The Master of Keys (Commander) - Budget Optimized

The Master of Keys
Rank #307
26decks
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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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Commander Spellbook
Moxfield
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Creatures
Instants
Sorceries
Utility Artifacts
Enchantments
Utility Lands
Mana Artifacts
Lands
Back to Top
Mesa Enchantress
81%inclusion21 decks26 decks
72%synergy
Secret Arcade // Dusty Parlor
73%inclusion19 decks26 decks
68%synergy
Ondu Spiritdancer
73%inclusion19 decks26 decks
67%synergy
Starfield Mystic
73%inclusion19 decks26 decks
66%synergy
Scrabbling Skullcrab
65%inclusion17 decks26 decks
64%synergy
Mirrormade
73%inclusion19 decks26 decks
63%synergy
Demon of Fate's Design
65%inclusion17 decks26 decks
60%synergy
Inquisitive Glimmer
65%inclusion17 decks26 decks
58%synergy
Gravebreaker Lamia
58%inclusion15 decks26 decks
57%synergy
Doomwake Giant
58%inclusion15 decks26 decks
52%synergy
Top Cards
Swords to Plowshares
73%inclusion19 decks26 decks
5%synergy
Sigil of the Empty Throne
54%inclusion14 decks26 decks
48%synergy
Sphere of Safety
54%inclusion14 decks26 decks
44%synergy
Entity Tracker
54%inclusion14 decks26 decks
48%synergy
Extravagant Replication
50%inclusion13 decks26 decks
45%synergy
Moon-Blessed Cleric
50%inclusion13 decks26 decks
45%synergy
Fear of Impostors
50%inclusion13 decks26 decks
49%synergy
Timely Ward
50%inclusion13 decks26 decks
45%synergy
Fear of Sleep Paralysis
50%inclusion13 decks26 decks
45%synergy
Archetype of Imagination
50%inclusion13 decks26 decks
45%synergy
Game Changers
Gifts Ungiven
19%inclusion5 decks26 decks
17%synergy
Notion Thief
15%inclusion4 decks26 decks
8%synergy
Creatures
Soaring Lightbringer
42%inclusion11 decks26 decks
37%synergy
Victor, Valgavoth's Seneschal
42%inclusion11 decks26 decks
40%synergy
Ghostly Dancers
42%inclusion11 decks26 decks
40%synergy
Aminatou, Veil Piercer
38%inclusion10 decks26 decks
37%synergy
Overlord of the Floodpits
35%inclusion9 decks26 decks
31%synergy
Balemurk Leech
31%inclusion8 decks26 decks
30%synergy
Solemn Simulacrum
27%inclusion7 decks26 decks
12%synergy
Nightmare Shepherd
27%inclusion7 decks26 decks
24%synergy
Athreos, Shroud-Veiled
27%inclusion7 decks26 decks
23%synergy
Gremlin Tamer
27%inclusion7 decks26 decks
26%synergy
Skullsnap Nuisance
27%inclusion7 decks26 decks
26%synergy
Grim Guardian
27%inclusion7 decks26 decks
24%synergy
Abdel Adrian, Gorion's Ward
27%inclusion7 decks26 decks
25%synergy
Zur the Enchanter
27%inclusion7 decks26 decks
22%synergy
Ancient Cellarspawn
23%inclusion6 decks26 decks
20%synergy
Zur, Eternal Schemer
23%inclusion6 decks26 decks
20%synergy
Silent Hallcreeper
23%inclusion6 decks26 decks
19%synergy
Archon of Sun's Grace
19%inclusion5 decks26 decks
15%synergy
Mindwrack Harpy
19%inclusion5 decks26 decks
19%synergy
Laboratory Maniac
19%inclusion5 decks26 decks
16%synergy
Heliod, the Radiant Dawn
19%inclusion5 decks26 decks
15%synergy
Hedron Crab
19%inclusion5 decks26 decks
19%synergy
Leonin Relic-Warder
19%inclusion5 decks26 decks
19%synergy
Overlord of the Balemurk
15%inclusion4 decks26 decks
13%synergy
Nashi, Searcher in the Dark
15%inclusion4 decks26 decks
15%synergy
Phenomenon Investigators
15%inclusion4 decks26 decks
15%synergy
Ghostly Pilferer
15%inclusion4 decks26 decks
8%synergy
Malevolent Hermit
15%inclusion4 decks26 decks
15%synergy
Burnished Hart
15%inclusion4 decks26 decks
12%synergy
Enduring Curiosity
15%inclusion4 decks26 decks
8%synergy
Auramancer
15%inclusion4 decks26 decks
12%synergy
Optimistic Scavenger
12%inclusion3 decks26 decks
11%synergy
Lotho, Corrupt Shirriff
12%inclusion3 decks26 decks
-5%synergy
Sage of Mysteries
12%inclusion3 decks26 decks
11%synergy
Creeping Peeper
12%inclusion3 decks26 decks
11%synergy
Metamorphosis Fanatic
12%inclusion3 decks26 decks
7%synergy
Hydroelectric Specimen
12%inclusion3 decks26 decks
9%synergy
Verge Rangers
12%inclusion3 decks26 decks
10%synergy
Lurrus of the Dream-Den
12%inclusion3 decks26 decks
10%synergy
Warehouse Tabby
12%inclusion3 decks26 decks
11%synergy
Ledger Shredder
12%inclusion3 decks26 decks
3%synergy
Spirit of the Labyrinth
7.7%inclusion2 decks26 decks
7%synergy
Protean Thaumaturge
7.7%inclusion2 decks26 decks
7%synergy
Fear of Lost Teeth
7.7%inclusion2 decks26 decks
8%synergy
Valley Floodcaller
7.7%inclusion2 decks26 decks
4%synergy
Ashiok's Reaper
7.7%inclusion2 decks26 decks
7%synergy
Underworld Coinsmith
7.7%inclusion2 decks26 decks
7%synergy
Starnheim Courser
7.7%inclusion2 decks26 decks
4%synergy
Fear of Isolation
7.7%inclusion2 decks26 decks
7%synergy
Overlord of the Mistmoors
7.7%inclusion2 decks26 decks
6%synergy
Instants
Arcane Denial
50%inclusion13 decks26 decks
30%synergy
Inkshield
42%inclusion11 decks26 decks
33%synergy
Thirst for Meaning
38%inclusion10 decks26 decks
37%synergy
Counterspell
35%inclusion9 decks26 decks
-7%synergy
Otherworldly Gaze
35%inclusion9 decks26 decks
32%synergy
Brainstorm
27%inclusion7 decks26 decks
10%synergy
Path to Exile
27%inclusion7 decks26 decks
-15%synergy
Utter End
27%inclusion7 decks26 decks
20%synergy
An Offer You Can't Refuse
19%inclusion5 decks26 decks
-8%synergy
Delay
19%inclusion5 decks26 decks
17%synergy
Negate
19%inclusion5 decks26 decks
3%synergy
Frantic Search
19%inclusion5 decks26 decks
2%synergy
Dovin's Veto
19%inclusion5 decks26 decks
-6%synergy
Return to Dust
19%inclusion5 decks26 decks
16%synergy
Muddle the Mixture
15%inclusion4 decks26 decks
11%synergy
Shred Memory
15%inclusion4 decks26 decks
15%synergy
Darkblast
15%inclusion4 decks26 decks
15%synergy
Lim-Dûl's Vault
15%inclusion4 decks26 decks
12%synergy
Mana Leak
15%inclusion4 decks26 decks
14%synergy
Telling Time
15%inclusion4 decks26 decks
13%synergy
Opt
12%inclusion3 decks26 decks
8%synergy
No More Lies
12%inclusion3 decks26 decks
10%synergy
Dark Ritual
12%inclusion3 decks26 decks
-8%synergy
Dispel
12%inclusion3 decks26 decks
8%synergy
Spell Pierce
12%inclusion3 decks26 decks
9%synergy
Retraction Helix
7.7%inclusion2 decks26 decks
7%synergy
Winds of Rebuke
7.7%inclusion2 decks26 decks
8%synergy
Banishing Knack
7.7%inclusion2 decks26 decks
7%synergy
Soul Partition
7.7%inclusion2 decks26 decks
7%synergy
Consider
7.7%inclusion2 decks26 decks
5%synergy
Disenchant
7.7%inclusion2 decks26 decks
6%synergy
Miscast
7.7%inclusion2 decks26 decks
6%synergy
Waterlogged Teachings
7.7%inclusion2 decks26 decks
3%synergy
Sorceries
Redress Fate
42%inclusion11 decks26 decks
36%synergy
Sevinne's Reclamation
38%inclusion10 decks26 decks
30%synergy
Time Wipe
31%inclusion8 decks26 decks
24%synergy
Lively Dirge
27%inclusion7 decks26 decks
26%synergy
Terminus
23%inclusion6 decks26 decks
19%synergy
Extinguish All Hope
23%inclusion6 decks26 decks
21%synergy
Read the Bones
19%inclusion5 decks26 decks
15%synergy
Unmarked Grave
19%inclusion5 decks26 decks
18%synergy
Demonic Counsel
19%inclusion5 decks26 decks
18%synergy
Diabolic Vision
15%inclusion4 decks26 decks
13%synergy
Portent
15%inclusion4 decks26 decks
12%synergy
Ponder
15%inclusion4 decks26 decks
6%synergy
Windfall
15%inclusion4 decks26 decks
2%synergy
Entreat the Angels
12%inclusion3 decks26 decks
10%synergy
Buried Alive
12%inclusion3 decks26 decks
7%synergy
Final Parting
12%inclusion3 decks26 decks
11%synergy
Dance of the Manse
12%inclusion3 decks26 decks
8%synergy
Unearth
7.7%inclusion2 decks26 decks
6%synergy
Whispering Madness
7.7%inclusion2 decks26 decks
6%synergy
Damn
7.7%inclusion2 decks26 decks
-13%synergy
Aminatou's Augury
7.7%inclusion2 decks26 decks
6%synergy
Commune with Evil
7.7%inclusion2 decks26 decks
8%synergy
Farewell
7.7%inclusion2 decks26 decks
-5%synergy
Ringsight
7.7%inclusion2 decks26 decks
6%synergy
Singularity Rupture
6.3%inclusion1 decks16 decks
4%synergy
Utility Artifacts
Wishclaw Talisman
19%inclusion5 decks26 decks
11%synergy
Keys to the House
15%inclusion4 decks26 decks
15%synergy
Cloud Key
12%inclusion3 decks26 decks
8%synergy
Brainstone
7.7%inclusion2 decks26 decks
6%synergy
Soul-Guide Lantern
7.7%inclusion2 decks26 decks
7%synergy
Enchantments
Monologue Tax
46%inclusion12 decks26 decks
40%synergy
Dress Down
46%inclusion12 decks26 decks
44%synergy
Animate Dead
42%inclusion11 decks26 decks
33%synergy
Ripples of Undeath
42%inclusion11 decks26 decks
40%synergy
Shark Typhoon
42%inclusion11 decks26 decks
36%synergy
Cramped Vents // Access Maze
38%inclusion10 decks26 decks
36%synergy
Bottomless Pool // Locker Room
38%inclusion10 decks26 decks
36%synergy
Seal of Cleansing
35%inclusion9 decks26 decks
33%synergy
One with the Multiverse
31%inclusion8 decks26 decks
26%synergy
The Eldest Reborn
31%inclusion8 decks26 decks
28%synergy
Grasp of Fate
27%inclusion7 decks26 decks
21%synergy
Amphibian Downpour
27%inclusion7 decks26 decks
22%synergy
Cast Out
27%inclusion7 decks26 decks
24%synergy
Defiled Crypt // Cadaver Lab
27%inclusion7 decks26 decks
26%synergy
Cemetery Tampering
27%inclusion7 decks26 decks
26%synergy
Propaganda
27%inclusion7 decks26 decks
0%synergy
Seal of Removal
23%inclusion6 decks26 decks
22%synergy
Founding the Third Path
23%inclusion6 decks26 decks
23%synergy
Necromancy
23%inclusion6 decks26 decks
18%synergy
Unable to Scream
23%inclusion6 decks26 decks
22%synergy
Estrid's Invocation
23%inclusion6 decks26 decks
18%synergy
Restricted Office // Lecture Hall
23%inclusion6 decks26 decks
21%synergy
Tinybones Joins Up
19%inclusion5 decks26 decks
18%synergy
Mystic Remora
19%inclusion5 decks26 decks
-2%synergy
Static Prison
19%inclusion5 decks26 decks
19%synergy
Sheltered by Ghosts
19%inclusion5 decks26 decks
17%synergy
Touch the Spirit Realm
19%inclusion5 decks26 decks
17%synergy
Blind Obedience
19%inclusion5 decks26 decks
7%synergy
Meat Locker // Drowned Diner
19%inclusion5 decks26 decks
19%synergy
Central Elevator // Promising Stairs
19%inclusion5 decks26 decks
19%synergy
Nowhere to Run
19%inclusion5 decks26 decks
18%synergy
Ethereal Armor
19%inclusion5 decks26 decks
15%synergy
Cacophony Unleashed
19%inclusion5 decks26 decks
18%synergy
Witness Protection
19%inclusion5 decks26 decks
17%synergy
Mirror Room // Fractured Realm
19%inclusion5 decks26 decks
17%synergy
Aura of Silence
15%inclusion4 decks26 decks
12%synergy
Polluted Cistern // Dim Oubliette
15%inclusion4 decks26 decks
15%synergy
Hallowed Haunting
15%inclusion4 decks26 decks
13%synergy
Derelict Attic // Widow's Walk
15%inclusion4 decks26 decks
15%synergy
Secrets of the Dead
15%inclusion4 decks26 decks
15%synergy
Ghostly Prison
15%inclusion4 decks26 decks
-7%synergy
Stillness in Motion
14%inclusion3 decks21 decks
14%synergy
Honest Work
13%inclusion1 decks8 decks
12%synergy
Spirit-Sister's Call
12%inclusion3 decks26 decks
10%synergy
Screams from Within
12%inclusion3 decks26 decks
11%synergy
All That Glitters
12%inclusion3 decks26 decks
3%synergy
Unholy Annex // Ritual Chamber
12%inclusion3 decks26 decks
11%synergy
Soul Snare
12%inclusion3 decks26 decks
11%synergy
Curator's Ward
12%inclusion3 decks26 decks
9%synergy
Dazzling Theater // Prop Room
12%inclusion3 decks26 decks
10%synergy
Utility Lands
Hall of Heliod's Generosity
58%inclusion15 decks26 decks
45%synergy
Bojuka Bog
54%inclusion14 decks26 decks
27%synergy
Halimar Depths
35%inclusion9 decks26 decks
30%synergy
Cephalid Coliseum
19%inclusion5 decks26 decks
16%synergy
Reliquary Tower
7.7%inclusion2 decks26 decks
-26%synergy
Mana Artifacts
Sol Ring
88%inclusion23 decks26 decks
-1%synergy
Arcane Signet
88%inclusion23 decks26 decks
1%synergy
Azorius Signet
62%inclusion16 decks26 decks
30%synergy
Orzhov Signet
58%inclusion15 decks26 decks
24%synergy
Commander's Sphere
38%inclusion10 decks26 decks
20%synergy
Mind Stone
38%inclusion10 decks26 decks
26%synergy
Fellwar Stone
35%inclusion9 decks26 decks
1%synergy
Talisman of Progress
27%inclusion7 decks26 decks
-16%synergy
Talisman of Dominance
27%inclusion7 decks26 decks
-23%synergy
Dimir Signet
27%inclusion7 decks26 decks
-5%synergy
Talisman of Hierarchy
27%inclusion7 decks26 decks
-17%synergy
Lands
Plains
100%inclusion26 decks26 decks
8%synergy
Swamp
100%inclusion26 decks26 decks
9%synergy
Island
96%inclusion25 decks26 decks
3%synergy
Command Tower
88%inclusion23 decks26 decks
-4%synergy
Underground River
81%inclusion21 decks26 decks
47%synergy
Caves of Koilos
77%inclusion20 decks26 decks
41%synergy
Adarkar Wastes
77%inclusion20 decks26 decks
46%synergy
Orzhov Basilica
69%inclusion18 decks26 decks
54%synergy
Temple of Silence
69%inclusion18 decks26 decks
50%synergy
Terramorphic Expanse
65%inclusion17 decks26 decks
49%synergy
Temple of Deceit
65%inclusion17 decks26 decks
48%synergy
Arcane Sanctum
65%inclusion17 decks26 decks
11%synergy
Obscura Storefront
65%inclusion17 decks26 decks
55%synergy
Azorius Chancery
65%inclusion17 decks26 decks
51%synergy
Temple of Enlightenment
62%inclusion16 decks26 decks
45%synergy
Tainted Field
62%inclusion16 decks26 decks
55%synergy
Evolving Wilds
58%inclusion15 decks26 decks
33%synergy
Tainted Isle
58%inclusion15 decks26 decks
51%synergy
Dimir Aqueduct
58%inclusion15 decks26 decks
44%synergy
Ash Barrens
42%inclusion11 decks26 decks
32%synergy
Exotic Orchard
38%inclusion10 decks26 decks
-20%synergy
Glacial Fortress
35%inclusion9 decks26 decks
-6%synergy
Thriving Isle
35%inclusion9 decks26 decks
30%synergy
Thriving Moor
35%inclusion9 decks26 decks
30%synergy
Thriving Heath
35%inclusion9 decks26 decks
30%synergy
Sunken Hollow
27%inclusion7 decks26 decks
-13%synergy
Isolated Chapel
27%inclusion7 decks26 decks
-13%synergy
Prairie Stream
27%inclusion7 decks26 decks
-14%synergy
River of Tears
23%inclusion6 decks26 decks
21%synergy
Skycloud Expanse
23%inclusion6 decks26 decks
8%synergy
Darkwater Catacombs
19%inclusion5 decks26 decks
5%synergy
Drowned Catacomb
19%inclusion5 decks26 decks
-17%synergy
Contaminated Landscape
15%inclusion4 decks26 decks
1%synergy
Spire of Industry
12%inclusion3 decks26 decks
3%synergy
Hydroelectric Specimen
12%inclusion3 decks26 decks
9%synergy
Raffine's Tower
7.7%inclusion2 decks26 decks
-33%synergy
Promising Vein
7.7%inclusion2 decks26 decks
7%synergy
Floodfarm Verge
7.7%inclusion2 decks26 decks
-3%synergy
Myriad Landscape
7.7%inclusion2 decks26 decks
-1%synergy
Fetid Heath
7.7%inclusion2 decks26 decks
-4%synergy
Shineshadow Snarl
7.7%inclusion2 decks26 decks
-3%synergy
Choked Estuary
7.7%inclusion2 decks26 decks
-9%synergy
Waterlogged Teachings
7.7%inclusion2 decks26 decks
3%synergy
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