The Master of Keys (Commander) - Topdeck

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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Secret Arcade // Dusty Parlor
88%inclusion21 decks24 decks
82%synergy
Sphere of Safety
88%inclusion21 decks24 decks
78%synergy
Demon of Fate's Design
83%inclusion20 decks24 decks
78%synergy
Ondu Spiritdancer
83%inclusion20 decks24 decks
77%synergy
Starfield Mystic
83%inclusion20 decks24 decks
77%synergy
Moon-Blessed Cleric
79%inclusion19 decks24 decks
74%synergy
Hall of Heliod's Generosity
88%inclusion21 decks24 decks
74%synergy
Mesa Enchantress
83%inclusion20 decks24 decks
74%synergy
Fear of Sleep Paralysis
79%inclusion19 decks24 decks
74%synergy
Doomwake Giant
79%inclusion19 decks24 decks
73%synergy
Top Cards
Mirrormade
79%inclusion19 decks24 decks
69%synergy
Arcane Denial
79%inclusion19 decks24 decks
59%synergy
Swords to Plowshares
79%inclusion19 decks24 decks
11%synergy
Brainstorm
75%inclusion18 decks24 decks
58%synergy
Soaring Lightbringer
75%inclusion18 decks24 decks
70%synergy
Shark Typhoon
75%inclusion18 decks24 decks
69%synergy
Ponder
71%inclusion17 decks24 decks
62%synergy
Telling Time
71%inclusion17 decks24 decks
68%synergy
Sigil of the Empty Throne
71%inclusion17 decks24 decks
65%synergy
Timely Ward
71%inclusion17 decks24 decks
66%synergy
Game Changers
Smothering Tithe
38%inclusion9 decks24 decks
5%synergy
Rhystic Study
25%inclusion6 decks24 decks
-7%synergy
Enlightened Tutor
17%inclusion4 decks24 decks
-3%synergy
Vampiric Tutor
17%inclusion4 decks24 decks
-1%synergy
Thassa's Oracle
13%inclusion3 decks24 decks
3%synergy
Demonic Tutor
13%inclusion3 decks24 decks
-9%synergy
Ancient Tomb
8.3%inclusion2 decks24 decks
-5%synergy
Consecrated Sphinx
8.3%inclusion2 decks24 decks
2%synergy
Serra's Sanctum
8.3%inclusion2 decks24 decks
7%synergy
Cyclonic Rift
8.3%inclusion2 decks24 decks
-16%synergy
Creatures
Athreos, Shroud-Veiled
71%inclusion17 decks24 decks
66%synergy
Aminatou, Veil Piercer
71%inclusion17 decks24 decks
69%synergy
Ancient Cellarspawn
67%inclusion16 decks24 decks
63%synergy
Archetype of Imagination
58%inclusion14 decks24 decks
54%synergy
Auramancer
58%inclusion14 decks24 decks
55%synergy
Nightmare Shepherd
54%inclusion13 decks24 decks
52%synergy
Prognostic Sphinx
50%inclusion12 decks24 decks
49%synergy
Arvinox, the Mind Flail
50%inclusion12 decks24 decks
48%synergy
Verge Rangers
50%inclusion12 decks24 decks
49%synergy
Metamorphosis Fanatic
46%inclusion11 decks24 decks
41%synergy
Solemn Simulacrum
42%inclusion10 decks24 decks
27%synergy
Inquisitive Glimmer
42%inclusion10 decks24 decks
34%synergy
Dream Eater
38%inclusion9 decks24 decks
37%synergy
Phenomenon Investigators
38%inclusion9 decks24 decks
37%synergy
Zur, Eternal Schemer
33%inclusion8 decks24 decks
30%synergy
Burnished Hart
29%inclusion7 decks24 decks
26%synergy
Zur the Enchanter
25%inclusion6 decks24 decks
20%synergy
Fear of Surveillance
21%inclusion5 decks24 decks
21%synergy
Victor, Valgavoth's Seneschal
21%inclusion5 decks24 decks
19%synergy
Ghostly Dancers
21%inclusion5 decks24 decks
18%synergy
Entity Tracker
21%inclusion5 decks24 decks
14%synergy
Curator of Destinies
20%inclusion1 decks5 decks
19%synergy
Gravebreaker Lamia
17%inclusion4 decks24 decks
16%synergy
Overlord of the Floodpits
17%inclusion4 decks24 decks
13%synergy
Overlord of the Balemurk
17%inclusion4 decks24 decks
15%synergy
Silent Hallcreeper
17%inclusion4 decks24 decks
12%synergy
Skullsnap Nuisance
17%inclusion4 decks24 decks
16%synergy
Grim Guardian
17%inclusion4 decks24 decks
14%synergy
Heliod, the Radiant Dawn
17%inclusion4 decks24 decks
13%synergy
Fear of Infinity
13%inclusion3 decks24 decks
12%synergy
Displacer Kitten
13%inclusion3 decks24 decks
5%synergy
Scrabbling Skullcrab
13%inclusion3 decks24 decks
11%synergy
Archon of Sun's Grace
13%inclusion3 decks24 decks
8%synergy
Esper Sentinel
13%inclusion3 decks24 decks
-15%synergy
Fear of Impostors
13%inclusion3 decks24 decks
11%synergy
Appendage Amalgam
13%inclusion3 decks24 decks
12%synergy
Nashi, Searcher in the Dark
13%inclusion3 decks24 decks
12%synergy
Ledger Shredder
13%inclusion3 decks24 decks
4%synergy
Fear of Isolation
8.3%inclusion2 decks24 decks
8%synergy
Lurrus of the Dream-Den
8.3%inclusion2 decks24 decks
7%synergy
Enduring Tenacity
8.3%inclusion2 decks24 decks
1%synergy
Spirited Companion
8.3%inclusion2 decks24 decks
6%synergy
Enduring Curiosity
8.3%inclusion2 decks24 decks
1%synergy
Balemurk Leech
8.3%inclusion2 decks24 decks
8%synergy
Abdel Adrian, Gorion's Ward
8.3%inclusion2 decks24 decks
7%synergy
Mindwrack Harpy
8.3%inclusion2 decks24 decks
8%synergy
Instants
Otherworldly Gaze
71%inclusion17 decks24 decks
69%synergy
Return to Dust
58%inclusion14 decks24 decks
55%synergy
Inkshield
58%inclusion14 decks24 decks
49%synergy
Thirst for Meaning
54%inclusion13 decks24 decks
53%synergy
Utter End
50%inclusion12 decks24 decks
43%synergy
Consider
29%inclusion7 decks24 decks
27%synergy
Mana Drain
13%inclusion3 decks24 decks
-5%synergy
Curate
13%inclusion3 decks24 decks
12%synergy
Counterspell
13%inclusion3 decks24 decks
-29%synergy
Ephara's Dispersal
8.3%inclusion2 decks24 decks
8%synergy
Entomb
8.3%inclusion2 decks24 decks
1%synergy
Dawn's Truce
8.3%inclusion2 decks24 decks
4%synergy
Silence
8.3%inclusion2 decks24 decks
-2%synergy
Sinister Sabotage
8.3%inclusion2 decks24 decks
8%synergy
Demonic Consultation
8.3%inclusion2 decks24 decks
0%synergy
Mystical Tutor
8.3%inclusion2 decks24 decks
-3%synergy
Sorceries
Redress Fate
67%inclusion16 decks24 decks
61%synergy
Diabolic Vision
63%inclusion15 decks24 decks
60%synergy
Time Wipe
58%inclusion14 decks24 decks
51%synergy
Portent
58%inclusion14 decks24 decks
55%synergy
Terminus
54%inclusion13 decks24 decks
50%synergy
Aminatou's Augury
46%inclusion11 decks24 decks
44%synergy
Read the Bones
42%inclusion10 decks24 decks
37%synergy
Entreat the Angels
33%inclusion8 decks24 decks
31%synergy
Sevinne's Reclamation
17%inclusion4 decks24 decks
8%synergy
Resurgent Belief
13%inclusion3 decks24 decks
10%synergy
Dance of the Manse
13%inclusion3 decks24 decks
9%synergy
Extinguish All Hope
8.3%inclusion2 decks24 decks
7%synergy
Utility Artifacts
Brainstone
54%inclusion13 decks24 decks
53%synergy
Sensei's Divining Top
25%inclusion6 decks24 decks
15%synergy
Cloud Key
8.3%inclusion2 decks24 decks
5%synergy
Scroll Rack
8.3%inclusion2 decks24 decks
6%synergy
Enchantments
One with the Multiverse
67%inclusion16 decks24 decks
62%synergy
Monologue Tax
67%inclusion16 decks24 decks
60%synergy
Extravagant Replication
63%inclusion15 decks24 decks
57%synergy
Spirit-Sister's Call
63%inclusion15 decks24 decks
61%synergy
Cramped Vents // Access Maze
58%inclusion14 decks24 decks
56%synergy
The Eldest Reborn
58%inclusion14 decks24 decks
56%synergy
Cast Out
58%inclusion14 decks24 decks
55%synergy
Life Insurance
42%inclusion10 decks24 decks
40%synergy
Bottomless Pool // Locker Room
42%inclusion10 decks24 decks
40%synergy
Starfield of Nyx
33%inclusion8 decks24 decks
29%synergy
Necromancy
25%inclusion6 decks24 decks
20%synergy
Animate Dead
25%inclusion6 decks24 decks
15%synergy
Ripples of Undeath
21%inclusion5 decks24 decks
18%synergy
Estrid's Invocation
21%inclusion5 decks24 decks
16%synergy
Mystic Remora
21%inclusion5 decks24 decks
0%synergy
Valkyrie's Call
20%inclusion1 decks5 decks
19%synergy
Blind Obedience
17%inclusion4 decks24 decks
4%synergy
Omniscience
17%inclusion4 decks24 decks
13%synergy
Dress Down
17%inclusion4 decks24 decks
14%synergy
Greater Auramancy
17%inclusion4 decks24 decks
12%synergy
Mirror Room // Fractured Realm
17%inclusion4 decks24 decks
14%synergy
Ghostly Prison
17%inclusion4 decks24 decks
-5%synergy
Propaganda
17%inclusion4 decks24 decks
-10%synergy
Grasp of Fate
13%inclusion3 decks24 decks
6%synergy
Cacophony Unleashed
13%inclusion3 decks24 decks
11%synergy
Case of the Shifting Visage
13%inclusion3 decks24 decks
12%synergy
Penance
13%inclusion3 decks24 decks
11%synergy
Cemetery Tampering
13%inclusion3 decks24 decks
12%synergy
Leyline of Anticipation
13%inclusion3 decks24 decks
8%synergy
Dazzling Theater // Prop Room
13%inclusion3 decks24 decks
11%synergy
Polluted Cistern // Dim Oubliette
13%inclusion3 decks24 decks
12%synergy
Black Market Connections
13%inclusion3 decks24 decks
-2%synergy
Land Tax
13%inclusion3 decks24 decks
6%synergy
Hallowed Haunting
13%inclusion3 decks24 decks
10%synergy
Trouble in Pairs
13%inclusion3 decks24 decks
7%synergy
Search for Azcanta
13%inclusion3 decks24 decks
11%synergy
Darksteel Mutation
8.3%inclusion2 decks24 decks
2%synergy
Omen of the Dead
8.3%inclusion2 decks24 decks
8%synergy
The Meathook Massacre
8.3%inclusion2 decks24 decks
5%synergy
Underwater Tunnel // Slimy Aquarium
8.3%inclusion2 decks24 decks
8%synergy
Touch the Spirit Realm
8.3%inclusion2 decks24 decks
6%synergy
Curse of Unbinding
8.3%inclusion2 decks24 decks
8%synergy
Central Elevator // Promising Stairs
8.3%inclusion2 decks24 decks
8%synergy
All That Glitters
8.3%inclusion2 decks24 decks
0%synergy
Enhanced Surveillance
8.3%inclusion2 decks24 decks
8%synergy
Enchanted Evening
8.3%inclusion2 decks24 decks
7%synergy
Storm of Saruman
8.3%inclusion2 decks24 decks
6%synergy
Mind's Dilation
8.3%inclusion2 decks24 decks
5%synergy
Ethereal Armor
8.3%inclusion2 decks24 decks
4%synergy
Seal of Removal
8.3%inclusion2 decks24 decks
8%synergy
Planeswalkers
Teferi, Time Raveler
17%inclusion4 decks24 decks
8%synergy
Jace, the Mind Sculptor
8.3%inclusion2 decks24 decks
7%synergy
Utility Lands
Bojuka Bog
67%inclusion16 decks24 decks
39%synergy
Halimar Depths
67%inclusion16 decks24 decks
62%synergy
Spymaster's Vault
8.3%inclusion2 decks24 decks
6%synergy
Otawara, Soaring City
8.3%inclusion2 decks24 decks
-11%synergy
Mana Artifacts
Sol Ring
100%inclusion24 decks24 decks
10%synergy
Arcane Signet
96%inclusion23 decks24 decks
8%synergy
Mind Stone
71%inclusion17 decks24 decks
58%synergy
Orzhov Signet
67%inclusion16 decks24 decks
32%synergy
Azorius Signet
67%inclusion16 decks24 decks
34%synergy
Commander's Sphere
63%inclusion15 decks24 decks
43%synergy
Talisman of Progress
8.3%inclusion2 decks24 decks
-35%synergy
Lotus Petal
8.3%inclusion2 decks24 decks
-2%synergy
Talisman of Dominance
8.3%inclusion2 decks24 decks
-41%synergy
Talisman of Hierarchy
8.3%inclusion2 decks24 decks
-35%synergy
Lands
Island
96%inclusion23 decks24 decks
3%synergy
Plains
96%inclusion23 decks24 decks
4%synergy
Swamp
92%inclusion22 decks24 decks
0%synergy
Command Tower
88%inclusion21 decks24 decks
-5%synergy
Temple of Deceit
83%inclusion20 decks24 decks
65%synergy
Temple of Enlightenment
83%inclusion20 decks24 decks
66%synergy
Temple of Silence
79%inclusion19 decks24 decks
60%synergy
Caves of Koilos
71%inclusion17 decks24 decks
35%synergy
Arcane Sanctum
71%inclusion17 decks24 decks
16%synergy
Terramorphic Expanse
67%inclusion16 decks24 decks
50%synergy
Tainted Field
67%inclusion16 decks24 decks
60%synergy
Underground River
67%inclusion16 decks24 decks
34%synergy
Adarkar Wastes
67%inclusion16 decks24 decks
36%synergy
Obscura Storefront
67%inclusion16 decks24 decks
56%synergy
Tainted Isle
63%inclusion15 decks24 decks
56%synergy
Azorius Chancery
63%inclusion15 decks24 decks
48%synergy
Dimir Aqueduct
63%inclusion15 decks24 decks
48%synergy
Evolving Wilds
63%inclusion15 decks24 decks
37%synergy
Orzhov Basilica
63%inclusion15 decks24 decks
47%synergy
Thriving Isle
58%inclusion14 decks24 decks
54%synergy
Thriving Moor
58%inclusion14 decks24 decks
54%synergy
Thriving Heath
58%inclusion14 decks24 decks
54%synergy
Ash Barrens
46%inclusion11 decks24 decks
35%synergy
Raffine's Tower
33%inclusion8 decks24 decks
-8%synergy
Meticulous Archive
29%inclusion7 decks24 decks
16%synergy
Flooded Strand
21%inclusion5 decks24 decks
-17%synergy
Undercity Sewers
17%inclusion4 decks24 decks
3%synergy
Shadowy Backstreet
17%inclusion4 decks24 decks
4%synergy
Exotic Orchard
17%inclusion4 decks24 decks
-42%synergy
Marsh Flats
17%inclusion4 decks24 decks
-19%synergy
Polluted Delta
17%inclusion4 decks24 decks
-21%synergy
Tundra
13%inclusion3 decks24 decks
-3%synergy
Prairie Stream
13%inclusion3 decks24 decks
-28%synergy
Valgavoth's Lair
13%inclusion3 decks24 decks
10%synergy
Sea of Clouds
13%inclusion3 decks24 decks
-23%synergy
Godless Shrine
13%inclusion3 decks24 decks
-38%synergy
Scrubland
13%inclusion3 decks24 decks
-3%synergy
Vault of Champions
13%inclusion3 decks24 decks
-20%synergy
Deserted Beach
13%inclusion3 decks24 decks
-8%synergy
Hallowed Fountain
13%inclusion3 decks24 decks
-37%synergy
Watery Grave
13%inclusion3 decks24 decks
-37%synergy
Underground Sea
8.3%inclusion2 decks24 decks
-7%synergy
Shipwreck Marsh
8.3%inclusion2 decks24 decks
-12%synergy
Drowned Catacomb
8.3%inclusion2 decks24 decks
-27%synergy
Seachrome Coast
8.3%inclusion2 decks24 decks
4%synergy
Morphic Pool
8.3%inclusion2 decks24 decks
-26%synergy
Shattered Sanctum
8.3%inclusion2 decks24 decks
-8%synergy
Shineshadow Snarl
8.3%inclusion2 decks24 decks
-2%synergy
Sunken Hollow
8.3%inclusion2 decks24 decks
-31%synergy
Dromar's Cavern
8.3%inclusion2 decks24 decks
6%synergy
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