The Master of Keys (Commander) - Budget Upgraded Control

The Master of Keys
Rank #316
2decks
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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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Instants
Sorceries
Utility Artifacts
Enchantments
Utility Lands
Mana Artifacts
Lands
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Scrabbling Skullcrab
100%inclusion2 decks2 decks
99%synergy
Starfield Mystic
100%inclusion2 decks2 decks
93%synergy
Gravebreaker Lamia
100%inclusion2 decks2 decks
99%synergy
Inquisitive Glimmer
100%inclusion2 decks2 decks
92%synergy
Demon of Fate's Design
100%inclusion2 decks2 decks
94%synergy
Silent Hallcreeper
100%inclusion2 decks2 decks
96%synergy
Mesa Enchantress
100%inclusion2 decks2 decks
91%synergy
Victor, Valgavoth's Seneschal
100%inclusion2 decks2 decks
98%synergy
Balemurk Leech
100%inclusion2 decks2 decks
99%synergy
Entity Tracker
100%inclusion2 decks2 decks
93%synergy
Zur, Eternal Schemer
100%inclusion2 decks2 decks
97%synergy
Fear of Infinity
50%inclusion1 decks2 decks
49%synergy
Fear of Isolation
50%inclusion1 decks2 decks
50%synergy
Silent Sentinel
50%inclusion1 decks2 decks
50%synergy
Uchbenbak, the Great Mistake
50%inclusion1 decks2 decks
50%synergy
Fear of Lost Teeth
50%inclusion1 decks2 decks
50%synergy
Dream Eater
50%inclusion1 decks2 decks
49%synergy
Fear of Surveillance
50%inclusion1 decks2 decks
50%synergy
Kiora, the Rising Tide
50%inclusion1 decks2 decks
49%synergy
Horrid Shadowspinner
50%inclusion1 decks2 decks
50%synergy
Fear of Impostors
50%inclusion1 decks2 decks
48%synergy
Stitcher's Supplier
50%inclusion1 decks2 decks
49%synergy
Stalked Researcher
50%inclusion1 decks2 decks
50%synergy
Fear of the Dark
50%inclusion1 decks2 decks
50%synergy
Skullsnap Nuisance
50%inclusion1 decks2 decks
50%synergy
Cruel Somnophage
50%inclusion1 decks2 decks
49%synergy
Arvinox, the Mind Flail
50%inclusion1 decks2 decks
48%synergy
Wall of Denial
50%inclusion1 decks2 decks
50%synergy
Deranged Assistant
50%inclusion1 decks2 decks
50%synergy
Fear of Sleep Paralysis
50%inclusion1 decks2 decks
44%synergy
Creeping Peeper
50%inclusion1 decks2 decks
50%synergy
Blightcaster
50%inclusion1 decks2 decks
50%synergy
Ancient Cellarspawn
50%inclusion1 decks2 decks
47%synergy
Doomwake Giant
50%inclusion1 decks2 decks
44%synergy
Dreadwing Scavenger
50%inclusion1 decks2 decks
49%synergy
Phenomenon Investigators
50%inclusion1 decks2 decks
49%synergy
Zur the Enchanter
50%inclusion1 decks2 decks
45%synergy
Mindwrack Harpy
50%inclusion1 decks2 decks
50%synergy
Instants
Negate
100%inclusion2 decks2 decks
83%synergy
Frantic Search
50%inclusion1 decks2 decks
33%synergy
Refute
50%inclusion1 decks2 decks
47%synergy
Run Away Together
50%inclusion1 decks2 decks
50%synergy
Syncopate
50%inclusion1 decks2 decks
50%synergy
Fact or Fiction
50%inclusion1 decks2 decks
46%synergy
Sublime Epiphany
50%inclusion1 decks2 decks
48%synergy
Thirst for Meaning
50%inclusion1 decks2 decks
48%synergy
Void Rend
50%inclusion1 decks2 decks
17%synergy
Slip Out the Back
50%inclusion1 decks2 decks
49%synergy
Swords to Plowshares
50%inclusion1 decks2 decks
-18%synergy
Get Out
50%inclusion1 decks2 decks
50%synergy
Terror
50%inclusion1 decks2 decks
50%synergy
Utter End
50%inclusion1 decks2 decks
43%synergy
Azorius Charm
50%inclusion1 decks2 decks
50%synergy
Think Twice
50%inclusion1 decks2 decks
50%synergy
Sorceries
Buried Alive
100%inclusion2 decks2 decks
96%synergy
Strategic Planning
50%inclusion1 decks2 decks
50%synergy
Victimize
50%inclusion1 decks2 decks
41%synergy
Come Back Wrong
50%inclusion1 decks2 decks
50%synergy
Split Up
50%inclusion1 decks2 decks
49%synergy
Glimpse the Unthinkable
50%inclusion1 decks2 decks
50%synergy
Revival // Revenge
50%inclusion1 decks2 decks
49%synergy
Wistful Thinking
50%inclusion1 decks2 decks
50%synergy
Extinguish All Hope
50%inclusion1 decks2 decks
48%synergy
Emerge from the Cocoon
50%inclusion1 decks2 decks
50%synergy
Utility Artifacts
Whip of Erebos
50%inclusion1 decks2 decks
48%synergy
Mask of the Schemer
50%inclusion1 decks2 decks
49%synergy
Keys to the House
50%inclusion1 decks2 decks
50%synergy
Darksteel Plate
50%inclusion1 decks2 decks
49%synergy
Enchantments
Cacophony Unleashed
100%inclusion2 decks2 decks
98%synergy
Ethereal Armor
100%inclusion2 decks2 decks
95%synergy
One with the Multiverse
50%inclusion1 decks2 decks
45%synergy
Unholy Strength
50%inclusion1 decks2 decks
50%synergy
Trapped in the Screen
50%inclusion1 decks2 decks
49%synergy
Ripples of Undeath
50%inclusion1 decks2 decks
47%synergy
Underwater Tunnel // Slimy Aquarium
50%inclusion1 decks2 decks
50%synergy
Imprisoned in the Moon
50%inclusion1 decks2 decks
44%synergy
Sigil of the Empty Throne
50%inclusion1 decks2 decks
44%synergy
Shardmage's Rescue
50%inclusion1 decks2 decks
50%synergy
The Eldest Reborn
50%inclusion1 decks2 decks
47%synergy
Grievous Wound
50%inclusion1 decks2 decks
49%synergy
Fear of Death
50%inclusion1 decks2 decks
50%synergy
Blind Obedience
50%inclusion1 decks2 decks
37%synergy
Omniscience
50%inclusion1 decks2 decks
46%synergy
Feast of the Victorious Dead
50%inclusion1 decks2 decks
50%synergy
Spirit-Sister's Call
50%inclusion1 decks2 decks
49%synergy
Meat Locker // Drowned Diner
50%inclusion1 decks2 decks
49%synergy
Derelict Attic // Widow's Walk
50%inclusion1 decks2 decks
50%synergy
The Tale of Tamiyo
50%inclusion1 decks2 decks
50%synergy
Cemetery Tampering
50%inclusion1 decks2 decks
49%synergy
Amphibian Downpour
50%inclusion1 decks2 decks
45%synergy
Seal of Cleansing
50%inclusion1 decks2 decks
48%synergy
Secrets of the Dead
50%inclusion1 decks2 decks
50%synergy
Bottomless Pool // Locker Room
50%inclusion1 decks2 decks
48%synergy
Dress Down
50%inclusion1 decks2 decks
47%synergy
Secret Arcade // Dusty Parlor
50%inclusion1 decks2 decks
45%synergy
Ghostly Prison
50%inclusion1 decks2 decks
29%synergy
Duskmourn's Domination
50%inclusion1 decks2 decks
50%synergy
Angelic Renewal
50%inclusion1 decks2 decks
50%synergy
Cast Out
50%inclusion1 decks2 decks
47%synergy
Defiled Crypt // Cadaver Lab
50%inclusion1 decks2 decks
49%synergy
Utility Lands
Pit of Offerings
50%inclusion1 decks2 decks
50%synergy
Skyline Cascade
50%inclusion1 decks2 decks
50%synergy
Command Beacon
50%inclusion1 decks2 decks
47%synergy
Temple of the False God
50%inclusion1 decks2 decks
42%synergy
Mana Artifacts
Arcane Signet
100%inclusion2 decks2 decks
12%synergy
Sol Ring
100%inclusion2 decks2 decks
10%synergy
Talisman of Dominance
50%inclusion1 decks2 decks
1%synergy
Dimir Signet
50%inclusion1 decks2 decks
17%synergy
Talisman of Hierarchy
50%inclusion1 decks2 decks
7%synergy
Lands
Terramorphic Expanse
100%inclusion2 decks2 decks
83%synergy
Caves of Koilos
100%inclusion2 decks2 decks
65%synergy
Swamp
100%inclusion2 decks2 decks
9%synergy
Island
100%inclusion2 decks2 decks
7%synergy
Plains
100%inclusion2 decks2 decks
9%synergy
Escape Tunnel
50%inclusion1 decks2 decks
49%synergy
Command Tower
50%inclusion1 decks2 decks
-42%synergy
Idyllic Beachfront
50%inclusion1 decks2 decks
46%synergy
Abandoned Campground
50%inclusion1 decks2 decks
49%synergy
Contaminated Landscape
50%inclusion1 decks2 decks
35%synergy
Mistvault Bridge
50%inclusion1 decks2 decks
43%synergy
Fetid Heath
50%inclusion1 decks2 decks
39%synergy
Skybridge Towers
50%inclusion1 decks2 decks
49%synergy
Dimir Guildgate
50%inclusion1 decks2 decks
48%synergy
Tranquil Cove
50%inclusion1 decks2 decks
44%synergy
Thriving Isle
50%inclusion1 decks2 decks
45%synergy
Razortide Bridge
50%inclusion1 decks2 decks
43%synergy
Skycloud Expanse
50%inclusion1 decks2 decks
35%synergy
Isolated Chapel
50%inclusion1 decks2 decks
12%synergy
Underground River
50%inclusion1 decks2 decks
18%synergy
Sunlit Marsh
50%inclusion1 decks2 decks
46%synergy
Evolving Wilds
50%inclusion1 decks2 decks
25%synergy
Azorius Guildgate
50%inclusion1 decks2 decks
48%synergy
Sea Gate
50%inclusion1 decks2 decks
50%synergy
Thriving Moor
50%inclusion1 decks2 decks
45%synergy
Thriving Heath
50%inclusion1 decks2 decks
45%synergy
Scoured Barrens
50%inclusion1 decks2 decks
43%synergy
Obscura Storefront
50%inclusion1 decks2 decks
39%synergy
Temple of Silence
50%inclusion1 decks2 decks
30%synergy
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