The Master of Keys (Commander) - Budget Optimized Combo

The Master of Keys
Rank #316
3decks
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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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Archidekt
Commander Spellbook
Moxfield
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Creatures
Instants
Sorceries
Utility Artifacts
Enchantments
Planeswalkers
Utility Lands
Mana Artifacts
Lands
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Gifts Ungiven
33%inclusion1 decks3 decks
31%synergy
Notion Thief
33%inclusion1 decks3 decks
26%synergy
Creatures
Scrabbling Skullcrab
100%inclusion3 decks3 decks
99%synergy
Leonin Relic-Warder
100%inclusion3 decks3 decks
100%synergy
Laboratory Maniac
100%inclusion3 decks3 decks
97%synergy
Entity Tracker
100%inclusion3 decks3 decks
93%synergy
Lotho, Corrupt Shirriff
67%inclusion2 decks3 decks
50%synergy
Gravebreaker Lamia
67%inclusion2 decks3 decks
66%synergy
Gremlin Tamer
67%inclusion2 decks3 decks
66%synergy
Abdel Adrian, Gorion's Ward
67%inclusion2 decks3 decks
65%synergy
Starnheim Courser
33%inclusion1 decks3 decks
29%synergy
Witch Enchanter
33%inclusion1 decks3 decks
26%synergy
Displacer Kitten
33%inclusion1 decks3 decks
26%synergy
Protean Thaumaturge
33%inclusion1 decks3 decks
33%synergy
Hoarding Broodlord
33%inclusion1 decks3 decks
31%synergy
Starfield Mystic
33%inclusion1 decks3 decks
27%synergy
Overlord of the Floodpits
33%inclusion1 decks3 decks
30%synergy
Phyrexian Metamorph
33%inclusion1 decks3 decks
25%synergy
Valley Floodcaller
33%inclusion1 decks3 decks
29%synergy
Archon of Sun's Grace
33%inclusion1 decks3 decks
29%synergy
Doom Whisperer
33%inclusion1 decks3 decks
32%synergy
Inquisitive Glimmer
33%inclusion1 decks3 decks
26%synergy
Mirrorhall Mimic
33%inclusion1 decks3 decks
33%synergy
Demon of Fate's Design
33%inclusion1 decks3 decks
28%synergy
Hydroelectric Specimen
33%inclusion1 decks3 decks
31%synergy
Sage of Mysteries
33%inclusion1 decks3 decks
33%synergy
Soaring Lightbringer
33%inclusion1 decks3 decks
28%synergy
Ashiok's Reaper
33%inclusion1 decks3 decks
33%synergy
Hedron Crab
33%inclusion1 decks3 decks
33%synergy
Shadow Kin
33%inclusion1 decks3 decks
33%synergy
Stitcher's Supplier
33%inclusion1 decks3 decks
33%synergy
Mesa Enchantress
33%inclusion1 decks3 decks
24%synergy
Victor, Valgavoth's Seneschal
33%inclusion1 decks3 decks
31%synergy
Ajani's Chosen
33%inclusion1 decks3 decks
33%synergy
Enduring Curiosity
33%inclusion1 decks3 decks
26%synergy
Appendage Amalgam
33%inclusion1 decks3 decks
33%synergy
Balemurk Leech
33%inclusion1 decks3 decks
33%synergy
Warehouse Tabby
33%inclusion1 decks3 decks
33%synergy
Phantasmal Image
33%inclusion1 decks3 decks
31%synergy
Grim Guardian
33%inclusion1 decks3 decks
31%synergy
Ghostly Dancers
33%inclusion1 decks3 decks
31%synergy
Mangara, the Diplomat
33%inclusion1 decks3 decks
32%synergy
Zur, Eternal Schemer
33%inclusion1 decks3 decks
30%synergy
Timestream Navigator
33%inclusion1 decks3 decks
33%synergy
Ondu Spiritdancer
33%inclusion1 decks3 decks
27%synergy
Burning-Rune Demon
33%inclusion1 decks3 decks
33%synergy
Stinkweed Imp
33%inclusion1 decks3 decks
33%synergy
Blood Pet
33%inclusion1 decks3 decks
33%synergy
Psychic Frog
33%inclusion1 decks3 decks
27%synergy
Popular Egotist
33%inclusion1 decks3 decks
33%synergy
Ledger Shredder
33%inclusion1 decks3 decks
24%synergy
Mindwrack Harpy
33%inclusion1 decks3 decks
33%synergy
Instants
Dark Ritual
100%inclusion3 decks3 decks
81%synergy
An Offer You Can't Refuse
67%inclusion2 decks3 decks
40%synergy
Negate
67%inclusion2 decks3 decks
50%synergy
Swords to Plowshares
67%inclusion2 decks3 decks
-2%synergy
Mana Leak
67%inclusion2 decks3 decks
65%synergy
Counterspell
67%inclusion2 decks3 decks
25%synergy
Path to Exile
67%inclusion2 decks3 decks
25%synergy
Sacrifice
33%inclusion1 decks3 decks
33%synergy
Muddle the Mixture
33%inclusion1 decks3 decks
29%synergy
Shred Memory
33%inclusion1 decks3 decks
33%synergy
Dovin's Veto
33%inclusion1 decks3 decks
9%synergy
Retraction Helix
33%inclusion1 decks3 decks
33%synergy
Songs of the Damned
33%inclusion1 decks3 decks
33%synergy
Lim-Dûl's Vault
33%inclusion1 decks3 decks
30%synergy
Razorgrass Ambush
33%inclusion1 decks3 decks
32%synergy
Culling the Weak
33%inclusion1 decks3 decks
32%synergy
Darkblast
33%inclusion1 decks3 decks
33%synergy
Winds of Rebuke
33%inclusion1 decks3 decks
33%synergy
Dispel
33%inclusion1 decks3 decks
30%synergy
Banishing Knack
33%inclusion1 decks3 decks
33%synergy
Opt
33%inclusion1 decks3 decks
29%synergy
Perplex
33%inclusion1 decks3 decks
32%synergy
Jwari Disruption
33%inclusion1 decks3 decks
33%synergy
Delay
33%inclusion1 decks3 decks
31%synergy
Wash Away
33%inclusion1 decks3 decks
32%synergy
Disenchant
33%inclusion1 decks3 decks
32%synergy
Arcane Denial
33%inclusion1 decks3 decks
13%synergy
Get Out
33%inclusion1 decks3 decks
33%synergy
Sink into Stupor
33%inclusion1 decks3 decks
21%synergy
Spell Pierce
33%inclusion1 decks3 decks
31%synergy
Miscast
33%inclusion1 decks3 decks
32%synergy
Waterlogged Teachings
33%inclusion1 decks3 decks
29%synergy
Sorceries
Windfall
67%inclusion2 decks3 decks
53%synergy
Lively Dirge
33%inclusion1 decks3 decks
32%synergy
Unmarked Grave
33%inclusion1 decks3 decks
32%synergy
Sevinne's Reclamation
33%inclusion1 decks3 decks
24%synergy
Dread Return
33%inclusion1 decks3 decks
31%synergy
Feed the Swarm
33%inclusion1 decks3 decks
30%synergy
Demonic Counsel
33%inclusion1 decks3 decks
32%synergy
Final Parting
33%inclusion1 decks3 decks
33%synergy
Toxic Deluge
33%inclusion1 decks3 decks
14%synergy
Damn
33%inclusion1 decks3 decks
13%synergy
Utility Artifacts
Wishclaw Talisman
67%inclusion2 decks3 decks
58%synergy
Mirage Mirror
33%inclusion1 decks3 decks
32%synergy
Helm of Awakening
33%inclusion1 decks3 decks
33%synergy
Enchantments
Court of Cunning
67%inclusion2 decks3 decks
66%synergy
Ripples of Undeath
67%inclusion2 decks3 decks
64%synergy
Tinybones Joins Up
67%inclusion2 decks3 decks
65%synergy
Touch the Spirit Realm
67%inclusion2 decks3 decks
64%synergy
Necromancy
67%inclusion2 decks3 decks
62%synergy
Mystic Remora
67%inclusion2 decks3 decks
45%synergy
Amphibian Downpour
67%inclusion2 decks3 decks
62%synergy
Static Prison
67%inclusion2 decks3 decks
66%synergy
Animate Dead
67%inclusion2 decks3 decks
57%synergy
Dress Down
67%inclusion2 decks3 decks
64%synergy
Roiling Dragonstorm
50%inclusion1 decks2 decks
50%synergy
Stillness in Motion
50%inclusion1 decks2 decks
50%synergy
Endless Evil
33%inclusion1 decks3 decks
33%synergy
Founding the Third Path
33%inclusion1 decks3 decks
33%synergy
Hesitation
33%inclusion1 decks3 decks
33%synergy
Cacophony Unleashed
33%inclusion1 decks3 decks
32%synergy
Extravagant Replication
33%inclusion1 decks3 decks
28%synergy
Out of the Tombs
33%inclusion1 decks3 decks
33%synergy
Font of Fortunes
33%inclusion1 decks3 decks
33%synergy
Curse of the Bloody Tome
33%inclusion1 decks3 decks
33%synergy
Authority of the Consuls
33%inclusion1 decks3 decks
22%synergy
Blind Obedience
33%inclusion1 decks3 decks
21%synergy
Hopeless Nightmare
33%inclusion1 decks3 decks
33%synergy
Thought Reflection
33%inclusion1 decks3 decks
33%synergy
Followed Footsteps
33%inclusion1 decks3 decks
32%synergy
Mirrormade
33%inclusion1 decks3 decks
24%synergy
Estrid's Invocation
33%inclusion1 decks3 decks
29%synergy
Timely Ward
33%inclusion1 decks3 decks
28%synergy
March of the Canonized
33%inclusion1 decks3 decks
33%synergy
Screams from Within
33%inclusion1 decks3 decks
33%synergy
Seal of Cleansing
33%inclusion1 decks3 decks
32%synergy
Enchanted Evening
33%inclusion1 decks3 decks
32%synergy
Ever-Watching Threshold
33%inclusion1 decks3 decks
33%synergy
Chthonian Nightmare
33%inclusion1 decks3 decks
33%synergy
Secret Arcade // Dusty Parlor
33%inclusion1 decks3 decks
28%synergy
Nowhere to Run
33%inclusion1 decks3 decks
32%synergy
Hallowed Haunting
33%inclusion1 decks3 decks
31%synergy
Into the Pit
33%inclusion1 decks3 decks
33%synergy
Dollmaker's Shop // Porcelain Gallery
33%inclusion1 decks3 decks
32%synergy
Ghostly Prison
33%inclusion1 decks3 decks
12%synergy
Phyrexian Arena
33%inclusion1 decks3 decks
19%synergy
Seal of Removal
33%inclusion1 decks3 decks
33%synergy
Leyline of the Void
33%inclusion1 decks3 decks
32%synergy
Tortured Existence
33%inclusion1 decks3 decks
27%synergy
Planeswalkers
Teferi, Time Raveler
33%inclusion1 decks3 decks
25%synergy
Utility Lands
Cephalid Coliseum
67%inclusion2 decks3 decks
63%synergy
Emergence Zone
33%inclusion1 decks3 decks
31%synergy
Mana Artifacts
Arcane Signet
100%inclusion3 decks3 decks
12%synergy
Sol Ring
100%inclusion3 decks3 decks
10%synergy
Talisman of Progress
67%inclusion2 decks3 decks
24%synergy
Talisman of Dominance
67%inclusion2 decks3 decks
18%synergy
Fellwar Stone
67%inclusion2 decks3 decks
33%synergy
Talisman of Hierarchy
67%inclusion2 decks3 decks
24%synergy
Commander's Sphere
33%inclusion1 decks3 decks
14%synergy
Machine God's Effigy
33%inclusion1 decks3 decks
32%synergy
Dimir Signet
33%inclusion1 decks3 decks
1%synergy
Mind Stone
33%inclusion1 decks3 decks
20%synergy
Orzhov Signet
33%inclusion1 decks3 decks
-1%synergy
Azorius Signet
33%inclusion1 decks3 decks
1%synergy
Lands
Swamp
100%inclusion3 decks3 decks
9%synergy
Island
100%inclusion3 decks3 decks
7%synergy
Plains
100%inclusion3 decks3 decks
9%synergy
Glacial Fortress
67%inclusion2 decks3 decks
27%synergy
Command Tower
67%inclusion2 decks3 decks
-26%synergy
Terramorphic Expanse
67%inclusion2 decks3 decks
50%synergy
Exotic Orchard
67%inclusion2 decks3 decks
8%synergy
Caves of Koilos
67%inclusion2 decks3 decks
31%synergy
Prairie Stream
67%inclusion2 decks3 decks
26%synergy
Isolated Chapel
67%inclusion2 decks3 decks
28%synergy
Drowned Catacomb
67%inclusion2 decks3 decks
31%synergy
Underground River
67%inclusion2 decks3 decks
34%synergy
Evolving Wilds
67%inclusion2 decks3 decks
41%synergy
Adarkar Wastes
67%inclusion2 decks3 decks
36%synergy
Witch Enchanter
33%inclusion1 decks3 decks
26%synergy
Desolate Mire
33%inclusion1 decks3 decks
27%synergy
Port Town
33%inclusion1 decks3 decks
16%synergy
Darkwater Catacombs
33%inclusion1 decks3 decks
19%synergy
Spire of Industry
33%inclusion1 decks3 decks
25%synergy
Hydroelectric Specimen
33%inclusion1 decks3 decks
31%synergy
Ash Barrens
33%inclusion1 decks3 decks
23%synergy
Razorgrass Ambush
33%inclusion1 decks3 decks
32%synergy
Skycloud Expanse
33%inclusion1 decks3 decks
19%synergy
Arcane Sanctum
33%inclusion1 decks3 decks
-21%synergy
River of Tears
33%inclusion1 decks3 decks
31%synergy
Jwari Disruption
33%inclusion1 decks3 decks
33%synergy
Sink into Stupor
33%inclusion1 decks3 decks
21%synergy
Shineshadow Snarl
33%inclusion1 decks3 decks
23%synergy
Sunken Hollow
33%inclusion1 decks3 decks
-6%synergy
Choked Estuary
33%inclusion1 decks3 decks
17%synergy
Obscura Storefront
33%inclusion1 decks3 decks
23%synergy
Waterlogged Teachings
33%inclusion1 decks3 decks
29%synergy
Watery Grave
33%inclusion1 decks3 decks
-16%synergy
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