The Master of Keys (Commander) - Expensive Core Mill

The Master of Keys
Rank #306
2decks
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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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Mana Artifacts
Lands
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Witch Enchanter
50%inclusion1 decks2 decks
43%synergy
Kishla Trawlers
50%inclusion1 decks2 decks
50%synergy
Marang River Regent
50%inclusion1 decks2 decks
50%synergy
Persistent Petitioners
50%inclusion1 decks2 decks
50%synergy
Steamcore Scholar
50%inclusion1 decks2 decks
50%synergy
Murderous Rider
50%inclusion1 decks2 decks
42%synergy
Lotho, Corrupt Shirriff
50%inclusion1 decks2 decks
33%synergy
Razaketh, the Foulblooded
50%inclusion1 decks2 decks
48%synergy
Troll of Khazad-dûm
50%inclusion1 decks2 decks
48%synergy
Mulldrifter
50%inclusion1 decks2 decks
45%synergy
Starfield Mystic
50%inclusion1 decks2 decks
43%synergy
Gravebreaker Lamia
50%inclusion1 decks2 decks
49%synergy
Overlord of the Floodpits
50%inclusion1 decks2 decks
46%synergy
Doom Whisperer
50%inclusion1 decks2 decks
49%synergy
Inquisitive Glimmer
50%inclusion1 decks2 decks
42%synergy
Eidolon of Astral Winds
50%inclusion1 decks2 decks
50%synergy
Sphinx of the Second Sun
50%inclusion1 decks2 decks
48%synergy
Demon of Fate's Design
50%inclusion1 decks2 decks
45%synergy
Unctus, Grand Metatect
50%inclusion1 decks2 decks
49%synergy
Nightscape Familiar
50%inclusion1 decks2 decks
50%synergy
Hydroelectric Specimen
50%inclusion1 decks2 decks
47%synergy
Kiora, the Rising Tide
50%inclusion1 decks2 decks
49%synergy
Welcoming Vampire
50%inclusion1 decks2 decks
49%synergy
Sunscape Familiar
50%inclusion1 decks2 decks
50%synergy
Fear of Impostors
50%inclusion1 decks2 decks
49%synergy
Overlord of the Balemurk
50%inclusion1 decks2 decks
48%synergy
Silent Hallcreeper
50%inclusion1 decks2 decks
46%synergy
Shriekmaw
50%inclusion1 decks2 decks
48%synergy
Boggart Trawler
50%inclusion1 decks2 decks
47%synergy
Mesa Enchantress
50%inclusion1 decks2 decks
41%synergy
Enduring Innocence
50%inclusion1 decks2 decks
48%synergy
Skullsnap Nuisance
50%inclusion1 decks2 decks
50%synergy
Spirited Companion
50%inclusion1 decks2 decks
48%synergy
Enduring Curiosity
50%inclusion1 decks2 decks
42%synergy
Archetype of Imagination
50%inclusion1 decks2 decks
45%synergy
Loran of the Third Path
50%inclusion1 decks2 decks
47%synergy
Glasspool Mimic
50%inclusion1 decks2 decks
48%synergy
Heliod, the Radiant Dawn
50%inclusion1 decks2 decks
46%synergy
Brazen Borrower
50%inclusion1 decks2 decks
49%synergy
Entity Tracker
50%inclusion1 decks2 decks
44%synergy
Zur, Eternal Schemer
50%inclusion1 decks2 decks
47%synergy
Ondu Spiritdancer
50%inclusion1 decks2 decks
44%synergy
Aven Interrupter
50%inclusion1 decks2 decks
49%synergy
Alseid of Life's Bounty
50%inclusion1 decks2 decks
49%synergy
Eagles of the North
50%inclusion1 decks2 decks
49%synergy
Ledger Shredder
50%inclusion1 decks2 decks
41%synergy
Nulldrifter
50%inclusion1 decks2 decks
50%synergy
Alisaie Leveilleur
50%inclusion1 decks2 decks
41%synergy
Alphinaud Leveilleur
50%inclusion1 decks2 decks
42%synergy
Instants
Frantic Search
50%inclusion1 decks2 decks
33%synergy
Songs of the Damned
50%inclusion1 decks2 decks
50%synergy
Thirst for Meaning
50%inclusion1 decks2 decks
48%synergy
Void Rend
50%inclusion1 decks2 decks
16%synergy
Slip Out the Back
50%inclusion1 decks2 decks
49%synergy
Swan Song
50%inclusion1 decks2 decks
30%synergy
Anguished Unmaking
50%inclusion1 decks2 decks
25%synergy
Otherworldly Gaze
50%inclusion1 decks2 decks
48%synergy
Counterspell
50%inclusion1 decks2 decks
9%synergy
Long River's Pull
50%inclusion1 decks2 decks
49%synergy
Generous Gift
50%inclusion1 decks2 decks
35%synergy
Swallowed by Leviathan
50%inclusion1 decks2 decks
49%synergy
Sorceries
Space-Time Anomaly
100%inclusion1 decks1 decks
98%synergy
Windfall
50%inclusion1 decks2 decks
36%synergy
Resurgent Belief
50%inclusion1 decks2 decks
48%synergy
Replenish
50%inclusion1 decks2 decks
48%synergy
Cut Your Losses
50%inclusion1 decks2 decks
50%synergy
Extinguish All Hope
50%inclusion1 decks2 decks
48%synergy
Secret Salvage
50%inclusion1 decks2 decks
50%synergy
Dance of the Manse
50%inclusion1 decks2 decks
46%synergy
Utility Artifacts
Herald's Horn
50%inclusion1 decks2 decks
45%synergy
Archaeomancer's Map
50%inclusion1 decks2 decks
45%synergy
Enchantments
Necromancy
100%inclusion2 decks2 decks
95%synergy
Animate Dead
100%inclusion2 decks2 decks
90%synergy
Black Market Connections
100%inclusion2 decks2 decks
86%synergy
Battle at the Helvault
50%inclusion1 decks2 decks
50%synergy
Dance of the Dead
50%inclusion1 decks2 decks
48%synergy
Grasp of Fate
50%inclusion1 decks2 decks
44%synergy
Cacophony Unleashed
50%inclusion1 decks2 decks
48%synergy
Ghoulish Impetus
50%inclusion1 decks2 decks
49%synergy
Ripples of Undeath
50%inclusion1 decks2 decks
47%synergy
Near-Death Experience
50%inclusion1 decks2 decks
50%synergy
Shadow of the Second Sun
50%inclusion1 decks2 decks
48%synergy
Touch the Spirit Realm
50%inclusion1 decks2 decks
48%synergy
Spatial Binding
50%inclusion1 decks2 decks
50%synergy
Null Profusion
50%inclusion1 decks2 decks
50%synergy
Teval's Judgment
50%inclusion1 decks2 decks
49%synergy
Mirrormade
50%inclusion1 decks2 decks
40%synergy
Copy Enchantment
50%inclusion1 decks2 decks
45%synergy
Timely Ward
50%inclusion1 decks2 decks
45%synergy
Starfield of Nyx
50%inclusion1 decks2 decks
46%synergy
Cemetery Tampering
50%inclusion1 decks2 decks
49%synergy
Land Tax
50%inclusion1 decks2 decks
44%synergy
Stillness in Motion
50%inclusion1 decks2 decks
50%synergy
Mortal Combat
50%inclusion1 decks2 decks
50%synergy
Hallowed Haunting
50%inclusion1 decks2 decks
48%synergy
Tempest Technique
50%inclusion1 decks2 decks
50%synergy
Heartless Summoning
50%inclusion1 decks2 decks
50%synergy
Utility Lands
Takenuma, Abandoned Mire
100%inclusion2 decks2 decks
94%synergy
Otawara, Soaring City
100%inclusion2 decks2 decks
81%synergy
Hall of Heliod's Generosity
50%inclusion1 decks2 decks
37%synergy
Halimar Depths
50%inclusion1 decks2 decks
45%synergy
Three Tree City
50%inclusion1 decks2 decks
46%synergy
Urborg, Tomb of Yawgmoth
50%inclusion1 decks2 decks
37%synergy
Mana Artifacts
Talisman of Progress
50%inclusion1 decks2 decks
7%synergy
Arcane Signet
50%inclusion1 decks2 decks
-38%synergy
Talisman of Dominance
50%inclusion1 decks2 decks
1%synergy
Sol Ring
50%inclusion1 decks2 decks
-40%synergy
Talisman of Hierarchy
50%inclusion1 decks2 decks
6%synergy
Mind Stone
50%inclusion1 decks2 decks
37%synergy
Lands
Tundra
100%inclusion2 decks2 decks
84%synergy
Command Tower
100%inclusion2 decks2 decks
7%synergy
Undercity Sewers
100%inclusion2 decks2 decks
86%synergy
Underground Sea
100%inclusion2 decks2 decks
84%synergy
Shipwreck Marsh
100%inclusion2 decks2 decks
79%synergy
Raffine's Tower
100%inclusion2 decks2 decks
59%synergy
Island
100%inclusion2 decks2 decks
7%synergy
Scrubland
100%inclusion2 decks2 decks
84%synergy
Meticulous Archive
100%inclusion2 decks2 decks
86%synergy
Marsh Flats
100%inclusion2 decks2 decks
64%synergy
Polluted Delta
100%inclusion2 decks2 decks
62%synergy
Deserted Beach
100%inclusion2 decks2 decks
79%synergy
Hallowed Fountain
100%inclusion2 decks2 decks
51%synergy
Flooded Strand
100%inclusion2 decks2 decks
62%synergy
Watery Grave
100%inclusion2 decks2 decks
50%synergy
Prismatic Vista
50%inclusion1 decks2 decks
46%synergy
Witch Enchanter
50%inclusion1 decks2 decks
43%synergy
Misty Rainforest
50%inclusion1 decks2 decks
39%synergy
Azorius Chancery
50%inclusion1 decks2 decks
36%synergy
Shadowy Backstreet
50%inclusion1 decks2 decks
38%synergy
Exotic Orchard
50%inclusion1 decks2 decks
-9%synergy
Windswept Heath
50%inclusion1 decks2 decks
40%synergy
Bleachbone Verge
50%inclusion1 decks2 decks
41%synergy
Caves of Koilos
50%inclusion1 decks2 decks
15%synergy
Dimir Aqueduct
50%inclusion1 decks2 decks
36%synergy
Swamp
50%inclusion1 decks2 decks
-41%synergy
Hydroelectric Specimen
50%inclusion1 decks2 decks
47%synergy
Valgavoth's Lair
50%inclusion1 decks2 decks
47%synergy
Sea of Clouds
50%inclusion1 decks2 decks
14%synergy
Verdant Catacombs
50%inclusion1 decks2 decks
40%synergy
Boggart Trawler
50%inclusion1 decks2 decks
47%synergy
Godless Shrine
50%inclusion1 decks2 decks
-1%synergy
Underground River
50%inclusion1 decks2 decks
17%synergy
Orzhov Basilica
50%inclusion1 decks2 decks
34%synergy
Plains
50%inclusion1 decks2 decks
-42%synergy
Morphic Pool
50%inclusion1 decks2 decks
16%synergy
Glasspool Mimic
50%inclusion1 decks2 decks
48%synergy
Arid Mesa
50%inclusion1 decks2 decks
40%synergy
Shattered Sanctum
50%inclusion1 decks2 decks
34%synergy
Scalding Tarn
50%inclusion1 decks2 decks
39%synergy
Mana Confluence
50%inclusion1 decks2 decks
36%synergy
Adarkar Wastes
50%inclusion1 decks2 decks
19%synergy
Gloomlake Verge
50%inclusion1 decks2 decks
39%synergy
Floodfarm Verge
50%inclusion1 decks2 decks
39%synergy
City of Brass
50%inclusion1 decks2 decks
35%synergy
Bloodstained Mire
50%inclusion1 decks2 decks
39%synergy
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