The Master of Keys (Commander) - Upgraded Enchantress

Background image for What if Thassa's Oracle Were Banned?
Harvey McGuinness
Sep 23, 2025
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.
Deck Filters
Cardsphere
Archidekt
Commander Spellbook
Moxfield
Scryfall
MTGStocks
Eiganjo Dynastorian
13%inclusion2 decks15 decks
13%synergy
Turbulent Moor
6.7%inclusion1 decks15 decks
6%synergy
Changing Loyalty
6.7%inclusion1 decks15 decks
6%synergy
Paramecia Coloniex
2.7%inclusion1 decks37 decks
3%synergy
Dream Beavers
2.7%inclusion1 decks37 decks
2%synergy
High Synergy Cards
Inquisitive Glimmer
87%inclusion116 decks134 decks
79%synergy
Entity Tracker
78%inclusion104 decks134 decks
71%synergy
Ripples of Undeath
72%inclusion96 decks134 decks
69%synergy
Gravebreaker Lamia
66%inclusion89 decks134 decks
65%synergy
Starfield Mystic
71%inclusion95 decks134 decks
64%synergy
Demon of Fate's Design
66%inclusion89 decks134 decks
61%synergy
Mesa Enchantress
68%inclusion91 decks134 decks
59%synergy
Scrabbling Skullcrab
57%inclusion77 decks134 decks
56%synergy
Animate Dead
66%inclusion88 decks134 decks
56%synergy
Fear of Sleep Paralysis
60%inclusion80 decks134 decks
55%synergy
Top Cards
Doomwake Giant
60%inclusion80 decks134 decks
54%synergy
Secret Arcade // Dusty Parlor
54%inclusion73 decks134 decks
50%synergy
Overlord of the Floodpits
54%inclusion72 decks134 decks
50%synergy
Swords to Plowshares
51%inclusion69 decks134 decks
-16%synergy
Necromancy
51%inclusion68 decks134 decks
46%synergy
Overlord of the Balemurk
50%inclusion67 decks134 decks
48%synergy
Mystic Remora
49%inclusion66 decks134 decks
29%synergy
Sphere of Safety
49%inclusion66 decks134 decks
40%synergy
Ondu Spiritdancer
49%inclusion66 decks134 decks
43%synergy
Dress Down
49%inclusion65 decks134 decks
46%synergy
Game Changers
Smothering Tithe
37%inclusion50 decks134 decks
6%synergy
Rhystic Study
23%inclusion31 decks134 decks
-8%synergy
Enlightened Tutor
9.0%inclusion12 decks134 decks
-10%synergy
Gifts Ungiven
8.2%inclusion11 decks134 decks
6%synergy
Serra's Sanctum
6.7%inclusion9 decks134 decks
5%synergy
Necropotence
6.0%inclusion8 decks134 decks
-1%synergy
Teferi's Protection
5.2%inclusion7 decks134 decks
-11%synergy
Farewell
5.2%inclusion7 decks134 decks
-7%synergy
Creatures
Victor, Valgavoth's Seneschal
48%inclusion64 decks134 decks
46%synergy
Zur, Eternal Schemer
48%inclusion64 decks134 decks
45%synergy
Fear of Impostors
43%inclusion57 decks134 decks
41%synergy
Ghostly Dancers
40%inclusion53 decks134 decks
37%synergy
Silent Hallcreeper
39%inclusion52 decks134 decks
34%synergy
Grim Guardian
29%inclusion39 decks134 decks
27%synergy
Heliod, the Radiant Dawn
28%inclusion38 decks134 decks
25%synergy
Zur the Enchanter
28%inclusion37 decks134 decks
22%synergy
Enduring Curiosity
27%inclusion36 decks134 decks
19%synergy
Archon of Sun's Grace
23%inclusion31 decks134 decks
19%synergy
Soaring Lightbringer
22%inclusion30 decks134 decks
18%synergy
Sage of Mysteries
22%inclusion30 decks134 decks
22%synergy
Moon-Blessed Cleric
19%inclusion26 decks134 decks
15%synergy
Balemurk Leech
19%inclusion25 decks134 decks
18%synergy
Ancient Cellarspawn
19%inclusion25 decks134 decks
16%synergy
Abdel Adrian, Gorion's Ward
18%inclusion24 decks134 decks
16%synergy
Archetype of Imagination
17%inclusion23 decks134 decks
12%synergy
Overlord of the Mistmoors
16%inclusion21 decks134 decks
14%synergy
Mindwrack Harpy
15%inclusion20 decks134 decks
15%synergy
Skullsnap Nuisance
14%inclusion19 decks134 decks
14%synergy
Aminatou, Veil Piercer
14%inclusion19 decks134 decks
13%synergy
Alseid of Life's Bounty
14%inclusion19 decks134 decks
13%synergy
Gremlin Tamer
13%inclusion17 decks134 decks
12%synergy
Lotho, Corrupt Shirriff
12%inclusion16 decks134 decks
-5%synergy
Witch Enchanter
11%inclusion15 decks134 decks
4%synergy
Fear of Infinity
11%inclusion15 decks134 decks
11%synergy
Athreos, Shroud-Veiled
11%inclusion15 decks134 decks
7%synergy
Nashi, Searcher in the Dark
11%inclusion15 decks134 decks
11%synergy
Ledger Shredder
10%inclusion14 decks134 decks
2%synergy
Hullbreaker Horror
10%inclusion14 decks134 decks
4%synergy
Stenn, Paranoid Partisan
10%inclusion13 decks134 decks
8%synergy
Starnheim Courser
8.2%inclusion11 decks134 decks
4%synergy
Hedron Crab
8.2%inclusion11 decks134 decks
8%synergy
Spirited Companion
8.2%inclusion11 decks134 decks
6%synergy
Nightmare Shepherd
8.2%inclusion11 decks134 decks
6%synergy
Auramancer
8.2%inclusion11 decks134 decks
5%synergy
Sun Titan
7.5%inclusion10 decks134 decks
-1%synergy
Creeping Peeper
7.5%inclusion10 decks134 decks
7%synergy
Neerdiv, Devious Diver
6.8%inclusion9 decks133 decks
7%synergy
Esper Sentinel
6.7%inclusion9 decks134 decks
-21%synergy
Fear of Isolation
6.0%inclusion8 decks134 decks
6%synergy
Valley Floodcaller
6.0%inclusion8 decks134 decks
2%synergy
Enduring Innocence
6.0%inclusion8 decks134 decks
4%synergy
Fear of the Dark
6.0%inclusion8 decks134 decks
6%synergy
Laboratory Maniac
6.0%inclusion8 decks134 decks
3%synergy
Ghostly Keybearer
6.0%inclusion8 decks134 decks
6%synergy
Twilight Diviner
5.9%inclusion3 decks51 decks
4%synergy
Emet-Selch of the Third Seat
5.7%inclusion6 decks106 decks
-4%synergy
Summon: Yojimbo
5.7%inclusion6 decks106 decks
5%synergy
Solemn Simulacrum
5.2%inclusion7 decks134 decks
-9%synergy
Instants
An Offer You Can't Refuse
33%inclusion44 decks134 decks
6%synergy
Arcane Denial
31%inclusion42 decks134 decks
11%synergy
Counterspell
31%inclusion42 decks134 decks
-10%synergy
Path to Exile
28%inclusion38 decks134 decks
-14%synergy
Entomb
28%inclusion37 decks134 decks
21%synergy
Void Rend
25%inclusion34 decks134 decks
-9%synergy
Dark Ritual
24%inclusion32 decks134 decks
4%synergy
Thirst for Meaning
17%inclusion23 decks134 decks
16%synergy
Negate
16%inclusion22 decks134 decks
0%synergy
Swan Song
16%inclusion21 decks134 decks
-4%synergy
Frantic Search
15%inclusion20 decks134 decks
-3%synergy
Dovin's Veto
15%inclusion20 decks134 decks
-11%synergy
Brainstorm
12%inclusion16 decks134 decks
-5%synergy
Sink into Stupor
12%inclusion16 decks134 decks
-1%synergy
Fell the Profane
10%inclusion14 decks134 decks
2%synergy
Anguished Unmaking
10%inclusion14 decks134 decks
-15%synergy
Otherworldly Gaze
10%inclusion14 decks134 decks
8%synergy
Inkshield
10%inclusion14 decks134 decks
1%synergy
Fact or Fiction
8.2%inclusion11 decks134 decks
5%synergy
Faithful Mending
7.5%inclusion10 decks134 decks
4%synergy
Strix Serenade
6.7%inclusion9 decks134 decks
3%synergy
Generous Gift
6.0%inclusion8 decks134 decks
-8%synergy
Cabal Ritual
5.2%inclusion7 decks134 decks
2%synergy
Mana Drain
5.2%inclusion7 decks134 decks
-12%synergy
Get Out
5.2%inclusion7 decks134 decks
5%synergy
Utter End
5.2%inclusion7 decks134 decks
-1%synergy
Withering Torment
5.2%inclusion7 decks134 decks
4%synergy
Sorceries
Sevinne's Reclamation
42%inclusion56 decks134 decks
33%synergy
Redress Fate
38%inclusion51 decks134 decks
32%synergy
Windfall
25%inclusion34 decks134 decks
12%synergy
Dance of the Manse
22%inclusion29 decks134 decks
18%synergy
Reanimate
21%inclusion28 decks134 decks
5%synergy
Extinguish All Hope
21%inclusion28 decks134 decks
19%synergy
Singularity Rupture
21%inclusion20 decks97 decks
18%synergy
Glimpse the Unthinkable
14%inclusion19 decks134 decks
14%synergy
Resurgent Belief
13%inclusion18 decks134 decks
11%synergy
Idyllic Tutor
13%inclusion18 decks134 decks
9%synergy
Toxic Deluge
13%inclusion18 decks134 decks
-6%synergy
Supreme Verdict
12%inclusion16 decks134 decks
-3%synergy
Ponder
10%inclusion14 decks134 decks
1%synergy
Time Wipe
10%inclusion14 decks134 decks
4%synergy
Damn
9.0%inclusion12 decks134 decks
-11%synergy
Space-Time Anomaly
8.3%inclusion8 decks96 decks
7%synergy
Demonic Counsel
8.2%inclusion11 decks134 decks
7%synergy
Unmarked Grave
7.5%inclusion10 decks134 decks
6%synergy
Wrath of God
7.5%inclusion10 decks134 decks
4%synergy
Buried Alive
7.5%inclusion10 decks134 decks
3%synergy
Traumatize
6.7%inclusion9 decks134 decks
6%synergy
Austere Command
6.0%inclusion8 decks134 decks
-3%synergy
Open the Vaults
5.2%inclusion7 decks134 decks
4%synergy
Replenish
5.2%inclusion7 decks134 decks
3%synergy
Brilliant Restoration
5.2%inclusion7 decks134 decks
3%synergy
Utility Artifacts
Mesmeric Orb
19%inclusion26 decks134 decks
18%synergy
Cloud Key
18%inclusion24 decks134 decks
15%synergy
Lightning Greaves
10%inclusion13 decks134 decks
-13%synergy
Keys to the House
8.2%inclusion11 decks134 decks
8%synergy
Wayfarer's Bauble
7.5%inclusion10 decks134 decks
0%synergy
Swiftfoot Boots
7.5%inclusion10 decks134 decks
-17%synergy
Whip of Erebos
6.0%inclusion8 decks134 decks
4%synergy
Enchantments
Grasp of Fate
48%inclusion64 decks134 decks
42%synergy
Mirrormade
47%inclusion63 decks134 decks
37%synergy
Estrid's Invocation
46%inclusion62 decks134 decks
42%synergy
Propaganda
46%inclusion61 decks134 decks
17%synergy
Cemetery Tampering
43%inclusion58 decks134 decks
43%synergy
Seal of Cleansing
43%inclusion57 decks134 decks
41%synergy
Amphibian Downpour
41%inclusion55 decks134 decks
37%synergy
Ghostly Prison
41%inclusion55 decks134 decks
19%synergy
Sigil of the Empty Throne
38%inclusion51 decks134 decks
32%synergy
Blind Obedience
36%inclusion48 decks134 decks
24%synergy
Monologue Tax
34%inclusion46 decks134 decks
28%synergy
Cacophony Unleashed
34%inclusion45 decks134 decks
32%synergy
Defiled Crypt // Cadaver Lab
31%inclusion42 decks134 decks
31%synergy
Starfield of Nyx
31%inclusion41 decks134 decks
27%synergy
Darksteel Mutation
28%inclusion38 decks134 decks
22%synergy
Stillness in Motion
28%inclusion33 decks119 decks
27%synergy
Polluted Cistern // Dim Oubliette
27%inclusion36 decks134 decks
26%synergy
Dance of the Dead
25%inclusion34 decks134 decks
23%synergy
The Tale of Tamiyo
25%inclusion34 decks134 decks
25%synergy
Restricted Office // Lecture Hall
25%inclusion33 decks134 decks
23%synergy
Ethereal Armor
25%inclusion33 decks134 decks
20%synergy
Copy Enchantment
22%inclusion30 decks134 decks
18%synergy
Seal of Removal
22%inclusion30 decks134 decks
22%synergy
Hallowed Haunting
22%inclusion29 decks134 decks
19%synergy
The Meathook Massacre
21%inclusion28 decks134 decks
18%synergy
Extravagant Replication
21%inclusion28 decks134 decks
16%synergy
Imprisoned in the Moon
20%inclusion27 decks134 decks
14%synergy
Timely Ward
20%inclusion27 decks134 decks
15%synergy
Greater Auramancy
20%inclusion27 decks134 decks
16%synergy
Touch the Spirit Realm
19%inclusion26 decks134 decks
17%synergy
Sheltered by Ghosts
19%inclusion26 decks134 decks
17%synergy
Out of the Tombs
19%inclusion25 decks134 decks
18%synergy
Phyrexian Arena
18%inclusion24 decks134 decks
4%synergy
Central Elevator // Promising Stairs
17%inclusion23 decks134 decks
17%synergy
All That Glitters
17%inclusion23 decks134 decks
8%synergy
Mirror Room // Fractured Realm
17%inclusion23 decks134 decks
15%synergy
Secrets of the Dead
16%inclusion22 decks134 decks
16%synergy
Cramped Vents // Access Maze
16%inclusion21 decks134 decks
13%synergy
Authority of the Consuls
16%inclusion21 decks134 decks
3%synergy
Leyline of Anticipation
16%inclusion21 decks134 decks
11%synergy
Static Prison
16%inclusion21 decks134 decks
15%synergy
Bottomless Pool // Locker Room
16%inclusion21 decks134 decks
14%synergy
Oubliette
16%inclusion21 decks134 decks
14%synergy
Dazzling Theater // Prop Room
15%inclusion20 decks134 decks
14%synergy
Nowhere to Run
15%inclusion20 decks134 decks
14%synergy
Shark Typhoon
14%inclusion19 decks134 decks
8%synergy
Aura of Silence
13%inclusion18 decks134 decks
10%synergy
Land Tax
13%inclusion18 decks134 decks
7%synergy
Trouble in Pairs
13%inclusion18 decks134 decks
8%synergy
Teval's Judgment
13%inclusion16 decks120 decks
13%synergy
Battles
Invasion of Theros
6.7%inclusion9 decks134 decks
5%synergy
Utility Lands
Hall of Heliod's Generosity
66%inclusion89 decks134 decks
53%synergy
Bojuka Bog
46%inclusion61 decks134 decks
19%synergy
Otawara, Soaring City
19%inclusion26 decks134 decks
0%synergy
Cephalid Coliseum
18%inclusion24 decks134 decks
14%synergy
Takenuma, Abandoned Mire
15%inclusion20 decks134 decks
9%synergy
Reliquary Tower
13%inclusion17 decks134 decks
-21%synergy
Halimar Depths
10%inclusion13 decks134 decks
5%synergy
Rogue's Passage
7.5%inclusion10 decks134 decks
-2%synergy
Urborg, Tomb of Yawgmoth
6.7%inclusion9 decks134 decks
-6%synergy
Temple of the False God
6.7%inclusion9 decks134 decks
-1%synergy
Adagia, Windswept Bastion
6.2%inclusion6 decks97 decks
4%synergy
Eiganjo, Seat of the Empire
5.2%inclusion7 decks134 decks
0%synergy
Geier Reach Sanitarium
5.2%inclusion7 decks134 decks
1%synergy
Mana Artifacts
Sol Ring
89%inclusion119 decks134 decks
-1%synergy
Arcane Signet
86%inclusion115 decks134 decks
-2%synergy
Talisman of Progress
49%inclusion66 decks134 decks
5%synergy
Talisman of Dominance
49%inclusion66 decks134 decks
0%synergy
Talisman of Hierarchy
49%inclusion65 decks134 decks
4%synergy
Azorius Signet
36%inclusion48 decks134 decks
5%synergy
Orzhov Signet
33%inclusion44 decks134 decks
0%synergy
Fellwar Stone
31%inclusion42 decks134 decks
-2%synergy
Dimir Signet
27%inclusion36 decks134 decks
-4%synergy
Mind Stone
13%inclusion17 decks134 decks
0%synergy
Commander's Sphere
10%inclusion14 decks134 decks
-8%synergy
Chromatic Lantern
6.0%inclusion8 decks134 decks
-7%synergy
Lands
Island
98%inclusion131 decks134 decks
5%synergy
Swamp
97%inclusion130 decks134 decks
5%synergy
Plains
96%inclusion129 decks134 decks
4%synergy
Command Tower
94%inclusion126 decks134 decks
2%synergy
Arcane Sanctum
63%inclusion85 decks134 decks
9%synergy
Adarkar Wastes
57%inclusion77 decks134 decks
26%synergy
Caves of Koilos
57%inclusion76 decks134 decks
21%synergy
Exotic Orchard
54%inclusion72 decks134 decks
-5%synergy
Underground River
53%inclusion71 decks134 decks
19%synergy
Hallowed Fountain
52%inclusion70 decks134 decks
2%synergy
Watery Grave
51%inclusion68 decks134 decks
0%synergy
Godless Shrine
50%inclusion67 decks134 decks
-1%synergy
Isolated Chapel
45%inclusion60 decks134 decks
4%synergy
Flooded Strand
45%inclusion60 decks134 decks
6%synergy
Raffine's Tower
43%inclusion57 decks134 decks
2%synergy
Polluted Delta
43%inclusion57 decks134 decks
5%synergy
Glacial Fortress
40%inclusion53 decks134 decks
-2%synergy
Valgavoth's Lair
40%inclusion53 decks134 decks
37%synergy
Marsh Flats
39%inclusion52 decks134 decks
3%synergy
Drowned Catacomb
38%inclusion51 decks134 decks
1%synergy
Undercity Sewers
37%inclusion49 decks134 decks
22%synergy
Vault of Champions
36%inclusion48 decks134 decks
3%synergy
Sea of Clouds
34%inclusion46 decks134 decks
-1%synergy
Meticulous Archive
34%inclusion46 decks134 decks
20%synergy
Shadowy Backstreet
32%inclusion43 decks134 decks
19%synergy
Prairie Stream
32%inclusion43 decks134 decks
-8%synergy
Sunken Hollow
31%inclusion41 decks134 decks
-9%synergy
Floodfarm Verge
31%inclusion41 decks134 decks
19%synergy
Morphic Pool
29%inclusion39 decks134 decks
-5%synergy
Azorius Chancery
27%inclusion36 decks134 decks
13%synergy
Temple of Enlightenment
27%inclusion36 decks134 decks
11%synergy
Gloomlake Verge
27%inclusion36 decks134 decks
16%synergy
Contaminated Landscape
25%inclusion34 decks134 decks
11%synergy
Evolving Wilds
25%inclusion34 decks134 decks
1%synergy
Temple of Silence
25%inclusion34 decks134 decks
7%synergy
Deserted Beach
25%inclusion34 decks134 decks
5%synergy
Terramorphic Expanse
24%inclusion32 decks134 decks
8%synergy
Temple of Deceit
24%inclusion32 decks134 decks
7%synergy
Shipwreck Marsh
24%inclusion32 decks134 decks
3%synergy
Obscura Storefront
22%inclusion30 decks134 decks
13%synergy
Dimir Aqueduct
19%inclusion26 decks134 decks
6%synergy
Ash Barrens
19%inclusion25 decks134 decks
8%synergy
Orzhov Basilica
19%inclusion25 decks134 decks
3%synergy
Tainted Field
16%inclusion22 decks134 decks
9%synergy
Shattered Sanctum
16%inclusion21 decks134 decks
-1%synergy
Tainted Isle
13%inclusion18 decks134 decks
7%synergy
Fabled Passage
13%inclusion18 decks134 decks
6%synergy
Fetid Heath
13%inclusion18 decks134 decks
1%synergy
Skycloud Expanse
13%inclusion18 decks134 decks
-2%synergy
Bleachbone Verge
13%inclusion17 decks133 decks
4%synergy