The Master of Keys (Commander) - Optimized Control

The Master of Keys
Rank #300
35decks
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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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Enchantments
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Utility Lands
Mana Artifacts
Lands
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Archnemesis
14%inclusion1 decks7 decks
14%synergy
Murdock's Crusade
13%inclusion1 decks8 decks
12%synergy
High Synergy Cards
Ripples of Undeath
83%inclusion29 decks35 decks
80%synergy
Animate Dead
86%inclusion30 decks35 decks
76%synergy
Necromancy
77%inclusion27 decks35 decks
73%synergy
Entity Tracker
71%inclusion25 decks35 decks
66%synergy
Dress Down
66%inclusion23 decks35 decks
64%synergy
Mystic Remora
83%inclusion29 decks35 decks
62%synergy
Inquisitive Glimmer
66%inclusion23 decks35 decks
59%synergy
Abdel Adrian, Gorion's Ward
54%inclusion19 decks35 decks
53%synergy
Amphibian Downpour
57%inclusion20 decks35 decks
53%synergy
Scrabbling Skullcrab
49%inclusion17 decks35 decks
48%synergy
Top Cards
Swords to Plowshares
71%inclusion25 decks35 decks
4%synergy
Sevinne's Reclamation
54%inclusion19 decks35 decks
45%synergy
An Offer You Can't Refuse
54%inclusion19 decks35 decks
26%synergy
Entomb
54%inclusion19 decks35 decks
48%synergy
Seal of Cleansing
49%inclusion17 decks35 decks
47%synergy
Blind Obedience
46%inclusion16 decks35 decks
34%synergy
Ghostly Prison
46%inclusion16 decks35 decks
23%synergy
The Meathook Massacre
43%inclusion15 decks35 decks
40%synergy
Dance of the Dead
43%inclusion15 decks35 decks
41%synergy
Grasp of Fate
43%inclusion15 decks35 decks
37%synergy
Game Changers
Smothering Tithe
71%inclusion25 decks35 decks
41%synergy
Rhystic Study
66%inclusion23 decks35 decks
35%synergy
Enlightened Tutor
57%inclusion20 decks35 decks
39%synergy
Demonic Tutor
46%inclusion16 decks35 decks
26%synergy
Ancient Tomb
37%inclusion13 decks35 decks
25%synergy
Force of Will
37%inclusion13 decks35 decks
25%synergy
Fierce Guardianship
37%inclusion13 decks35 decks
17%synergy
Necropotence
34%inclusion12 decks35 decks
28%synergy
Gifts Ungiven
31%inclusion11 decks35 decks
29%synergy
Cyclonic Rift
31%inclusion11 decks35 decks
9%synergy
Creatures
Starfield Mystic
43%inclusion15 decks35 decks
36%synergy
Gravebreaker Lamia
43%inclusion15 decks35 decks
42%synergy
Demon of Fate's Design
43%inclusion15 decks35 decks
37%synergy
Esper Sentinel
43%inclusion15 decks35 decks
16%synergy
Fear of Impostors
43%inclusion15 decks35 decks
41%synergy
Overlord of the Balemurk
43%inclusion15 decks35 decks
41%synergy
Zur, Eternal Schemer
37%inclusion13 decks35 decks
34%synergy
Ledger Shredder
37%inclusion13 decks35 decks
29%synergy
Mesa Enchantress
34%inclusion12 decks35 decks
26%synergy
Lotho, Corrupt Shirriff
29%inclusion10 decks35 decks
12%synergy
Thassa's Oracle
29%inclusion10 decks35 decks
20%synergy
Overlord of the Floodpits
29%inclusion10 decks35 decks
25%synergy
Victor, Valgavoth's Seneschal
29%inclusion10 decks35 decks
27%synergy
Fear of Sleep Paralysis
29%inclusion10 decks35 decks
24%synergy
Displacer Kitten
23%inclusion8 decks35 decks
16%synergy
Grand Abolisher
23%inclusion8 decks35 decks
8%synergy
Hullbreaker Horror
23%inclusion8 decks35 decks
17%synergy
Orcish Bowmasters
23%inclusion8 decks35 decks
13%synergy
Enduring Curiosity
20%inclusion7 decks35 decks
12%synergy
Faerie Mastermind
20%inclusion7 decks35 decks
10%synergy
Doomwake Giant
20%inclusion7 decks35 decks
14%synergy
Aminatou, Veil Piercer
17%inclusion6 decks35 decks
16%synergy
Heliod, the Radiant Dawn
17%inclusion6 decks35 decks
14%synergy
Exhibition Tidecaller
17%inclusion2 decks12 decks
16%synergy
Lurrus of the Dream-Den
14%inclusion5 decks35 decks
13%synergy
Valley Floodcaller
14%inclusion5 decks35 decks
11%synergy
Silent Hallcreeper
14%inclusion5 decks35 decks
10%synergy
Leonin Relic-Warder
14%inclusion5 decks35 decks
14%synergy
Laboratory Maniac
14%inclusion5 decks35 decks
11%synergy
Grim Guardian
14%inclusion5 decks35 decks
12%synergy
Psychic Frog
14%inclusion5 decks35 decks
7%synergy
Ghostly Pilferer
14%inclusion5 decks35 decks
7%synergy
Witch Enchanter
11%inclusion4 decks35 decks
4%synergy
Opposition Agent
11%inclusion4 decks35 decks
4%synergy
Archon of Sun's Grace
11%inclusion4 decks35 decks
7%synergy
Sage of Mysteries
11%inclusion4 decks35 decks
11%synergy
Heliod, Sun-Crowned
11%inclusion4 decks35 decks
8%synergy
Hedron Crab
11%inclusion4 decks35 decks
11%synergy
Talion, the Kindly Lord
11%inclusion4 decks35 decks
4%synergy
Drannith Magistrate
11%inclusion4 decks35 decks
4%synergy
Ghostly Dancers
11%inclusion4 decks35 decks
9%synergy
Ondu Spiritdancer
11%inclusion4 decks35 decks
5%synergy
Alseid of Life's Bounty
11%inclusion4 decks35 decks
10%synergy
Dauthi Voidwalker
11%inclusion4 decks35 decks
6%synergy
Wan Shi Tong, Librarian
10%inclusion2 decks20 decks
5%synergy
Hoarding Broodlord
8.6%inclusion3 decks35 decks
7%synergy
Bruvac the Grandiloquent
8.6%inclusion3 decks35 decks
8%synergy
Walking Ballista
8.6%inclusion3 decks35 decks
6%synergy
Soaring Lightbringer
8.6%inclusion3 decks35 decks
4%synergy
Stitcher's Supplier
8.6%inclusion3 decks35 decks
8%synergy
Instants
Dark Ritual
43%inclusion15 decks35 decks
23%synergy
Dovin's Veto
40%inclusion14 decks35 decks
14%synergy
Swan Song
40%inclusion14 decks35 decks
20%synergy
Mana Drain
37%inclusion13 decks35 decks
20%synergy
Frantic Search
31%inclusion11 decks35 decks
13%synergy
Vampiric Tutor
31%inclusion11 decks35 decks
15%synergy
Sink into Stupor
29%inclusion10 decks35 decks
15%synergy
Path to Exile
29%inclusion10 decks35 decks
-14%synergy
Force of Negation
26%inclusion9 decks35 decks
14%synergy
Void Rend
23%inclusion8 decks35 decks
-12%synergy
Silence
23%inclusion8 decks35 decks
13%synergy
Mystical Tutor
23%inclusion8 decks35 decks
12%synergy
Teferi's Protection
20%inclusion7 decks35 decks
4%synergy
Arcane Denial
20%inclusion7 decks35 decks
-0%synergy
Counterspell
20%inclusion7 decks35 decks
-22%synergy
Borne Upon a Wind
20%inclusion7 decks35 decks
15%synergy
Intuition
17%inclusion6 decks35 decks
16%synergy
Fell the Profane
14%inclusion5 decks35 decks
5%synergy
Muddle the Mixture
14%inclusion5 decks35 decks
11%synergy
Negate
14%inclusion5 decks35 decks
-2%synergy
Cabal Ritual
14%inclusion5 decks35 decks
11%synergy
Demonic Consultation
14%inclusion5 decks35 decks
7%synergy
Tainted Pact
11%inclusion4 decks35 decks
5%synergy
Brainstorm
11%inclusion4 decks35 decks
-5%synergy
Thirst for Meaning
11%inclusion4 decks35 decks
10%synergy
Into the Flood Maw
11%inclusion4 decks35 decks
8%synergy
Faithful Mending
11%inclusion4 decks35 decks
8%synergy
Waterlogged Teachings
11%inclusion4 decks35 decks
7%synergy
Generous Gift
11%inclusion4 decks35 decks
-2%synergy
Deadly Rollick
8.6%inclusion3 decks35 decks
-7%synergy
Sacrifice
8.6%inclusion3 decks35 decks
8%synergy
Mental Misstep
8.6%inclusion3 decks35 decks
2%synergy
Retraction Helix
8.6%inclusion3 decks35 decks
8%synergy
Culling the Weak
8.6%inclusion3 decks35 decks
7%synergy
Flusterstorm
8.6%inclusion3 decks35 decks
1%synergy
Anguished Unmaking
8.6%inclusion3 decks35 decks
-17%synergy
Drown in the Loch
5.7%inclusion2 decks35 decks
4%synergy
Shred Memory
5.7%inclusion2 decks35 decks
5%synergy
Chain of Vapor
5.7%inclusion2 decks35 decks
3%synergy
Dawn's Truce
5.7%inclusion2 decks35 decks
1%synergy
Lim-Dûl's Vault
5.7%inclusion2 decks35 decks
3%synergy
Razorgrass Ambush
5.7%inclusion2 decks35 decks
5%synergy
Darkblast
5.7%inclusion2 decks35 decks
6%synergy
Angel's Grace
5.7%inclusion2 decks35 decks
3%synergy
Prismatic Strands
5.7%inclusion2 decks35 decks
6%synergy
Ad Nauseam
5.7%inclusion2 decks35 decks
4%synergy
Delay
5.7%inclusion2 decks35 decks
4%synergy
Mana Leak
5.7%inclusion2 decks35 decks
4%synergy
Spell Pierce
5.7%inclusion2 decks35 decks
3%synergy
Inkshield
5.7%inclusion2 decks35 decks
-4%synergy
Sorceries
Windfall
40%inclusion14 decks35 decks
27%synergy
Toxic Deluge
34%inclusion12 decks35 decks
14%synergy
Demonic Counsel
23%inclusion8 decks35 decks
22%synergy
Reanimate
23%inclusion8 decks35 decks
7%synergy
Buried Alive
20%inclusion7 decks35 decks
16%synergy
Supreme Verdict
17%inclusion6 decks35 decks
3%synergy
Replenish
14%inclusion5 decks35 decks
13%synergy
Glimpse the Unthinkable
14%inclusion5 decks35 decks
14%synergy
Damn
14%inclusion5 decks35 decks
-6%synergy
Lively Dirge
11%inclusion4 decks35 decks
10%synergy
Extinguish All Hope
11%inclusion4 decks35 decks
10%synergy
Dance of the Manse
11%inclusion4 decks35 decks
8%synergy
Resurgent Belief
8.6%inclusion3 decks35 decks
7%synergy
Unmarked Grave
8.6%inclusion3 decks35 decks
7%synergy
Imperial Seal
8.6%inclusion3 decks35 decks
2%synergy
Yawgmoth's Will
8.6%inclusion3 decks35 decks
7%synergy
Wrath of God
8.6%inclusion3 decks35 decks
5%synergy
Beseech the Mirror
8.6%inclusion3 decks35 decks
5%synergy
Maddening Cacophony
8.6%inclusion3 decks35 decks
8%synergy
Traumatize
8.6%inclusion3 decks35 decks
8%synergy
Grim Tutor
8.6%inclusion3 decks35 decks
4%synergy
Space-Time Anomaly
8.0%inclusion2 decks25 decks
6%synergy
Ponder
5.7%inclusion2 decks35 decks
-3%synergy
Open the Vaults
5.7%inclusion2 decks35 decks
5%synergy
Peer into the Abyss
5.7%inclusion2 decks35 decks
3%synergy
Split Up
5.7%inclusion2 decks35 decks
5%synergy
Dread Return
5.7%inclusion2 decks35 decks
3%synergy
Farewell
5.7%inclusion2 decks35 decks
-6%synergy
Idyllic Tutor
5.7%inclusion2 decks35 decks
1%synergy
Mind Grind
5.7%inclusion2 decks35 decks
5%synergy
Rite of Oblivion
5.7%inclusion2 decks35 decks
5%synergy
Final Parting
5.7%inclusion2 decks35 decks
5%synergy
Mnemonic Betrayal
5.7%inclusion2 decks35 decks
3%synergy
Fractured Sanity
5.7%inclusion2 decks35 decks
5%synergy
Redress Fate
5.7%inclusion2 decks35 decks
1%synergy
Utility Artifacts
Mesmeric Orb
40%inclusion14 decks35 decks
39%synergy
The One Ring
23%inclusion8 decks35 decks
10%synergy
Wishclaw Talisman
20%inclusion7 decks35 decks
12%synergy
Lightning Greaves
11%inclusion4 decks35 decks
-11%synergy
Cloud Key
8.6%inclusion3 decks35 decks
5%synergy
Perpetual Timepiece
5.7%inclusion2 decks35 decks
5%synergy
Expedition Map
5.7%inclusion2 decks35 decks
4%synergy
Swiftfoot Boots
5.7%inclusion2 decks35 decks
-18%synergy
Isochron Scepter
5.7%inclusion2 decks35 decks
4%synergy
Enchantments
Propaganda
40%inclusion14 decks35 decks
11%synergy
Touch the Spirit Realm
34%inclusion12 decks35 decks
32%synergy
Cemetery Tampering
34%inclusion12 decks35 decks
34%synergy
Tinybones Joins Up
29%inclusion10 decks35 decks
27%synergy
Sphere of Safety
29%inclusion10 decks35 decks
19%synergy
Seal of Removal
29%inclusion10 decks35 decks
28%synergy
Starfield of Nyx
26%inclusion9 decks35 decks
22%synergy
Static Prison
26%inclusion9 decks35 decks
25%synergy
Secret Arcade // Dusty Parlor
26%inclusion9 decks35 decks
21%synergy
Land Tax
26%inclusion9 decks35 decks
20%synergy
Authority of the Consuls
23%inclusion8 decks35 decks
9%synergy
Mirrormade
23%inclusion8 decks35 decks
13%synergy
Estrid's Invocation
23%inclusion8 decks35 decks
18%synergy
The Tale of Tamiyo
23%inclusion8 decks35 decks
22%synergy
Greater Auramancy
23%inclusion8 decks35 decks
19%synergy
Aura of Silence
23%inclusion8 decks35 decks
20%synergy
Darksteel Mutation
20%inclusion7 decks35 decks
14%synergy
Cacophony Unleashed
20%inclusion7 decks35 decks
18%synergy
Out of the Tombs
20%inclusion7 decks35 decks
20%synergy
Black Market Connections
20%inclusion7 decks35 decks
5%synergy
Chronic Flooding
17%inclusion6 decks35 decks
17%synergy
Sheltered by Ghosts
17%inclusion6 decks35 decks
14%synergy
Court of Cunning
14%inclusion5 decks35 decks
13%synergy
Oubliette
14%inclusion5 decks35 decks
13%synergy
Nowhere to Run
14%inclusion5 decks35 decks
13%synergy
Founding the Third Path
11%inclusion4 decks35 decks
11%synergy
Sigil of the Empty Throne
11%inclusion4 decks35 decks
6%synergy
Out of Time
11%inclusion4 decks35 decks
10%synergy
Karmic Justice
11%inclusion4 decks35 decks
9%synergy
All That Glitters
11%inclusion4 decks35 decks
3%synergy
Ethereal Armor
11%inclusion4 decks35 decks
7%synergy
Trouble in Pairs
11%inclusion4 decks35 decks
6%synergy
Standstill
11%inclusion4 decks35 decks
11%synergy
Stillness in Motion
10%inclusion3 decks31 decks
9%synergy
Parallax Wave
8.6%inclusion3 decks35 decks
8%synergy
Imprisoned in the Moon
8.6%inclusion3 decks35 decks
2%synergy
Utter Insignificance
8.6%inclusion3 decks35 decks
8%synergy
Soul Snare
8.6%inclusion3 decks35 decks
8%synergy
Attunement
8.6%inclusion3 decks35 decks
8%synergy
Copy Enchantment
8.6%inclusion3 decks35 decks
4%synergy
Exquisite Blood
8.6%inclusion3 decks35 decks
2%synergy
Leyline of Anticipation
8.6%inclusion3 decks35 decks
4%synergy
Stasis
8.6%inclusion3 decks35 decks
8%synergy
Restricted Office // Lecture Hall
8.6%inclusion3 decks35 decks
7%synergy
Eaten by Piranhas
8.6%inclusion3 decks35 decks
7%synergy
Enchanted Evening
8.6%inclusion3 decks35 decks
7%synergy
Solitary Confinement
8.6%inclusion3 decks35 decks
6%synergy
Bloodchief Ascension
8.6%inclusion3 decks35 decks
3%synergy
Dog Umbra
8.6%inclusion3 decks35 decks
8%synergy
Phyrexian Arena
8.6%inclusion3 decks35 decks
-5%synergy
Planeswalkers
Teferi, Time Raveler
26%inclusion9 decks35 decks
18%synergy
Ashiok, Dream Render
5.7%inclusion2 decks35 decks
4%synergy
Narset, Parter of Veils
5.7%inclusion2 decks35 decks
2%synergy
Utility Lands
Hall of Heliod's Generosity
46%inclusion16 decks35 decks
33%synergy
Otawara, Soaring City
37%inclusion13 decks35 decks
18%synergy
Cephalid Coliseum
34%inclusion12 decks35 decks
31%synergy
Bojuka Bog
26%inclusion9 decks35 decks
-1%synergy
Takenuma, Abandoned Mire
26%inclusion9 decks35 decks
19%synergy
Serra's Sanctum
20%inclusion7 decks35 decks
18%synergy
Urza's Saga
20%inclusion7 decks35 decks
8%synergy
Eiganjo, Seat of the Empire
11%inclusion4 decks35 decks
6%synergy
Urborg, Tomb of Yawgmoth
11%inclusion4 decks35 decks
-2%synergy
Volrath's Stronghold
8.6%inclusion3 decks35 decks
8%synergy
Emergence Zone
8.6%inclusion3 decks35 decks
7%synergy
Command Beacon
8.6%inclusion3 decks35 decks
6%synergy
Reliquary Tower
8.6%inclusion3 decks35 decks
-25%synergy
Phyrexian Tower
5.7%inclusion2 decks35 decks
2%synergy
Dakmor Salvage
5.7%inclusion2 decks35 decks
6%synergy
Rogue's Passage
5.7%inclusion2 decks35 decks
-4%synergy
Mana Artifacts
Sol Ring
97%inclusion34 decks35 decks
8%synergy
Arcane Signet
80%inclusion28 decks35 decks
-8%synergy
Talisman of Dominance
69%inclusion24 decks35 decks
18%synergy
Talisman of Progress
66%inclusion23 decks35 decks
21%synergy
Talisman of Hierarchy
60%inclusion21 decks35 decks
15%synergy
Fellwar Stone
46%inclusion16 decks35 decks
13%synergy
Chrome Mox
23%inclusion8 decks35 decks
14%synergy
Mana Vault
20%inclusion7 decks35 decks
11%synergy
Dimir Signet
20%inclusion7 decks35 decks
-10%synergy
Azorius Signet
20%inclusion7 decks35 decks
-9%synergy
Lotus Petal
17%inclusion6 decks35 decks
7%synergy
Orzhov Signet
17%inclusion6 decks35 decks
-14%synergy
Mox Opal
14%inclusion5 decks35 decks
6%synergy
Mox Amber
8.6%inclusion3 decks35 decks
2%synergy
Thought Vessel
8.6%inclusion3 decks35 decks
-17%synergy
Basalt Monolith
5.7%inclusion2 decks35 decks
4%synergy
Hourglass of the Lost
5.7%inclusion2 decks35 decks
5%synergy
Mind Stone
5.7%inclusion2 decks35 decks
-6%synergy
Lands
Command Tower
97%inclusion34 decks35 decks
5%synergy
Swamp
94%inclusion33 decks35 decks
2%synergy
Island
94%inclusion33 decks35 decks
1%synergy
Plains
94%inclusion33 decks35 decks
2%synergy
Watery Grave
86%inclusion30 decks35 decks
34%synergy
Godless Shrine
80%inclusion28 decks35 decks
28%synergy
Hallowed Fountain
80%inclusion28 decks35 decks
29%synergy
Polluted Delta
66%inclusion23 decks35 decks
28%synergy
Flooded Strand
66%inclusion23 decks35 decks
27%synergy
Raffine's Tower
60%inclusion21 decks35 decks
19%synergy
Marsh Flats
60%inclusion21 decks35 decks
24%synergy
Sea of Clouds
54%inclusion19 decks35 decks
20%synergy
Adarkar Wastes
54%inclusion19 decks35 decks
21%synergy
Exotic Orchard
51%inclusion18 decks35 decks
-8%synergy
Caves of Koilos
51%inclusion18 decks35 decks
16%synergy
Morphic Pool
51%inclusion18 decks35 decks
18%synergy
Underground River
49%inclusion17 decks35 decks
13%synergy
Vault of Champions
49%inclusion17 decks35 decks
16%synergy
Glacial Fortress
43%inclusion15 decks35 decks
-1%synergy
Shadowy Backstreet
40%inclusion14 decks35 decks
27%synergy
Isolated Chapel
40%inclusion14 decks35 decks
-2%synergy
Undercity Sewers
34%inclusion12 decks35 decks
19%synergy
Meticulous Archive
34%inclusion12 decks35 decks
20%synergy
Gloomlake Verge
34%inclusion12 decks35 decks
23%synergy
Verdant Catacombs
31%inclusion11 decks35 decks
22%synergy
Drowned Catacomb
31%inclusion11 decks35 decks
-7%synergy
Windswept Heath
29%inclusion10 decks35 decks
19%synergy
Reflecting Pool
29%inclusion10 decks35 decks
20%synergy
Arcane Sanctum
29%inclusion10 decks35 decks
-25%synergy
Sink into Stupor
29%inclusion10 decks35 decks
15%synergy
Mana Confluence
29%inclusion10 decks35 decks
15%synergy
Bloodstained Mire
29%inclusion10 decks35 decks
18%synergy
Valgavoth's Lair
26%inclusion9 decks35 decks
23%synergy
Arid Mesa
26%inclusion9 decks35 decks
16%synergy
Floodfarm Verge
26%inclusion9 decks35 decks
15%synergy
Misty Rainforest
23%inclusion8 decks35 decks
12%synergy
Bleachbone Verge
23%inclusion8 decks35 decks
14%synergy
Prairie Stream
23%inclusion8 decks35 decks
-18%synergy
Shattered Sanctum
23%inclusion8 decks35 decks
5%synergy
Deserted Beach
23%inclusion8 decks35 decks
2%synergy
City of Brass
23%inclusion8 decks35 decks
8%synergy
Tundra
20%inclusion7 decks35 decks
4%synergy
Scalding Tarn
20%inclusion7 decks35 decks
9%synergy
Fabled Passage
17%inclusion6 decks35 decks
9%synergy
Brightclimb Pathway
17%inclusion6 decks35 decks
11%synergy
Underground Sea
17%inclusion6 decks35 decks
1%synergy
Shipwreck Marsh
17%inclusion6 decks35 decks
-3%synergy
Scrubland
17%inclusion6 decks35 decks
1%synergy
Prismatic Vista
14%inclusion5 decks35 decks
10%synergy
Fell the Profane
14%inclusion5 decks35 decks
5%synergy
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