The Master of Keys (Commander) - Expensive Optimized

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
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Animate Dead
94%inclusion33 decks35 decks
85%synergy
Abdel Adrian, Gorion's Ward
83%inclusion29 decks35 decks
81%synergy
Entomb
86%inclusion30 decks35 decks
79%synergy
Necromancy
83%inclusion29 decks35 decks
78%synergy
Dance of the Dead
74%inclusion26 decks35 decks
72%synergy
Dress Down
74%inclusion26 decks35 decks
72%synergy
Ripples of Undeath
74%inclusion26 decks35 decks
72%synergy
Mystic Remora
91%inclusion32 decks35 decks
71%synergy
Intuition
69%inclusion24 decks35 decks
67%synergy
Thassa's Oracle
74%inclusion26 decks35 decks
66%synergy
Top Cards
Dark Ritual
77%inclusion27 decks35 decks
57%synergy
Esper Sentinel
74%inclusion26 decks35 decks
47%synergy
Swords to Plowshares
66%inclusion23 decks35 decks
-2%synergy
Sevinne's Reclamation
63%inclusion22 decks35 decks
54%synergy
Imperial Seal
60%inclusion21 decks35 decks
53%synergy
Valley Floodcaller
60%inclusion21 decks35 decks
56%synergy
Force of Negation
60%inclusion21 decks35 decks
48%synergy
Orcish Bowmasters
60%inclusion21 decks35 decks
50%synergy
Silence
60%inclusion21 decks35 decks
50%synergy
Necropotence
60%inclusion21 decks35 decks
54%synergy
Game Changers
Rhystic Study
97%inclusion34 decks35 decks
67%synergy
Vampiric Tutor
97%inclusion34 decks35 decks
81%synergy
Smothering Tithe
94%inclusion33 decks35 decks
64%synergy
Enlightened Tutor
91%inclusion32 decks35 decks
73%synergy
Demonic Tutor
89%inclusion31 decks35 decks
68%synergy
Ancient Tomb
86%inclusion30 decks35 decks
73%synergy
Chrome Mox
86%inclusion30 decks35 decks
77%synergy
Mox Diamond
83%inclusion29 decks35 decks
76%synergy
Mana Vault
77%inclusion27 decks35 decks
69%synergy
Force of Will
77%inclusion27 decks35 decks
65%synergy
Creatures
Grand Abolisher
60%inclusion21 decks35 decks
45%synergy
Lotho, Corrupt Shirriff
54%inclusion19 decks35 decks
37%synergy
Ranger-Captain of Eos
46%inclusion16 decks35 decks
40%synergy
Opposition Agent
43%inclusion15 decks35 decks
35%synergy
Hullbreaker Horror
43%inclusion15 decks35 decks
37%synergy
Displacer Kitten
37%inclusion13 decks35 decks
30%synergy
Inquisitive Glimmer
37%inclusion13 decks35 decks
30%synergy
Drannith Magistrate
37%inclusion13 decks35 decks
30%synergy
Starfield Mystic
34%inclusion12 decks35 decks
28%synergy
Auriok Salvagers
34%inclusion12 decks35 decks
34%synergy
Ledger Shredder
34%inclusion12 decks35 decks
26%synergy
Lurrus of the Dream-Den
31%inclusion11 decks35 decks
30%synergy
Entity Tracker
31%inclusion11 decks35 decks
26%synergy
Wan Shi Tong, Librarian
29%inclusion5 decks17 decks
25%synergy
Mesa Enchantress
29%inclusion10 decks35 decks
20%synergy
Scrabbling Skullcrab
26%inclusion9 decks35 decks
25%synergy
Voice of Victory
25%inclusion7 decks28 decks
17%synergy
Gravebreaker Lamia
23%inclusion8 decks35 decks
22%synergy
Victor, Valgavoth's Seneschal
23%inclusion8 decks35 decks
21%synergy
Mockingbird
23%inclusion8 decks35 decks
19%synergy
Psychic Frog
23%inclusion8 decks35 decks
15%synergy
Archivist of Oghma
20%inclusion7 decks35 decks
14%synergy
Grim Guardian
20%inclusion7 decks35 decks
18%synergy
Phyrexian Metamorph
17%inclusion6 decks35 decks
9%synergy
Demon of Fate's Design
17%inclusion6 decks35 decks
12%synergy
Overlord of the Balemurk
17%inclusion6 decks35 decks
15%synergy
Talion, the Kindly Lord
17%inclusion6 decks35 decks
10%synergy
Ondu Spiritdancer
17%inclusion6 decks35 decks
11%synergy
Zur, Eternal Schemer
17%inclusion6 decks35 decks
14%synergy
Zur the Enchanter
17%inclusion6 decks35 decks
12%synergy
Hoarding Broodlord
14%inclusion5 decks35 decks
13%synergy
Faerie Mastermind
14%inclusion5 decks35 decks
4%synergy
Tataru Taru
12%inclusion3 decks26 decks
3%synergy
Snapcaster Mage
11%inclusion4 decks35 decks
9%synergy
Fear of Impostors
11%inclusion4 decks35 decks
10%synergy
Fear of Sleep Paralysis
11%inclusion4 decks35 decks
7%synergy
Doomwake Giant
11%inclusion4 decks35 decks
6%synergy
Heliod, the Radiant Dawn
11%inclusion4 decks35 decks
8%synergy
Moon-Blessed Cleric
11%inclusion4 decks35 decks
7%synergy
Pollywog Prodigy
11%inclusion4 decks35 decks
8%synergy
Eiganjo Dynastorian
9.1%inclusion1 decks11 decks
8%synergy
Overlord of the Floodpits
8.6%inclusion3 decks35 decks
5%synergy
Hedron Crab
8.6%inclusion3 decks35 decks
8%synergy
Laboratory Maniac
8.6%inclusion3 decks35 decks
5%synergy
Stitcher's Supplier
8.6%inclusion3 decks35 decks
8%synergy
Ghostly Pilferer
8.6%inclusion3 decks35 decks
1%synergy
Leonin Relic-Warder
8.6%inclusion3 decks35 decks
8%synergy
Enduring Curiosity
8.6%inclusion3 decks35 decks
1%synergy
Volatile Stormdrake
5.7%inclusion2 decks35 decks
4%synergy
Sheoldred, the Apocalypse
5.7%inclusion2 decks35 decks
-3%synergy
Instants
Fierce Guardianship
57%inclusion20 decks35 decks
37%synergy
Flusterstorm
54%inclusion19 decks35 decks
46%synergy
Demonic Consultation
54%inclusion19 decks35 decks
47%synergy
Pact of Negation
54%inclusion19 decks35 decks
47%synergy
Tainted Pact
51%inclusion18 decks35 decks
45%synergy
Cabal Ritual
51%inclusion18 decks35 decks
48%synergy
Mental Misstep
49%inclusion17 decks35 decks
42%synergy
Swan Song
49%inclusion17 decks35 decks
28%synergy
Cyclonic Rift
49%inclusion17 decks35 decks
26%synergy
Mindbreak Trap
46%inclusion16 decks35 decks
39%synergy
Borne Upon a Wind
46%inclusion16 decks35 decks
41%synergy
Mystical Tutor
46%inclusion16 decks35 decks
35%synergy
An Offer You Can't Refuse
34%inclusion12 decks35 decks
6%synergy
Gifts Ungiven
31%inclusion11 decks35 decks
29%synergy
Mana Drain
31%inclusion11 decks35 decks
14%synergy
Into the Flood Maw
26%inclusion9 decks35 decks
22%synergy
Teferi's Protection
23%inclusion8 decks35 decks
7%synergy
Chain of Vapor
23%inclusion8 decks35 decks
20%synergy
Sink into Stupor
23%inclusion8 decks35 decks
10%synergy
Path to Exile
23%inclusion8 decks35 decks
-19%synergy
Retraction Helix
17%inclusion6 decks35 decks
16%synergy
Culling the Weak
14%inclusion5 decks35 decks
13%synergy
Banishing Knack
14%inclusion5 decks35 decks
14%synergy
Counterspell
14%inclusion5 decks35 decks
-28%synergy
Saw in Half
14%inclusion5 decks35 decks
12%synergy
Deadly Rollick
11%inclusion4 decks35 decks
-4%synergy
Frantic Search
11%inclusion4 decks35 decks
-7%synergy
Void Rend
11%inclusion4 decks35 decks
-23%synergy
Sacrifice
8.6%inclusion3 decks35 decks
8%synergy
Orim's Chant
8.6%inclusion3 decks35 decks
7%synergy
Dovin's Veto
8.6%inclusion3 decks35 decks
-18%synergy
Brainstorm
8.6%inclusion3 decks35 decks
-8%synergy
Lim-Dûl's Vault
8.6%inclusion3 decks35 decks
6%synergy
Brain Freeze
8.6%inclusion3 decks35 decks
8%synergy
Ad Nauseam
8.6%inclusion3 decks35 decks
6%synergy
Fell the Profane
5.7%inclusion2 decks35 decks
-3%synergy
Muddle the Mixture
5.7%inclusion2 decks35 decks
2%synergy
Snuff Out
5.7%inclusion2 decks35 decks
-4%synergy
Sorceries
Replenish
26%inclusion9 decks35 decks
24%synergy
Reanimate
26%inclusion9 decks35 decks
9%synergy
Toxic Deluge
26%inclusion9 decks35 decks
6%synergy
Lively Dirge
20%inclusion7 decks35 decks
19%synergy
Beseech the Mirror
20%inclusion7 decks35 decks
16%synergy
Windfall
17%inclusion6 decks35 decks
4%synergy
Idyllic Tutor
17%inclusion6 decks35 decks
13%synergy
Cabal Therapy
14%inclusion5 decks35 decks
14%synergy
Mnemonic Betrayal
11%inclusion4 decks35 decks
9%synergy
Redress Fate
11%inclusion4 decks35 decks
6%synergy
Brilliant Restoration
8.6%inclusion3 decks35 decks
7%synergy
Glimpse the Unthinkable
8.6%inclusion3 decks35 decks
8%synergy
Dance of the Manse
8.6%inclusion3 decks35 decks
5%synergy
Unmarked Grave
5.7%inclusion2 decks35 decks
4%synergy
Agadeem's Awakening
5.7%inclusion2 decks35 decks
4%synergy
Demonic Counsel
5.7%inclusion2 decks35 decks
5%synergy
Buried Alive
5.7%inclusion2 decks35 decks
1%synergy
Damn
5.7%inclusion2 decks35 decks
-14%synergy
Grim Tutor
5.7%inclusion2 decks35 decks
1%synergy
Utility Artifacts
The One Ring
57%inclusion20 decks35 decks
45%synergy
Wishclaw Talisman
43%inclusion15 decks35 decks
35%synergy
Mesmeric Orb
23%inclusion8 decks35 decks
22%synergy
Sensei's Divining Top
14%inclusion5 decks35 decks
5%synergy
Vexing Bauble
11%inclusion4 decks35 decks
10%synergy
Whip of Erebos
5.7%inclusion2 decks35 decks
3%synergy
Aetherflux Reservoir
5.7%inclusion2 decks35 decks
-2%synergy
Altar of the Brood
5.7%inclusion2 decks35 decks
4%synergy
Codex Shredder
5.7%inclusion2 decks35 decks
5%synergy
Damping Sphere
5.7%inclusion2 decks35 decks
5%synergy
Enchantments
Tinybones Joins Up
57%inclusion20 decks35 decks
56%synergy
Blind Obedience
57%inclusion20 decks35 decks
45%synergy
Amphibian Downpour
51%inclusion18 decks35 decks
47%synergy
Copy Artifact
31%inclusion11 decks35 decks
30%synergy
The Meathook Massacre
29%inclusion10 decks35 decks
25%synergy
Mirrormade
29%inclusion10 decks35 decks
19%synergy
Ghostly Prison
26%inclusion9 decks35 decks
3%synergy
Copy Enchantment
23%inclusion8 decks35 decks
18%synergy
Steal Enchantment
23%inclusion8 decks35 decks
22%synergy
Chthonian Nightmare
23%inclusion8 decks35 decks
22%synergy
Counterbalance
20%inclusion7 decks35 decks
18%synergy
Sphere of Safety
20%inclusion7 decks35 decks
11%synergy
Grasp of Fate
17%inclusion6 decks35 decks
11%synergy
Estrid's Invocation
17%inclusion6 decks35 decks
12%synergy
Starfield of Nyx
17%inclusion6 decks35 decks
13%synergy
Cemetery Tampering
17%inclusion6 decks35 decks
16%synergy
Secret Arcade // Dusty Parlor
17%inclusion6 decks35 decks
13%synergy
Propaganda
17%inclusion6 decks35 decks
-12%synergy
Trouble in Pairs
17%inclusion6 decks35 decks
12%synergy
Darksteel Mutation
14%inclusion5 decks35 decks
8%synergy
Founding the Third Path
14%inclusion5 decks35 decks
14%synergy
Touch the Spirit Realm
14%inclusion5 decks35 decks
12%synergy
Seal of Cleansing
14%inclusion5 decks35 decks
13%synergy
Monologue Tax
14%inclusion5 decks35 decks
8%synergy
Static Prison
14%inclusion5 decks35 decks
14%synergy
Land Tax
14%inclusion5 decks35 decks
8%synergy
Bloodchief Ascension
14%inclusion5 decks35 decks
8%synergy
Sigil of the Empty Throne
11%inclusion4 decks35 decks
6%synergy
Authority of the Consuls
11%inclusion4 decks35 decks
-2%synergy
Out of the Tombs
11%inclusion4 decks35 decks
11%synergy
Enchanted Evening
11%inclusion4 decks35 decks
10%synergy
Seal of Removal
11%inclusion4 decks35 decks
11%synergy
Shark Typhoon
11%inclusion4 decks35 decks
6%synergy
Black Market Connections
11%inclusion4 decks35 decks
-4%synergy
Greater Auramancy
11%inclusion4 decks35 decks
7%synergy
Stillness in Motion
11%inclusion3 decks27 decks
11%synergy
Primary Research
9.1%inclusion1 decks11 decks
9%synergy
Changing Loyalty
9.1%inclusion1 decks11 decks
8%synergy
Cacophony Unleashed
8.6%inclusion3 decks35 decks
7%synergy
Extravagant Replication
8.6%inclusion3 decks35 decks
4%synergy
Chains of Mephistopheles
8.6%inclusion3 decks35 decks
8%synergy
Aura of Silence
8.6%inclusion3 decks35 decks
5%synergy
Exquisite Blood
8.6%inclusion3 decks35 decks
2%synergy
Leyline of Anticipation
8.6%inclusion3 decks35 decks
4%synergy
Sheltered by Ghosts
8.6%inclusion3 decks35 decks
6%synergy
One with the Multiverse
5.7%inclusion2 decks35 decks
1%synergy
Imprisoned in the Moon
5.7%inclusion2 decks35 decks
-1%synergy
The Cruelty of Gix
5.7%inclusion2 decks35 decks
5%synergy
Mind Over Matter
5.7%inclusion2 decks35 decks
6%synergy
Phyrexian Unlife
5.7%inclusion2 decks35 decks
4%synergy
Planeswalkers
Teferi, Time Raveler
34%inclusion12 decks35 decks
26%synergy
Utility Lands
Otawara, Soaring City
71%inclusion25 decks35 decks
52%synergy
Urza's Saga
43%inclusion15 decks35 decks
31%synergy
Serra's Sanctum
34%inclusion12 decks35 decks
33%synergy
Hall of Heliod's Generosity
29%inclusion10 decks35 decks
16%synergy
Takenuma, Abandoned Mire
29%inclusion10 decks35 decks
22%synergy
Emergence Zone
23%inclusion8 decks35 decks
21%synergy
Cephalid Coliseum
20%inclusion7 decks35 decks
16%synergy
Minamo, School at Water's Edge
14%inclusion5 decks35 decks
11%synergy
Urborg, Tomb of Yawgmoth
14%inclusion5 decks35 decks
1%synergy
Reliquary Tower
11%inclusion4 decks35 decks
-23%synergy
City of Traitors
8.6%inclusion3 decks35 decks
7%synergy
Bojuka Bog
5.7%inclusion2 decks35 decks
-21%synergy
Phyrexian Tower
5.7%inclusion2 decks35 decks
2%synergy
Eiganjo, Seat of the Empire
5.7%inclusion2 decks35 decks
1%synergy
Academy Ruins
5.7%inclusion2 decks35 decks
-1%synergy
Strip Mine
5.7%inclusion2 decks35 decks
4%synergy
Mana Artifacts
Sol Ring
94%inclusion33 decks35 decks
5%synergy
Arcane Signet
91%inclusion32 decks35 decks
4%synergy
Lotus Petal
69%inclusion24 decks35 decks
58%synergy
Talisman of Dominance
66%inclusion23 decks35 decks
15%synergy
Fellwar Stone
54%inclusion19 decks35 decks
21%synergy
Lion's Eye Diamond
54%inclusion19 decks35 decks
52%synergy
Mox Opal
51%inclusion18 decks35 decks
43%synergy
Talisman of Progress
46%inclusion16 decks35 decks
1%synergy
Talisman of Hierarchy
46%inclusion16 decks35 decks
1%synergy
Grim Monolith
29%inclusion10 decks35 decks
25%synergy
Mox Amber
29%inclusion10 decks35 decks
22%synergy
The Soul Stone
14%inclusion3 decks21 decks
12%synergy
Basalt Monolith
11%inclusion4 decks35 decks
9%synergy
Dimir Signet
8.6%inclusion3 decks35 decks
-21%synergy
Azorius Signet
8.6%inclusion3 decks35 decks
-21%synergy
Springleaf Drum
5.7%inclusion2 decks35 decks
4%synergy
Orzhov Signet
5.7%inclusion2 decks35 decks
-26%synergy
Lands
Command Tower
100%inclusion35 decks35 decks
7%synergy
Tundra
100%inclusion35 decks35 decks
84%synergy
Underground Sea
100%inclusion35 decks35 decks
84%synergy
Scrubland
100%inclusion35 decks35 decks
84%synergy
Watery Grave
97%inclusion34 decks35 decks
46%synergy
Marsh Flats
94%inclusion33 decks35 decks
58%synergy
Polluted Delta
94%inclusion33 decks35 decks
56%synergy
Godless Shrine
91%inclusion32 decks35 decks
40%synergy
Flooded Strand
91%inclusion32 decks35 decks
53%synergy
Hallowed Fountain
91%inclusion32 decks35 decks
40%synergy
Bloodstained Mire
71%inclusion25 decks35 decks
61%synergy
Mana Confluence
69%inclusion24 decks35 decks
55%synergy
Misty Rainforest
63%inclusion22 decks35 decks
52%synergy
Undercity Sewers
63%inclusion22 decks35 decks
48%synergy
City of Brass
63%inclusion22 decks35 decks
48%synergy
Verdant Catacombs
60%inclusion21 decks35 decks
50%synergy
Arid Mesa
57%inclusion20 decks35 decks
48%synergy
Morphic Pool
57%inclusion20 decks35 decks
24%synergy
Vault of Champions
57%inclusion20 decks35 decks
25%synergy
Sea of Clouds
54%inclusion19 decks35 decks
20%synergy
Gemstone Caverns
54%inclusion19 decks35 decks
47%synergy
Windswept Heath
51%inclusion18 decks35 decks
42%synergy
Scalding Tarn
51%inclusion18 decks35 decks
41%synergy
Island
51%inclusion18 decks35 decks
-42%synergy
Exotic Orchard
46%inclusion16 decks35 decks
-13%synergy
Swamp
46%inclusion16 decks35 decks
-46%synergy
Plains
43%inclusion15 decks35 decks
-49%synergy
Raffine's Tower
40%inclusion14 decks35 decks
-1%synergy
Meticulous Archive
34%inclusion12 decks35 decks
20%synergy
Shadowy Backstreet
31%inclusion11 decks35 decks
19%synergy
Sink into Stupor
23%inclusion8 decks35 decks
10%synergy
Caves of Koilos
20%inclusion7 decks35 decks
-16%synergy
Underground River
20%inclusion7 decks35 decks
-15%synergy
Forbidden Orchard
20%inclusion7 decks35 decks
18%synergy
Snow-Covered Swamp
20%inclusion7 decks35 decks
17%synergy
Snow-Covered Island
17%inclusion6 decks35 decks
14%synergy
Snow-Covered Plains
17%inclusion6 decks35 decks
15%synergy
Adarkar Wastes
17%inclusion6 decks35 decks
-16%synergy
Cavern of Souls
14%inclusion5 decks35 decks
8%synergy
Starting Town
12%inclusion3 decks26 decks
7%synergy
Glacial Fortress
11%inclusion4 decks35 decks
-32%synergy
Spire of Industry
11%inclusion4 decks35 decks
4%synergy
Reflecting Pool
11%inclusion4 decks35 decks
3%synergy
Valgavoth's Lair
11%inclusion4 decks35 decks
9%synergy
Floodfarm Verge
11%inclusion4 decks35 decks
0%synergy
Bleachbone Verge
8.8%inclusion3 decks34 decks
0%synergy
Prismatic Vista
8.6%inclusion3 decks35 decks
5%synergy
Brightclimb Pathway
8.6%inclusion3 decks35 decks
2%synergy
Arcane Sanctum
8.6%inclusion3 decks35 decks
-45%synergy
Isolated Chapel
8.6%inclusion3 decks35 decks
-34%synergy
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