The Master of Keys (Commander) - Budget Upgraded Control

The Master of Keys
Rank #302
4decks
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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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Sorceries
Utility Artifacts
Enchantments
Utility Lands
Mana Artifacts
Lands
Back to Top
Scrabbling Skullcrab
100%inclusion4 decks4 decks
99%synergy
Ethereal Armor
100%inclusion4 decks4 decks
95%synergy
Demon of Fate's Design
100%inclusion4 decks4 decks
95%synergy
Entity Tracker
100%inclusion4 decks4 decks
94%synergy
Game Changers
Gifts Ungiven
25%inclusion1 decks4 decks
22%synergy
Creatures
Starfield Mystic
75%inclusion3 decks4 decks
68%synergy
Inquisitive Glimmer
75%inclusion3 decks4 decks
68%synergy
Fear of Impostors
75%inclusion3 decks4 decks
74%synergy
Mesa Enchantress
75%inclusion3 decks4 decks
66%synergy
Doomwake Giant
75%inclusion3 decks4 decks
69%synergy
Zur, Eternal Schemer
75%inclusion3 decks4 decks
72%synergy
Gravebreaker Lamia
50%inclusion2 decks4 decks
49%synergy
Silent Hallcreeper
50%inclusion2 decks4 decks
45%synergy
Skullsnap Nuisance
50%inclusion2 decks4 decks
50%synergy
Deranged Assistant
50%inclusion2 decks4 decks
50%synergy
Fear of Sleep Paralysis
50%inclusion2 decks4 decks
45%synergy
Balemurk Leech
50%inclusion2 decks4 decks
49%synergy
Ancient Cellarspawn
50%inclusion2 decks4 decks
47%synergy
Millikin
50%inclusion2 decks4 decks
49%synergy
Optimistic Scavenger
25%inclusion1 decks4 decks
25%synergy
Fear of Infinity
25%inclusion1 decks4 decks
24%synergy
Witch Enchanter
25%inclusion1 decks4 decks
18%synergy
Silent Sentinel
25%inclusion1 decks4 decks
25%synergy
Kor Spiritdancer
25%inclusion1 decks4 decks
23%synergy
Overlord of the Floodpits
25%inclusion1 decks4 decks
21%synergy
Uchbenbak, the Great Mistake
25%inclusion1 decks4 decks
25%synergy
Archon of Sun's Grace
25%inclusion1 decks4 decks
20%synergy
Fear of Surveillance
25%inclusion1 decks4 decks
25%synergy
Hydroelectric Specimen
25%inclusion1 decks4 decks
22%synergy
Horrid Shadowspinner
25%inclusion1 decks4 decks
25%synergy
Soaring Lightbringer
25%inclusion1 decks4 decks
20%synergy
Archetype of Courage
25%inclusion1 decks4 decks
24%synergy
Stitcher's Supplier
25%inclusion1 decks4 decks
24%synergy
Ruin Crab
25%inclusion1 decks4 decks
24%synergy
Stalked Researcher
25%inclusion1 decks4 decks
25%synergy
Sheoldred, Whispering One
25%inclusion1 decks4 decks
21%synergy
Fear of the Dark
25%inclusion1 decks4 decks
25%synergy
Victor, Valgavoth's Seneschal
25%inclusion1 decks4 decks
23%synergy
Enduring Tenacity
25%inclusion1 decks4 decks
17%synergy
Cruel Somnophage
25%inclusion1 decks4 decks
25%synergy
Athreos, Shroud-Veiled
25%inclusion1 decks4 decks
21%synergy
Wall of Denial
25%inclusion1 decks4 decks
25%synergy
Archetype of Imagination
25%inclusion1 decks4 decks
20%synergy
Creeping Peeper
25%inclusion1 decks4 decks
25%synergy
Nashi, Searcher in the Dark
25%inclusion1 decks4 decks
24%synergy
Blightcaster
25%inclusion1 decks4 decks
25%synergy
Nightmare Shepherd
25%inclusion1 decks4 decks
23%synergy
Dreadwing Scavenger
25%inclusion1 decks4 decks
24%synergy
Aminatou, Veil Piercer
25%inclusion1 decks4 decks
24%synergy
Grim Guardian
25%inclusion1 decks4 decks
23%synergy
Ghostly Dancers
25%inclusion1 decks4 decks
23%synergy
Phenomenon Investigators
25%inclusion1 decks4 decks
24%synergy
Ondu Spiritdancer
25%inclusion1 decks4 decks
19%synergy
Zur the Enchanter
25%inclusion1 decks4 decks
20%synergy
Priest of Fell Rites
25%inclusion1 decks4 decks
22%synergy
Instants
Negate
75%inclusion3 decks4 decks
59%synergy
Swords to Plowshares
75%inclusion3 decks4 decks
7%synergy
Fact or Fiction
50%inclusion2 decks4 decks
46%synergy
Thirst for Meaning
50%inclusion2 decks4 decks
49%synergy
Void Rend
50%inclusion2 decks4 decks
15%synergy
Slip Out the Back
50%inclusion2 decks4 decks
49%synergy
Counterspell
50%inclusion2 decks4 decks
8%synergy
Frantic Search
25%inclusion1 decks4 decks
7%synergy
Dovin's Veto
25%inclusion1 decks4 decks
-1%synergy
An Offer You Can't Refuse
25%inclusion1 decks4 decks
-2%synergy
Refute
25%inclusion1 decks4 decks
22%synergy
Run Away Together
25%inclusion1 decks4 decks
25%synergy
Confounding Riddle
25%inclusion1 decks4 decks
25%synergy
Sublime Epiphany
25%inclusion1 decks4 decks
22%synergy
Defabricate
25%inclusion1 decks4 decks
25%synergy
Winds of Rebuke
25%inclusion1 decks4 decks
25%synergy
Disallow
25%inclusion1 decks4 decks
21%synergy
Arcane Denial
25%inclusion1 decks4 decks
5%synergy
Get Out
25%inclusion1 decks4 decks
25%synergy
Terror
25%inclusion1 decks4 decks
25%synergy
Shelter
25%inclusion1 decks4 decks
25%synergy
Utter End
25%inclusion1 decks4 decks
19%synergy
Path to Exile
25%inclusion1 decks4 decks
-17%synergy
Inkshield
25%inclusion1 decks4 decks
15%synergy
Azorius Charm
25%inclusion1 decks4 decks
25%synergy
Rowan's Grim Search
25%inclusion1 decks4 decks
25%synergy
Think Twice
25%inclusion1 decks4 decks
25%synergy
Akroma's Will
25%inclusion1 decks4 decks
19%synergy
Sorceries
Buried Alive
50%inclusion2 decks4 decks
46%synergy
Extinguish All Hope
50%inclusion2 decks4 decks
48%synergy
Strategic Planning
25%inclusion1 decks4 decks
25%synergy
Austere Command
25%inclusion1 decks4 decks
16%synergy
Resurgent Belief
25%inclusion1 decks4 decks
23%synergy
Sevinne's Reclamation
25%inclusion1 decks4 decks
16%synergy
Victimize
25%inclusion1 decks4 decks
16%synergy
Come Back Wrong
25%inclusion1 decks4 decks
25%synergy
Split Up
25%inclusion1 decks4 decks
24%synergy
Time Wipe
25%inclusion1 decks4 decks
18%synergy
Terminus
25%inclusion1 decks4 decks
21%synergy
Cut Your Losses
25%inclusion1 decks4 decks
25%synergy
Glimpse the Unthinkable
25%inclusion1 decks4 decks
25%synergy
Single Combat
25%inclusion1 decks4 decks
24%synergy
Revival // Revenge
25%inclusion1 decks4 decks
24%synergy
Promise of Loyalty
25%inclusion1 decks4 decks
21%synergy
Redress Fate
25%inclusion1 decks4 decks
19%synergy
Emerge from the Cocoon
25%inclusion1 decks4 decks
25%synergy
Singularity Rupture
25%inclusion1 decks4 decks
23%synergy
Utility Artifacts
Swiftfoot Boots
50%inclusion2 decks4 decks
26%synergy
Wayfarer's Bauble
25%inclusion1 decks4 decks
17%synergy
Whip of Erebos
25%inclusion1 decks4 decks
23%synergy
Mask of the Schemer
25%inclusion1 decks4 decks
24%synergy
Keys to the House
25%inclusion1 decks4 decks
25%synergy
Riverchurn Monument
25%inclusion1 decks4 decks
25%synergy
Darksteel Plate
25%inclusion1 decks4 decks
24%synergy
Enchantments
The Tale of Tamiyo
75%inclusion3 decks4 decks
75%synergy
Cemetery Tampering
75%inclusion3 decks4 decks
74%synergy
One with the Multiverse
50%inclusion2 decks4 decks
45%synergy
Grasp of Fate
50%inclusion2 decks4 decks
44%synergy
Cacophony Unleashed
50%inclusion2 decks4 decks
48%synergy
Ripples of Undeath
50%inclusion2 decks4 decks
47%synergy
Imprisoned in the Moon
50%inclusion2 decks4 decks
43%synergy
Sigil of the Empty Throne
50%inclusion2 decks4 decks
44%synergy
Mirrormade
50%inclusion2 decks4 decks
40%synergy
Copy Enchantment
50%inclusion2 decks4 decks
45%synergy
Amphibian Downpour
50%inclusion2 decks4 decks
45%synergy
Secret Arcade // Dusty Parlor
50%inclusion2 decks4 decks
45%synergy
Defiled Crypt // Cadaver Lab
50%inclusion2 decks4 decks
49%synergy
Darksteel Mutation
25%inclusion1 decks4 decks
19%synergy
Unholy Strength
25%inclusion1 decks4 decks
25%synergy
Cramped Vents // Access Maze
25%inclusion1 decks4 decks
23%synergy
Protective Bubble
25%inclusion1 decks4 decks
25%synergy
Trapped in the Screen
25%inclusion1 decks4 decks
24%synergy
Underwater Tunnel // Slimy Aquarium
25%inclusion1 decks4 decks
25%synergy
Coerced to Kill
25%inclusion1 decks4 decks
25%synergy
Extravagant Replication
25%inclusion1 decks4 decks
20%synergy
Shardmage's Rescue
25%inclusion1 decks4 decks
25%synergy
The Eldest Reborn
25%inclusion1 decks4 decks
23%synergy
Grievous Wound
25%inclusion1 decks4 decks
24%synergy
Fear of Death
25%inclusion1 decks4 decks
25%synergy
Authority of the Consuls
25%inclusion1 decks4 decks
12%synergy
Chains of Custody
25%inclusion1 decks4 decks
24%synergy
Mantle of the Ancients
25%inclusion1 decks4 decks
22%synergy
Estrid's Invocation
25%inclusion1 decks4 decks
20%synergy
Stasis Field
25%inclusion1 decks4 decks
25%synergy
Meat Locker // Drowned Diner
25%inclusion1 decks4 decks
25%synergy
The Long Reach of Night
25%inclusion1 decks4 decks
25%synergy
Timely Ward
25%inclusion1 decks4 decks
20%synergy
Sphere of Safety
25%inclusion1 decks4 decks
16%synergy
Karmic Justice
25%inclusion1 decks4 decks
23%synergy
All That Glitters
25%inclusion1 decks4 decks
16%synergy
Seal of Cleansing
25%inclusion1 decks4 decks
24%synergy
Curator's Ward
25%inclusion1 decks4 decks
22%synergy
Monologue Tax
25%inclusion1 decks4 decks
19%synergy
Disturbing Conversion
25%inclusion1 decks4 decks
25%synergy
Sigil of Myrkul
25%inclusion1 decks4 decks
25%synergy
Secrets of the Dead
25%inclusion1 decks4 decks
25%synergy
Bottomless Pool // Locker Room
25%inclusion1 decks4 decks
23%synergy
Court of Ardenvale
25%inclusion1 decks4 decks
24%synergy
Animate Dead
25%inclusion1 decks4 decks
15%synergy
Dress Down
25%inclusion1 decks4 decks
23%synergy
Redemption Arc
25%inclusion1 decks4 decks
25%synergy
Spirit Link
25%inclusion1 decks4 decks
24%synergy
Sheltered by Ghosts
25%inclusion1 decks4 decks
22%synergy
Nowhere to Run
25%inclusion1 decks4 decks
24%synergy
Utility Lands
Hall of Heliod's Generosity
50%inclusion2 decks4 decks
37%synergy
Temple of the False God
50%inclusion2 decks4 decks
42%synergy
Pit of Offerings
25%inclusion1 decks4 decks
25%synergy
Bojuka Bog
25%inclusion1 decks4 decks
-2%synergy
Barren Moor
25%inclusion1 decks4 decks
23%synergy
Halimar Depths
25%inclusion1 decks4 decks
20%synergy
Lonely Sandbar
25%inclusion1 decks4 decks
23%synergy
Skyline Cascade
25%inclusion1 decks4 decks
25%synergy
Command Beacon
25%inclusion1 decks4 decks
22%synergy
Secluded Steppe
25%inclusion1 decks4 decks
23%synergy
Reliquary Tower
25%inclusion1 decks4 decks
-9%synergy
Rogue's Passage
25%inclusion1 decks4 decks
15%synergy
Mana Artifacts
Arcane Signet
100%inclusion4 decks4 decks
12%synergy
Sol Ring
100%inclusion4 decks4 decks
10%synergy
Talisman of Dominance
50%inclusion2 decks4 decks
0%synergy
Talisman of Hierarchy
50%inclusion2 decks4 decks
6%synergy
Mind Stone
50%inclusion2 decks4 decks
38%synergy
Azorius Signet
50%inclusion2 decks4 decks
19%synergy
Talisman of Progress
25%inclusion1 decks4 decks
-19%synergy
Fellwar Stone
25%inclusion1 decks4 decks
-8%synergy
Orzhov Signet
25%inclusion1 decks4 decks
-8%synergy
Lands
Command Tower
100%inclusion4 decks4 decks
7%synergy
Caves of Koilos
100%inclusion4 decks4 decks
64%synergy
Swamp
100%inclusion4 decks4 decks
8%synergy
Island
100%inclusion4 decks4 decks
7%synergy
Plains
100%inclusion4 decks4 decks
8%synergy
Abandoned Campground
75%inclusion3 decks4 decks
74%synergy
Underground River
75%inclusion3 decks4 decks
41%synergy
Escape Tunnel
50%inclusion2 decks4 decks
49%synergy
Terramorphic Expanse
50%inclusion2 decks4 decks
34%synergy
Contaminated Landscape
50%inclusion2 decks4 decks
36%synergy
Skycloud Expanse
50%inclusion2 decks4 decks
35%synergy
Arcane Sanctum
50%inclusion2 decks4 decks
-4%synergy
Evolving Wilds
50%inclusion2 decks4 decks
25%synergy
Scoured Barrens
50%inclusion2 decks4 decks
44%synergy
Adarkar Wastes
50%inclusion2 decks4 decks
18%synergy
Obscura Storefront
50%inclusion2 decks4 decks
40%synergy
Temple of Silence
50%inclusion2 decks4 decks
31%synergy
Tainted Isle
25%inclusion1 decks4 decks
19%synergy
Glacial Fortress
25%inclusion1 decks4 decks
-17%synergy
Witch Enchanter
25%inclusion1 decks4 decks
18%synergy
Undercity Sewers
25%inclusion1 decks4 decks
10%synergy
Idyllic Beachfront
25%inclusion1 decks4 decks
21%synergy
Azorius Chancery
25%inclusion1 decks4 decks
11%synergy
Myriad Landscape
25%inclusion1 decks4 decks
17%synergy
Exotic Orchard
25%inclusion1 decks4 decks
-34%synergy
Temple of Deceit
25%inclusion1 decks4 decks
8%synergy
Mistvault Bridge
25%inclusion1 decks4 decks
18%synergy
Dimir Aqueduct
25%inclusion1 decks4 decks
12%synergy
Irrigated Farmland
25%inclusion1 decks4 decks
18%synergy
Fetid Heath
25%inclusion1 decks4 decks
12%synergy
Tainted Field
25%inclusion1 decks4 decks
18%synergy
Skybridge Towers
25%inclusion1 decks4 decks
24%synergy
Hydroelectric Specimen
25%inclusion1 decks4 decks
22%synergy
Tranquil Cove
25%inclusion1 decks4 decks
19%synergy
Thriving Isle
25%inclusion1 decks4 decks
21%synergy
Razortide Bridge
25%inclusion1 decks4 decks
18%synergy
Isolated Chapel
25%inclusion1 decks4 decks
-16%synergy
Temple of Enlightenment
25%inclusion1 decks4 decks
9%synergy
Sunlit Marsh
25%inclusion1 decks4 decks
20%synergy
Orzhov Basilica
25%inclusion1 decks4 decks
10%synergy
Opal Palace
25%inclusion1 decks4 decks
24%synergy
Azorius Guildgate
25%inclusion1 decks4 decks
23%synergy
Thriving Moor
25%inclusion1 decks4 decks
21%synergy
Meticulous Archive
25%inclusion1 decks4 decks
11%synergy
Thriving Heath
25%inclusion1 decks4 decks
21%synergy
Watery Grave
25%inclusion1 decks4 decks
-26%synergy
Capital City
25%inclusion1 decks4 decks
24%synergy
Treno, Dark City
25%inclusion1 decks4 decks
24%synergy
Sinister Hideout
25%inclusion1 decks4 decks
24%synergy
North Pole Gates
25%inclusion1 decks4 decks
25%synergy
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