The Master of Keys (Commander) - Upgraded Mill

The Master of Keys
Rank #300
49decks
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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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Eiganjo Dynastorian
17%inclusion1 decks6 decks
16%synergy
Turbulent Moor
17%inclusion1 decks6 decks
15%synergy
Primary Research
17%inclusion1 decks6 decks
17%synergy
Changing Loyalty
17%inclusion1 decks6 decks
16%synergy
Does Machines
6.7%inclusion1 decks15 decks
7%synergy
High Synergy Cards
Inquisitive Glimmer
86%inclusion42 decks49 decks
78%synergy
Gravebreaker Lamia
73%inclusion36 decks49 decks
72%synergy
Ripples of Undeath
73%inclusion36 decks49 decks
71%synergy
Entity Tracker
71%inclusion35 decks49 decks
65%synergy
Animate Dead
71%inclusion35 decks49 decks
62%synergy
Starfield Mystic
67%inclusion33 decks49 decks
61%synergy
Mesa Enchantress
69%inclusion34 decks49 decks
61%synergy
Demon of Fate's Design
63%inclusion31 decks49 decks
58%synergy
Scrabbling Skullcrab
55%inclusion27 decks49 decks
54%synergy
Doomwake Giant
59%inclusion29 decks49 decks
53%synergy
Top Cards
Mirrormade
57%inclusion28 decks49 decks
47%synergy
Fear of Sleep Paralysis
55%inclusion27 decks49 decks
50%synergy
Swords to Plowshares
55%inclusion27 decks49 decks
-13%synergy
Dress Down
55%inclusion27 decks49 decks
53%synergy
Necromancy
53%inclusion26 decks49 decks
49%synergy
Sphere of Safety
51%inclusion25 decks49 decks
42%synergy
Ondu Spiritdancer
51%inclusion25 decks49 decks
45%synergy
An Offer You Can't Refuse
49%inclusion24 decks49 decks
22%synergy
Mystic Remora
49%inclusion24 decks49 decks
28%synergy
Cemetery Tampering
49%inclusion24 decks49 decks
48%synergy
Game Changers
Smothering Tithe
31%inclusion15 decks49 decks
0%synergy
Rhystic Study
16%inclusion8 decks49 decks
-15%synergy
Demonic Tutor
12%inclusion6 decks49 decks
-8%synergy
Enlightened Tutor
12%inclusion6 decks49 decks
-7%synergy
Consecrated Sphinx
10%inclusion5 decks49 decks
4%synergy
Farewell
8.2%inclusion4 decks49 decks
-4%synergy
Teferi's Protection
6.1%inclusion3 decks49 decks
-10%synergy
Serra's Sanctum
6.1%inclusion3 decks49 decks
4%synergy
Gifts Ungiven
6.1%inclusion3 decks49 decks
4%synergy
Necropotence
6.1%inclusion3 decks49 decks
0%synergy
Creatures
Overlord of the Floodpits
45%inclusion22 decks49 decks
41%synergy
Victor, Valgavoth's Seneschal
45%inclusion22 decks49 decks
43%synergy
Overlord of the Balemurk
43%inclusion21 decks49 decks
41%synergy
Zur, Eternal Schemer
41%inclusion20 decks49 decks
38%synergy
Fear of Impostors
37%inclusion18 decks49 decks
35%synergy
Heliod, the Radiant Dawn
35%inclusion17 decks49 decks
31%synergy
Ghostly Dancers
33%inclusion16 decks49 decks
30%synergy
Silent Hallcreeper
31%inclusion15 decks49 decks
26%synergy
Enduring Curiosity
27%inclusion13 decks49 decks
19%synergy
Grim Guardian
27%inclusion13 decks49 decks
24%synergy
Sage of Mysteries
24%inclusion12 decks49 decks
24%synergy
Mindwrack Harpy
24%inclusion12 decks49 decks
24%synergy
Lotho, Corrupt Shirriff
22%inclusion11 decks49 decks
6%synergy
Abdel Adrian, Gorion's Ward
22%inclusion11 decks49 decks
21%synergy
Moon-Blessed Cleric
20%inclusion10 decks49 decks
16%synergy
Archon of Sun's Grace
18%inclusion9 decks49 decks
14%synergy
Soaring Lightbringer
18%inclusion9 decks49 decks
14%synergy
Athreos, Shroud-Veiled
18%inclusion9 decks49 decks
14%synergy
Zur the Enchanter
18%inclusion9 decks49 decks
13%synergy
Balemurk Leech
18%inclusion9 decks49 decks
18%synergy
Archetype of Imagination
16%inclusion8 decks49 decks
12%synergy
Alseid of Life's Bounty
16%inclusion8 decks49 decks
15%synergy
Overlord of the Mistmoors
14%inclusion7 decks49 decks
12%synergy
Skullsnap Nuisance
14%inclusion7 decks49 decks
14%synergy
Aminatou, Veil Piercer
14%inclusion7 decks49 decks
13%synergy
Hullbreaker Horror
14%inclusion7 decks49 decks
8%synergy
Starnheim Courser
12%inclusion6 decks49 decks
9%synergy
Witch Enchanter
12%inclusion6 decks49 decks
5%synergy
Hedron Crab
12%inclusion6 decks49 decks
12%synergy
Athreos, God of Passage
12%inclusion6 decks49 decks
11%synergy
Ancient Cellarspawn
12%inclusion6 decks49 decks
9%synergy
Grand Abolisher
12%inclusion6 decks49 decks
-2%synergy
Ledger Shredder
12%inclusion6 decks49 decks
4%synergy
Twilight Diviner
12%inclusion2 decks17 decks
10%synergy
Emet-Selch of the Third Seat
11%inclusion4 decks35 decks
2%synergy
Stenn, Paranoid Partisan
10%inclusion5 decks49 decks
9%synergy
Spirited Companion
10%inclusion5 decks49 decks
8%synergy
Laboratory Maniac
10%inclusion5 decks49 decks
7%synergy
Fear of Infinity
8.2%inclusion4 decks49 decks
8%synergy
Valley Floodcaller
8.2%inclusion4 decks49 decks
4%synergy
Esper Sentinel
8.2%inclusion4 decks49 decks
-19%synergy
Doom Whisperer
8.2%inclusion4 decks49 decks
7%synergy
Angel of Suffering
8.2%inclusion4 decks49 decks
8%synergy
Neerdiv, Devious Diver
8.2%inclusion4 decks49 decks
8%synergy
Nightmare Shepherd
8.2%inclusion4 decks49 decks
6%synergy
Auramancer
8.2%inclusion4 decks49 decks
5%synergy
Syr Konrad, the Grim
6.1%inclusion3 decks49 decks
0%synergy
The Mindskinner
6.1%inclusion3 decks49 decks
5%synergy
Lurrus of the Dream-Den
6.1%inclusion3 decks49 decks
5%synergy
Vilis, Broker of Blood
6.1%inclusion3 decks49 decks
5%synergy
Instants
Counterspell
47%inclusion23 decks49 decks
5%synergy
Arcane Denial
43%inclusion21 decks49 decks
23%synergy
Dark Ritual
37%inclusion18 decks49 decks
17%synergy
Path to Exile
37%inclusion18 decks49 decks
-6%synergy
Entomb
33%inclusion16 decks49 decks
26%synergy
Void Rend
27%inclusion13 decks49 decks
-8%synergy
Negate
24%inclusion12 decks49 decks
8%synergy
Dovin's Veto
20%inclusion10 decks49 decks
-5%synergy
Frantic Search
18%inclusion9 decks49 decks
0%synergy
Swan Song
18%inclusion9 decks49 decks
-1%synergy
Anguished Unmaking
18%inclusion9 decks49 decks
-7%synergy
Thirst for Meaning
14%inclusion7 decks49 decks
13%synergy
Strix Serenade
14%inclusion7 decks49 decks
11%synergy
Otherworldly Gaze
12%inclusion6 decks49 decks
10%synergy
Generous Gift
12%inclusion6 decks49 decks
-2%synergy
Fell the Profane
10%inclusion5 decks49 decks
1%synergy
Brainstorm
10%inclusion5 decks49 decks
-7%synergy
Cabal Ritual
10%inclusion5 decks49 decks
7%synergy
Inkshield
10%inclusion5 decks49 decks
1%synergy
Disallow
8.2%inclusion4 decks49 decks
4%synergy
Utter End
8.2%inclusion4 decks49 decks
2%synergy
Dawn's Truce
6.1%inclusion3 decks49 decks
2%synergy
Flusterstorm
6.1%inclusion3 decks49 decks
-2%synergy
Sink into Stupor
6.1%inclusion3 decks49 decks
-7%synergy
Withering Torment
6.1%inclusion3 decks49 decks
4%synergy
Sorceries
Sevinne's Reclamation
47%inclusion23 decks49 decks
38%synergy
Redress Fate
37%inclusion18 decks49 decks
31%synergy
Reanimate
31%inclusion15 decks49 decks
14%synergy
Windfall
29%inclusion14 decks49 decks
15%synergy
Dance of the Manse
29%inclusion14 decks49 decks
25%synergy
Glimpse the Unthinkable
27%inclusion13 decks49 decks
26%synergy
Singularity Rupture
24%inclusion8 decks33 decks
22%synergy
Space-Time Anomaly
21%inclusion7 decks33 decks
20%synergy
Extinguish All Hope
20%inclusion10 decks49 decks
19%synergy
Wrath of God
14%inclusion7 decks49 decks
11%synergy
Resurgent Belief
10%inclusion5 decks49 decks
8%synergy
Unmarked Grave
10%inclusion5 decks49 decks
9%synergy
Buried Alive
10%inclusion5 decks49 decks
6%synergy
Toxic Deluge
10%inclusion5 decks49 decks
-9%synergy
Traumatize
10%inclusion5 decks49 decks
10%synergy
Supreme Verdict
8.2%inclusion4 decks49 decks
-7%synergy
Austere Command
8.2%inclusion4 decks49 decks
0%synergy
Open the Vaults
8.2%inclusion4 decks49 decks
7%synergy
Time Wipe
8.2%inclusion4 decks49 decks
2%synergy
Idyllic Tutor
8.2%inclusion4 decks49 decks
4%synergy
Night's Whisper
8.2%inclusion4 decks49 decks
6%synergy
Damn
8.2%inclusion4 decks49 decks
-12%synergy
Ponder
6.1%inclusion3 decks49 decks
-3%synergy
Lively Dirge
6.1%inclusion3 decks49 decks
5%synergy
Terminus
6.1%inclusion3 decks49 decks
2%synergy
Cut Your Losses
6.1%inclusion3 decks49 decks
6%synergy
Replenish
6.1%inclusion3 decks49 decks
4%synergy
Demonic Counsel
6.1%inclusion3 decks49 decks
5%synergy
Rise of the Dark Realms
6.1%inclusion3 decks49 decks
3%synergy
Dream Harvest
5.9%inclusion1 decks17 decks
4%synergy
Utility Artifacts
Mesmeric Orb
29%inclusion14 decks49 decks
27%synergy
Cloud Key
18%inclusion9 decks49 decks
15%synergy
Lightning Greaves
16%inclusion8 decks49 decks
-6%synergy
Swiftfoot Boots
14%inclusion7 decks49 decks
-10%synergy
Pearl Medallion
6.1%inclusion3 decks49 decks
5%synergy
Wayfarer's Bauble
6.1%inclusion3 decks49 decks
-1%synergy
Whip of Erebos
6.1%inclusion3 decks49 decks
4%synergy
Enchantments
Secret Arcade // Dusty Parlor
49%inclusion24 decks49 decks
44%synergy
Grasp of Fate
47%inclusion23 decks49 decks
41%synergy
Estrid's Invocation
47%inclusion23 decks49 decks
42%synergy
Propaganda
47%inclusion23 decks49 decks
19%synergy
Amphibian Downpour
45%inclusion22 decks49 decks
40%synergy
Seal of Cleansing
45%inclusion22 decks49 decks
43%synergy
Sigil of the Empty Throne
39%inclusion19 decks49 decks
33%synergy
Blind Obedience
39%inclusion19 decks49 decks
27%synergy
Ghostly Prison
37%inclusion18 decks49 decks
14%synergy
Stillness in Motion
35%inclusion15 decks43 decks
34%synergy
Cacophony Unleashed
33%inclusion16 decks49 decks
31%synergy
Out of the Tombs
33%inclusion16 decks49 decks
32%synergy
Dance of the Dead
29%inclusion14 decks49 decks
26%synergy
Monologue Tax
29%inclusion14 decks49 decks
22%synergy
Starfield of Nyx
29%inclusion14 decks49 decks
25%synergy
Timely Ward
27%inclusion13 decks49 decks
22%synergy
Copy Enchantment
27%inclusion13 decks49 decks
22%synergy
Polluted Cistern // Dim Oubliette
27%inclusion13 decks49 decks
26%synergy
Greater Auramancy
27%inclusion13 decks49 decks
22%synergy
The Meathook Massacre
24%inclusion12 decks49 decks
21%synergy
Touch the Spirit Realm
24%inclusion12 decks49 decks
22%synergy
The Tale of Tamiyo
24%inclusion12 decks49 decks
24%synergy
Secrets of the Dead
24%inclusion12 decks49 decks
24%synergy
Defiled Crypt // Cadaver Lab
24%inclusion12 decks49 decks
24%synergy
Darksteel Mutation
22%inclusion11 decks49 decks
16%synergy
Court of Cunning
22%inclusion11 decks49 decks
21%synergy
Leyline of Anticipation
22%inclusion11 decks49 decks
18%synergy
Seal of Removal
22%inclusion11 decks49 decks
22%synergy
Extravagant Replication
20%inclusion10 decks49 decks
15%synergy
Authority of the Consuls
20%inclusion10 decks49 decks
8%synergy
All That Glitters
20%inclusion10 decks49 decks
12%synergy
Hallowed Haunting
20%inclusion10 decks49 decks
18%synergy
Ethereal Armor
20%inclusion10 decks49 decks
16%synergy
Phyrexian Arena
20%inclusion10 decks49 decks
6%synergy
Teval's Judgment
18%inclusion8 decks44 decks
17%synergy
Imprisoned in the Moon
16%inclusion8 decks49 decks
10%synergy
Shark Typhoon
16%inclusion8 decks49 decks
11%synergy
Restricted Office // Lecture Hall
14%inclusion7 decks49 decks
12%synergy
Sheltered by Ghosts
14%inclusion7 decks49 decks
12%synergy
Static Prison
14%inclusion7 decks49 decks
14%synergy
Aura of Silence
14%inclusion7 decks49 decks
11%synergy
One with the Multiverse
12%inclusion6 decks49 decks
8%synergy
Nowhere to Run
12%inclusion6 decks49 decks
11%synergy
Virtue of Persistence
12%inclusion6 decks49 decks
11%synergy
Solitary Confinement
12%inclusion6 decks49 decks
10%synergy
The Eldest Reborn
10%inclusion5 decks49 decks
8%synergy
Omniscience
10%inclusion5 decks49 decks
6%synergy
Bottomless Pool // Locker Room
10%inclusion5 decks49 decks
8%synergy
Oubliette
10%inclusion5 decks49 decks
9%synergy
Unable to Scream
8.2%inclusion4 decks49 decks
7%synergy
Planeswalkers
Jace, the Perfected Mind
6.1%inclusion3 decks49 decks
6%synergy
Utility Lands
Hall of Heliod's Generosity
63%inclusion31 decks49 decks
50%synergy
Bojuka Bog
43%inclusion21 decks49 decks
16%synergy
Cephalid Coliseum
22%inclusion11 decks49 decks
19%synergy
Reliquary Tower
16%inclusion8 decks49 decks
-18%synergy
Otawara, Soaring City
14%inclusion7 decks49 decks
-5%synergy
Halimar Depths
12%inclusion6 decks49 decks
8%synergy
Nephalia Drownyard
10%inclusion5 decks49 decks
10%synergy
Takenuma, Abandoned Mire
10%inclusion5 decks49 decks
4%synergy
Mystic Sanctuary
8.2%inclusion4 decks49 decks
4%synergy
Geier Reach Sanitarium
6.1%inclusion3 decks49 decks
2%synergy
Urborg, Tomb of Yawgmoth
6.1%inclusion3 decks49 decks
-7%synergy
Vault of the Archangel
6.1%inclusion3 decks49 decks
0%synergy
Adagia, Windswept Bastion
6.1%inclusion2 decks33 decks
4%synergy
Ishgard, the Holy See
5.7%inclusion2 decks35 decks
2%synergy
Mana Artifacts
Sol Ring
88%inclusion43 decks49 decks
-2%synergy
Arcane Signet
84%inclusion41 decks49 decks
-4%synergy
Talisman of Dominance
59%inclusion29 decks49 decks
9%synergy
Talisman of Progress
57%inclusion28 decks49 decks
13%synergy
Talisman of Hierarchy
57%inclusion28 decks49 decks
13%synergy
Fellwar Stone
35%inclusion17 decks49 decks
2%synergy
Azorius Signet
35%inclusion17 decks49 decks
4%synergy
Orzhov Signet
31%inclusion15 decks49 decks
-2%synergy
Dimir Signet
24%inclusion12 decks49 decks
-6%synergy
Commander's Sphere
12%inclusion6 decks49 decks
-6%synergy
Mind Stone
12%inclusion6 decks49 decks
0%synergy
Chromatic Lantern
6.1%inclusion3 decks49 decks
-7%synergy
Lands
Command Tower
100%inclusion49 decks49 decks
7%synergy
Swamp
96%inclusion47 decks49 decks
4%synergy
Island
96%inclusion47 decks49 decks
3%synergy
Plains
96%inclusion47 decks49 decks
4%synergy
Exotic Orchard
71%inclusion35 decks49 decks
13%synergy
Adarkar Wastes
67%inclusion33 decks49 decks
35%synergy
Caves of Koilos
65%inclusion32 decks49 decks
30%synergy
Arcane Sanctum
61%inclusion30 decks49 decks
7%synergy
Underground River
61%inclusion30 decks49 decks
27%synergy
Isolated Chapel
51%inclusion25 decks49 decks
10%synergy
Watery Grave
49%inclusion24 decks49 decks
-2%synergy
Glacial Fortress
47%inclusion23 decks49 decks
5%synergy
Godless Shrine
47%inclusion23 decks49 decks
-4%synergy
Polluted Delta
45%inclusion22 decks49 decks
7%synergy
Hallowed Fountain
45%inclusion22 decks49 decks
-6%synergy
Flooded Strand
43%inclusion21 decks49 decks
4%synergy
Prairie Stream
39%inclusion19 decks49 decks
-2%synergy
Drowned Catacomb
39%inclusion19 decks49 decks
1%synergy
Marsh Flats
39%inclusion19 decks49 decks
3%synergy
Raffine's Tower
37%inclusion18 decks49 decks
-4%synergy
Sunken Hollow
37%inclusion18 decks49 decks
-3%synergy
Vault of Champions
37%inclusion18 decks49 decks
4%synergy
Shadowy Backstreet
35%inclusion17 decks49 decks
22%synergy
Valgavoth's Lair
35%inclusion17 decks49 decks
32%synergy
Evolving Wilds
35%inclusion17 decks49 decks
10%synergy
Meticulous Archive
35%inclusion17 decks49 decks
21%synergy
Undercity Sewers
33%inclusion16 decks49 decks
18%synergy
Sea of Clouds
33%inclusion16 decks49 decks
-2%synergy
Temple of Silence
33%inclusion16 decks49 decks
14%synergy
Terramorphic Expanse
31%inclusion15 decks49 decks
15%synergy
Temple of Deceit
31%inclusion15 decks49 decks
13%synergy
Temple of Enlightenment
31%inclusion15 decks49 decks
15%synergy
Morphic Pool
31%inclusion15 decks49 decks
-3%synergy
Floodfarm Verge
27%inclusion13 decks49 decks
15%synergy
Azorius Chancery
24%inclusion12 decks49 decks
11%synergy
Dimir Aqueduct
24%inclusion12 decks49 decks
11%synergy
Gloomlake Verge
24%inclusion12 decks49 decks
14%synergy
Obscura Storefront
22%inclusion11 decks49 decks
13%synergy
Deserted Beach
22%inclusion11 decks49 decks
2%synergy
Shipwreck Marsh
20%inclusion10 decks49 decks
0%synergy
Contaminated Landscape
18%inclusion9 decks49 decks
5%synergy
Ash Barrens
18%inclusion9 decks49 decks
8%synergy
Orzhov Basilica
18%inclusion9 decks49 decks
3%synergy
Tainted Isle
14%inclusion7 decks49 decks
8%synergy
Tundra
14%inclusion7 decks49 decks
-2%synergy
Myriad Landscape
14%inclusion7 decks49 decks
6%synergy
Underground Sea
14%inclusion7 decks49 decks
-1%synergy
Fetid Heath
14%inclusion7 decks49 decks
1%synergy
Tainted Field
14%inclusion7 decks49 decks
7%synergy
Skycloud Expanse
14%inclusion7 decks49 decks
-1%synergy
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