The Master of Keys (Commander) - Mill

The Master of Keys
Rank #303
332decks
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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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Lands
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Super Intelligence
4.5%inclusion1 decks22 decks
4%synergy
King T'Challa
4.2%inclusion1 decks24 decks
3%synergy
High Synergy Cards
Ripples of Undeath
63%inclusion209 decks332 decks
60%synergy
Animate Dead
69%inclusion228 decks332 decks
59%synergy
Inquisitive Glimmer
62%inclusion207 decks332 decks
55%synergy
Necromancy
58%inclusion194 decks332 decks
54%synergy
Dress Down
55%inclusion182 decks332 decks
53%synergy
Entity Tracker
51%inclusion169 decks332 decks
45%synergy
Mesa Enchantress
53%inclusion175 decks332 decks
44%synergy
Scrabbling Skullcrab
45%inclusion148 decks332 decks
44%synergy
Gravebreaker Lamia
44%inclusion145 decks332 decks
43%synergy
Starfield Mystic
47%inclusion155 decks332 decks
40%synergy
Top Cards
Mystic Remora
58%inclusion194 decks332 decks
38%synergy
Swords to Plowshares
56%inclusion187 decks332 decks
-11%synergy
Sevinne's Reclamation
47%inclusion156 decks332 decks
38%synergy
Entomb
43%inclusion142 decks332 decks
36%synergy
Demon of Fate's Design
42%inclusion141 decks332 decks
37%synergy
Dance of the Dead
41%inclusion137 decks332 decks
39%synergy
Overlord of the Balemurk
41%inclusion137 decks332 decks
39%synergy
Dark Ritual
40%inclusion132 decks332 decks
20%synergy
Doomwake Giant
38%inclusion127 decks332 decks
33%synergy
Mirrormade
38%inclusion125 decks332 decks
28%synergy
Game Changers
Smothering Tithe
48%inclusion161 decks332 decks
18%synergy
Rhystic Study
43%inclusion142 decks332 decks
12%synergy
Enlightened Tutor
38%inclusion127 decks332 decks
20%synergy
Demonic Tutor
31%inclusion103 decks332 decks
11%synergy
Thassa's Oracle
28%inclusion93 decks332 decks
19%synergy
Ancient Tomb
26%inclusion85 decks332 decks
13%synergy
Vampiric Tutor
26%inclusion85 decks332 decks
9%synergy
Force of Will
23%inclusion78 decks332 decks
11%synergy
Mana Vault
23%inclusion75 decks332 decks
14%synergy
Fierce Guardianship
22%inclusion74 decks332 decks
2%synergy
Creatures
Overlord of the Floodpits
37%inclusion124 decks332 decks
34%synergy
Fear of Sleep Paralysis
36%inclusion120 decks332 decks
31%synergy
Victor, Valgavoth's Seneschal
34%inclusion112 decks332 decks
32%synergy
Fear of Impostors
32%inclusion107 decks332 decks
31%synergy
Esper Sentinel
31%inclusion103 decks332 decks
4%synergy
Abdel Adrian, Gorion's Ward
31%inclusion103 decks332 decks
29%synergy
Ondu Spiritdancer
30%inclusion100 decks332 decks
24%synergy
Zur, Eternal Schemer
26%inclusion87 decks332 decks
23%synergy
Lotho, Corrupt Shirriff
26%inclusion86 decks332 decks
9%synergy
Grand Abolisher
25%inclusion83 decks332 decks
11%synergy
Ghostly Dancers
23%inclusion78 decks332 decks
21%synergy
Silent Hallcreeper
23%inclusion75 decks332 decks
18%synergy
Heliod, the Radiant Dawn
23%inclusion75 decks332 decks
19%synergy
Grim Guardian
21%inclusion71 decks332 decks
19%synergy
Zur the Enchanter
21%inclusion69 decks332 decks
16%synergy
Enduring Curiosity
21%inclusion69 decks332 decks
13%synergy
Orcish Bowmasters
20%inclusion68 decks332 decks
10%synergy
Valley Floodcaller
20%inclusion66 decks332 decks
16%synergy
Hedron Crab
20%inclusion66 decks332 decks
19%synergy
Mindwrack Harpy
20%inclusion65 decks332 decks
19%synergy
Hullbreaker Horror
18%inclusion61 decks332 decks
12%synergy
Ranger-Captain of Eos
17%inclusion57 decks332 decks
11%synergy
Displacer Kitten
16%inclusion52 decks332 decks
9%synergy
Sage of Mysteries
16%inclusion52 decks332 decks
15%synergy
Ledger Shredder
15%inclusion51 decks332 decks
7%synergy
Alseid of Life's Bounty
15%inclusion50 decks332 decks
14%synergy
Wan Shi Tong, Librarian
15%inclusion17 decks114 decks
10%synergy
Moon-Blessed Cleric
14%inclusion48 decks332 decks
10%synergy
Soaring Lightbringer
14%inclusion47 decks332 decks
10%synergy
Archon of Sun's Grace
14%inclusion46 decks332 decks
10%synergy
Skullsnap Nuisance
14%inclusion46 decks332 decks
13%synergy
Aminatou, Veil Piercer
14%inclusion45 decks332 decks
12%synergy
Lurrus of the Dream-Den
13%inclusion44 decks332 decks
12%synergy
Overlord of the Mistmoors
13%inclusion43 decks332 decks
11%synergy
Voice of Victory
12%inclusion23 decks194 decks
3%synergy
Balemurk Leech
11%inclusion36 decks332 decks
10%synergy
Laboratory Maniac
11%inclusion36 decks332 decks
8%synergy
Mockingbird
11%inclusion36 decks332 decks
7%synergy
Opposition Agent
11%inclusion35 decks332 decks
3%synergy
Ancient Cellarspawn
10%inclusion34 decks332 decks
7%synergy
The Mindskinner
10%inclusion33 decks332 decks
9%synergy
Drannith Magistrate
10%inclusion33 decks332 decks
2%synergy
Stitcher's Supplier
10%inclusion32 decks332 decks
9%synergy
Spirited Companion
10%inclusion32 decks332 decks
8%synergy
Millikin
9.3%inclusion31 decks332 decks
9%synergy
Nashi, Searcher in the Dark
9.0%inclusion30 decks332 decks
9%synergy
Archivist of Oghma
8.7%inclusion29 decks332 decks
2%synergy
Gremlin Tamer
8.7%inclusion29 decks332 decks
8%synergy
Tataru Taru
8.3%inclusion14 decks169 decks
-0%synergy
Athreos, Shroud-Veiled
8.1%inclusion27 decks332 decks
4%synergy
Instants
An Offer You Can't Refuse
34%inclusion112 decks332 decks
6%synergy
Counterspell
32%inclusion107 decks332 decks
-10%synergy
Swan Song
29%inclusion95 decks332 decks
9%synergy
Path to Exile
27%inclusion88 decks332 decks
-16%synergy
Arcane Denial
24%inclusion80 decks332 decks
4%synergy
Silence
23%inclusion78 decks332 decks
14%synergy
Force of Negation
20%inclusion67 decks332 decks
8%synergy
Demonic Consultation
20%inclusion66 decks332 decks
12%synergy
Flusterstorm
20%inclusion65 decks332 decks
12%synergy
Intuition
19%inclusion63 decks332 decks
17%synergy
Tainted Pact
19%inclusion62 decks332 decks
12%synergy
Dovin's Veto
19%inclusion62 decks332 decks
-8%synergy
Void Rend
19%inclusion62 decks332 decks
-16%synergy
Mental Misstep
18%inclusion61 decks332 decks
12%synergy
Cabal Ritual
18%inclusion60 decks332 decks
15%synergy
Cyclonic Rift
18%inclusion60 decks332 decks
-5%synergy
Frantic Search
17%inclusion58 decks332 decks
-1%synergy
Borne Upon a Wind
17%inclusion58 decks332 decks
13%synergy
Mystical Tutor
17%inclusion58 decks332 decks
7%synergy
Mindbreak Trap
17%inclusion57 decks332 decks
11%synergy
Pact of Negation
17%inclusion56 decks332 decks
10%synergy
Sink into Stupor
16%inclusion53 decks332 decks
3%synergy
Otherworldly Gaze
15%inclusion51 decks332 decks
13%synergy
Mana Drain
15%inclusion49 decks332 decks
-2%synergy
Thirst for Meaning
13%inclusion44 decks332 decks
12%synergy
Gifts Ungiven
12%inclusion40 decks332 decks
9%synergy
Negate
11%inclusion36 decks332 decks
-5%synergy
Into the Flood Maw
11%inclusion36 decks332 decks
7%synergy
Anguished Unmaking
8.7%inclusion29 decks332 decks
-17%synergy
Fell the Profane
8.1%inclusion27 decks332 decks
-1%synergy
Brainstorm
8.1%inclusion27 decks332 decks
-9%synergy
Chain of Vapor
7.8%inclusion26 decks332 decks
5%synergy
Brain Freeze
6.9%inclusion23 decks332 decks
6%synergy
Faithful Mending
6.9%inclusion23 decks332 decks
3%synergy
Inkshield
6.9%inclusion23 decks332 decks
-3%synergy
Strix Serenade
6.6%inclusion22 decks332 decks
3%synergy
Thought Scour
6.3%inclusion21 decks332 decks
5%synergy
Teferi's Protection
6.0%inclusion20 decks332 decks
-10%synergy
Retraction Helix
6.0%inclusion20 decks332 decks
5%synergy
Generous Gift
5.7%inclusion19 decks332 decks
-8%synergy
Ad Nauseam
5.4%inclusion18 decks332 decks
3%synergy
Deadly Rollick
5.1%inclusion17 decks332 decks
-11%synergy
Drown in the Loch
5.1%inclusion17 decks332 decks
3%synergy
Sorceries
Windfall
27%inclusion91 decks332 decks
14%synergy
Reanimate
27%inclusion90 decks332 decks
11%synergy
Redress Fate
24%inclusion80 decks332 decks
19%synergy
Singularity Rupture
20%inclusion30 decks149 decks
18%synergy
Toxic Deluge
18%inclusion60 decks332 decks
-2%synergy
Imperial Seal
17%inclusion57 decks332 decks
10%synergy
Dance of the Manse
15%inclusion50 decks332 decks
12%synergy
Glimpse the Unthinkable
15%inclusion49 decks332 decks
14%synergy
Space-Time Anomaly
14%inclusion21 decks146 decks
13%synergy
Extinguish All Hope
12%inclusion41 decks332 decks
11%synergy
Damn
11%inclusion38 decks332 decks
-9%synergy
Lively Dirge
11%inclusion35 decks332 decks
9%synergy
Demonic Counsel
10%inclusion34 decks332 decks
9%synergy
Resurgent Belief
10%inclusion32 decks332 decks
8%synergy
Traumatize
7.8%inclusion26 decks332 decks
7%synergy
Breach the Multiverse
7.8%inclusion26 decks332 decks
6%synergy
Buried Alive
7.2%inclusion24 decks332 decks
3%synergy
Beseech the Mirror
7.2%inclusion24 decks332 decks
3%synergy
Supreme Verdict
6.9%inclusion23 decks332 decks
-8%synergy
Unmarked Grave
6.9%inclusion23 decks332 decks
6%synergy
Replenish
6.9%inclusion23 decks332 decks
5%synergy
Idyllic Tutor
6.9%inclusion23 decks332 decks
3%synergy
Maddening Cacophony
6.3%inclusion21 decks332 decks
5%synergy
Wrath of God
6.0%inclusion20 decks332 decks
2%synergy
Time Wipe
6.0%inclusion20 decks332 decks
-0%synergy
Farewell
5.7%inclusion19 decks332 decks
-6%synergy
Ponder
5.4%inclusion18 decks332 decks
-4%synergy
Cut Your Losses
5.4%inclusion18 decks332 decks
5%synergy
Utility Artifacts
Mesmeric Orb
28%inclusion93 decks332 decks
27%synergy
The One Ring
17%inclusion55 decks332 decks
4%synergy
Wishclaw Talisman
15%inclusion49 decks332 decks
7%synergy
Lightning Greaves
9.3%inclusion31 decks332 decks
-13%synergy
Wayfarer's Bauble
6.6%inclusion22 decks332 decks
-1%synergy
Cloud Key
6.6%inclusion22 decks332 decks
3%synergy
Mindcrank
6.6%inclusion22 decks332 decks
4%synergy
Altar of Dementia
6.0%inclusion20 decks332 decks
5%synergy
Perpetual Timepiece
5.4%inclusion18 decks332 decks
5%synergy
Altar of the Brood
5.1%inclusion17 decks332 decks
4%synergy
Enchantments
Amphibian Downpour
37%inclusion122 decks332 decks
32%synergy
Blind Obedience
36%inclusion121 decks332 decks
25%synergy
Propaganda
36%inclusion119 decks332 decks
7%synergy
Cemetery Tampering
35%inclusion117 decks332 decks
34%synergy
Sphere of Safety
32%inclusion107 decks332 decks
23%synergy
Seal of Cleansing
31%inclusion103 decks332 decks
30%synergy
Grasp of Fate
31%inclusion102 decks332 decks
25%synergy
Secret Arcade // Dusty Parlor
31%inclusion102 decks332 decks
26%synergy
Ghostly Prison
30%inclusion99 decks332 decks
7%synergy
Starfield of Nyx
25%inclusion83 decks332 decks
21%synergy
Estrid's Invocation
25%inclusion82 decks332 decks
20%synergy
Sigil of the Empty Throne
23%inclusion78 decks332 decks
18%synergy
Out of the Tombs
22%inclusion74 decks332 decks
22%synergy
The Meathook Massacre
22%inclusion73 decks332 decks
19%synergy
Cacophony Unleashed
22%inclusion72 decks332 decks
20%synergy
Touch the Spirit Realm
22%inclusion72 decks332 decks
19%synergy
Court of Cunning
21%inclusion71 decks332 decks
20%synergy
Stillness in Motion
21%inclusion41 decks192 decks
21%synergy
Polluted Cistern // Dim Oubliette
20%inclusion67 decks331 decks
20%synergy
Defiled Crypt // Cadaver Lab
20%inclusion66 decks330 decks
19%synergy
Monologue Tax
20%inclusion65 decks332 decks
13%synergy
Necropotence
19%inclusion64 decks332 decks
13%synergy
The Tale of Tamiyo
19%inclusion64 decks332 decks
19%synergy
Seal of Removal
19%inclusion63 decks332 decks
18%synergy
Static Prison
19%inclusion63 decks332 decks
19%synergy
Tinybones Joins Up
18%inclusion59 decks332 decks
17%synergy
Greater Auramancy
17%inclusion58 decks332 decks
13%synergy
Darksteel Mutation
17%inclusion56 decks332 decks
11%synergy
Black Market Connections
16%inclusion54 decks332 decks
1%synergy
Copy Enchantment
16%inclusion53 decks332 decks
11%synergy
Hallowed Haunting
15%inclusion50 decks332 decks
13%synergy
All That Glitters
15%inclusion49 decks332 decks
6%synergy
Shark Typhoon
14%inclusion47 decks332 decks
8%synergy
Secrets of the Dead
14%inclusion47 decks332 decks
14%synergy
Sheltered by Ghosts
14%inclusion46 decks332 decks
11%synergy
Ethereal Armor
14%inclusion46 decks332 decks
9%synergy
Phyrexian Arena
14%inclusion45 decks332 decks
-0%synergy
Founding the Third Path
12%inclusion39 decks332 decks
12%synergy
Imprisoned in the Moon
12%inclusion39 decks332 decks
5%synergy
Leyline of Anticipation
12%inclusion39 decks332 decks
7%synergy
Extravagant Replication
11%inclusion37 decks332 decks
6%synergy
Nowhere to Run
11%inclusion37 decks332 decks
10%synergy
Timely Ward
11%inclusion36 decks332 decks
6%synergy
Chthonian Nightmare
11%inclusion36 decks332 decks
10%synergy
Restricted Office // Lecture Hall
11%inclusion36 decks332 decks
9%synergy
Teval's Judgment
10%inclusion20 decks194 decks
10%synergy
Authority of the Consuls
10%inclusion34 decks332 decks
-3%synergy
Changing Loyalty
10%inclusion5 decks50 decks
9%synergy
Land Tax
10%inclusion33 decks332 decks
4%synergy
Central Elevator // Promising Stairs
10%inclusion32 decks332 decks
9%synergy
Battles
Invasion of Theros
6.6%inclusion22 decks332 decks
5%synergy
Planeswalkers
Teferi, Time Raveler
13%inclusion44 decks332 decks
5%synergy
Jace, Wielder of Mysteries
8.7%inclusion29 decks332 decks
7%synergy
Jace, the Perfected Mind
5.1%inclusion17 decks332 decks
5%synergy
Utility Lands
Hall of Heliod's Generosity
46%inclusion153 decks332 decks
33%synergy
Otawara, Soaring City
36%inclusion118 decks332 decks
17%synergy
Bojuka Bog
34%inclusion112 decks332 decks
7%synergy
Takenuma, Abandoned Mire
20%inclusion67 decks332 decks
14%synergy
Cephalid Coliseum
16%inclusion52 decks332 decks
12%synergy
Urza's Saga
15%inclusion49 decks332 decks
3%synergy
Reliquary Tower
14%inclusion48 decks332 decks
-20%synergy
Serra's Sanctum
11%inclusion35 decks332 decks
9%synergy
Urborg, Tomb of Yawgmoth
11%inclusion35 decks332 decks
-2%synergy
Emergence Zone
10%inclusion33 decks332 decks
8%synergy
Nephalia Drownyard
9.3%inclusion31 decks332 decks
9%synergy
Halimar Depths
7.2%inclusion24 decks332 decks
3%synergy
Minamo, School at Water's Edge
5.7%inclusion19 decks332 decks
2%synergy
Rogue's Passage
5.4%inclusion18 decks332 decks
-4%synergy
Ishgard, the Holy See
5.3%inclusion9 decks169 decks
2%synergy
Mana Artifacts
Arcane Signet
90%inclusion300 decks332 decks
3%synergy
Sol Ring
89%inclusion294 decks332 decks
-1%synergy
Talisman of Dominance
56%inclusion187 decks332 decks
6%synergy
Talisman of Progress
51%inclusion168 decks332 decks
6%synergy
Talisman of Hierarchy
47%inclusion156 decks332 decks
2%synergy
Fellwar Stone
42%inclusion139 decks332 decks
9%synergy
Azorius Signet
27%inclusion89 decks332 decks
-3%synergy
Orzhov Signet
24%inclusion80 decks332 decks
-7%synergy
Lotus Petal
23%inclusion75 decks332 decks
12%synergy
Dimir Signet
21%inclusion71 decks332 decks
-9%synergy
Chrome Mox
21%inclusion71 decks332 decks
12%synergy
Mox Diamond
18%inclusion60 decks332 decks
11%synergy
Mox Opal
17%inclusion58 decks332 decks
9%synergy
Lion's Eye Diamond
15%inclusion51 decks332 decks
13%synergy
Mox Amber
10%inclusion34 decks332 decks
4%synergy
Mind Stone
9.0%inclusion30 decks332 decks
-3%synergy
Grim Monolith
7.8%inclusion26 decks332 decks
5%synergy
Commander's Sphere
7.2%inclusion24 decks332 decks
-10%synergy
Thought Vessel
6.6%inclusion22 decks332 decks
-18%synergy
Chromatic Lantern
5.1%inclusion17 decks332 decks
-7%synergy
Lands
Command Tower
97%inclusion322 decks332 decks
4%synergy
Island
85%inclusion283 decks332 decks
-8%synergy
Swamp
84%inclusion278 decks332 decks
-8%synergy
Plains
82%inclusion272 decks332 decks
-10%synergy
Watery Grave
61%inclusion204 decks332 decks
10%synergy
Hallowed Fountain
61%inclusion203 decks332 decks
10%synergy
Exotic Orchard
60%inclusion199 decks332 decks
1%synergy
Godless Shrine
59%inclusion196 decks332 decks
7%synergy
Polluted Delta
55%inclusion183 decks332 decks
17%synergy
Flooded Strand
55%inclusion183 decks332 decks
17%synergy
Marsh Flats
50%inclusion165 decks332 decks
14%synergy
Arcane Sanctum
46%inclusion154 decks332 decks
-8%synergy
Adarkar Wastes
44%inclusion146 decks332 decks
11%synergy
Caves of Koilos
42%inclusion138 decks332 decks
6%synergy
Undercity Sewers
41%inclusion137 decks332 decks
26%synergy
Raffine's Tower
41%inclusion135 decks332 decks
-0%synergy
Morphic Pool
41%inclusion135 decks332 decks
7%synergy
Sea of Clouds
40%inclusion132 decks332 decks
5%synergy
Underground River
40%inclusion132 decks332 decks
5%synergy
Vault of Champions
39%inclusion130 decks332 decks
7%synergy
Meticulous Archive
35%inclusion116 decks332 decks
21%synergy
Shadowy Backstreet
34%inclusion112 decks332 decks
21%synergy
Isolated Chapel
33%inclusion109 decks332 decks
-9%synergy
Valgavoth's Lair
30%inclusion99 decks332 decks
27%synergy
Glacial Fortress
30%inclusion98 decks332 decks
-14%synergy
Drowned Catacomb
28%inclusion93 decks332 decks
-10%synergy
City of Brass
28%inclusion92 decks332 decks
12%synergy
Mana Confluence
26%inclusion87 decks332 decks
12%synergy
Tundra
25%inclusion84 decks332 decks
9%synergy
Scrubland
25%inclusion84 decks332 decks
9%synergy
Underground Sea
25%inclusion83 decks332 decks
9%synergy
Bloodstained Mire
24%inclusion79 decks332 decks
13%synergy
Evolving Wilds
23%inclusion75 decks332 decks
-2%synergy
Scalding Tarn
23%inclusion75 decks332 decks
12%synergy
Misty Rainforest
22%inclusion73 decks332 decks
11%synergy
Verdant Catacombs
22%inclusion73 decks332 decks
12%synergy
Prairie Stream
21%inclusion70 decks332 decks
-20%synergy
Windswept Heath
21%inclusion69 decks332 decks
11%synergy
Gemstone Caverns
21%inclusion69 decks332 decks
13%synergy
Deserted Beach
20%inclusion68 decks332 decks
-0%synergy
Shipwreck Marsh
20%inclusion67 decks332 decks
-0%synergy
Sunken Hollow
20%inclusion66 decks332 decks
-20%synergy
Terramorphic Expanse
20%inclusion65 decks332 decks
4%synergy
Temple of Silence
20%inclusion65 decks332 decks
1%synergy
Temple of Deceit
19%inclusion64 decks332 decks
2%synergy
Gloomlake Verge
19%inclusion64 decks332 decks
8%synergy
Floodfarm Verge
19%inclusion63 decks332 decks
8%synergy
Temple of Enlightenment
19%inclusion63 decks332 decks
3%synergy
Arid Mesa
19%inclusion63 decks332 decks
10%synergy
Contaminated Landscape
19%inclusion62 decks332 decks
5%synergy
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