The Master of Keys (Commander) - Core Voltron

The Master of Keys
Rank #295
8decks
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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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Ethereal Armor
75%inclusion6 decks8 decks
71%synergy
All That Glitters
75%inclusion6 decks8 decks
67%synergy
Mesa Enchantress
75%inclusion6 decks8 decks
66%synergy
Sheltered by Ghosts
63%inclusion5 decks8 decks
60%synergy
Doomwake Giant
63%inclusion5 decks8 decks
57%synergy
Starfield Mystic
63%inclusion5 decks8 decks
56%synergy
Inquisitive Glimmer
63%inclusion5 decks8 decks
56%synergy
Fear of Impostors
50%inclusion4 decks8 decks
49%synergy
Seal of Cleansing
50%inclusion4 decks8 decks
49%synergy
Extinguish All Hope
50%inclusion4 decks8 decks
48%synergy
Top Cards
Sevinne's Reclamation
50%inclusion4 decks8 decks
41%synergy
Ripples of Undeath
50%inclusion4 decks8 decks
47%synergy
Timely Ward
50%inclusion4 decks8 decks
45%synergy
Steel of the Godhead
50%inclusion4 decks8 decks
46%synergy
Sage's Reverie
50%inclusion4 decks8 decks
48%synergy
Otherworldly Gaze
50%inclusion4 decks8 decks
48%synergy
Entity Tracker
50%inclusion4 decks8 decks
44%synergy
Ondu Spiritdancer
50%inclusion4 decks8 decks
44%synergy
Game Changers
Necropotence
13%inclusion1 decks8 decks
6%synergy
Creatures
Starnheim Courser
38%inclusion3 decks8 decks
34%synergy
Gravebreaker Lamia
38%inclusion3 decks8 decks
36%synergy
Victor, Valgavoth's Seneschal
38%inclusion3 decks8 decks
36%synergy
Zur, Eternal Schemer
38%inclusion3 decks8 decks
34%synergy
Scrabbling Skullcrab
25%inclusion2 decks8 decks
24%synergy
Kor Spiritdancer
25%inclusion2 decks8 decks
24%synergy
Overlord of the Floodpits
25%inclusion2 decks8 decks
22%synergy
Agent of Erebos
25%inclusion2 decks8 decks
25%synergy
Eidolon of Countless Battles
25%inclusion2 decks8 decks
24%synergy
Sram, Senior Edificer
25%inclusion2 decks8 decks
20%synergy
Stitcher's Supplier
25%inclusion2 decks8 decks
24%synergy
Skullsnap Nuisance
25%inclusion2 decks8 decks
25%synergy
Pearl-Ear, Imperial Advisor
25%inclusion2 decks8 decks
23%synergy
Hateful Eidolon
25%inclusion2 decks8 decks
24%synergy
Creeping Peeper
25%inclusion2 decks8 decks
25%synergy
Alseid of Life's Bounty
25%inclusion2 decks8 decks
24%synergy
Zur the Enchanter
25%inclusion2 decks8 decks
20%synergy
Stinkweed Imp
25%inclusion2 decks8 decks
25%synergy
Killian, Ink Duelist
25%inclusion2 decks8 decks
23%synergy
Bruna, Light of Alabaster
25%inclusion2 decks8 decks
24%synergy
Callaphe, Beloved of the Sea
25%inclusion2 decks8 decks
24%synergy
Summon: Yojimbo
20%inclusion1 decks5 decks
19%synergy
Wraith, Vicious Vigilante
20%inclusion1 decks5 decks
20%synergy
Sygg, Wanderwine Wisdom
20%inclusion1 decks5 decks
19%synergy
Witch Enchanter
13%inclusion1 decks8 decks
5%synergy
Hero of Iroas
13%inclusion1 decks8 decks
12%synergy
Light-Paws, Emperor's Voice
13%inclusion1 decks8 decks
12%synergy
Grim Servant
13%inclusion1 decks8 decks
12%synergy
Cataclysmic Gearhulk
13%inclusion1 decks8 decks
11%synergy
Lord of the Forsaken
13%inclusion1 decks8 decks
12%synergy
Hanna, Ship's Navigator
13%inclusion1 decks8 decks
11%synergy
Lurrus of the Dream-Den
13%inclusion1 decks8 decks
11%synergy
Undead Butler
13%inclusion1 decks8 decks
12%synergy
Arna Kennerüd, Skycaptain
13%inclusion1 decks8 decks
11%synergy
Valley Floodcaller
13%inclusion1 decks8 decks
9%synergy
Doom Whisperer
13%inclusion1 decks8 decks
11%synergy
Danitha Capashen, Paragon
13%inclusion1 decks8 decks
9%synergy
Twinblade Geist
13%inclusion1 decks8 decks
12%synergy
Heliod, God of the Sun
13%inclusion1 decks8 decks
11%synergy
Malevolent Hermit
13%inclusion1 decks8 decks
12%synergy
Demon of Fate's Design
13%inclusion1 decks8 decks
7%synergy
Hydroelectric Specimen
13%inclusion1 decks8 decks
10%synergy
Ephara, God of the Polis
13%inclusion1 decks8 decks
12%synergy
Tireless Tribe
13%inclusion1 decks8 decks
10%synergy
Sage of Mysteries
13%inclusion1 decks8 decks
12%synergy
Heliod, Sun-Crowned
13%inclusion1 decks8 decks
9%synergy
The Ancient One
13%inclusion1 decks8 decks
12%synergy
Silent Hallcreeper
13%inclusion1 decks8 decks
8%synergy
Vhal, Candlekeep Researcher
13%inclusion1 decks8 decks
12%synergy
Boggart Trawler
13%inclusion1 decks8 decks
9%synergy
Instants
Frantic Search
38%inclusion3 decks8 decks
18%synergy
Swords to Plowshares
38%inclusion3 decks8 decks
-30%synergy
Entomb
25%inclusion2 decks8 decks
18%synergy
Negate
25%inclusion2 decks8 decks
9%synergy
Dawn's Truce
25%inclusion2 decks8 decks
21%synergy
Consider
25%inclusion2 decks8 decks
23%synergy
Dark Ritual
25%inclusion2 decks8 decks
4%synergy
Cabal Ritual
25%inclusion2 decks8 decks
22%synergy
Arcane Denial
25%inclusion2 decks8 decks
5%synergy
Hagra Mauling
13%inclusion1 decks8 decks
11%synergy
Muddle the Mixture
13%inclusion1 decks8 decks
9%synergy
Absorb
13%inclusion1 decks8 decks
10%synergy
An Offer You Can't Refuse
13%inclusion1 decks8 decks
-16%synergy
Brainstorm
13%inclusion1 decks8 decks
-4%synergy
Prologue to Phyresis
13%inclusion1 decks8 decks
12%synergy
Fact or Fiction
13%inclusion1 decks8 decks
9%synergy
Darkblast
13%inclusion1 decks8 decks
12%synergy
Tolarian Winds
13%inclusion1 decks8 decks
11%synergy
Curfew
13%inclusion1 decks8 decks
12%synergy
Thirst for Meaning
13%inclusion1 decks8 decks
11%synergy
Curate
13%inclusion1 decks8 decks
12%synergy
Slip Out the Back
13%inclusion1 decks8 decks
12%synergy
Swan Song
13%inclusion1 decks8 decks
-8%synergy
Perplex
13%inclusion1 decks8 decks
11%synergy
Jwari Disruption
13%inclusion1 decks8 decks
12%synergy
Anguished Unmaking
13%inclusion1 decks8 decks
-14%synergy
Change of Plans
13%inclusion1 decks8 decks
12%synergy
Faithful Mending
13%inclusion1 decks8 decks
9%synergy
Surge of Salvation
13%inclusion1 decks8 decks
12%synergy
Counterspell
13%inclusion1 decks8 decks
-30%synergy
Borne Upon a Wind
13%inclusion1 decks8 decks
8%synergy
Sejiri Shelter
13%inclusion1 decks8 decks
11%synergy
Abjure
13%inclusion1 decks8 decks
12%synergy
March of Swirling Mist
13%inclusion1 decks8 decks
11%synergy
Generous Gift
13%inclusion1 decks8 decks
-1%synergy
Sorceries
Retether
38%inclusion3 decks8 decks
37%synergy
Glimpse the Unthinkable
25%inclusion2 decks8 decks
24%synergy
Winds of Rath
25%inclusion2 decks8 decks
23%synergy
Space-Time Anomaly
20%inclusion1 decks5 decks
18%synergy
Windfall
13%inclusion1 decks8 decks
-0%synergy
Lively Dirge
13%inclusion1 decks8 decks
11%synergy
Tunnel Vision
13%inclusion1 decks8 decks
12%synergy
Resurgent Belief
13%inclusion1 decks8 decks
11%synergy
Psionic Ritual
13%inclusion1 decks8 decks
12%synergy
Bond of Insight
13%inclusion1 decks8 decks
12%synergy
Bloodchief's Thirst
13%inclusion1 decks8 decks
12%synergy
Tome Scour
13%inclusion1 decks8 decks
12%synergy
Unearth
13%inclusion1 decks8 decks
11%synergy
Treasure Cruise
13%inclusion1 decks8 decks
9%synergy
Infectious Inquiry
13%inclusion1 decks8 decks
12%synergy
Contingency Plan
13%inclusion1 decks8 decks
12%synergy
Buried Alive
13%inclusion1 decks8 decks
8%synergy
Ancestral Memories
13%inclusion1 decks8 decks
12%synergy
Reanimate
13%inclusion1 decks8 decks
-4%synergy
Diresight
13%inclusion1 decks8 decks
12%synergy
Preordain
13%inclusion1 decks8 decks
8%synergy
Damn
13%inclusion1 decks8 decks
-8%synergy
Unburial Rites
13%inclusion1 decks8 decks
10%synergy
Traumatize
13%inclusion1 decks8 decks
12%synergy
Notion Rain
13%inclusion1 decks8 decks
12%synergy
Dance of the Manse
13%inclusion1 decks8 decks
9%synergy
Utility Artifacts
Perpetual Timepiece
13%inclusion1 decks8 decks
12%synergy
The Grim Captain's Locker
13%inclusion1 decks8 decks
12%synergy
Wayfarer's Bauble
13%inclusion1 decks8 decks
6%synergy
Helm of the Gods
13%inclusion1 decks8 decks
12%synergy
Whip of Erebos
13%inclusion1 decks8 decks
10%synergy
Confession Dial
13%inclusion1 decks8 decks
12%synergy
Lavaspur Boots
13%inclusion1 decks8 decks
11%synergy
Key to the City
13%inclusion1 decks8 decks
11%synergy
Mask of Riddles
13%inclusion1 decks8 decks
11%synergy
Swiftfoot Boots
13%inclusion1 decks8 decks
-12%synergy
Enchantments
Super State
40%inclusion2 decks5 decks
39%synergy
Sphere of Safety
38%inclusion3 decks8 decks
28%synergy
Auramancer's Guise
38%inclusion3 decks8 decks
37%synergy
Combat Research
38%inclusion3 decks8 decks
35%synergy
Animate Dead
38%inclusion3 decks8 decks
28%synergy
Phyresis
38%inclusion3 decks8 decks
35%synergy
Mantle of the Ancients
38%inclusion3 decks8 decks
35%synergy
Curator's Ward
38%inclusion3 decks8 decks
35%synergy
Daybreak Coronet
38%inclusion3 decks8 decks
36%synergy
Propaganda
38%inclusion3 decks8 decks
8%synergy
Glasswing Grace
38%inclusion3 decks8 decks
35%synergy
Cemetery Tampering
38%inclusion3 decks8 decks
37%synergy
Kaya's Ghostform
38%inclusion3 decks8 decks
35%synergy
Leyline of Anticipation
25%inclusion2 decks8 decks
21%synergy
Derelict Attic // Widow's Walk
25%inclusion2 decks8 decks
25%synergy
Idolized
25%inclusion2 decks8 decks
24%synergy
Spirit Mantle
25%inclusion2 decks8 decks
24%synergy
Chains of Custody
25%inclusion2 decks8 decks
24%synergy
Estrid's Invocation
25%inclusion2 decks8 decks
20%synergy
Unquestioned Authority
25%inclusion2 decks8 decks
24%synergy
Sigil of the Empty Throne
25%inclusion2 decks8 decks
19%synergy
Spiral into Solitude
25%inclusion1 decks4 decks
25%synergy
Cacophony Unleashed
25%inclusion2 decks8 decks
23%synergy
Smuggler's Share
25%inclusion2 decks8 decks
23%synergy
Doom Foretold
25%inclusion2 decks8 decks
25%synergy
Mystic Remora
25%inclusion2 decks8 decks
5%synergy
Security Bypass
25%inclusion2 decks8 decks
25%synergy
Unable to Scream
25%inclusion2 decks8 decks
24%synergy
Detention Sphere
25%inclusion2 decks8 decks
24%synergy
Battle Mastery
25%inclusion2 decks8 decks
24%synergy
Eldrazi Conscription
25%inclusion2 decks8 decks
24%synergy
Secrets of the Dead
25%inclusion2 decks8 decks
25%synergy
Hyena Umbra
25%inclusion2 decks8 decks
24%synergy
Static Prison
25%inclusion2 decks8 decks
25%synergy
Monologue Tax
25%inclusion2 decks8 decks
18%synergy
Dress Down
25%inclusion2 decks8 decks
23%synergy
Curse of Verbosity
25%inclusion2 decks8 decks
24%synergy
Martial Impetus
25%inclusion2 decks8 decks
25%synergy
Witness Protection
25%inclusion2 decks8 decks
23%synergy
Solitary Confinement
25%inclusion2 decks8 decks
23%synergy
Amphibian Downpour
25%inclusion2 decks8 decks
20%synergy
Search for Azcanta
25%inclusion2 decks8 decks
24%synergy
Aqueous Form
25%inclusion2 decks8 decks
22%synergy
Noggle the Mind
25%inclusion1 decks4 decks
24%synergy
Soul Snare
25%inclusion2 decks8 decks
25%synergy
Builder's Talent
13%inclusion1 decks8 decks
12%synergy
Consulate Surveillance
13%inclusion1 decks8 decks
12%synergy
Sky Tether
13%inclusion1 decks8 decks
12%synergy
Darksteel Mutation
13%inclusion1 decks8 decks
6%synergy
Demonic Vigor
13%inclusion1 decks8 decks
12%synergy
Battles
Invasion of Theros
13%inclusion1 decks8 decks
11%synergy
Planeswalkers
Kaya, Intangible Slayer
13%inclusion1 decks8 decks
12%synergy
Ashiok, Dream Render
13%inclusion1 decks8 decks
11%synergy
Utility Lands
Hall of Heliod's Generosity
38%inclusion3 decks8 decks
25%synergy
Emergence Zone
25%inclusion2 decks8 decks
23%synergy
Cephalid Coliseum
25%inclusion2 decks8 decks
21%synergy
Rogue's Passage
25%inclusion2 decks8 decks
15%synergy
Mistrise Village
20%inclusion1 decks5 decks
17%synergy
Ishgard, the Holy See
20%inclusion1 decks5 decks
17%synergy
Bojuka Bog
13%inclusion1 decks8 decks
-14%synergy
Memorial to Folly
13%inclusion1 decks8 decks
12%synergy
Barren Moor
13%inclusion1 decks8 decks
11%synergy
Lonely Sandbar
13%inclusion1 decks8 decks
11%synergy
Geier Reach Sanitarium
13%inclusion1 decks8 decks
8%synergy
Secluded Steppe
13%inclusion1 decks8 decks
11%synergy
Sea Gate Wreckage
13%inclusion1 decks8 decks
12%synergy
Hidden Cataract
13%inclusion1 decks8 decks
12%synergy
Tocasia's Dig Site
13%inclusion1 decks8 decks
12%synergy
Great Hall of the Citadel
13%inclusion1 decks8 decks
12%synergy
Temple of the False God
13%inclusion1 decks8 decks
5%synergy
Mana Artifacts
Arcane Signet
88%inclusion7 decks8 decks
-0%synergy
Sol Ring
75%inclusion6 decks8 decks
-15%synergy
Talisman of Dominance
50%inclusion4 decks8 decks
-0%synergy
Dimir Signet
50%inclusion4 decks8 decks
21%synergy
Azorius Signet
50%inclusion4 decks8 decks
21%synergy
Talisman of Progress
25%inclusion2 decks8 decks
-20%synergy
Fellwar Stone
25%inclusion2 decks8 decks
-8%synergy
Talisman of Hierarchy
25%inclusion2 decks8 decks
-20%synergy
Orzhov Signet
25%inclusion2 decks8 decks
-6%synergy
All-Fates Scroll
20%inclusion1 decks5 decks
20%synergy
Commander's Sphere
13%inclusion1 decks8 decks
-4%synergy
Thought Vessel
13%inclusion1 decks8 decks
-13%synergy
Worn Powerstone
13%inclusion1 decks8 decks
11%synergy
Midnight Clock
13%inclusion1 decks8 decks
9%synergy
Mind Stone
13%inclusion1 decks8 decks
1%synergy
Lands
Command Tower
100%inclusion8 decks8 decks
7%synergy
Swamp
100%inclusion8 decks8 decks
8%synergy
Island
100%inclusion8 decks8 decks
7%synergy
Plains
100%inclusion8 decks8 decks
8%synergy
Adarkar Wastes
88%inclusion7 decks8 decks
54%synergy
Caves of Koilos
75%inclusion6 decks8 decks
39%synergy
Exotic Orchard
63%inclusion5 decks8 decks
3%synergy
Arcane Sanctum
63%inclusion5 decks8 decks
9%synergy
Underground River
63%inclusion5 decks8 decks
27%synergy
Evolving Wilds
63%inclusion5 decks8 decks
38%synergy
Obscura Storefront
63%inclusion5 decks8 decks
54%synergy
Terramorphic Expanse
50%inclusion4 decks8 decks
35%synergy
Contaminated Landscape
50%inclusion4 decks8 decks
37%synergy
Port Town
50%inclusion4 decks8 decks
33%synergy
Darkwater Catacombs
50%inclusion4 decks8 decks
35%synergy
Prairie Stream
50%inclusion4 decks8 decks
9%synergy
Sunken Hollow
50%inclusion4 decks8 decks
10%synergy
Glacial Fortress
38%inclusion3 decks8 decks
-7%synergy
Undercity Sewers
38%inclusion3 decks8 decks
23%synergy
Glasswing Grace
38%inclusion3 decks8 decks
35%synergy
Fetid Heath
38%inclusion3 decks8 decks
23%synergy
Ash Barrens
38%inclusion3 decks8 decks
27%synergy
Shipwreck Marsh
38%inclusion3 decks8 decks
17%synergy
Drowned Catacomb
38%inclusion3 decks8 decks
-2%synergy
Fetid Pools
25%inclusion2 decks8 decks
18%synergy
Irrigated Farmland
25%inclusion2 decks8 decks
18%synergy
Valgavoth's Lair
25%inclusion2 decks8 decks
23%synergy
Godless Shrine
25%inclusion2 decks8 decks
-27%synergy
Skycloud Expanse
25%inclusion2 decks8 decks
10%synergy
Isolated Chapel
25%inclusion2 decks8 decks
-18%synergy
Path of Ancestry
25%inclusion2 decks8 decks
-3%synergy
Meticulous Archive
25%inclusion2 decks8 decks
11%synergy
Choked Estuary
25%inclusion2 decks8 decks
8%synergy
Mystic Gate
25%inclusion2 decks8 decks
19%synergy
Deserted Beach
25%inclusion2 decks8 decks
4%synergy
Hallowed Fountain
25%inclusion2 decks8 decks
-26%synergy
Watery Grave
25%inclusion2 decks8 decks
-27%synergy
Hagra Mauling
13%inclusion1 decks8 decks
11%synergy
Tainted Isle
13%inclusion1 decks8 decks
6%synergy
Witch Enchanter
13%inclusion1 decks8 decks
5%synergy
Gemstone Mine
13%inclusion1 decks8 decks
12%synergy
Azorius Chancery
13%inclusion1 decks8 decks
-0%synergy
Shadowy Backstreet
13%inclusion1 decks8 decks
-0%synergy
Myriad Landscape
13%inclusion1 decks8 decks
5%synergy
Temple of Deceit
13%inclusion1 decks8 decks
-4%synergy
Dimir Aqueduct
13%inclusion1 decks8 decks
0%synergy
Hidden Grotto
13%inclusion1 decks8 decks
12%synergy
Desolate Mire
13%inclusion1 decks8 decks
5%synergy
Tainted Field
13%inclusion1 decks8 decks
6%synergy
Hydroelectric Specimen
13%inclusion1 decks8 decks
10%synergy
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