The Master of Keys (Commander) - Optimized Control

The Master of Keys
Rank #300
28decks
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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
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Exhibition Tidecaller
33%inclusion1 decks3 decks
33%synergy
High Synergy Cards
Animate Dead
89%inclusion25 decks28 decks
80%synergy
Ripples of Undeath
79%inclusion22 decks28 decks
76%synergy
Necromancy
79%inclusion22 decks28 decks
74%synergy
Mystic Remora
93%inclusion26 decks28 decks
72%synergy
Dress Down
68%inclusion19 decks28 decks
66%synergy
Entity Tracker
71%inclusion20 decks28 decks
65%synergy
Inquisitive Glimmer
61%inclusion17 decks28 decks
53%synergy
Amphibian Downpour
57%inclusion16 decks28 decks
53%synergy
Abdel Adrian, Gorion's Ward
54%inclusion15 decks28 decks
52%synergy
Sevinne's Reclamation
61%inclusion17 decks28 decks
52%synergy
Top Cards
Swords to Plowshares
71%inclusion20 decks28 decks
4%synergy
An Offer You Can't Refuse
57%inclusion16 decks28 decks
30%synergy
Entomb
54%inclusion15 decks28 decks
47%synergy
Blind Obedience
54%inclusion15 decks28 decks
42%synergy
Scrabbling Skullcrab
50%inclusion14 decks28 decks
49%synergy
Esper Sentinel
50%inclusion14 decks28 decks
23%synergy
Seal of Cleansing
50%inclusion14 decks28 decks
49%synergy
Mesmeric Orb
46%inclusion13 decks28 decks
45%synergy
The Meathook Massacre
46%inclusion13 decks28 decks
43%synergy
Dance of the Dead
46%inclusion13 decks28 decks
44%synergy
Game Changers
Smothering Tithe
79%inclusion22 decks28 decks
48%synergy
Rhystic Study
71%inclusion20 decks28 decks
41%synergy
Enlightened Tutor
64%inclusion18 decks28 decks
45%synergy
Demonic Tutor
54%inclusion15 decks28 decks
33%synergy
Ancient Tomb
46%inclusion13 decks28 decks
34%synergy
Necropotence
43%inclusion12 decks28 decks
36%synergy
Vampiric Tutor
43%inclusion12 decks28 decks
26%synergy
Fierce Guardianship
39%inclusion11 decks28 decks
19%synergy
Thassa's Oracle
36%inclusion10 decks28 decks
27%synergy
Force of Will
36%inclusion10 decks28 decks
23%synergy
Creatures
Fear of Impostors
43%inclusion12 decks28 decks
41%synergy
Overlord of the Balemurk
43%inclusion12 decks28 decks
41%synergy
Ledger Shredder
43%inclusion12 decks28 decks
34%synergy
Demon of Fate's Design
39%inclusion11 decks28 decks
34%synergy
Lotho, Corrupt Shirriff
36%inclusion10 decks28 decks
19%synergy
Starfield Mystic
36%inclusion10 decks28 decks
29%synergy
Gravebreaker Lamia
36%inclusion10 decks28 decks
35%synergy
Mesa Enchantress
36%inclusion10 decks28 decks
27%synergy
Overlord of the Floodpits
32%inclusion9 decks28 decks
29%synergy
Zur, Eternal Schemer
32%inclusion9 decks28 decks
29%synergy
Displacer Kitten
29%inclusion8 decks28 decks
22%synergy
Victor, Valgavoth's Seneschal
29%inclusion8 decks28 decks
27%synergy
Orcish Bowmasters
29%inclusion8 decks28 decks
18%synergy
Fear of Sleep Paralysis
25%inclusion7 decks28 decks
20%synergy
Grand Abolisher
25%inclusion7 decks28 decks
11%synergy
Hullbreaker Horror
25%inclusion7 decks28 decks
19%synergy
Faerie Mastermind
21%inclusion6 decks28 decks
12%synergy
Doomwake Giant
21%inclusion6 decks28 decks
16%synergy
Lurrus of the Dream-Den
18%inclusion5 decks28 decks
16%synergy
Valley Floodcaller
18%inclusion5 decks28 decks
14%synergy
Enduring Curiosity
18%inclusion5 decks28 decks
10%synergy
Grim Guardian
18%inclusion5 decks28 decks
15%synergy
Psychic Frog
18%inclusion5 decks28 decks
11%synergy
Ghostly Pilferer
18%inclusion5 decks28 decks
10%synergy
Wan Shi Tong, Librarian
15%inclusion2 decks13 decks
10%synergy
Opposition Agent
14%inclusion4 decks28 decks
6%synergy
Heliod, Sun-Crowned
14%inclusion4 decks28 decks
11%synergy
Hedron Crab
14%inclusion4 decks28 decks
14%synergy
Leonin Relic-Warder
14%inclusion4 decks28 decks
14%synergy
Talion, the Kindly Lord
14%inclusion4 decks28 decks
7%synergy
Drannith Magistrate
14%inclusion4 decks28 decks
7%synergy
Aminatou, Veil Piercer
14%inclusion4 decks28 decks
13%synergy
Heliod, the Radiant Dawn
14%inclusion4 decks28 decks
11%synergy
Ondu Spiritdancer
14%inclusion4 decks28 decks
8%synergy
Alseid of Life's Bounty
14%inclusion4 decks28 decks
13%synergy
Witch Enchanter
11%inclusion3 decks28 decks
4%synergy
Hoarding Broodlord
11%inclusion3 decks28 decks
9%synergy
Archon of Sun's Grace
11%inclusion3 decks28 decks
6%synergy
Walking Ballista
11%inclusion3 decks28 decks
8%synergy
Silent Hallcreeper
11%inclusion3 decks28 decks
6%synergy
Laboratory Maniac
11%inclusion3 decks28 decks
7%synergy
Mockingbird
11%inclusion3 decks28 decks
6%synergy
Zur the Enchanter
11%inclusion3 decks28 decks
6%synergy
Dauthi Voidwalker
11%inclusion3 decks28 decks
5%synergy
Emet-Selch of the Third Seat
10%inclusion2 decks21 decks
0%synergy
Archivist of Oghma
7.1%inclusion2 decks28 decks
1%synergy
High Fae Trickster
7.1%inclusion2 decks28 decks
3%synergy
Sheoldred, the Apocalypse
7.1%inclusion2 decks28 decks
-2%synergy
Doom Whisperer
7.1%inclusion2 decks28 decks
6%synergy
Hydroelectric Specimen
7.1%inclusion2 decks28 decks
4%synergy
Instants
Dovin's Veto
46%inclusion13 decks28 decks
21%synergy
Swan Song
46%inclusion13 decks28 decks
27%synergy
Dark Ritual
43%inclusion12 decks28 decks
23%synergy
Mana Drain
39%inclusion11 decks28 decks
22%synergy
Cyclonic Rift
36%inclusion10 decks28 decks
13%synergy
Frantic Search
32%inclusion9 decks28 decks
14%synergy
Path to Exile
32%inclusion9 decks28 decks
-10%synergy
Force of Negation
29%inclusion8 decks28 decks
17%synergy
Gifts Ungiven
25%inclusion7 decks28 decks
22%synergy
Silence
25%inclusion7 decks28 decks
15%synergy
Sink into Stupor
25%inclusion7 decks28 decks
12%synergy
Mystical Tutor
25%inclusion7 decks28 decks
14%synergy
Teferi's Protection
21%inclusion6 decks28 decks
5%synergy
Intuition
21%inclusion6 decks28 decks
20%synergy
Arcane Denial
21%inclusion6 decks28 decks
1%synergy
Borne Upon a Wind
21%inclusion6 decks28 decks
17%synergy
Muddle the Mixture
18%inclusion5 decks28 decks
14%synergy
Brainstorm
18%inclusion5 decks28 decks
1%synergy
Cabal Ritual
18%inclusion5 decks28 decks
14%synergy
Void Rend
18%inclusion5 decks28 decks
-17%synergy
Demonic Consultation
18%inclusion5 decks28 decks
10%synergy
Counterspell
18%inclusion5 decks28 decks
-24%synergy
Fell the Profane
14%inclusion4 decks28 decks
5%synergy
Tainted Pact
14%inclusion4 decks28 decks
7%synergy
Negate
14%inclusion4 decks28 decks
-2%synergy
Deadly Rollick
11%inclusion3 decks28 decks
-5%synergy
Sacrifice
11%inclusion3 decks28 decks
10%synergy
Mental Misstep
11%inclusion3 decks28 decks
4%synergy
Retraction Helix
11%inclusion3 decks28 decks
10%synergy
Culling the Weak
11%inclusion3 decks28 decks
9%synergy
Flusterstorm
11%inclusion3 decks28 decks
3%synergy
Into the Flood Maw
11%inclusion3 decks28 decks
7%synergy
Faithful Mending
11%inclusion3 decks28 decks
7%synergy
Waterlogged Teachings
11%inclusion3 decks28 decks
6%synergy
Generous Gift
11%inclusion3 decks28 decks
-3%synergy
Drown in the Loch
7.1%inclusion2 decks28 decks
5%synergy
Shred Memory
7.1%inclusion2 decks28 decks
7%synergy
Chain of Vapor
7.1%inclusion2 decks28 decks
4%synergy
Lim-Dûl's Vault
7.1%inclusion2 decks28 decks
4%synergy
Razorgrass Ambush
7.1%inclusion2 decks28 decks
6%synergy
Darkblast
7.1%inclusion2 decks28 decks
7%synergy
Angel's Grace
7.1%inclusion2 decks28 decks
5%synergy
Thirst for Meaning
7.1%inclusion2 decks28 decks
6%synergy
Prismatic Strands
7.1%inclusion2 decks28 decks
7%synergy
Ad Nauseam
7.1%inclusion2 decks28 decks
5%synergy
Delay
7.1%inclusion2 decks28 decks
5%synergy
Anguished Unmaking
7.1%inclusion2 decks28 decks
-18%synergy
Mana Leak
7.1%inclusion2 decks28 decks
5%synergy
No More Lies
7.1%inclusion2 decks28 decks
6%synergy
Saw in Half
7.1%inclusion2 decks28 decks
5%synergy
Sorceries
Windfall
43%inclusion12 decks28 decks
30%synergy
Toxic Deluge
36%inclusion10 decks28 decks
16%synergy
Demonic Counsel
21%inclusion6 decks28 decks
20%synergy
Reanimate
21%inclusion6 decks28 decks
5%synergy
Supreme Verdict
18%inclusion5 decks28 decks
3%synergy
Glimpse the Unthinkable
18%inclusion5 decks28 decks
17%synergy
Lively Dirge
14%inclusion4 decks28 decks
13%synergy
Buried Alive
14%inclusion4 decks28 decks
10%synergy
Imperial Seal
11%inclusion3 decks28 decks
4%synergy
Yawgmoth's Will
11%inclusion3 decks28 decks
9%synergy
Replenish
11%inclusion3 decks28 decks
9%synergy
Damn
11%inclusion3 decks28 decks
-10%synergy
Extinguish All Hope
11%inclusion3 decks28 decks
9%synergy
Grim Tutor
11%inclusion3 decks28 decks
6%synergy
Dance of the Manse
11%inclusion3 decks28 decks
7%synergy
Resurgent Belief
7.1%inclusion2 decks28 decks
5%synergy
Unmarked Grave
7.1%inclusion2 decks28 decks
6%synergy
Peer into the Abyss
7.1%inclusion2 decks28 decks
5%synergy
Farewell
7.1%inclusion2 decks28 decks
-5%synergy
Idyllic Tutor
7.1%inclusion2 decks28 decks
3%synergy
Rite of Oblivion
7.1%inclusion2 decks28 decks
6%synergy
Final Parting
7.1%inclusion2 decks28 decks
7%synergy
Mnemonic Betrayal
7.1%inclusion2 decks28 decks
4%synergy
Beseech the Mirror
7.1%inclusion2 decks28 decks
3%synergy
Traumatize
7.1%inclusion2 decks28 decks
7%synergy
Space-Time Anomaly
5.6%inclusion1 decks18 decks
4%synergy
Ultima
5.0%inclusion1 decks20 decks
4%synergy
Utility Artifacts
The One Ring
25%inclusion7 decks28 decks
12%synergy
Wishclaw Talisman
25%inclusion7 decks28 decks
17%synergy
Lightning Greaves
14%inclusion4 decks28 decks
-8%synergy
Cloud Key
7.1%inclusion2 decks28 decks
4%synergy
Isochron Scepter
7.1%inclusion2 decks28 decks
5%synergy
Enchantments
Grasp of Fate
43%inclusion12 decks28 decks
37%synergy
Ghostly Prison
43%inclusion12 decks28 decks
20%synergy
Touch the Spirit Realm
39%inclusion11 decks28 decks
37%synergy
Propaganda
36%inclusion10 decks28 decks
7%synergy
Tinybones Joins Up
32%inclusion9 decks28 decks
31%synergy
Secret Arcade // Dusty Parlor
32%inclusion9 decks28 decks
28%synergy
Seal of Removal
32%inclusion9 decks28 decks
32%synergy
Mirrormade
29%inclusion8 decks28 decks
19%synergy
Sphere of Safety
29%inclusion8 decks28 decks
19%synergy
Cemetery Tampering
29%inclusion8 decks28 decks
28%synergy
Static Prison
29%inclusion8 decks28 decks
28%synergy
Land Tax
29%inclusion8 decks28 decks
23%synergy
Authority of the Consuls
25%inclusion7 decks28 decks
12%synergy
Aura of Silence
25%inclusion7 decks28 decks
22%synergy
Out of the Tombs
21%inclusion6 decks28 decks
21%synergy
Starfield of Nyx
21%inclusion6 decks28 decks
17%synergy
The Tale of Tamiyo
21%inclusion6 decks28 decks
21%synergy
Sheltered by Ghosts
21%inclusion6 decks28 decks
19%synergy
Greater Auramancy
21%inclusion6 decks28 decks
17%synergy
Darksteel Mutation
18%inclusion5 decks28 decks
12%synergy
Chronic Flooding
18%inclusion5 decks28 decks
18%synergy
Black Market Connections
18%inclusion5 decks28 decks
3%synergy
Founding the Third Path
14%inclusion4 decks28 decks
14%synergy
Cacophony Unleashed
14%inclusion4 decks28 decks
13%synergy
Estrid's Invocation
14%inclusion4 decks28 decks
10%synergy
Out of Time
14%inclusion4 decks28 decks
13%synergy
Solitary Confinement
14%inclusion4 decks28 decks
12%synergy
Nowhere to Run
14%inclusion4 decks28 decks
13%synergy
Trouble in Pairs
14%inclusion4 decks28 decks
9%synergy
Standstill
14%inclusion4 decks28 decks
14%synergy
Parallax Wave
11%inclusion3 decks28 decks
10%synergy
Court of Cunning
11%inclusion3 decks28 decks
10%synergy
Attunement
11%inclusion3 decks28 decks
11%synergy
Copy Enchantment
11%inclusion3 decks28 decks
6%synergy
Exquisite Blood
11%inclusion3 decks28 decks
4%synergy
Karmic Justice
11%inclusion3 decks28 decks
8%synergy
All That Glitters
11%inclusion3 decks28 decks
2%synergy
Oubliette
11%inclusion3 decks28 decks
9%synergy
Bloodchief Ascension
11%inclusion3 decks28 decks
5%synergy
Ethereal Armor
11%inclusion3 decks28 decks
6%synergy
Dog Umbra
11%inclusion3 decks28 decks
10%synergy
Mornsong Aria
9.1%inclusion1 decks11 decks
8%synergy
Stillness in Motion
8.3%inclusion2 decks24 decks
8%synergy
Endless Evil
7.1%inclusion2 decks28 decks
7%synergy
Stony Silence
7.1%inclusion2 decks28 decks
7%synergy
Verity Circle
7.1%inclusion2 decks28 decks
7%synergy
Imprisoned in the Moon
7.1%inclusion2 decks28 decks
0%synergy
Glasswing Grace
7.1%inclusion2 decks28 decks
4%synergy
Sigil of the Empty Throne
7.1%inclusion2 decks28 decks
1%synergy
Unable to Scream
7.1%inclusion2 decks28 decks
6%synergy
Planeswalkers
Teferi, Time Raveler
29%inclusion8 decks28 decks
20%synergy
Narset, Parter of Veils
7.1%inclusion2 decks28 decks
3%synergy
Tezzeret, Cruel Captain
5.0%inclusion1 decks20 decks
3%synergy
Utility Lands
Hall of Heliod's Generosity
46%inclusion13 decks28 decks
33%synergy
Cephalid Coliseum
39%inclusion11 decks28 decks
36%synergy
Otawara, Soaring City
39%inclusion11 decks28 decks
20%synergy
Bojuka Bog
29%inclusion8 decks28 decks
2%synergy
Takenuma, Abandoned Mire
29%inclusion8 decks28 decks
22%synergy
Urza's Saga
25%inclusion7 decks28 decks
13%synergy
Serra's Sanctum
21%inclusion6 decks28 decks
20%synergy
Urborg, Tomb of Yawgmoth
14%inclusion4 decks28 decks
1%synergy
Volrath's Stronghold
11%inclusion3 decks28 decks
10%synergy
Emergence Zone
11%inclusion3 decks28 decks
9%synergy
Eiganjo, Seat of the Empire
11%inclusion3 decks28 decks
6%synergy
Reliquary Tower
7.1%inclusion2 decks28 decks
-27%synergy
Mana Artifacts
Sol Ring
96%inclusion27 decks28 decks
7%synergy
Arcane Signet
82%inclusion23 decks28 decks
-6%synergy
Talisman of Dominance
79%inclusion22 decks28 decks
29%synergy
Talisman of Progress
75%inclusion21 decks28 decks
31%synergy
Talisman of Hierarchy
75%inclusion21 decks28 decks
31%synergy
Fellwar Stone
46%inclusion13 decks28 decks
13%synergy
Chrome Mox
29%inclusion8 decks28 decks
19%synergy
Mana Vault
25%inclusion7 decks28 decks
16%synergy
Lotus Petal
18%inclusion5 decks28 decks
8%synergy
Dimir Signet
18%inclusion5 decks28 decks
-13%synergy
Mox Opal
18%inclusion5 decks28 decks
9%synergy
Azorius Signet
18%inclusion5 decks28 decks
-12%synergy
Orzhov Signet
14%inclusion4 decks28 decks
-18%synergy
Mox Amber
11%inclusion3 decks28 decks
5%synergy
Basalt Monolith
7.1%inclusion2 decks28 decks
5%synergy
Hourglass of the Lost
7.1%inclusion2 decks28 decks
7%synergy
Lands
Command Tower
96%inclusion27 decks28 decks
4%synergy
Swamp
93%inclusion26 decks28 decks
1%synergy
Island
93%inclusion26 decks28 decks
0%synergy
Plains
93%inclusion26 decks28 decks
1%synergy
Watery Grave
93%inclusion26 decks28 decks
42%synergy
Godless Shrine
86%inclusion24 decks28 decks
34%synergy
Hallowed Fountain
86%inclusion24 decks28 decks
35%synergy
Polluted Delta
79%inclusion22 decks28 decks
41%synergy
Flooded Strand
75%inclusion21 decks28 decks
37%synergy
Marsh Flats
71%inclusion20 decks28 decks
35%synergy
Sea of Clouds
61%inclusion17 decks28 decks
26%synergy
Raffine's Tower
61%inclusion17 decks28 decks
20%synergy
Exotic Orchard
57%inclusion16 decks28 decks
-2%synergy
Morphic Pool
57%inclusion16 decks28 decks
23%synergy
Adarkar Wastes
57%inclusion16 decks28 decks
25%synergy
Caves of Koilos
54%inclusion15 decks28 decks
18%synergy
Vault of Champions
54%inclusion15 decks28 decks
21%synergy
Underground River
46%inclusion13 decks28 decks
12%synergy
Shadowy Backstreet
43%inclusion12 decks28 decks
30%synergy
Undercity Sewers
39%inclusion11 decks28 decks
25%synergy
Glacial Fortress
36%inclusion10 decks28 decks
-7%synergy
Windswept Heath
36%inclusion10 decks28 decks
26%synergy
Verdant Catacombs
36%inclusion10 decks28 decks
26%synergy
Meticulous Archive
36%inclusion10 decks28 decks
22%synergy
Bloodstained Mire
36%inclusion10 decks28 decks
25%synergy
Reflecting Pool
32%inclusion9 decks28 decks
24%synergy
Isolated Chapel
32%inclusion9 decks28 decks
-9%synergy
Arid Mesa
32%inclusion9 decks28 decks
23%synergy
Mana Confluence
32%inclusion9 decks28 decks
18%synergy
Gloomlake Verge
32%inclusion9 decks28 decks
21%synergy
Misty Rainforest
29%inclusion8 decks28 decks
18%synergy
Valgavoth's Lair
29%inclusion8 decks28 decks
26%synergy
City of Brass
29%inclusion8 decks28 decks
13%synergy
Tundra
25%inclusion7 decks28 decks
9%synergy
Drowned Catacomb
25%inclusion7 decks28 decks
-13%synergy
Sink into Stupor
25%inclusion7 decks28 decks
12%synergy
Scalding Tarn
25%inclusion7 decks28 decks
14%synergy
Floodfarm Verge
25%inclusion7 decks28 decks
14%synergy
Fabled Passage
21%inclusion6 decks28 decks
14%synergy
Brightclimb Pathway
21%inclusion6 decks28 decks
15%synergy
Underground Sea
21%inclusion6 decks28 decks
6%synergy
Arcane Sanctum
21%inclusion6 decks28 decks
-33%synergy
Scrubland
21%inclusion6 decks28 decks
6%synergy
Deserted Beach
21%inclusion6 decks28 decks
1%synergy
Prismatic Vista
18%inclusion5 decks28 decks
14%synergy
Clearwater Pathway
18%inclusion5 decks28 decks
11%synergy
Bleachbone Verge
18%inclusion5 decks28 decks
9%synergy
Prairie Stream
18%inclusion5 decks28 decks
-23%synergy
Skycloud Expanse
18%inclusion5 decks28 decks
3%synergy
Shattered Sanctum
18%inclusion5 decks28 decks
1%synergy
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