The Master of Keys (Commander) - Budget Optimized

The Master of Keys
Rank #306
25decks
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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
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Sorceries
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Enchantments
Utility Lands
Mana Artifacts
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Mesa Enchantress
80%inclusion20 decks25 decks
71%synergy
Secret Arcade // Dusty Parlor
72%inclusion18 decks25 decks
67%synergy
Ondu Spiritdancer
72%inclusion18 decks25 decks
66%synergy
Starfield Mystic
72%inclusion18 decks25 decks
65%synergy
Scrabbling Skullcrab
64%inclusion16 decks25 decks
63%synergy
Mirrormade
72%inclusion18 decks25 decks
62%synergy
Demon of Fate's Design
64%inclusion16 decks25 decks
59%synergy
Inquisitive Glimmer
64%inclusion16 decks25 decks
56%synergy
Gravebreaker Lamia
56%inclusion14 decks25 decks
55%synergy
Doomwake Giant
56%inclusion14 decks25 decks
50%synergy
Top Cards
Swords to Plowshares
72%inclusion18 decks25 decks
4%synergy
Sigil of the Empty Throne
52%inclusion13 decks25 decks
46%synergy
Extravagant Replication
52%inclusion13 decks25 decks
47%synergy
Sphere of Safety
52%inclusion13 decks25 decks
43%synergy
Entity Tracker
52%inclusion13 decks25 decks
46%synergy
Arcane Denial
48%inclusion12 decks25 decks
28%synergy
Fear of Impostors
48%inclusion12 decks25 decks
47%synergy
Fear of Sleep Paralysis
48%inclusion12 decks25 decks
43%synergy
Archetype of Imagination
48%inclusion12 decks25 decks
43%synergy
Moon-Blessed Cleric
48%inclusion12 decks25 decks
43%synergy
Game Changers
Gifts Ungiven
20%inclusion5 decks25 decks
18%synergy
Notion Thief
16%inclusion4 decks25 decks
9%synergy
Creatures
Victor, Valgavoth's Seneschal
40%inclusion10 decks25 decks
38%synergy
Ghostly Dancers
40%inclusion10 decks25 decks
37%synergy
Soaring Lightbringer
40%inclusion10 decks25 decks
35%synergy
Overlord of the Floodpits
36%inclusion9 decks25 decks
32%synergy
Aminatou, Veil Piercer
36%inclusion9 decks25 decks
35%synergy
Balemurk Leech
32%inclusion8 decks25 decks
31%synergy
Abdel Adrian, Gorion's Ward
28%inclusion7 decks25 decks
26%synergy
Nightmare Shepherd
28%inclusion7 decks25 decks
26%synergy
Grim Guardian
28%inclusion7 decks25 decks
25%synergy
Solemn Simulacrum
28%inclusion7 decks25 decks
13%synergy
Gremlin Tamer
28%inclusion7 decks25 decks
27%synergy
Silent Hallcreeper
24%inclusion6 decks25 decks
20%synergy
Zur the Enchanter
24%inclusion6 decks25 decks
19%synergy
Skullsnap Nuisance
24%inclusion6 decks25 decks
24%synergy
Zur, Eternal Schemer
24%inclusion6 decks25 decks
21%synergy
Athreos, Shroud-Veiled
24%inclusion6 decks25 decks
20%synergy
Ancient Cellarspawn
24%inclusion6 decks25 decks
21%synergy
Leonin Relic-Warder
20%inclusion5 decks25 decks
20%synergy
Laboratory Maniac
20%inclusion5 decks25 decks
17%synergy
Mindwrack Harpy
20%inclusion5 decks25 decks
20%synergy
Hedron Crab
20%inclusion5 decks25 decks
19%synergy
Heliod, the Radiant Dawn
20%inclusion5 decks25 decks
16%synergy
Overlord of the Balemurk
16%inclusion4 decks25 decks
14%synergy
Enduring Curiosity
16%inclusion4 decks25 decks
8%synergy
Phenomenon Investigators
16%inclusion4 decks25 decks
15%synergy
Ghostly Pilferer
16%inclusion4 decks25 decks
9%synergy
Archon of Sun's Grace
16%inclusion4 decks25 decks
11%synergy
Burnished Hart
16%inclusion4 decks25 decks
13%synergy
Auramancer
16%inclusion4 decks25 decks
13%synergy
Malevolent Hermit
16%inclusion4 decks25 decks
15%synergy
Nashi, Searcher in the Dark
16%inclusion4 decks25 decks
16%synergy
Metamorphosis Fanatic
12%inclusion3 decks25 decks
7%synergy
Optimistic Scavenger
12%inclusion3 decks25 decks
12%synergy
Lotho, Corrupt Shirriff
12%inclusion3 decks25 decks
-5%synergy
Sage of Mysteries
12%inclusion3 decks25 decks
12%synergy
Warehouse Tabby
12%inclusion3 decks25 decks
12%synergy
Creeping Peeper
12%inclusion3 decks25 decks
12%synergy
Ledger Shredder
12%inclusion3 decks25 decks
3%synergy
Lurrus of the Dream-Den
12%inclusion3 decks25 decks
10%synergy
Hydroelectric Specimen
12%inclusion3 decks25 decks
9%synergy
Verge Rangers
12%inclusion3 decks25 decks
11%synergy
Starnheim Courser
8.0%inclusion2 decks25 decks
4%synergy
Overlord of the Mistmoors
8.0%inclusion2 decks25 decks
6%synergy
Spirited Companion
8.0%inclusion2 decks25 decks
6%synergy
Appendage Amalgam
8.0%inclusion2 decks25 decks
8%synergy
Underworld Coinsmith
8.0%inclusion2 decks25 decks
7%synergy
Ketramose, the New Dawn
8.0%inclusion2 decks25 decks
8%synergy
Fear of Isolation
8.0%inclusion2 decks25 decks
8%synergy
Protean Thaumaturge
8.0%inclusion2 decks25 decks
7%synergy
Valley Floodcaller
8.0%inclusion2 decks25 decks
4%synergy
Instants
Inkshield
44%inclusion11 decks25 decks
35%synergy
Thirst for Meaning
36%inclusion9 decks25 decks
34%synergy
Otherworldly Gaze
32%inclusion8 decks25 decks
30%synergy
Counterspell
32%inclusion8 decks25 decks
-9%synergy
Brainstorm
28%inclusion7 decks25 decks
11%synergy
Utter End
28%inclusion7 decks25 decks
21%synergy
Path to Exile
24%inclusion6 decks25 decks
-18%synergy
Frantic Search
20%inclusion5 decks25 decks
3%synergy
An Offer You Can't Refuse
20%inclusion5 decks25 decks
-7%synergy
Return to Dust
20%inclusion5 decks25 decks
16%synergy
Delay
20%inclusion5 decks25 decks
18%synergy
Dovin's Veto
20%inclusion5 decks25 decks
-5%synergy
Telling Time
16%inclusion4 decks25 decks
14%synergy
Lim-Dûl's Vault
16%inclusion4 decks25 decks
13%synergy
Negate
16%inclusion4 decks25 decks
0%synergy
Darkblast
16%inclusion4 decks25 decks
16%synergy
Muddle the Mixture
16%inclusion4 decks25 decks
12%synergy
Shred Memory
16%inclusion4 decks25 decks
16%synergy
Mana Leak
16%inclusion4 decks25 decks
14%synergy
Dark Ritual
12%inclusion3 decks25 decks
-7%synergy
Dispel
12%inclusion3 decks25 decks
8%synergy
Opt
12%inclusion3 decks25 decks
8%synergy
Spell Pierce
12%inclusion3 decks25 decks
9%synergy
No More Lies
12%inclusion3 decks25 decks
11%synergy
Retraction Helix
8.0%inclusion2 decks25 decks
7%synergy
Disenchant
8.0%inclusion2 decks25 decks
6%synergy
Soul Partition
8.0%inclusion2 decks25 decks
8%synergy
Winds of Rebuke
8.0%inclusion2 decks25 decks
8%synergy
Consider
8.0%inclusion2 decks25 decks
6%synergy
Banishing Knack
8.0%inclusion2 decks25 decks
8%synergy
Miscast
8.0%inclusion2 decks25 decks
7%synergy
Waterlogged Teachings
8.0%inclusion2 decks25 decks
3%synergy
Sorceries
Redress Fate
40%inclusion10 decks25 decks
34%synergy
Sevinne's Reclamation
36%inclusion9 decks25 decks
27%synergy
Time Wipe
28%inclusion7 decks25 decks
21%synergy
Lively Dirge
28%inclusion7 decks25 decks
27%synergy
Terminus
24%inclusion6 decks25 decks
20%synergy
Unmarked Grave
20%inclusion5 decks25 decks
19%synergy
Read the Bones
20%inclusion5 decks25 decks
16%synergy
Demonic Counsel
20%inclusion5 decks25 decks
19%synergy
Extinguish All Hope
20%inclusion5 decks25 decks
18%synergy
Ponder
16%inclusion4 decks25 decks
7%synergy
Portent
16%inclusion4 decks25 decks
13%synergy
Windfall
16%inclusion4 decks25 decks
2%synergy
Diabolic Vision
16%inclusion4 decks25 decks
14%synergy
Buried Alive
12%inclusion3 decks25 decks
8%synergy
Final Parting
12%inclusion3 decks25 decks
11%synergy
Entreat the Angels
12%inclusion3 decks25 decks
10%synergy
Farewell
8.0%inclusion2 decks25 decks
-5%synergy
Whispering Madness
8.0%inclusion2 decks25 decks
6%synergy
Unearth
8.0%inclusion2 decks25 decks
6%synergy
Commune with Evil
8.0%inclusion2 decks25 decks
8%synergy
Ringsight
8.0%inclusion2 decks25 decks
7%synergy
Damn
8.0%inclusion2 decks25 decks
-12%synergy
Aminatou's Augury
8.0%inclusion2 decks25 decks
7%synergy
Dance of the Manse
8.0%inclusion2 decks25 decks
4%synergy
Singularity Rupture
6.7%inclusion1 decks15 decks
4%synergy
Utility Artifacts
Wishclaw Talisman
20%inclusion5 decks25 decks
12%synergy
Keys to the House
16%inclusion4 decks25 decks
16%synergy
Cloud Key
12%inclusion3 decks25 decks
9%synergy
Soul-Guide Lantern
8.0%inclusion2 decks25 decks
7%synergy
Brainstone
8.0%inclusion2 decks25 decks
7%synergy
Enchantments
Timely Ward
48%inclusion12 decks25 decks
43%synergy
Monologue Tax
44%inclusion11 decks25 decks
38%synergy
Animate Dead
44%inclusion11 decks25 decks
34%synergy
Dress Down
44%inclusion11 decks25 decks
42%synergy
Shark Typhoon
40%inclusion10 decks25 decks
34%synergy
Ripples of Undeath
40%inclusion10 decks25 decks
37%synergy
Cramped Vents // Access Maze
36%inclusion9 decks25 decks
33%synergy
Bottomless Pool // Locker Room
36%inclusion9 decks25 decks
34%synergy
One with the Multiverse
32%inclusion8 decks25 decks
27%synergy
Seal of Cleansing
32%inclusion8 decks25 decks
31%synergy
The Eldest Reborn
28%inclusion7 decks25 decks
26%synergy
Amphibian Downpour
28%inclusion7 decks25 decks
23%synergy
Cast Out
28%inclusion7 decks25 decks
25%synergy
Founding the Third Path
24%inclusion6 decks25 decks
24%synergy
Propaganda
24%inclusion6 decks25 decks
-3%synergy
Seal of Removal
24%inclusion6 decks25 decks
23%synergy
Grasp of Fate
24%inclusion6 decks25 decks
18%synergy
Necromancy
24%inclusion6 decks25 decks
19%synergy
Estrid's Invocation
24%inclusion6 decks25 decks
19%synergy
Cemetery Tampering
24%inclusion6 decks25 decks
23%synergy
Defiled Crypt // Cadaver Lab
24%inclusion6 decks25 decks
23%synergy
Unable to Scream
24%inclusion6 decks25 decks
23%synergy
Touch the Spirit Realm
20%inclusion5 decks25 decks
18%synergy
Mystic Remora
20%inclusion5 decks25 decks
-1%synergy
Static Prison
20%inclusion5 decks25 decks
20%synergy
Restricted Office // Lecture Hall
20%inclusion5 decks25 decks
18%synergy
Tinybones Joins Up
20%inclusion5 decks25 decks
19%synergy
Blind Obedience
20%inclusion5 decks25 decks
8%synergy
Cacophony Unleashed
20%inclusion5 decks25 decks
18%synergy
Meat Locker // Drowned Diner
20%inclusion5 decks25 decks
19%synergy
Witness Protection
20%inclusion5 decks25 decks
18%synergy
Sheltered by Ghosts
20%inclusion5 decks25 decks
17%synergy
Nowhere to Run
20%inclusion5 decks25 decks
19%synergy
Mirror Room // Fractured Realm
20%inclusion5 decks25 decks
18%synergy
Secrets of the Dead
16%inclusion4 decks25 decks
16%synergy
Polluted Cistern // Dim Oubliette
16%inclusion4 decks25 decks
15%synergy
Ethereal Armor
16%inclusion4 decks25 decks
11%synergy
Hallowed Haunting
16%inclusion4 decks25 decks
14%synergy
Derelict Attic // Widow's Walk
16%inclusion4 decks25 decks
16%synergy
Central Elevator // Promising Stairs
16%inclusion4 decks25 decks
15%synergy
Aura of Silence
16%inclusion4 decks25 decks
13%synergy
Ghostly Prison
16%inclusion4 decks25 decks
-6%synergy
Stillness in Motion
15%inclusion3 decks20 decks
15%synergy
Honest Work
14%inclusion1 decks7 decks
14%synergy
Trapped in the Screen
12%inclusion3 decks25 decks
11%synergy
Surgical Suite // Hospital Room
12%inclusion3 decks25 decks
12%synergy
Enchanted Evening
12%inclusion3 decks25 decks
10%synergy
Phyrexian Arena
12%inclusion3 decks25 decks
-2%synergy
Soul Snare
12%inclusion3 decks25 decks
12%synergy
Spirit-Sister's Call
12%inclusion3 decks25 decks
11%synergy
Utility Lands
Hall of Heliod's Generosity
60%inclusion15 decks25 decks
47%synergy
Bojuka Bog
52%inclusion13 decks25 decks
25%synergy
Halimar Depths
36%inclusion9 decks25 decks
31%synergy
Cephalid Coliseum
20%inclusion5 decks25 decks
16%synergy
Reliquary Tower
8.0%inclusion2 decks25 decks
-26%synergy
Mistrise Village
5.0%inclusion1 decks20 decks
1%synergy
Mana Artifacts
Sol Ring
88%inclusion22 decks25 decks
-2%synergy
Arcane Signet
88%inclusion22 decks25 decks
0%synergy
Azorius Signet
60%inclusion15 decks25 decks
28%synergy
Orzhov Signet
56%inclusion14 decks25 decks
22%synergy
Commander's Sphere
36%inclusion9 decks25 decks
17%synergy
Fellwar Stone
36%inclusion9 decks25 decks
2%synergy
Mind Stone
36%inclusion9 decks25 decks
23%synergy
Talisman of Progress
28%inclusion7 decks25 decks
-15%synergy
Talisman of Dominance
28%inclusion7 decks25 decks
-21%synergy
Talisman of Hierarchy
28%inclusion7 decks25 decks
-16%synergy
Dimir Signet
24%inclusion6 decks25 decks
-8%synergy
Lands
Swamp
100%inclusion25 decks25 decks
9%synergy
Plains
100%inclusion25 decks25 decks
8%synergy
Island
96%inclusion24 decks25 decks
3%synergy
Command Tower
88%inclusion22 decks25 decks
-5%synergy
Underground River
80%inclusion20 decks25 decks
47%synergy
Adarkar Wastes
76%inclusion19 decks25 decks
45%synergy
Caves of Koilos
76%inclusion19 decks25 decks
41%synergy
Orzhov Basilica
68%inclusion17 decks25 decks
52%synergy
Temple of Silence
68%inclusion17 decks25 decks
49%synergy
Terramorphic Expanse
64%inclusion16 decks25 decks
47%synergy
Temple of Deceit
64%inclusion16 decks25 decks
46%synergy
Azorius Chancery
64%inclusion16 decks25 decks
50%synergy
Obscura Storefront
64%inclusion16 decks25 decks
54%synergy
Arcane Sanctum
64%inclusion16 decks25 decks
9%synergy
Tainted Field
60%inclusion15 decks25 decks
53%synergy
Temple of Enlightenment
60%inclusion15 decks25 decks
43%synergy
Tainted Isle
60%inclusion15 decks25 decks
54%synergy
Dimir Aqueduct
56%inclusion14 decks25 decks
42%synergy
Evolving Wilds
56%inclusion14 decks25 decks
31%synergy
Ash Barrens
44%inclusion11 decks25 decks
33%synergy
Thriving Moor
36%inclusion9 decks25 decks
32%synergy
Glacial Fortress
36%inclusion9 decks25 decks
-5%synergy
Exotic Orchard
36%inclusion9 decks25 decks
-23%synergy
Thriving Isle
36%inclusion9 decks25 decks
32%synergy
Thriving Heath
36%inclusion9 decks25 decks
32%synergy
Prairie Stream
28%inclusion7 decks25 decks
-13%synergy
Isolated Chapel
28%inclusion7 decks25 decks
-11%synergy
Sunken Hollow
28%inclusion7 decks25 decks
-12%synergy
Skycloud Expanse
24%inclusion6 decks25 decks
9%synergy
River of Tears
24%inclusion6 decks25 decks
22%synergy
Darkwater Catacombs
20%inclusion5 decks25 decks
5%synergy
Drowned Catacomb
20%inclusion5 decks25 decks
-16%synergy
Contaminated Landscape
16%inclusion4 decks25 decks
2%synergy
Spire of Industry
12%inclusion3 decks25 decks
4%synergy
Hydroelectric Specimen
12%inclusion3 decks25 decks
9%synergy
Myriad Landscape
8.0%inclusion2 decks25 decks
-1%synergy
Fetid Heath
8.0%inclusion2 decks25 decks
-4%synergy
Raffine's Tower
8.0%inclusion2 decks25 decks
-33%synergy
Promising Vein
8.0%inclusion2 decks25 decks
8%synergy
Shineshadow Snarl
8.0%inclusion2 decks25 decks
-3%synergy
Choked Estuary
8.0%inclusion2 decks25 decks
-8%synergy
Waterlogged Teachings
8.0%inclusion2 decks25 decks
3%synergy
Floodfarm Verge
8.0%inclusion2 decks25 decks
-3%synergy
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