inclusion14 decks219 decks
-6%synergy
Timely Ward
6.4%inclusion14 decks219 decks
1%synergy
Dance of Many
5.9%inclusion13 decks219 decks
6%synergy
Sheltered by Ghosts
5.9%inclusion13 decks219 decks
3%synergy
Defiled Crypt // Cadaver Lab
5.5%inclusion12 decks218 decks
5%synergy
Restricted Office // Lecture Hall
5.5%inclusion12 decks219 decks
3%synergy
Bloodchief Ascension
5.5%inclusion12 decks219 decks
0%synergy
Planeswalkers
Teferi, Time Raveler
38%inclusion83 decks219 decks
30%synergy
Utility Lands
Otawara, Soaring City
62%inclusion136 decks219 decks
43%synergy
Hall of Heliod's Generosity
32%inclusion69 decks219 decks
18%synergy
Urza's Saga
30%inclusion66 decks219 decks
18%synergy
Emergence Zone
22%inclusion48 decks219 decks
20%synergy
Cephalid Coliseum
20%inclusion43 decks219 decks
16%synergy
Bojuka Bog
16%inclusion36 decks219 decks
-11%synergy
Takenuma, Abandoned Mire
16%inclusion35 decks219 decks
10%synergy
Minamo, School at Water's Edge
15%inclusion33 decks219 decks
11%synergy
Serra's Sanctum
10%inclusion22 decks219 decks
8%synergy
Urborg, Tomb of Yawgmoth
8.7%inclusion19 decks219 decks
-4%synergy
City of Traitors
7.3%inclusion16 decks219 decks
6%synergy
Phyrexian Tower
5.9%inclusion13 decks219 decks
2%synergy
Reliquary Tower
5.5%inclusion12 decks219 decks
-28%synergy
Mana Artifacts
Sol Ring
96%inclusion211 decks219 decks
6%synergy
Arcane Signet
94%inclusion206 decks219 decks
6%synergy
Talisman of Dominance
74%inclusion161 decks219 decks
24%synergy
Lotus Petal
59%inclusion130 decks219 decks
49%synergy
Fellwar Stone
59%inclusion129 decks219 decks
25%synergy
Talisman of Progress
56%inclusion123 decks219 decks
13%synergy
Mox Diamond
49%inclusion108 decks219 decks
42%synergy
Mox Opal
46%inclusion101 decks219 decks
38%synergy
Talisman of Hierarchy
42%inclusion92 decks219 decks
-2%synergy
Lion's Eye Diamond
41%inclusion89 decks219 decks
39%synergy
Mox Amber
26%inclusion57 decks219 decks
20%synergy
Grim Monolith
22%inclusion48 decks219 decks
19%synergy
Orzhov Signet
14%inclusion31 decks219 decks
-19%synergy
Dimir Signet
13%inclusion28 decks219 decks
-18%synergy
Azorius Signet
13%inclusion28 decks219 decks
-18%synergy
Mind Stone
6.4%inclusion14 decks219 decks
-6%synergy
Lands
Command Tower
96%inclusion211 decks219 decks
4%synergy
Watery Grave
81%inclusion177 decks219 decks
30%synergy
Hallowed Fountain
80%inclusion175 decks219 decks
30%synergy
Flooded Strand
80%inclusion175 decks219 decks
42%synergy
Godless Shrine
79%inclusion173 decks219 decks
28%synergy
Polluted Delta
79%inclusion172 decks219 decks
41%synergy
Marsh Flats
74%inclusion161 decks219 decks
37%synergy
Island
67%inclusion147 decks219 decks
-26%synergy
Swamp
64%inclusion141 decks219 decks
-27%synergy
Exotic Orchard
63%inclusion139 decks219 decks
5%synergy
City of Brass
59%inclusion129 decks219 decks
44%synergy
Plains
57%inclusion124 decks219 decks
-35%synergy
Tundra
56%inclusion123 decks219 decks
40%synergy
Mana Confluence
56%inclusion123 decks219 decks
42%synergy
Underground Sea
56%inclusion122 decks219 decks
40%synergy
Scrubland
55%inclusion121 decks219 decks
39%synergy
Gemstone Caverns
53%inclusion116 decks219 decks
45%synergy
Bloodstained Mire
53%inclusion116 decks219 decks
42%synergy
Morphic Pool
53%inclusion115 decks219 decks
19%synergy
Misty Rainforest
48%inclusion106 decks219 decks
37%synergy
Undercity Sewers
48%inclusion105 decks219 decks
33%synergy
Verdant Catacombs
48%inclusion105 decks219 decks
38%synergy
Scalding Tarn
48%inclusion105 decks219 decks
37%synergy
Sea of Clouds
47%inclusion102 decks219 decks
11%synergy
Windswept Heath
44%inclusion97 decks219 decks
35%synergy
Vault of Champions
43%inclusion95 decks219 decks
11%synergy
Arid Mesa
39%inclusion86 decks219 decks
30%synergy
Underground River
31%inclusion68 decks219 decks
-3%synergy
Sink into Stupor
28%inclusion62 decks219 decks
16%synergy
Adarkar Wastes
28%inclusion62 decks219 decks
-3%synergy
Caves of Koilos
28%inclusion61 decks219 decks
-8%synergy
Meticulous Archive
26%inclusion57 decks219 decks
12%synergy
Arcane Sanctum
25%inclusion54 decks219 decks
-30%synergy
Raffine's Tower
24%inclusion53 decks219 decks
-17%synergy
Shadowy Backstreet
22%inclusion48 decks219 decks
9%synergy
Glacial Fortress
20%inclusion44 decks219 decks
-21%synergy
Isolated Chapel
16%inclusion35 decks219 decks
-24%synergy
Drowned Catacomb
15%inclusion33 decks219 decks
-22%synergy
Starting Town
15%inclusion16 decks107 decks
11%synergy
Gloomlake Verge
14%inclusion31 decks219 decks
3%synergy
Floodfarm Verge
13%inclusion29 decks219 decks
2%synergy
Contaminated Landscape
12%inclusion27 decks219 decks
-2%synergy
Prairie Stream
12%inclusion26 decks219 decks
-29%synergy
Terramorphic Expanse
11%inclusion25 decks219 decks
-5%synergy
Forbidden Orchard
11%inclusion24 decks219 decks
9%synergy
Shipwreck Marsh
11%inclusion24 decks219 decks
-10%synergy
Valgavoth's Lair
11%inclusion24 decks219 decks
8%synergy
Reflecting Pool
11%inclusion24 decks219 decks
3%synergy
Sunken Hollow
11%inclusion24 decks219 decks
-29%synergy
Tainted Field
11%inclusion23 decks219 decks
4%synergy
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