The Master of Keys (Commander) - Budget Optimized Combo

The Master of Keys
Rank #303
4decks
As CommanderAs CardAverage DeckDecksView Precon
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Budget
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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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Utility Lands
Mana Artifacts
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Thassa's Oracle
25%inclusion1 decks4 decks
16%synergy
Enlightened Tutor
25%inclusion1 decks4 decks
6%synergy
Creatures
Inquisitive Glimmer
75%inclusion3 decks4 decks
68%synergy
Entity Tracker
75%inclusion3 decks4 decks
69%synergy
Scrabbling Skullcrab
50%inclusion2 decks4 decks
49%synergy
Gravebreaker Lamia
50%inclusion2 decks4 decks
49%synergy
Overlord of the Floodpits
50%inclusion2 decks4 decks
47%synergy
Archon of Sun's Grace
50%inclusion2 decks4 decks
46%synergy
Doom Whisperer
50%inclusion2 decks4 decks
49%synergy
Demon of Fate's Design
50%inclusion2 decks4 decks
45%synergy
Fear of Impostors
50%inclusion2 decks4 decks
49%synergy
Hedron Crab
50%inclusion2 decks4 decks
49%synergy
Leonin Relic-Warder
50%inclusion2 decks4 decks
50%synergy
Mesa Enchantress
50%inclusion2 decks4 decks
41%synergy
Victor, Valgavoth's Seneschal
50%inclusion2 decks4 decks
48%synergy
Gremlin Tamer
50%inclusion2 decks4 decks
49%synergy
Laboratory Maniac
50%inclusion2 decks4 decks
47%synergy
Grim Guardian
50%inclusion2 decks4 decks
48%synergy
Ghostly Dancers
50%inclusion2 decks4 decks
48%synergy
Abdel Adrian, Gorion's Ward
50%inclusion2 decks4 decks
48%synergy
Zur, Eternal Schemer
50%inclusion2 decks4 decks
47%synergy
Stinkweed Imp
50%inclusion2 decks4 decks
50%synergy
The Warring Triad
33%inclusion1 decks3 decks
33%synergy
Starnheim Courser
25%inclusion1 decks4 decks
21%synergy
Fear of Infinity
25%inclusion1 decks4 decks
24%synergy
Witch Enchanter
25%inclusion1 decks4 decks
18%synergy
Displacer Kitten
25%inclusion1 decks4 decks
18%synergy
Lotho, Corrupt Shirriff
25%inclusion1 decks4 decks
8%synergy
Protean Thaumaturge
25%inclusion1 decks4 decks
24%synergy
Hoarding Broodlord
25%inclusion1 decks4 decks
23%synergy
Starfield Mystic
25%inclusion1 decks4 decks
19%synergy
Phyrexian Metamorph
25%inclusion1 decks4 decks
17%synergy
Agent of Erebos
25%inclusion1 decks4 decks
25%synergy
Katilda, Dawnhart Martyr
25%inclusion1 decks4 decks
25%synergy
Mirrorhall Mimic
25%inclusion1 decks4 decks
25%synergy
Heliod, God of the Sun
25%inclusion1 decks4 decks
24%synergy
Hydroelectric Specimen
25%inclusion1 decks4 decks
22%synergy
Sage of Mysteries
25%inclusion1 decks4 decks
25%synergy
Overlord of the Balemurk
25%inclusion1 decks4 decks
23%synergy
Soaring Lightbringer
25%inclusion1 decks4 decks
21%synergy
Silent Hallcreeper
25%inclusion1 decks4 decks
20%synergy
Ashiok's Reaper
25%inclusion1 decks4 decks
25%synergy
Windborn Muse
25%inclusion1 decks4 decks
23%synergy
Overlord of the Mistmoors
25%inclusion1 decks4 decks
23%synergy
Shadow Kin
25%inclusion1 decks4 decks
25%synergy
Stitcher's Supplier
25%inclusion1 decks4 decks
24%synergy
Moon-Blessed Cleric
25%inclusion1 decks4 decks
20%synergy
Angel of Suffering
25%inclusion1 decks4 decks
25%synergy
Ajani's Chosen
25%inclusion1 decks4 decks
24%synergy
Enduring Curiosity
25%inclusion1 decks4 decks
17%synergy
Appendage Amalgam
25%inclusion1 decks4 decks
25%synergy
Fear of Sleep Paralysis
25%inclusion1 decks4 decks
20%synergy
Instants
Counterspell
75%inclusion3 decks4 decks
33%synergy
Dark Ritual
50%inclusion2 decks4 decks
30%synergy
Path to Exile
50%inclusion2 decks4 decks
8%synergy
Sacrifice
25%inclusion1 decks4 decks
24%synergy
An Offer You Can't Refuse
25%inclusion1 decks4 decks
-3%synergy
Negate
25%inclusion1 decks4 decks
9%synergy
Songs of the Damned
25%inclusion1 decks4 decks
25%synergy
Brain Freeze
25%inclusion1 decks4 decks
24%synergy
Razorgrass Ambush
25%inclusion1 decks4 decks
24%synergy
Culling the Weak
25%inclusion1 decks4 decks
23%synergy
Darkblast
25%inclusion1 decks4 decks
25%synergy
Opt
25%inclusion1 decks4 decks
21%synergy
Jwari Disruption
25%inclusion1 decks4 decks
24%synergy
Wash Away
25%inclusion1 decks4 decks
24%synergy
Arcane Denial
25%inclusion1 decks4 decks
5%synergy
Swords to Plowshares
25%inclusion1 decks4 decks
-43%synergy
Get Out
25%inclusion1 decks4 decks
25%synergy
Sink into Stupor
25%inclusion1 decks4 decks
12%synergy
Mana Leak
25%inclusion1 decks4 decks
23%synergy
Waterlogged Teachings
25%inclusion1 decks4 decks
20%synergy
Sorceries
Traumatize
50%inclusion2 decks4 decks
50%synergy
Singularity Rupture
33%inclusion1 decks3 decks
31%synergy
Space-Time Anomaly
33%inclusion1 decks3 decks
32%synergy
Windfall
25%inclusion1 decks4 decks
12%synergy
Resurgent Belief
25%inclusion1 decks4 decks
23%synergy
Sevinne's Reclamation
25%inclusion1 decks4 decks
16%synergy
Dread Return
25%inclusion1 decks4 decks
22%synergy
Cut Your Losses
25%inclusion1 decks4 decks
25%synergy
Glimpse the Unthinkable
25%inclusion1 decks4 decks
25%synergy
Idyllic Tutor
25%inclusion1 decks4 decks
21%synergy
Feed the Swarm
25%inclusion1 decks4 decks
22%synergy
Toxic Deluge
25%inclusion1 decks4 decks
5%synergy
Damn
25%inclusion1 decks4 decks
5%synergy
Utility Artifacts
Mesmeric Orb
25%inclusion1 decks4 decks
24%synergy
Keys to the House
25%inclusion1 decks4 decks
25%synergy
Mirage Mirror
25%inclusion1 decks4 decks
24%synergy
Wishclaw Talisman
25%inclusion1 decks4 decks
17%synergy
Semblance Anvil
25%inclusion1 decks4 decks
24%synergy
Helm of Awakening
25%inclusion1 decks4 decks
25%synergy
Enchantments
Ripples of Undeath
75%inclusion3 decks4 decks
72%synergy
Stillness in Motion
67%inclusion2 decks3 decks
66%synergy
Court of Cunning
50%inclusion2 decks4 decks
49%synergy
Out of the Tombs
50%inclusion2 decks4 decks
50%synergy
Necromancy
50%inclusion2 decks4 decks
46%synergy
Mystic Remora
50%inclusion2 decks4 decks
30%synergy
Amphibian Downpour
50%inclusion2 decks4 decks
45%synergy
Seal of Cleansing
50%inclusion2 decks4 decks
49%synergy
Animate Dead
50%inclusion2 decks4 decks
40%synergy
Enchanted Evening
50%inclusion2 decks4 decks
48%synergy
Secret Arcade // Dusty Parlor
50%inclusion2 decks4 decks
46%synergy
Nowhere to Run
50%inclusion2 decks4 decks
49%synergy
Hallowed Haunting
50%inclusion2 decks4 decks
48%synergy
Dollmaker's Shop // Porcelain Gallery
50%inclusion2 decks4 decks
49%synergy
Ghostly Prison
50%inclusion2 decks4 decks
27%synergy
Propaganda
50%inclusion2 decks4 decks
21%synergy
Endless Evil
25%inclusion1 decks4 decks
25%synergy
Darksteel Mutation
25%inclusion1 decks4 decks
19%synergy
Parallax Wave
25%inclusion1 decks4 decks
25%synergy
Hesitation
25%inclusion1 decks4 decks
25%synergy
Smuggler's Share
25%inclusion1 decks4 decks
23%synergy
Grasp of Fate
25%inclusion1 decks4 decks
19%synergy
Cramped Vents // Access Maze
25%inclusion1 decks4 decks
23%synergy
Cacophony Unleashed
25%inclusion1 decks4 decks
23%synergy
Underwater Tunnel // Slimy Aquarium
25%inclusion1 decks4 decks
25%synergy
Extravagant Replication
25%inclusion1 decks4 decks
20%synergy
Sigil of the Empty Throne
25%inclusion1 decks4 decks
19%synergy
Tinybones Joins Up
25%inclusion1 decks4 decks
24%synergy
Chronic Flooding
25%inclusion1 decks4 decks
25%synergy
Font of Fortunes
25%inclusion1 decks4 decks
25%synergy
Touch the Spirit Realm
25%inclusion1 decks4 decks
23%synergy
Curse of the Bloody Tome
25%inclusion1 decks4 decks
25%synergy
Opalescence
25%inclusion1 decks4 decks
25%synergy
Attunement
25%inclusion1 decks4 decks
25%synergy
Four Knocks
25%inclusion1 decks4 decks
25%synergy
Surgical Suite // Hospital Room
25%inclusion1 decks4 decks
25%synergy
Thought Reflection
25%inclusion1 decks4 decks
25%synergy
Followed Footsteps
25%inclusion1 decks4 decks
24%synergy
Out of Time
25%inclusion1 decks4 decks
24%synergy
Meat Locker // Drowned Diner
25%inclusion1 decks4 decks
25%synergy
Timely Ward
25%inclusion1 decks4 decks
20%synergy
The Toymaker's Trap
25%inclusion1 decks4 decks
24%synergy
Derelict Attic // Widow's Walk
25%inclusion1 decks4 decks
25%synergy
Starfield of Nyx
25%inclusion1 decks4 decks
21%synergy
Central Elevator // Promising Stairs
25%inclusion1 decks4 decks
24%synergy
Sphere of Safety
25%inclusion1 decks4 decks
16%synergy
Cemetery Tampering
25%inclusion1 decks4 decks
24%synergy
March of the Canonized
25%inclusion1 decks4 decks
25%synergy
Funeral Room // Awakening Hall
25%inclusion1 decks4 decks
24%synergy
All That Glitters
25%inclusion1 decks4 decks
17%synergy
Planeswalkers
Teferi, Time Raveler
25%inclusion1 decks4 decks
17%synergy
Utility Lands
Bojuka Bog
50%inclusion2 decks4 decks
23%synergy
Hall of Heliod's Generosity
25%inclusion1 decks4 decks
12%synergy
Emergence Zone
25%inclusion1 decks4 decks
23%synergy
Cephalid Coliseum
25%inclusion1 decks4 decks
21%synergy
Dakmor Salvage
25%inclusion1 decks4 decks
25%synergy
Mana Artifacts
Sol Ring
100%inclusion4 decks4 decks
10%synergy
Arcane Signet
75%inclusion3 decks4 decks
-13%synergy
Talisman of Progress
50%inclusion2 decks4 decks
6%synergy
Talisman of Dominance
50%inclusion2 decks4 decks
-0%synergy
Dimir Signet
50%inclusion2 decks4 decks
20%synergy
Talisman of Hierarchy
50%inclusion2 decks4 decks
5%synergy
Orzhov Signet
50%inclusion2 decks4 decks
18%synergy
Azorius Signet
50%inclusion2 decks4 decks
20%synergy
Commander's Sphere
25%inclusion1 decks4 decks
8%synergy
Machine God's Effigy
25%inclusion1 decks4 decks
24%synergy
Sol Talisman
25%inclusion1 decks4 decks
25%synergy
Fellwar Stone
25%inclusion1 decks4 decks
-8%synergy
Hourglass of the Lost
25%inclusion1 decks4 decks
25%synergy
Mind Stone
25%inclusion1 decks4 decks
13%synergy
Lands
Swamp
100%inclusion4 decks4 decks
8%synergy
Island
100%inclusion4 decks4 decks
7%synergy
Plains
100%inclusion4 decks4 decks
8%synergy
Glacial Fortress
75%inclusion3 decks4 decks
32%synergy
Command Tower
75%inclusion3 decks4 decks
-18%synergy
Caves of Koilos
75%inclusion3 decks4 decks
39%synergy
Arcane Sanctum
75%inclusion3 decks4 decks
21%synergy
Obscura Storefront
75%inclusion3 decks4 decks
66%synergy
Terramorphic Expanse
50%inclusion2 decks4 decks
34%synergy
Exotic Orchard
50%inclusion2 decks4 decks
-9%synergy
Prairie Stream
50%inclusion2 decks4 decks
9%synergy
Valgavoth's Lair
50%inclusion2 decks4 decks
47%synergy
Isolated Chapel
50%inclusion2 decks4 decks
8%synergy
Drowned Catacomb
50%inclusion2 decks4 decks
12%synergy
Underground River
50%inclusion2 decks4 decks
15%synergy
Evolving Wilds
50%inclusion2 decks4 decks
26%synergy
Adarkar Wastes
50%inclusion2 decks4 decks
17%synergy
Witch Enchanter
25%inclusion1 decks4 decks
18%synergy
Contaminated Landscape
25%inclusion1 decks4 decks
11%synergy
Concealed Courtyard
25%inclusion1 decks4 decks
21%synergy
Temple of Deceit
25%inclusion1 decks4 decks
8%synergy
Desolate Mire
25%inclusion1 decks4 decks
18%synergy
Port Town
25%inclusion1 decks4 decks
8%synergy
Darkwater Catacombs
25%inclusion1 decks4 decks
10%synergy
Hydroelectric Specimen
25%inclusion1 decks4 decks
22%synergy
Ash Barrens
25%inclusion1 decks4 decks
14%synergy
Razorgrass Ambush
25%inclusion1 decks4 decks
24%synergy
Godless Shrine
25%inclusion1 decks4 decks
-27%synergy
Skycloud Expanse
25%inclusion1 decks4 decks
10%synergy
Temple of Enlightenment
25%inclusion1 decks4 decks
10%synergy
Jwari Disruption
25%inclusion1 decks4 decks
24%synergy
Seachrome Coast
25%inclusion1 decks4 decks
21%synergy
Darkslick Shores
25%inclusion1 decks4 decks
21%synergy
Sink into Stupor
25%inclusion1 decks4 decks
12%synergy
Shineshadow Snarl
25%inclusion1 decks4 decks
14%synergy
Sunken Hollow
25%inclusion1 decks4 decks
-15%synergy
Choked Estuary
25%inclusion1 decks4 decks
8%synergy
Waterlogged Teachings
25%inclusion1 decks4 decks
20%synergy
Temple of Silence
25%inclusion1 decks4 decks
7%synergy
Watery Grave
25%inclusion1 decks4 decks
-26%synergy
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