The Master of Keys (Commander) - Expensive Upgraded Mill

The Master of Keys
Rank #304
5decks
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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
Planeswalkers
Utility Lands
Mana Artifacts
Lands
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Necromancy
100%inclusion5 decks5 decks
96%synergy
Entomb
100%inclusion5 decks5 decks
93%synergy
Gravebreaker Lamia
80%inclusion4 decks5 decks
79%synergy
Dance of the Dead
80%inclusion4 decks5 decks
78%synergy
Ripples of Undeath
80%inclusion4 decks5 decks
77%synergy
Inquisitive Glimmer
80%inclusion4 decks5 decks
73%synergy
Animate Dead
80%inclusion4 decks5 decks
70%synergy
Game Changers
Smothering Tithe
60%inclusion3 decks5 decks
30%synergy
Ancient Tomb
60%inclusion3 decks5 decks
48%synergy
Serra's Sanctum
40%inclusion2 decks5 decks
38%synergy
Intuition
40%inclusion2 decks5 decks
38%synergy
Rhystic Study
40%inclusion2 decks5 decks
10%synergy
Mana Vault
40%inclusion2 decks5 decks
31%synergy
Demonic Tutor
40%inclusion2 decks5 decks
20%synergy
Imperial Seal
20%inclusion1 decks5 decks
13%synergy
Thassa's Oracle
20%inclusion1 decks5 decks
11%synergy
Grim Monolith
20%inclusion1 decks5 decks
17%synergy
Creatures
Witch Enchanter
60%inclusion3 decks5 decks
53%synergy
Starfield Mystic
60%inclusion3 decks5 decks
54%synergy
Fear of Impostors
60%inclusion3 decks5 decks
59%synergy
Stenn, Paranoid Partisan
40%inclusion2 decks5 decks
39%synergy
Scrabbling Skullcrab
40%inclusion2 decks5 decks
39%synergy
Doom Whisperer
40%inclusion2 decks5 decks
39%synergy
Demon of Fate's Design
40%inclusion2 decks5 decks
35%synergy
Esper Sentinel
40%inclusion2 decks5 decks
13%synergy
Hedron Crab
40%inclusion2 decks5 decks
39%synergy
Mesa Enchantress
40%inclusion2 decks5 decks
31%synergy
Angel of Suffering
40%inclusion2 decks5 decks
40%synergy
Laboratory Maniac
40%inclusion2 decks5 decks
37%synergy
Doomwake Giant
40%inclusion2 decks5 decks
34%synergy
Entity Tracker
40%inclusion2 decks5 decks
34%synergy
Mirror-Mad Phantasm
40%inclusion2 decks5 decks
40%synergy
Phenax, God of Deception
20%inclusion1 decks5 decks
20%synergy
Heliod's Pilgrim
20%inclusion1 decks5 decks
19%synergy
Lotho, Corrupt Shirriff
20%inclusion1 decks5 decks
3%synergy
Syr Konrad, the Grim
20%inclusion1 decks5 decks
15%synergy
Light-Paws, Emperor's Voice
20%inclusion1 decks5 decks
19%synergy
Overlord of the Floodpits
20%inclusion1 decks5 decks
17%synergy
Consecrated Sphinx
20%inclusion1 decks5 decks
14%synergy
Y'shtola, Night's Blessed
20%inclusion1 decks5 decks
19%synergy
Sheoldred, the Apocalypse
20%inclusion1 decks5 decks
11%synergy
Baleful Strix
20%inclusion1 decks5 decks
-1%synergy
Gray Merchant of Asphodel
20%inclusion1 decks5 decks
15%synergy
Defiler of Flesh
20%inclusion1 decks5 decks
20%synergy
Valley Floodcaller
20%inclusion1 decks5 decks
16%synergy
Kami of False Hope
20%inclusion1 decks5 decks
20%synergy
Agent of Treachery
20%inclusion1 decks5 decks
18%synergy
Hydroelectric Specimen
20%inclusion1 decks5 decks
17%synergy
Sage of Mysteries
20%inclusion1 decks5 decks
20%synergy
Overlord of the Balemurk
20%inclusion1 decks5 decks
18%synergy
Boonweaver Giant
20%inclusion1 decks5 decks
20%synergy
Victor, Valgavoth's Seneschal
20%inclusion1 decks5 decks
18%synergy
Pearl-Ear, Imperial Advisor
20%inclusion1 decks5 decks
18%synergy
Fear of Sleep Paralysis
20%inclusion1 decks5 decks
15%synergy
Stormscape Familiar
20%inclusion1 decks5 decks
17%synergy
Faerie Mastermind
20%inclusion1 decks5 decks
10%synergy
Warren Soultrader
20%inclusion1 decks5 decks
16%synergy
Neerdiv, Devious Diver
20%inclusion1 decks5 decks
20%synergy
Voice of Victory
20%inclusion1 decks5 decks
12%synergy
Mockingbird
20%inclusion1 decks5 decks
16%synergy
Lazav, the Multifarious
20%inclusion1 decks5 decks
20%synergy
Heliod, the Radiant Dawn
20%inclusion1 decks5 decks
17%synergy
Grand Abolisher
20%inclusion1 decks5 decks
6%synergy
Abdel Adrian, Gorion's Ward
20%inclusion1 decks5 decks
18%synergy
Ranger-Captain of Eos
20%inclusion1 decks5 decks
14%synergy
Alseid of Life's Bounty
20%inclusion1 decks5 decks
19%synergy
Hullbreaker Horror
20%inclusion1 decks5 decks
14%synergy
Instants
Dark Ritual
60%inclusion3 decks5 decks
40%synergy
Sink into Stupor
60%inclusion3 decks5 decks
47%synergy
Fell the Profane
40%inclusion2 decks5 decks
31%synergy
Brain Freeze
40%inclusion2 decks5 decks
39%synergy
Cabal Ritual
40%inclusion2 decks5 decks
37%synergy
Swan Song
40%inclusion2 decks5 decks
20%synergy
Otherworldly Gaze
40%inclusion2 decks5 decks
38%synergy
Deadly Rollick
20%inclusion1 decks5 decks
4%synergy
Mental Misstep
20%inclusion1 decks5 decks
14%synergy
Tainted Pact
20%inclusion1 decks5 decks
13%synergy
An Offer You Can't Refuse
20%inclusion1 decks5 decks
-8%synergy
Disrupting Shoal
20%inclusion1 decks5 decks
20%synergy
Mindbreak Trap
20%inclusion1 decks5 decks
13%synergy
Gifts Ungiven
20%inclusion1 decks5 decks
17%synergy
Darkblast
20%inclusion1 decks5 decks
20%synergy
Angel's Grace
20%inclusion1 decks5 decks
17%synergy
Mana Drain
20%inclusion1 decks5 decks
3%synergy
Flusterstorm
20%inclusion1 decks5 decks
12%synergy
Silence
20%inclusion1 decks5 decks
10%synergy
Into the Flood Maw
20%inclusion1 decks5 decks
16%synergy
Force of Will
20%inclusion1 decks5 decks
8%synergy
Demonic Consultation
20%inclusion1 decks5 decks
12%synergy
Malakir Rebirth
20%inclusion1 decks5 decks
15%synergy
Arcane Denial
20%inclusion1 decks5 decks
-0%synergy
Force of Negation
20%inclusion1 decks5 decks
8%synergy
Commandeer
20%inclusion1 decks5 decks
19%synergy
Swords to Plowshares
20%inclusion1 decks5 decks
-48%synergy
Mission Briefing
20%inclusion1 decks5 decks
20%synergy
Enlightened Tutor
20%inclusion1 decks5 decks
1%synergy
Borne Upon a Wind
20%inclusion1 decks5 decks
15%synergy
Fierce Guardianship
20%inclusion1 decks5 decks
-0%synergy
Sudden Substitution
20%inclusion1 decks5 decks
20%synergy
Vampiric Tutor
20%inclusion1 decks5 decks
3%synergy
Pact of Negation
20%inclusion1 decks5 decks
13%synergy
Mystical Tutor
20%inclusion1 decks5 decks
9%synergy
Sorceries
Glimpse the Unthinkable
60%inclusion3 decks5 decks
60%synergy
Replenish
40%inclusion2 decks5 decks
38%synergy
Reanimate
40%inclusion2 decks5 decks
24%synergy
Beseech the Mirror
40%inclusion2 decks5 decks
36%synergy
Diabolic Intent
20%inclusion1 decks5 decks
15%synergy
Resurgent Belief
20%inclusion1 decks5 decks
18%synergy
Sevinne's Reclamation
20%inclusion1 decks5 decks
11%synergy
Sea Gate Restoration
20%inclusion1 decks5 decks
17%synergy
Agadeem's Awakening
20%inclusion1 decks5 decks
18%synergy
Scheming Symmetry
20%inclusion1 decks5 decks
19%synergy
Buried Alive
20%inclusion1 decks5 decks
16%synergy
Living Death
20%inclusion1 decks5 decks
15%synergy
Mnemonic Betrayal
20%inclusion1 decks5 decks
17%synergy
Breach the Multiverse
20%inclusion1 decks5 decks
18%synergy
Space-Time Anomaly
20%inclusion1 decks5 decks
18%synergy
Flash Photography
20%inclusion1 decks5 decks
19%synergy
Utility Artifacts
Mesmeric Orb
60%inclusion3 decks5 decks
59%synergy
Perpetual Timepiece
20%inclusion1 decks5 decks
20%synergy
Crucible of Worlds
20%inclusion1 decks5 decks
19%synergy
Enchantments
Out of the Tombs
60%inclusion3 decks5 decks
60%synergy
Amphibian Downpour
60%inclusion3 decks5 decks
55%synergy
Seal of Cleansing
60%inclusion3 decks5 decks
59%synergy
Static Prison
60%inclusion3 decks5 decks
60%synergy
Dress Down
60%inclusion3 decks5 decks
58%synergy
Stillness in Motion
60%inclusion3 decks5 decks
60%synergy
Cacophony Unleashed
40%inclusion2 decks5 decks
38%synergy
Court of Cunning
40%inclusion2 decks5 decks
39%synergy
Imprisoned in the Moon
40%inclusion2 decks5 decks
33%synergy
Chronic Flooding
40%inclusion2 decks5 decks
40%synergy
Authority of the Consuls
40%inclusion2 decks5 decks
27%synergy
Mirrormade
40%inclusion2 decks5 decks
30%synergy
Estrid's Invocation
40%inclusion2 decks5 decks
35%synergy
Copy Enchantment
40%inclusion2 decks5 decks
35%synergy
Mystic Remora
40%inclusion2 decks5 decks
20%synergy
Sphere of Safety
40%inclusion2 decks5 decks
31%synergy
Leyline of Anticipation
40%inclusion2 decks5 decks
36%synergy
No Mercy
40%inclusion2 decks5 decks
37%synergy
Solitary Confinement
40%inclusion2 decks5 decks
38%synergy
Greater Auramancy
40%inclusion2 decks5 decks
36%synergy
Ghostly Prison
40%inclusion2 decks5 decks
17%synergy
Propaganda
40%inclusion2 decks5 decks
11%synergy
Seal of Removal
40%inclusion2 decks5 decks
39%synergy
Aang's Iceberg
40%inclusion2 decks5 decks
40%synergy
Chakra Meditation
40%inclusion2 decks5 decks
40%synergy
Darksteel Mutation
20%inclusion1 decks5 decks
14%synergy
Momentum Breaker
20%inclusion1 decks5 decks
20%synergy
Counterbalance
20%inclusion1 decks5 decks
18%synergy
Parallax Wave
20%inclusion1 decks5 decks
20%synergy
Lunarch Mantle
20%inclusion1 decks5 decks
20%synergy
Founding the Third Path
20%inclusion1 decks5 decks
20%synergy
Grasp of Fate
20%inclusion1 decks5 decks
14%synergy
Trapped in the Screen
20%inclusion1 decks5 decks
20%synergy
Songbirds' Blessing
20%inclusion1 decks5 decks
19%synergy
Dark Privilege
20%inclusion1 decks5 decks
20%synergy
Dissipation Field
20%inclusion1 decks5 decks
19%synergy
Tinybones Joins Up
20%inclusion1 decks5 decks
19%synergy
Moat
20%inclusion1 decks5 decks
20%synergy
Mystic Veil
20%inclusion1 decks5 decks
20%synergy
Leyline of Sanctity
20%inclusion1 decks5 decks
19%synergy
Life Insurance
20%inclusion1 decks5 decks
19%synergy
Soul Snare
20%inclusion1 decks5 decks
20%synergy
Touch the Spirit Realm
20%inclusion1 decks5 decks
18%synergy
Blind Obedience
20%inclusion1 decks5 decks
8%synergy
Attunement
20%inclusion1 decks5 decks
20%synergy
Case of the Stashed Skeleton
20%inclusion1 decks5 decks
20%synergy
Dance of Many
20%inclusion1 decks5 decks
20%synergy
Omniscience
20%inclusion1 decks5 decks
16%synergy
Mantle of the Ancients
20%inclusion1 decks5 decks
17%synergy
Boon of the Spirit Realm
20%inclusion1 decks5 decks
19%synergy
Planeswalkers
Jace, the Perfected Mind
40%inclusion2 decks5 decks
40%synergy
Jace, Wielder of Mysteries
20%inclusion1 decks5 decks
18%synergy
Ashiok, Dream Render
20%inclusion1 decks5 decks
19%synergy
Ashiok, Sculptor of Fears
20%inclusion1 decks5 decks
20%synergy
Utility Lands
Phyrexian Tower
40%inclusion2 decks5 decks
36%synergy
Otawara, Soaring City
40%inclusion2 decks5 decks
21%synergy
Minamo, School at Water's Edge
20%inclusion1 decks5 decks
16%synergy
Mystic Sanctuary
20%inclusion1 decks5 decks
16%synergy
Urza's Saga
20%inclusion1 decks5 decks
8%synergy
Spymaster's Vault
20%inclusion1 decks5 decks
18%synergy
Command Beacon
20%inclusion1 decks5 decks
17%synergy
Nykthos, Shrine to Nyx
20%inclusion1 decks5 decks
19%synergy
Academy Ruins
20%inclusion1 decks5 decks
13%synergy
Takenuma, Abandoned Mire
20%inclusion1 decks5 decks
14%synergy
Petrified Field
20%inclusion1 decks5 decks
20%synergy
City of Traitors
20%inclusion1 decks5 decks
19%synergy
Mana Artifacts
Sol Ring
100%inclusion5 decks5 decks
10%synergy
Arcane Signet
60%inclusion3 decks5 decks
-28%synergy
Talisman of Dominance
40%inclusion2 decks5 decks
-10%synergy
Talisman of Progress
20%inclusion1 decks5 decks
-24%synergy
Lotus Petal
20%inclusion1 decks5 decks
10%synergy
Fellwar Stone
20%inclusion1 decks5 decks
-13%synergy
Talisman of Hierarchy
20%inclusion1 decks5 decks
-25%synergy
Chrome Mox
20%inclusion1 decks5 decks
11%synergy
Mox Diamond
20%inclusion1 decks5 decks
13%synergy
Lands
Tundra
100%inclusion5 decks5 decks
84%synergy
Command Tower
100%inclusion5 decks5 decks
7%synergy
Undercity Sewers
100%inclusion5 decks5 decks
85%synergy
Underground Sea
100%inclusion5 decks5 decks
84%synergy
Godless Shrine
100%inclusion5 decks5 decks
48%synergy
Scrubland
100%inclusion5 decks5 decks
84%synergy
Marsh Flats
100%inclusion5 decks5 decks
64%synergy
Polluted Delta
100%inclusion5 decks5 decks
62%synergy
Hallowed Fountain
100%inclusion5 decks5 decks
49%synergy
Flooded Strand
100%inclusion5 decks5 decks
61%synergy
Watery Grave
100%inclusion5 decks5 decks
49%synergy
Misty Rainforest
80%inclusion4 decks5 decks
69%synergy
Shadowy Backstreet
80%inclusion4 decks5 decks
67%synergy
Exotic Orchard
80%inclusion4 decks5 decks
21%synergy
Windswept Heath
80%inclusion4 decks5 decks
71%synergy
Swamp
80%inclusion4 decks5 decks
-12%synergy
Arid Mesa
80%inclusion4 decks5 decks
71%synergy
Scalding Tarn
80%inclusion4 decks5 decks
69%synergy
Meticulous Archive
80%inclusion4 decks5 decks
66%synergy
Mana Confluence
80%inclusion4 decks5 decks
66%synergy
City of Brass
80%inclusion4 decks5 decks
65%synergy
Witch Enchanter
60%inclusion3 decks5 decks
53%synergy
Caves of Koilos
60%inclusion3 decks5 decks
24%synergy
Sea of Clouds
60%inclusion3 decks5 decks
25%synergy
Verdant Catacombs
60%inclusion3 decks5 decks
50%synergy
Island
60%inclusion3 decks5 decks
-33%synergy
Sink into Stupor
60%inclusion3 decks5 decks
47%synergy
Morphic Pool
60%inclusion3 decks5 decks
26%synergy
Vault of Champions
60%inclusion3 decks5 decks
28%synergy
Bloodstained Mire
60%inclusion3 decks5 decks
49%synergy
Fell the Profane
40%inclusion2 decks5 decks
31%synergy
Raffine's Tower
40%inclusion2 decks5 decks
-1%synergy
Isolated Chapel
40%inclusion2 decks5 decks
-2%synergy
Underground River
40%inclusion2 decks5 decks
5%synergy
Plains
40%inclusion2 decks5 decks
-52%synergy
Adarkar Wastes
40%inclusion2 decks5 decks
7%synergy
Gloomlake Verge
40%inclusion2 decks5 decks
29%synergy
Floodfarm Verge
40%inclusion2 decks5 decks
29%synergy
Glacial Fortress
20%inclusion1 decks5 decks
-23%synergy
Prismatic Vista
20%inclusion1 decks5 decks
16%synergy
Bleachbone Verge
20%inclusion1 decks5 decks
11%synergy
Sea Gate Restoration
20%inclusion1 decks5 decks
17%synergy
Agadeem's Awakening
20%inclusion1 decks5 decks
18%synergy
Hydroelectric Specimen
20%inclusion1 decks5 decks
17%synergy
Shipwreck Marsh
20%inclusion1 decks5 decks
-1%synergy
Reflecting Pool
20%inclusion1 decks5 decks
12%synergy
Drowned Catacomb
20%inclusion1 decks5 decks
-18%synergy
Talon Gates of Madara
20%inclusion1 decks5 decks
19%synergy
Malakir Rebirth
20%inclusion1 decks5 decks
15%synergy
Snow-Covered Plains
20%inclusion1 decks5 decks
17%synergy
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