The Master of Keys (Commander) - Optimized Combo

The Master of Keys
Rank #301
43decks
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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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Sorceries
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Enchantments
Planeswalkers
Utility Lands
Mana Artifacts
Lands
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Animate Dead
88%inclusion38 decks43 decks
79%synergy
Necromancy
81%inclusion35 decks43 decks
77%synergy
Abdel Adrian, Gorion's Ward
77%inclusion33 decks43 decks
75%synergy
Entomb
67%inclusion29 decks43 decks
61%synergy
Ripples of Undeath
63%inclusion27 decks43 decks
60%synergy
Mystic Remora
79%inclusion34 decks43 decks
59%synergy
Sevinne's Reclamation
60%inclusion26 decks43 decks
52%synergy
Dress Down
51%inclusion22 decks43 decks
49%synergy
Dance of the Dead
47%inclusion20 decks43 decks
44%synergy
The Meathook Massacre
44%inclusion19 decks43 decks
41%synergy
Top Cards
Swords to Plowshares
63%inclusion27 decks43 decks
-5%synergy
Dark Ritual
58%inclusion25 decks43 decks
38%synergy
Esper Sentinel
58%inclusion25 decks43 decks
31%synergy
Swan Song
49%inclusion21 decks43 decks
29%synergy
An Offer You Can't Refuse
47%inclusion20 decks43 decks
19%synergy
Blind Obedience
44%inclusion19 decks43 decks
32%synergy
Amphibian Downpour
42%inclusion18 decks43 decks
37%synergy
Toxic Deluge
42%inclusion18 decks43 decks
22%synergy
Inquisitive Glimmer
40%inclusion17 decks43 decks
32%synergy
Silence
40%inclusion17 decks43 decks
30%synergy
Game Changers
Rhystic Study
74%inclusion32 decks43 decks
44%synergy
Smothering Tithe
65%inclusion28 decks43 decks
35%synergy
Enlightened Tutor
63%inclusion27 decks43 decks
44%synergy
Demonic Tutor
60%inclusion26 decks43 decks
40%synergy
Vampiric Tutor
58%inclusion25 decks43 decks
42%synergy
Thassa's Oracle
53%inclusion23 decks43 decks
45%synergy
Ancient Tomb
47%inclusion20 decks43 decks
34%synergy
Necropotence
47%inclusion20 decks43 decks
40%synergy
Force of Will
44%inclusion19 decks43 decks
32%synergy
The One Ring
42%inclusion18 decks43 decks
29%synergy
Creatures
Entity Tracker
40%inclusion17 decks43 decks
34%synergy
Lotho, Corrupt Shirriff
37%inclusion16 decks43 decks
20%synergy
Orcish Bowmasters
35%inclusion15 decks43 decks
25%synergy
Ledger Shredder
33%inclusion14 decks43 decks
24%synergy
Valley Floodcaller
30%inclusion13 decks43 decks
26%synergy
Grand Abolisher
30%inclusion13 decks43 decks
16%synergy
Hullbreaker Horror
30%inclusion13 decks43 decks
24%synergy
Displacer Kitten
28%inclusion12 decks43 decks
21%synergy
Scrabbling Skullcrab
28%inclusion12 decks43 decks
27%synergy
Opposition Agent
26%inclusion11 decks43 decks
18%synergy
Lurrus of the Dream-Den
26%inclusion11 decks43 decks
24%synergy
Demon of Fate's Design
26%inclusion11 decks43 decks
20%synergy
Fear of Impostors
26%inclusion11 decks43 decks
24%synergy
Overlord of the Balemurk
26%inclusion11 decks43 decks
24%synergy
Mesa Enchantress
26%inclusion11 decks43 decks
17%synergy
Grim Guardian
26%inclusion11 decks43 decks
23%synergy
Gravebreaker Lamia
23%inclusion10 decks43 decks
22%synergy
Hedron Crab
23%inclusion10 decks43 decks
23%synergy
Voice of Victory
23%inclusion9 decks40 decks
14%synergy
Starfield Mystic
21%inclusion9 decks43 decks
15%synergy
Overlord of the Floodpits
21%inclusion9 decks43 decks
18%synergy
Talion, the Kindly Lord
21%inclusion9 decks43 decks
14%synergy
Mockingbird
21%inclusion9 decks43 decks
17%synergy
Archivist of Oghma
19%inclusion8 decks43 decks
12%synergy
Leonin Relic-Warder
19%inclusion8 decks43 decks
18%synergy
Faerie Mastermind
19%inclusion8 decks43 decks
9%synergy
Ranger-Captain of Eos
19%inclusion8 decks43 decks
13%synergy
Zur, Eternal Schemer
19%inclusion8 decks43 decks
15%synergy
Psychic Frog
19%inclusion8 decks43 decks
11%synergy
Wan Shi Tong, Librarian
18%inclusion4 decks22 decks
13%synergy
Enduring Curiosity
16%inclusion7 decks43 decks
8%synergy
Laboratory Maniac
16%inclusion7 decks43 decks
13%synergy
Ondu Spiritdancer
16%inclusion7 decks43 decks
10%synergy
Ghostly Pilferer
16%inclusion7 decks43 decks
9%synergy
Hoarding Broodlord
14%inclusion6 decks43 decks
12%synergy
Snapcaster Mage
14%inclusion6 decks43 decks
12%synergy
Moon-Blessed Cleric
14%inclusion6 decks43 decks
9%synergy
Victor, Valgavoth's Seneschal
14%inclusion6 decks43 decks
12%synergy
Fear of Sleep Paralysis
14%inclusion6 decks43 decks
9%synergy
Gremlin Tamer
14%inclusion6 decks43 decks
13%synergy
Exhibition Tidecaller
13%inclusion2 decks15 decks
13%synergy
Phyrexian Metamorph
12%inclusion5 decks43 decks
4%synergy
Drannith Magistrate
12%inclusion5 decks43 decks
4%synergy
Heliod, the Radiant Dawn
12%inclusion5 decks43 decks
8%synergy
Witch Enchanter
9.3%inclusion4 decks43 decks
2%synergy
Sheoldred, the Apocalypse
9.3%inclusion4 decks43 decks
0%synergy
Cephalid Illusionist
9.3%inclusion4 decks43 decks
9%synergy
Walking Ballista
9.3%inclusion4 decks43 decks
7%synergy
Heliod, Sun-Crowned
9.3%inclusion4 decks43 decks
6%synergy
Soaring Lightbringer
9.3%inclusion4 decks43 decks
5%synergy
Instants
Cyclonic Rift
40%inclusion17 decks43 decks
17%synergy
Mystical Tutor
40%inclusion17 decks43 decks
29%synergy
Force of Negation
37%inclusion16 decks43 decks
26%synergy
Sink into Stupor
37%inclusion16 decks43 decks
24%synergy
Path to Exile
35%inclusion15 decks43 decks
-7%synergy
Demonic Consultation
33%inclusion14 decks43 decks
25%synergy
Gifts Ungiven
30%inclusion13 decks43 decks
28%synergy
Counterspell
30%inclusion13 decks43 decks
-12%synergy
Fierce Guardianship
30%inclusion13 decks43 decks
10%synergy
Cabal Ritual
28%inclusion12 decks43 decks
25%synergy
Mana Drain
28%inclusion12 decks43 decks
11%synergy
Flusterstorm
26%inclusion11 decks43 decks
18%synergy
Teferi's Protection
23%inclusion10 decks43 decks
7%synergy
Tainted Pact
23%inclusion10 decks43 decks
17%synergy
Dovin's Veto
21%inclusion9 decks43 decks
-5%synergy
Brainstorm
21%inclusion9 decks43 decks
4%synergy
Into the Flood Maw
21%inclusion9 decks43 decks
17%synergy
Arcane Denial
21%inclusion9 decks43 decks
1%synergy
Borne Upon a Wind
21%inclusion9 decks43 decks
16%synergy
Pact of Negation
21%inclusion9 decks43 decks
14%synergy
Deadly Rollick
19%inclusion8 decks43 decks
3%synergy
Void Rend
19%inclusion8 decks43 decks
-16%synergy
Mental Misstep
16%inclusion7 decks43 decks
10%synergy
Intuition
16%inclusion7 decks43 decks
15%synergy
Muddle the Mixture
14%inclusion6 decks43 decks
10%synergy
Frantic Search
14%inclusion6 decks43 decks
-5%synergy
Retraction Helix
14%inclusion6 decks43 decks
13%synergy
Mindbreak Trap
14%inclusion6 decks43 decks
7%synergy
Brain Freeze
12%inclusion5 decks43 decks
11%synergy
Culling the Weak
12%inclusion5 decks43 decks
10%synergy
Ad Nauseam
12%inclusion5 decks43 decks
9%synergy
Waterlogged Teachings
12%inclusion5 decks43 decks
7%synergy
Saw in Half
12%inclusion5 decks43 decks
10%synergy
Fell the Profane
9.3%inclusion4 decks43 decks
0%synergy
Sacrifice
9.3%inclusion4 decks43 decks
9%synergy
Strix Serenade
9.3%inclusion4 decks43 decks
6%synergy
Anguished Unmaking
9.3%inclusion4 decks43 decks
-17%synergy
Chain of Vapor
7.0%inclusion3 decks43 decks
4%synergy
Negate
7.0%inclusion3 decks43 decks
-9%synergy
Dawn's Truce
7.0%inclusion3 decks43 decks
3%synergy
Angel's Grace
7.0%inclusion3 decks43 decks
4%synergy
Dispel
7.0%inclusion3 decks43 decks
4%synergy
Banishing Knack
7.0%inclusion3 decks43 decks
7%synergy
Get Out
7.0%inclusion3 decks43 decks
7%synergy
Inkshield
7.0%inclusion3 decks43 decks
-3%synergy
Sorceries
Reanimate
40%inclusion17 decks43 decks
23%synergy
Windfall
35%inclusion15 decks43 decks
22%synergy
Imperial Seal
19%inclusion8 decks43 decks
12%synergy
Damn
16%inclusion7 decks43 decks
-4%synergy
Lively Dirge
14%inclusion6 decks43 decks
13%synergy
Unmarked Grave
14%inclusion6 decks43 decks
13%synergy
Idyllic Tutor
14%inclusion6 decks43 decks
10%synergy
Singularity Rupture
13%inclusion4 decks31 decks
11%synergy
Demonic Counsel
12%inclusion5 decks43 decks
11%synergy
Farewell
9.3%inclusion4 decks43 decks
-3%synergy
Buried Alive
9.3%inclusion4 decks43 decks
5%synergy
Beseech the Mirror
9.3%inclusion4 decks43 decks
5%synergy
Traumatize
9.3%inclusion4 decks43 decks
9%synergy
Ponder
7.0%inclusion3 decks43 decks
-2%synergy
Diabolic Intent
7.0%inclusion3 decks43 decks
2%synergy
Resurgent Belief
7.0%inclusion3 decks43 decks
5%synergy
Gitaxian Probe
7.0%inclusion3 decks43 decks
5%synergy
Yawgmoth's Will
7.0%inclusion3 decks43 decks
6%synergy
Dread Return
7.0%inclusion3 decks43 decks
4%synergy
Cut Your Losses
7.0%inclusion3 decks43 decks
7%synergy
Extinguish All Hope
7.0%inclusion3 decks43 decks
5%synergy
Grim Tutor
7.0%inclusion3 decks43 decks
3%synergy
Space-Time Anomaly
6.5%inclusion2 decks31 decks
5%synergy
Utility Artifacts
Wishclaw Talisman
30%inclusion13 decks43 decks
23%synergy
Mesmeric Orb
28%inclusion12 decks43 decks
27%synergy
Sensei's Divining Top
16%inclusion7 decks43 decks
7%synergy
Bolas's Citadel
7.0%inclusion3 decks43 decks
-2%synergy
Expedition Map
7.0%inclusion3 decks43 decks
6%synergy
Altar of the Brood
7.0%inclusion3 decks43 decks
6%synergy
Lightning Greaves
7.0%inclusion3 decks43 decks
-16%synergy
Isochron Scepter
7.0%inclusion3 decks43 decks
5%synergy
Enchantments
Tinybones Joins Up
37%inclusion16 decks43 decks
36%synergy
Mirrormade
37%inclusion16 decks43 decks
27%synergy
Ghostly Prison
35%inclusion15 decks43 decks
12%synergy
Propaganda
33%inclusion14 decks43 decks
3%synergy
Seal of Cleansing
30%inclusion13 decks43 decks
29%synergy
Grasp of Fate
26%inclusion11 decks43 decks
20%synergy
Touch the Spirit Realm
21%inclusion9 decks43 decks
19%synergy
Secret Arcade // Dusty Parlor
21%inclusion9 decks43 decks
17%synergy
Trouble in Pairs
21%inclusion9 decks43 decks
16%synergy
Stillness in Motion
20%inclusion8 decks40 decks
20%synergy
Out of the Tombs
19%inclusion8 decks43 decks
18%synergy
Static Prison
19%inclusion8 decks43 decks
18%synergy
Enchanted Evening
19%inclusion8 decks43 decks
17%synergy
Court of Cunning
16%inclusion7 decks43 decks
15%synergy
Sphere of Safety
16%inclusion7 decks43 decks
7%synergy
Monologue Tax
16%inclusion7 decks43 decks
10%synergy
Seal of Removal
16%inclusion7 decks43 decks
16%synergy
Estrid's Invocation
14%inclusion6 decks43 decks
9%synergy
Cemetery Tampering
14%inclusion6 decks43 decks
13%synergy
Chronic Flooding
12%inclusion5 decks43 decks
12%synergy
Starfield of Nyx
12%inclusion5 decks43 decks
8%synergy
Chthonian Nightmare
12%inclusion5 decks43 decks
11%synergy
Black Market Connections
12%inclusion5 decks43 decks
-3%synergy
Land Tax
12%inclusion5 decks43 decks
5%synergy
Teval's Judgment
10%inclusion4 decks40 decks
9%synergy
Darksteel Mutation
9.3%inclusion4 decks43 decks
3%synergy
Smuggler's Share
9.3%inclusion4 decks43 decks
7%synergy
Sigil of the Empty Throne
9.3%inclusion4 decks43 decks
4%synergy
Copy Enchantment
9.3%inclusion4 decks43 decks
4%synergy
Leyline of Anticipation
9.3%inclusion4 decks43 decks
5%synergy
All That Glitters
9.3%inclusion4 decks43 decks
1%synergy
Sheltered by Ghosts
9.3%inclusion4 decks43 decks
7%synergy
Bloodchief Ascension
9.3%inclusion4 decks43 decks
3%synergy
Nowhere to Run
9.3%inclusion4 decks43 decks
8%synergy
Hallowed Haunting
9.3%inclusion4 decks43 decks
7%synergy
Dollmaker's Shop // Porcelain Gallery
9.3%inclusion4 decks43 decks
8%synergy
Greater Auramancy
9.3%inclusion4 decks43 decks
5%synergy
Aura of Silence
9.3%inclusion4 decks43 decks
6%synergy
Counterbalance
7.0%inclusion3 decks43 decks
5%synergy
Founding the Third Path
7.0%inclusion3 decks43 decks
7%synergy
Authority of the Consuls
7.0%inclusion3 decks43 decks
-7%synergy
Hopeless Nightmare
7.0%inclusion3 decks43 decks
7%synergy
Copy Artifact
7.0%inclusion3 decks43 decks
6%synergy
Shark Typhoon
7.0%inclusion3 decks43 decks
1%synergy
Timely Ward
7.0%inclusion3 decks43 decks
2%synergy
The Tale of Tamiyo
7.0%inclusion3 decks43 decks
7%synergy
Solitary Confinement
7.0%inclusion3 decks43 decks
5%synergy
Mirror Room // Fractured Realm
7.0%inclusion3 decks43 decks
5%synergy
Phyrexian Arena
7.0%inclusion3 decks43 decks
-7%synergy
Changing Loyalty
6.7%inclusion1 decks15 decks
6%synergy
Planeswalkers
Teferi, Time Raveler
30%inclusion13 decks43 decks
22%synergy
Jace, Wielder of Mysteries
7.0%inclusion3 decks43 decks
5%synergy
Utility Lands
Otawara, Soaring City
42%inclusion18 decks43 decks
23%synergy
Hall of Heliod's Generosity
40%inclusion17 decks43 decks
27%synergy
Urza's Saga
30%inclusion13 decks43 decks
19%synergy
Urborg, Tomb of Yawgmoth
26%inclusion11 decks43 decks
13%synergy
Cephalid Coliseum
21%inclusion9 decks43 decks
17%synergy
Emergence Zone
19%inclusion8 decks43 decks
17%synergy
Takenuma, Abandoned Mire
19%inclusion8 decks43 decks
12%synergy
Bojuka Bog
16%inclusion7 decks43 decks
-10%synergy
Serra's Sanctum
14%inclusion6 decks43 decks
12%synergy
Reliquary Tower
12%inclusion5 decks43 decks
-22%synergy
Minamo, School at Water's Edge
7.0%inclusion3 decks43 decks
3%synergy
Mistrise Village
5.0%inclusion2 decks40 decks
2%synergy
Mana Artifacts
Sol Ring
100%inclusion43 decks43 decks
10%synergy
Arcane Signet
91%inclusion39 decks43 decks
3%synergy
Talisman of Dominance
84%inclusion36 decks43 decks
33%synergy
Talisman of Progress
67%inclusion29 decks43 decks
23%synergy
Talisman of Hierarchy
60%inclusion26 decks43 decks
15%synergy
Fellwar Stone
51%inclusion22 decks43 decks
18%synergy
Mana Vault
35%inclusion15 decks43 decks
26%synergy
Chrome Mox
33%inclusion14 decks43 decks
24%synergy
Lotus Petal
30%inclusion13 decks43 decks
20%synergy
Mox Opal
23%inclusion10 decks43 decks
15%synergy
Azorius Signet
23%inclusion10 decks43 decks
-6%synergy
Mox Amber
21%inclusion9 decks43 decks
15%synergy
Dimir Signet
19%inclusion8 decks43 decks
-11%synergy
Mox Diamond
19%inclusion8 decks43 decks
12%synergy
Orzhov Signet
16%inclusion7 decks43 decks
-15%synergy
Lion's Eye Diamond
14%inclusion6 decks43 decks
12%synergy
Basalt Monolith
9.3%inclusion4 decks43 decks
7%synergy
Mind Stone
9.3%inclusion4 decks43 decks
-2%synergy
Grim Monolith
7.0%inclusion3 decks43 decks
4%synergy
Chromatic Lantern
7.0%inclusion3 decks43 decks
-6%synergy
Lands
Command Tower
95%inclusion41 decks43 decks
3%synergy
Swamp
86%inclusion37 decks43 decks
-6%synergy
Island
86%inclusion37 decks43 decks
-7%synergy
Plains
84%inclusion36 decks43 decks
-8%synergy
Watery Grave
79%inclusion34 decks43 decks
28%synergy
Flooded Strand
77%inclusion33 decks43 decks
38%synergy
Hallowed Fountain
74%inclusion32 decks43 decks
23%synergy
Godless Shrine
72%inclusion31 decks43 decks
20%synergy
Polluted Delta
70%inclusion30 decks43 decks
32%synergy
Marsh Flats
67%inclusion29 decks43 decks
31%synergy
Exotic Orchard
65%inclusion28 decks43 decks
6%synergy
Sea of Clouds
51%inclusion22 decks43 decks
17%synergy
Underground River
49%inclusion21 decks43 decks
13%synergy
Caves of Koilos
47%inclusion20 decks43 decks
11%synergy
Raffine's Tower
47%inclusion20 decks43 decks
6%synergy
Morphic Pool
47%inclusion20 decks43 decks
13%synergy
Undercity Sewers
44%inclusion19 decks43 decks
29%synergy
Glacial Fortress
42%inclusion18 decks43 decks
-2%synergy
Adarkar Wastes
42%inclusion18 decks43 decks
9%synergy
Vault of Champions
40%inclusion17 decks43 decks
7%synergy
Tundra
37%inclusion16 decks43 decks
21%synergy
Shadowy Backstreet
37%inclusion16 decks43 decks
25%synergy
Isolated Chapel
37%inclusion16 decks43 decks
-5%synergy
Sink into Stupor
37%inclusion16 decks43 decks
24%synergy
Underground Sea
35%inclusion15 decks43 decks
19%synergy
City of Brass
35%inclusion15 decks43 decks
20%synergy
Drowned Catacomb
33%inclusion14 decks43 decks
-6%synergy
Scrubland
33%inclusion14 decks43 decks
17%synergy
Meticulous Archive
33%inclusion14 decks43 decks
19%synergy
Mana Confluence
33%inclusion14 decks43 decks
19%synergy
Gloomlake Verge
28%inclusion12 decks43 decks
17%synergy
Verdant Catacombs
26%inclusion11 decks43 decks
16%synergy
Bloodstained Mire
26%inclusion11 decks43 decks
15%synergy
Arcane Sanctum
23%inclusion10 decks43 decks
-31%synergy
Gemstone Caverns
23%inclusion10 decks43 decks
16%synergy
Misty Rainforest
21%inclusion9 decks43 decks
10%synergy
Prairie Stream
21%inclusion9 decks43 decks
-20%synergy
Floodfarm Verge
21%inclusion9 decks43 decks
10%synergy
Shipwreck Marsh
19%inclusion8 decks43 decks
-2%synergy
Arid Mesa
19%inclusion8 decks43 decks
9%synergy
Windswept Heath
16%inclusion7 decks43 decks
7%synergy
Valgavoth's Lair
16%inclusion7 decks43 decks
14%synergy
Shattered Sanctum
16%inclusion7 decks43 decks
-1%synergy
Fabled Passage
14%inclusion6 decks43 decks
6%synergy
Bleachbone Verge
14%inclusion6 decks43 decks
5%synergy
Reflecting Pool
14%inclusion6 decks43 decks
6%synergy
Temple of Enlightenment
14%inclusion6 decks43 decks
-1%synergy
Scalding Tarn
14%inclusion6 decks43 decks
3%synergy
Sunken Hollow
14%inclusion6 decks43 decks
-26%synergy
Snow-Covered Swamp
14%inclusion6 decks43 decks
11%synergy
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