The Master of Keys (Commander) - Expensive Upgraded Enchantress

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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Ripples of Undeath
89%inclusion8 decks9 decks
86%synergy
Hall of Heliod's Generosity
89%inclusion8 decks9 decks
76%synergy
Sevinne's Reclamation
78%inclusion7 decks9 decks
69%synergy
Dance of the Dead
67%inclusion6 decks9 decks
64%synergy
Ghostly Dancers
67%inclusion6 decks9 decks
64%synergy
The Meathook Massacre
67%inclusion6 decks9 decks
63%synergy
Overlord of the Floodpits
67%inclusion6 decks9 decks
63%synergy
Entity Tracker
67%inclusion6 decks9 decks
60%synergy
Animate Dead
67%inclusion6 decks9 decks
57%synergy
Mirrormade
67%inclusion6 decks9 decks
57%synergy
Top Cards
Scrabbling Skullcrab
56%inclusion5 decks9 decks
54%synergy
An Offer You Can't Refuse
56%inclusion5 decks9 decks
29%synergy
Inquisitive Glimmer
56%inclusion5 decks9 decks
48%synergy
Demon of Fate's Design
56%inclusion5 decks9 decks
50%synergy
Necromancy
56%inclusion5 decks9 decks
51%synergy
Thirst for Meaning
56%inclusion5 decks9 decks
54%synergy
Mystic Remora
56%inclusion5 decks9 decks
34%synergy
Swan Song
56%inclusion5 decks9 decks
36%synergy
Victor, Valgavoth's Seneschal
56%inclusion5 decks9 decks
53%synergy
Amphibian Downpour
56%inclusion5 decks9 decks
51%synergy
Game Changers
Smothering Tithe
89%inclusion8 decks9 decks
56%synergy
Rhystic Study
56%inclusion5 decks9 decks
23%synergy
Serra's Sanctum
33%inclusion3 decks9 decks
32%synergy
Intuition
22%inclusion2 decks9 decks
20%synergy
Gifts Ungiven
22%inclusion2 decks9 decks
20%synergy
Teferi's Protection
11%inclusion1 decks9 decks
-6%synergy
Imperial Seal
11%inclusion1 decks9 decks
3%synergy
Thassa's Oracle
11%inclusion1 decks9 decks
1%synergy
Ancient Tomb
11%inclusion1 decks9 decks
-2%synergy
Consecrated Sphinx
11%inclusion1 decks9 decks
5%synergy
Creatures
Grim Guardian
56%inclusion5 decks9 decks
53%synergy
Gravebreaker Lamia
44%inclusion4 decks9 decks
43%synergy
Fear of Impostors
44%inclusion4 decks9 decks
43%synergy
Overlord of the Balemurk
44%inclusion4 decks9 decks
42%synergy
Silent Hallcreeper
44%inclusion4 decks9 decks
40%synergy
Fear of Sleep Paralysis
44%inclusion4 decks9 decks
39%synergy
Doomwake Giant
44%inclusion4 decks9 decks
38%synergy
Starfield Mystic
33%inclusion3 decks9 decks
27%synergy
Archon of Sun's Grace
33%inclusion3 decks9 decks
29%synergy
Zur, Eternal Schemer
33%inclusion3 decks9 decks
30%synergy
Fear of Surveillance
22%inclusion2 decks9 decks
22%synergy
Sage of Mysteries
22%inclusion2 decks9 decks
22%synergy
Leonin Relic-Warder
22%inclusion2 decks9 decks
22%synergy
Mesa Enchantress
22%inclusion2 decks9 decks
13%synergy
Enduring Curiosity
22%inclusion2 decks9 decks
15%synergy
Sun Titan
22%inclusion2 decks9 decks
13%synergy
Ancient Cellarspawn
22%inclusion2 decks9 decks
19%synergy
Heliod, the Radiant Dawn
22%inclusion2 decks9 decks
18%synergy
Toxrill, the Corrosive
22%inclusion2 decks9 decks
19%synergy
Abdel Adrian, Gorion's Ward
22%inclusion2 decks9 decks
20%synergy
Ondu Spiritdancer
22%inclusion2 decks9 decks
16%synergy
Hullbreaker Horror
22%inclusion2 decks9 decks
16%synergy
Summon: Yojimbo
17%inclusion1 decks6 decks
16%synergy
Astelli Reclaimer
17%inclusion1 decks6 decks
16%synergy
Fear of Falling
11%inclusion1 decks9 decks
11%synergy
Fear of Infinity
11%inclusion1 decks9 decks
10%synergy
Lotho, Corrupt Shirriff
11%inclusion1 decks9 decks
-6%synergy
Erratic Apparition
11%inclusion1 decks9 decks
11%synergy
The Mindskinner
11%inclusion1 decks9 decks
10%synergy
Osseous Sticktwister
11%inclusion1 decks9 decks
11%synergy
Hunted Horror
11%inclusion1 decks9 decks
11%synergy
Gray Merchant of Asphodel
11%inclusion1 decks9 decks
6%synergy
Lurrus of the Dream-Den
11%inclusion1 decks9 decks
9%synergy
Scholar of New Horizons
11%inclusion1 decks9 decks
10%synergy
Agent of Erebos
11%inclusion1 decks9 decks
11%synergy
Celestial Ancient
11%inclusion1 decks9 decks
11%synergy
Phyrexian Obliterator
11%inclusion1 decks9 decks
11%synergy
Zellix, Sanity Flayer
11%inclusion1 decks9 decks
11%synergy
Nighthowler
11%inclusion1 decks9 decks
11%synergy
Jace, Vryn's Prodigy
11%inclusion1 decks9 decks
11%synergy
Esper Sentinel
11%inclusion1 decks9 decks
-17%synergy
Boggart Trawler
11%inclusion1 decks9 decks
8%synergy
Dusk Mangler
11%inclusion1 decks9 decks
11%synergy
Vilis, Broker of Blood
11%inclusion1 decks9 decks
10%synergy
Overlord of the Mistmoors
11%inclusion1 decks9 decks
9%synergy
Moon-Blessed Cleric
11%inclusion1 decks9 decks
6%synergy
Daxos the Returned
11%inclusion1 decks9 decks
11%synergy
Mind Flayer
11%inclusion1 decks9 decks
10%synergy
Enduring Tenacity
11%inclusion1 decks9 decks
4%synergy
Skullsnap Nuisance
11%inclusion1 decks9 decks
11%synergy
Instants
Entomb
33%inclusion3 decks9 decks
26%synergy
Mana Drain
33%inclusion3 decks9 decks
16%synergy
Sink into Stupor
33%inclusion3 decks9 decks
21%synergy
Lim-Dûl's Vault
22%inclusion2 decks9 decks
19%synergy
Fact or Fiction
22%inclusion2 decks9 decks
18%synergy
Void Rend
22%inclusion2 decks9 decks
-11%synergy
Arcane Denial
22%inclusion2 decks9 decks
2%synergy
Swords to Plowshares
22%inclusion2 decks9 decks
-46%synergy
Faithful Mending
22%inclusion2 decks9 decks
18%synergy
Counterspell
22%inclusion2 decks9 decks
-19%synergy
Pact of Negation
22%inclusion2 decks9 decks
14%synergy
Withering Torment
22%inclusion2 decks9 decks
20%synergy
Louisoix's Sacrifice
17%inclusion1 decks6 decks
16%synergy
Eerie Interference
11%inclusion1 decks9 decks
11%synergy
Dark Ritual
11%inclusion1 decks9 decks
-8%synergy
Cabal Ritual
11%inclusion1 decks9 decks
8%synergy
Tolarian Winds
11%inclusion1 decks9 decks
9%synergy
Seized from Slumber
11%inclusion1 decks9 decks
11%synergy
Strix Serenade
11%inclusion1 decks9 decks
7%synergy
Perplex
11%inclusion1 decks9 decks
10%synergy
Jwari Disruption
11%inclusion1 decks9 decks
10%synergy
Force of Will
11%inclusion1 decks9 decks
-2%synergy
Enlightened Tutor
11%inclusion1 decks9 decks
-9%synergy
Utter End
11%inclusion1 decks9 decks
4%synergy
Path to Exile
11%inclusion1 decks9 decks
-31%synergy
Memory Deluge
11%inclusion1 decks9 decks
11%synergy
Don't Make a Sound
11%inclusion1 decks9 decks
11%synergy
Sorceries
Toxic Deluge
44%inclusion4 decks9 decks
25%synergy
Demonic Counsel
33%inclusion3 decks9 decks
32%synergy
Reanimate
33%inclusion3 decks9 decks
17%synergy
Redress Fate
33%inclusion3 decks9 decks
27%synergy
Dance of the Manse
33%inclusion3 decks9 decks
30%synergy
Supreme Verdict
22%inclusion2 decks9 decks
7%synergy
Commune with Evil
22%inclusion2 decks9 decks
22%synergy
Farewell
22%inclusion2 decks9 decks
9%synergy
Replenish
22%inclusion2 decks9 decks
20%synergy
Slaughter the Strong
22%inclusion2 decks9 decks
22%synergy
Damn
22%inclusion2 decks9 decks
2%synergy
Compulsive Research
22%inclusion2 decks9 decks
22%synergy
Singularity Rupture
17%inclusion1 decks6 decks
14%synergy
Ponder
11%inclusion1 decks9 decks
2%synergy
Windfall
11%inclusion1 decks9 decks
-3%synergy
Lively Dirge
11%inclusion1 decks9 decks
10%synergy
Tranquilize
11%inclusion1 decks9 decks
11%synergy
Clear the Mind
11%inclusion1 decks9 decks
11%synergy
Wrath of God
11%inclusion1 decks9 decks
7%synergy
Glimpse the Unthinkable
11%inclusion1 decks9 decks
11%synergy
Diabolic Vision
11%inclusion1 decks9 decks
9%synergy
Brilliant Restoration
11%inclusion1 decks9 decks
9%synergy
Extinguish All Hope
11%inclusion1 decks9 decks
9%synergy
Day of Judgment
11%inclusion1 decks9 decks
10%synergy
Portent
11%inclusion1 decks9 decks
8%synergy
Utility Artifacts
Mesmeric Orb
33%inclusion3 decks9 decks
32%synergy
Chimil, the Inner Sun
22%inclusion2 decks9 decks
21%synergy
Cloud Key
22%inclusion2 decks9 decks
19%synergy
Crucible of Worlds
22%inclusion2 decks9 decks
21%synergy
Palantír of Orthanc
22%inclusion2 decks9 decks
21%synergy
Wishclaw Talisman
22%inclusion2 decks9 decks
14%synergy
Lightning Greaves
22%inclusion2 decks9 decks
0%synergy
The One Ring
11%inclusion1 decks9 decks
-3%synergy
Helm of the Gods
11%inclusion1 decks9 decks
10%synergy
Expedition Map
11%inclusion1 decks9 decks
10%synergy
Altar of Dementia
11%inclusion1 decks9 decks
10%synergy
Enchantments
Secret Arcade // Dusty Parlor
56%inclusion5 decks9 decks
50%synergy
Propaganda
56%inclusion5 decks9 decks
29%synergy
Stillness in Motion
50%inclusion4 decks8 decks
50%synergy
Out of the Tombs
44%inclusion4 decks9 decks
44%synergy
Blind Obedience
44%inclusion4 decks9 decks
32%synergy
Estrid's Invocation
44%inclusion4 decks9 decks
40%synergy
Cemetery Tampering
44%inclusion4 decks9 decks
44%synergy
Static Prison
44%inclusion4 decks9 decks
44%synergy
Ghostly Prison
44%inclusion4 decks9 decks
23%synergy
Trouble in Pairs
44%inclusion4 decks9 decks
39%synergy
Grasp of Fate
33%inclusion3 decks9 decks
27%synergy
Cacophony Unleashed
33%inclusion3 decks9 decks
32%synergy
Sigil of the Empty Throne
33%inclusion3 decks9 decks
27%synergy
Unable to Scream
33%inclusion3 decks9 decks
32%synergy
Touch the Spirit Realm
33%inclusion3 decks9 decks
31%synergy
Hopeless Nightmare
33%inclusion3 decks9 decks
33%synergy
Out of Time
33%inclusion3 decks9 decks
32%synergy
Sphere of Safety
33%inclusion3 decks9 decks
24%synergy
The Tale of Tamiyo
33%inclusion3 decks9 decks
33%synergy
Seal of Cleansing
33%inclusion3 decks9 decks
32%synergy
Dress Down
33%inclusion3 decks9 decks
31%synergy
Dazzling Theater // Prop Room
33%inclusion3 decks9 decks
32%synergy
Polluted Cistern // Dim Oubliette
33%inclusion3 decks9 decks
33%synergy
Sheltered by Ghosts
33%inclusion3 decks9 decks
31%synergy
Land Tax
33%inclusion3 decks9 decks
27%synergy
Hallowed Haunting
33%inclusion3 decks9 decks
31%synergy
Greater Auramancy
33%inclusion3 decks9 decks
29%synergy
Seal of Removal
33%inclusion3 decks9 decks
33%synergy
Defiled Crypt // Cadaver Lab
33%inclusion3 decks9 decks
33%synergy
Corroding Dragonstorm
25%inclusion2 decks8 decks
25%synergy
Darksteel Mutation
22%inclusion2 decks9 decks
16%synergy
Founding the Third Path
22%inclusion2 decks9 decks
22%synergy
Smuggler's Share
22%inclusion2 decks9 decks
20%synergy
Tinybones Joins Up
22%inclusion2 decks9 decks
21%synergy
Chronic Flooding
22%inclusion2 decks9 decks
22%synergy
Authority of the Consuls
22%inclusion2 decks9 decks
11%synergy
Shark Typhoon
22%inclusion2 decks9 decks
16%synergy
Timely Ward
22%inclusion2 decks9 decks
17%synergy
Monologue Tax
22%inclusion2 decks9 decks
16%synergy
Restricted Office // Lecture Hall
22%inclusion2 decks9 decks
20%synergy
Secrets of the Dead
22%inclusion2 decks9 decks
22%synergy
Oubliette
22%inclusion2 decks9 decks
21%synergy
Aura of Silence
22%inclusion2 decks9 decks
19%synergy
Phyrexian Arena
22%inclusion2 decks9 decks
8%synergy
Virtue of Persistence
22%inclusion2 decks9 decks
20%synergy
Sinister Concoction
22%inclusion2 decks9 decks
22%synergy
Roiling Dragonstorm
13%inclusion1 decks8 decks
12%synergy
Tempest Technique
13%inclusion1 decks8 decks
12%synergy
One with the Multiverse
11%inclusion1 decks9 decks
6%synergy
Counterbalance
11%inclusion1 decks9 decks
9%synergy
Utility Lands
Cephalid Coliseum
44%inclusion4 decks9 decks
41%synergy
Otawara, Soaring City
44%inclusion4 decks9 decks
25%synergy
Bojuka Bog
33%inclusion3 decks9 decks
6%synergy
Reliquary Tower
33%inclusion3 decks9 decks
0%synergy
Geier Reach Sanitarium
22%inclusion2 decks9 decks
18%synergy
Takenuma, Abandoned Mire
22%inclusion2 decks9 decks
16%synergy
Urborg, Tomb of Yawgmoth
22%inclusion2 decks9 decks
9%synergy
Minamo, School at Water's Edge
11%inclusion1 decks9 decks
7%synergy
Urza's Saga
11%inclusion1 decks9 decks
-1%synergy
Cabal Coffers
11%inclusion1 decks9 decks
8%synergy
Deserted Temple
11%inclusion1 decks9 decks
11%synergy
Vault of the Archangel
11%inclusion1 decks9 decks
5%synergy
Rogue's Passage
11%inclusion1 decks9 decks
2%synergy
Mana Artifacts
Sol Ring
100%inclusion9 decks9 decks
10%synergy
Arcane Signet
89%inclusion8 decks9 decks
1%synergy
Talisman of Progress
44%inclusion4 decks9 decks
2%synergy
Talisman of Hierarchy
44%inclusion4 decks9 decks
2%synergy
Talisman of Dominance
33%inclusion3 decks9 decks
-16%synergy
Fellwar Stone
33%inclusion3 decks9 decks
-1%synergy
Thought Vessel
22%inclusion2 decks9 decks
-2%synergy
Azorius Signet
22%inclusion2 decks9 decks
-11%synergy
Commander's Sphere
11%inclusion1 decks9 decks
-8%synergy
Patchwork Banner
11%inclusion1 decks9 decks
7%synergy
Dimir Signet
11%inclusion1 decks9 decks
-22%synergy
Orzhov Signet
11%inclusion1 decks9 decks
-24%synergy
Lands
Command Tower
100%inclusion9 decks9 decks
8%synergy
Swamp
100%inclusion9 decks9 decks
9%synergy
Island
100%inclusion9 decks9 decks
7%synergy
Plains
100%inclusion9 decks9 decks
9%synergy
Marsh Flats
100%inclusion9 decks9 decks
64%synergy
Polluted Delta
100%inclusion9 decks9 decks
63%synergy
Flooded Strand
100%inclusion9 decks9 decks
62%synergy
Godless Shrine
89%inclusion8 decks9 decks
39%synergy
Vault of Champions
89%inclusion8 decks9 decks
56%synergy
Hallowed Fountain
89%inclusion8 decks9 decks
40%synergy
Watery Grave
89%inclusion8 decks9 decks
39%synergy
Sea of Clouds
67%inclusion6 decks9 decks
31%synergy
Raffine's Tower
67%inclusion6 decks9 decks
26%synergy
Morphic Pool
67%inclusion6 decks9 decks
32%synergy
Tundra
56%inclusion5 decks9 decks
40%synergy
Undercity Sewers
56%inclusion5 decks9 decks
41%synergy
Shadowy Backstreet
56%inclusion5 decks9 decks
43%synergy
Exotic Orchard
56%inclusion5 decks9 decks
-3%synergy
Underground Sea
56%inclusion5 decks9 decks
40%synergy
Scrubland
56%inclusion5 decks9 decks
40%synergy
Meticulous Archive
56%inclusion5 decks9 decks
42%synergy
Prismatic Vista
44%inclusion4 decks9 decks
40%synergy
Isolated Chapel
44%inclusion4 decks9 decks
7%synergy
Underground River
44%inclusion4 decks9 decks
12%synergy
Mana Confluence
44%inclusion4 decks9 decks
31%synergy
Adarkar Wastes
44%inclusion4 decks9 decks
14%synergy
Gloomlake Verge
44%inclusion4 decks9 decks
33%synergy
Glacial Fortress
33%inclusion3 decks9 decks
-6%synergy
Bleachbone Verge
33%inclusion3 decks9 decks
25%synergy
Caves of Koilos
33%inclusion3 decks9 decks
-2%synergy
Shipwreck Marsh
33%inclusion3 decks9 decks
13%synergy
Drowned Catacomb
33%inclusion3 decks9 decks
-2%synergy
Sink into Stupor
33%inclusion3 decks9 decks
21%synergy
Shattered Sanctum
33%inclusion3 decks9 decks
17%synergy
Deserted Beach
33%inclusion3 decks9 decks
13%synergy
Floodfarm Verge
33%inclusion3 decks9 decks
22%synergy
Bloodstained Mire
33%inclusion3 decks9 decks
22%synergy
Misty Rainforest
22%inclusion2 decks9 decks
11%synergy
Fetid Heath
22%inclusion2 decks9 decks
11%synergy
Valgavoth's Lair
22%inclusion2 decks9 decks
19%synergy
Reflecting Pool
22%inclusion2 decks9 decks
14%synergy
Arcane Sanctum
22%inclusion2 decks9 decks
-32%synergy
Arid Mesa
22%inclusion2 decks9 decks
12%synergy
Sunken Hollow
22%inclusion2 decks9 decks
-17%synergy
City of Brass
22%inclusion2 decks9 decks
7%synergy
Starting Town
17%inclusion1 decks6 decks
13%synergy
Tainted Isle
11%inclusion1 decks9 decks
5%synergy
Windswept Heath
11%inclusion1 decks9 decks
1%synergy
Irrigated Farmland
11%inclusion1 decks9 decks
4%synergy
Tainted Field
11%inclusion1 decks9 decks
4%synergy
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