The Master of Keys (Commander) - Good Stuff

The Master of Keys
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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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Enchantments
Battles
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Utility Lands
Mana Artifacts
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Animate Dead
86%inclusion19 decks22 decks
77%synergy
Necromancy
77%inclusion17 decks22 decks
73%synergy
Ripples of Undeath
68%inclusion15 decks22 decks
65%synergy
Mystic Remora
86%inclusion19 decks22 decks
65%synergy
Dance of the Dead
59%inclusion13 decks22 decks
57%synergy
Entomb
64%inclusion14 decks22 decks
57%synergy
Abdel Adrian, Gorion's Ward
55%inclusion12 decks22 decks
53%synergy
Dress Down
55%inclusion12 decks22 decks
52%synergy
The Meathook Massacre
55%inclusion12 decks22 decks
51%synergy
Inquisitive Glimmer
55%inclusion12 decks22 decks
47%synergy
Top Cards
Blind Obedience
59%inclusion13 decks22 decks
47%synergy
Esper Sentinel
55%inclusion12 decks22 decks
27%synergy
Sevinne's Reclamation
50%inclusion11 decks22 decks
41%synergy
Dark Ritual
50%inclusion11 decks22 decks
31%synergy
Swords to Plowshares
50%inclusion11 decks22 decks
-18%synergy
Entity Tracker
50%inclusion11 decks22 decks
44%synergy
Tinybones Joins Up
45%inclusion10 decks22 decks
44%synergy
Swan Song
45%inclusion10 decks22 decks
26%synergy
Amphibian Downpour
45%inclusion10 decks22 decks
41%synergy
Zur, Eternal Schemer
45%inclusion10 decks22 decks
42%synergy
Game Changers
Smothering Tithe
73%inclusion16 decks22 decks
41%synergy
Rhystic Study
73%inclusion16 decks22 decks
40%synergy
Enlightened Tutor
55%inclusion12 decks22 decks
35%synergy
Demonic Tutor
45%inclusion10 decks22 decks
24%synergy
Force of Will
45%inclusion10 decks22 decks
33%synergy
Cyclonic Rift
45%inclusion10 decks22 decks
21%synergy
Orcish Bowmasters
45%inclusion10 decks22 decks
34%synergy
Ancient Tomb
41%inclusion9 decks22 decks
28%synergy
Vampiric Tutor
41%inclusion9 decks22 decks
23%synergy
Thassa's Oracle
36%inclusion8 decks22 decks
27%synergy
Creatures
Lotho, Corrupt Shirriff
41%inclusion9 decks22 decks
24%synergy
Demon of Fate's Design
41%inclusion9 decks22 decks
35%synergy
Mesa Enchantress
41%inclusion9 decks22 decks
32%synergy
Starfield Mystic
36%inclusion8 decks22 decks
30%synergy
Overlord of the Floodpits
36%inclusion8 decks22 decks
33%synergy
Overlord of the Balemurk
36%inclusion8 decks22 decks
34%synergy
Grand Abolisher
36%inclusion8 decks22 decks
22%synergy
Ranger-Captain of Eos
36%inclusion8 decks22 decks
30%synergy
Gravebreaker Lamia
32%inclusion7 decks22 decks
31%synergy
Valley Floodcaller
32%inclusion7 decks22 decks
28%synergy
Fear of Impostors
32%inclusion7 decks22 decks
30%synergy
Victor, Valgavoth's Seneschal
32%inclusion7 decks22 decks
30%synergy
Voice of Victory
30%inclusion3 decks10 decks
22%synergy
Scrabbling Skullcrab
27%inclusion6 decks22 decks
26%synergy
Ledger Shredder
27%inclusion6 decks22 decks
18%synergy
Archivist of Oghma
23%inclusion5 decks22 decks
16%synergy
Opposition Agent
23%inclusion5 decks22 decks
14%synergy
Silent Hallcreeper
23%inclusion5 decks22 decks
18%synergy
Overlord of the Mistmoors
23%inclusion5 decks22 decks
21%synergy
Talion, the Kindly Lord
23%inclusion5 decks22 decks
15%synergy
Fear of Sleep Paralysis
23%inclusion5 decks22 decks
17%synergy
Mockingbird
23%inclusion5 decks22 decks
18%synergy
Ondu Spiritdancer
23%inclusion5 decks22 decks
16%synergy
Hullbreaker Horror
23%inclusion5 decks22 decks
17%synergy
Tataru Taru
20%inclusion2 decks10 decks
12%synergy
Hedron Crab
18%inclusion4 decks22 decks
18%synergy
Moon-Blessed Cleric
18%inclusion4 decks22 decks
13%synergy
Enduring Curiosity
18%inclusion4 decks22 decks
10%synergy
Grim Guardian
18%inclusion4 decks22 decks
16%synergy
Heliod, the Radiant Dawn
18%inclusion4 decks22 decks
14%synergy
Ghostly Dancers
18%inclusion4 decks22 decks
15%synergy
Psychic Frog
18%inclusion4 decks22 decks
11%synergy
Astelli Reclaimer
17%inclusion1 decks6 decks
16%synergy
Hoarding Broodlord
14%inclusion3 decks22 decks
12%synergy
Consecrated Sphinx
14%inclusion3 decks22 decks
7%synergy
Lurrus of the Dream-Den
14%inclusion3 decks22 decks
12%synergy
Archon of Sun's Grace
14%inclusion3 decks22 decks
9%synergy
Soaring Lightbringer
14%inclusion3 decks22 decks
9%synergy
Balemurk Leech
14%inclusion3 decks22 decks
13%synergy
Drannith Magistrate
14%inclusion3 decks22 decks
5%synergy
Nashi, Searcher in the Dark
14%inclusion3 decks22 decks
13%synergy
Doomwake Giant
14%inclusion3 decks22 decks
8%synergy
Aminatou, Veil Piercer
14%inclusion3 decks22 decks
12%synergy
Valgavoth, Terror Eater
14%inclusion3 decks22 decks
10%synergy
Auriok Salvagers
14%inclusion3 decks22 decks
13%synergy
Stenn, Paranoid Partisan
9.1%inclusion2 decks22 decks
8%synergy
Displacer Kitten
9.1%inclusion2 decks22 decks
2%synergy
Phyrexian Metamorph
9.1%inclusion2 decks22 decks
0%synergy
Lord of the Forsaken
9.1%inclusion2 decks22 decks
9%synergy
Scholar of New Horizons
9.1%inclusion2 decks22 decks
8%synergy
Instants
Silence
41%inclusion9 decks22 decks
31%synergy
An Offer You Can't Refuse
36%inclusion8 decks22 decks
10%synergy
Flusterstorm
36%inclusion8 decks22 decks
28%synergy
Mystical Tutor
36%inclusion8 decks22 decks
25%synergy
Tainted Pact
32%inclusion7 decks22 decks
24%synergy
Mindbreak Trap
32%inclusion7 decks22 decks
25%synergy
Demonic Consultation
32%inclusion7 decks22 decks
23%synergy
Force of Negation
32%inclusion7 decks22 decks
20%synergy
Borne Upon a Wind
32%inclusion7 decks22 decks
27%synergy
Fierce Guardianship
32%inclusion7 decks22 decks
11%synergy
Mental Misstep
27%inclusion6 decks22 decks
20%synergy
Deadly Rollick
23%inclusion5 decks22 decks
9%synergy
Chain of Vapor
23%inclusion5 decks22 decks
19%synergy
Cabal Ritual
23%inclusion5 decks22 decks
19%synergy
Mana Drain
23%inclusion5 decks22 decks
5%synergy
Into the Flood Maw
23%inclusion5 decks22 decks
19%synergy
Dovin's Veto
18%inclusion4 decks22 decks
-7%synergy
Retraction Helix
18%inclusion4 decks22 decks
17%synergy
Intuition
18%inclusion4 decks22 decks
16%synergy
Arcane Denial
18%inclusion4 decks22 decks
-2%synergy
Counterspell
18%inclusion4 decks22 decks
-23%synergy
Pact of Negation
18%inclusion4 decks22 decks
10%synergy
Sacrifice
14%inclusion3 decks22 decks
13%synergy
Drown in the Loch
14%inclusion3 decks22 decks
12%synergy
Lim-Dûl's Vault
14%inclusion3 decks22 decks
10%synergy
Gifts Ungiven
14%inclusion3 decks22 decks
11%synergy
Culling the Weak
14%inclusion3 decks22 decks
12%synergy
Void Rend
14%inclusion3 decks22 decks
-20%synergy
Sink into Stupor
14%inclusion3 decks22 decks
1%synergy
Saw in Half
14%inclusion3 decks22 decks
12%synergy
Teferi's Protection
9.1%inclusion2 decks22 decks
-8%synergy
Tithe
9.1%inclusion2 decks22 decks
9%synergy
Negate
9.1%inclusion2 decks22 decks
-7%synergy
Brainstorm
9.1%inclusion2 decks22 decks
-8%synergy
Dawn's Truce
9.1%inclusion2 decks22 decks
5%synergy
Brain Freeze
9.1%inclusion2 decks22 decks
9%synergy
Angel's Grace
9.1%inclusion2 decks22 decks
6%synergy
Banishing Knack
9.1%inclusion2 decks22 decks
9%synergy
Strix Serenade
9.1%inclusion2 decks22 decks
5%synergy
Ad Nauseam
9.1%inclusion2 decks22 decks
7%synergy
Despark
9.1%inclusion2 decks22 decks
-7%synergy
Visions of Beyond
9.1%inclusion2 decks22 decks
9%synergy
Path to Exile
9.1%inclusion2 decks22 decks
-33%synergy
Inkshield
9.1%inclusion2 decks22 decks
0%synergy
Sorceries
Windfall
32%inclusion7 decks22 decks
18%synergy
Reanimate
32%inclusion7 decks22 decks
16%synergy
Imperial Seal
27%inclusion6 decks22 decks
20%synergy
Toxic Deluge
23%inclusion5 decks22 decks
3%synergy
Beseech the Mirror
23%inclusion5 decks22 decks
19%synergy
Unmarked Grave
18%inclusion4 decks22 decks
17%synergy
Demonic Counsel
18%inclusion4 decks22 decks
17%synergy
Diabolic Intent
14%inclusion3 decks22 decks
9%synergy
Lively Dirge
14%inclusion3 decks22 decks
12%synergy
Yawgmoth's Will
14%inclusion3 decks22 decks
12%synergy
Replenish
14%inclusion3 decks22 decks
12%synergy
Mnemonic Betrayal
14%inclusion3 decks22 decks
11%synergy
Redress Fate
14%inclusion3 decks22 decks
7%synergy
Incarnation Technique
9.1%inclusion2 decks22 decks
8%synergy
Glimpse the Unthinkable
9.1%inclusion2 decks22 decks
9%synergy
Damn
9.1%inclusion2 decks22 decks
-11%synergy
Traumatize
9.1%inclusion2 decks22 decks
9%synergy
Nuclear Fallout
9.1%inclusion2 decks22 decks
9%synergy
Dance of the Manse
9.1%inclusion2 decks22 decks
5%synergy
Utility Artifacts
The One Ring
36%inclusion8 decks22 decks
23%synergy
Wishclaw Talisman
32%inclusion7 decks22 decks
24%synergy
Sensei's Divining Top
23%inclusion5 decks22 decks
13%synergy
Mesmeric Orb
18%inclusion4 decks22 decks
17%synergy
Lightning Greaves
14%inclusion3 decks22 decks
-9%synergy
Isochron Scepter
14%inclusion3 decks22 decks
11%synergy
Whip of Erebos
9.1%inclusion2 decks22 decks
7%synergy
Agatha's Soul Cauldron
9.1%inclusion2 decks22 decks
9%synergy
Enchantments
Stillness in Motion
40%inclusion4 decks10 decks
40%synergy
Seal of Cleansing
36%inclusion8 decks22 decks
35%synergy
Parker Luck
33%inclusion1 decks3 decks
33%synergy
Cacophony Unleashed
32%inclusion7 decks22 decks
30%synergy
Touch the Spirit Realm
32%inclusion7 decks22 decks
29%synergy
Secret Arcade // Dusty Parlor
32%inclusion7 decks22 decks
27%synergy
Teval's Judgment
30%inclusion3 decks10 decks
29%synergy
Starfield of Nyx
27%inclusion6 decks22 decks
23%synergy
Necropotence
27%inclusion6 decks22 decks
20%synergy
Cemetery Tampering
27%inclusion6 decks22 decks
27%synergy
Sheltered by Ghosts
27%inclusion6 decks22 decks
25%synergy
Propaganda
27%inclusion6 decks22 decks
1%synergy
Grasp of Fate
23%inclusion5 decks22 decks
17%synergy
Sigil of the Empty Throne
23%inclusion5 decks22 decks
17%synergy
Estrid's Invocation
23%inclusion5 decks22 decks
18%synergy
Sphere of Safety
23%inclusion5 decks22 decks
13%synergy
Static Prison
23%inclusion5 decks22 decks
22%synergy
Polluted Cistern // Dim Oubliette
23%inclusion5 decks22 decks
22%synergy
Black Market Connections
23%inclusion5 decks22 decks
9%synergy
Ghostly Prison
23%inclusion5 decks22 decks
1%synergy
Steal Enchantment
18%inclusion4 decks22 decks
17%synergy
Meathook Massacre II
18%inclusion4 decks22 decks
18%synergy
Monologue Tax
18%inclusion4 decks22 decks
12%synergy
Court of Vantress
18%inclusion4 decks22 decks
16%synergy
Secrets of the Dead
18%inclusion4 decks22 decks
18%synergy
Hallowed Haunting
18%inclusion4 decks22 decks
16%synergy
Greater Auramancy
18%inclusion4 decks22 decks
14%synergy
Defiled Crypt // Cadaver Lab
18%inclusion4 decks22 decks
17%synergy
Counterbalance
14%inclusion3 decks22 decks
12%synergy
Parallax Wave
14%inclusion3 decks22 decks
13%synergy
Out of the Tombs
14%inclusion3 decks22 decks
13%synergy
Mirrormade
14%inclusion3 decks22 decks
4%synergy
Copy Artifact
14%inclusion3 decks22 decks
13%synergy
The Tale of Tamiyo
14%inclusion3 decks22 decks
13%synergy
Court of Ardenvale
14%inclusion3 decks22 decks
13%synergy
Redemption Arc
14%inclusion3 decks22 decks
13%synergy
Oubliette
14%inclusion3 decks22 decks
12%synergy
Ethereal Armor
14%inclusion3 decks22 decks
9%synergy
Mirror Room // Fractured Realm
14%inclusion3 decks22 decks
11%synergy
Trouble in Pairs
14%inclusion3 decks22 decks
8%synergy
Waste Not
9.1%inclusion2 decks22 decks
9%synergy
Darksteel Mutation
9.1%inclusion2 decks22 decks
3%synergy
Founding the Third Path
9.1%inclusion2 decks22 decks
9%synergy
Fortune Teller's Talent
9.1%inclusion2 decks22 decks
9%synergy
Court of Cunning
9.1%inclusion2 decks22 decks
8%synergy
Gift of Doom
9.1%inclusion2 decks22 decks
8%synergy
Lost in the Maze
9.1%inclusion2 decks22 decks
9%synergy
Extravagant Replication
9.1%inclusion2 decks22 decks
4%synergy
Utter Insignificance
9.1%inclusion2 decks22 decks
9%synergy
The Eldest Reborn
9.1%inclusion2 decks22 decks
7%synergy
Battles
Invasion of Theros
18%inclusion4 decks22 decks
16%synergy
Planeswalkers
Teferi, Time Raveler
18%inclusion4 decks22 decks
10%synergy
Utility Lands
Hall of Heliod's Generosity
45%inclusion10 decks22 decks
32%synergy
Urza's Saga
41%inclusion9 decks22 decks
29%synergy
Otawara, Soaring City
41%inclusion9 decks22 decks
22%synergy
Emergence Zone
27%inclusion6 decks22 decks
25%synergy
Bojuka Bog
23%inclusion5 decks22 decks
-5%synergy
Mistrise Village
20%inclusion2 decks10 decks
16%synergy
Adagia, Windswept Bastion
17%inclusion1 decks6 decks
14%synergy
Takenuma, Abandoned Mire
14%inclusion3 decks22 decks
7%synergy
Cephalid Coliseum
14%inclusion3 decks22 decks
10%synergy
City of Traitors
14%inclusion3 decks22 decks
12%synergy
Mystic Sanctuary
9.1%inclusion2 decks22 decks
5%synergy
Phyrexian Tower
9.1%inclusion2 decks22 decks
5%synergy
Rivendell
9.1%inclusion2 decks22 decks
7%synergy
Serra's Sanctum
9.1%inclusion2 decks22 decks
7%synergy
Command Beacon
9.1%inclusion2 decks22 decks
6%synergy
Urborg, Tomb of Yawgmoth
9.1%inclusion2 decks22 decks
-4%synergy
Mana Artifacts
Sol Ring
91%inclusion20 decks22 decks
1%synergy
Arcane Signet
82%inclusion18 decks22 decks
-6%synergy
Talisman of Dominance
64%inclusion14 decks22 decks
14%synergy
Talisman of Progress
50%inclusion11 decks22 decks
7%synergy
Talisman of Hierarchy
45%inclusion10 decks22 decks
2%synergy
Lotus Petal
36%inclusion8 decks22 decks
26%synergy
Mana Vault
36%inclusion8 decks22 decks
27%synergy
Fellwar Stone
36%inclusion8 decks22 decks
2%synergy
Chrome Mox
36%inclusion8 decks22 decks
27%synergy
Mox Diamond
32%inclusion7 decks22 decks
25%synergy
Dimir Signet
27%inclusion6 decks22 decks
-5%synergy
Mox Opal
27%inclusion6 decks22 decks
18%synergy
Azorius Signet
27%inclusion6 decks22 decks
-5%synergy
Orzhov Signet
23%inclusion5 decks22 decks
-12%synergy
Lion's Eye Diamond
23%inclusion5 decks22 decks
21%synergy
Mox Amber
14%inclusion3 decks22 decks
8%synergy
Grim Monolith
9.1%inclusion2 decks22 decks
6%synergy
Lands
Command Tower
100%inclusion22 decks22 decks
8%synergy
Watery Grave
91%inclusion20 decks22 decks
41%synergy
Hallowed Fountain
86%inclusion19 decks22 decks
37%synergy
Godless Shrine
82%inclusion18 decks22 decks
32%synergy
Polluted Delta
82%inclusion18 decks22 decks
45%synergy
Flooded Strand
82%inclusion18 decks22 decks
44%synergy
Swamp
77%inclusion17 decks22 decks
-14%synergy
Island
77%inclusion17 decks22 decks
-15%synergy
Marsh Flats
77%inclusion17 decks22 decks
41%synergy
Plains
73%inclusion16 decks22 decks
-19%synergy
Exotic Orchard
64%inclusion14 decks22 decks
5%synergy
Morphic Pool
55%inclusion12 decks22 decks
20%synergy
Undercity Sewers
50%inclusion11 decks22 decks
36%synergy
Sea of Clouds
50%inclusion11 decks22 decks
14%synergy
City of Brass
50%inclusion11 decks22 decks
35%synergy
Raffine's Tower
45%inclusion10 decks22 decks
4%synergy
Vault of Champions
45%inclusion10 decks22 decks
13%synergy
Gemstone Caverns
41%inclusion9 decks22 decks
33%synergy
Mana Confluence
41%inclusion9 decks22 decks
27%synergy
Shadowy Backstreet
36%inclusion8 decks22 decks
24%synergy
Isolated Chapel
36%inclusion8 decks22 decks
-2%synergy
Meticulous Archive
36%inclusion8 decks22 decks
23%synergy
Gloomlake Verge
36%inclusion8 decks22 decks
25%synergy
Floodfarm Verge
36%inclusion8 decks22 decks
25%synergy
Bloodstained Mire
36%inclusion8 decks22 decks
25%synergy
Tundra
32%inclusion7 decks22 decks
16%synergy
Misty Rainforest
32%inclusion7 decks22 decks
21%synergy
Underground Sea
32%inclusion7 decks22 decks
16%synergy
Underground River
32%inclusion7 decks22 decks
-1%synergy
Scrubland
32%inclusion7 decks22 decks
16%synergy
Scalding Tarn
32%inclusion7 decks22 decks
21%synergy
Adarkar Wastes
32%inclusion7 decks22 decks
1%synergy
Caves of Koilos
27%inclusion6 decks22 decks
-8%synergy
Arid Mesa
27%inclusion6 decks22 decks
17%synergy
Glacial Fortress
23%inclusion5 decks22 decks
-17%synergy
Valgavoth's Lair
23%inclusion5 decks22 decks
20%synergy
Arcane Sanctum
23%inclusion5 decks22 decks
-32%synergy
Contaminated Landscape
18%inclusion4 decks22 decks
4%synergy
Windswept Heath
18%inclusion4 decks22 decks
8%synergy
Shipwreck Marsh
18%inclusion4 decks22 decks
-2%synergy
Verdant Catacombs
18%inclusion4 decks22 decks
8%synergy
Drowned Catacomb
18%inclusion4 decks22 decks
-17%synergy
Prairie Stream
14%inclusion3 decks22 decks
-27%synergy
Sink into Stupor
14%inclusion3 decks22 decks
1%synergy
Sunken Hollow
14%inclusion3 decks22 decks
-26%synergy
Obscura Storefront
14%inclusion3 decks22 decks
3%synergy
Bleachbone Verge
13%inclusion2 decks15 decks
5%synergy
Starting Town
10%inclusion1 decks10 decks
6%synergy
Fabled Passage
9.1%inclusion2 decks22 decks
2%synergy
Clearwater Pathway
9.1%inclusion2 decks22 decks
2%synergy
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