The Master of Keys (Commander) - Budget Auras

The Master of Keys
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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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Mesa Enchantress
100%inclusion8 decks8 decks
91%synergy
Inquisitive Glimmer
88%inclusion7 decks8 decks
80%synergy
Starfield Mystic
75%inclusion6 decks8 decks
68%synergy
Mirrormade
75%inclusion6 decks8 decks
65%synergy
Cemetery Tampering
63%inclusion5 decks8 decks
62%synergy
Moon-Blessed Cleric
63%inclusion5 decks8 decks
58%synergy
Demon of Fate's Design
63%inclusion5 decks8 decks
57%synergy
Sevinne's Reclamation
63%inclusion5 decks8 decks
54%synergy
Invasion of Theros
50%inclusion4 decks8 decks
48%synergy
Resurgent Belief
50%inclusion4 decks8 decks
48%synergy
Top Cards
Sigil of the Empty Throne
50%inclusion4 decks8 decks
44%synergy
Mantle of the Ancients
50%inclusion4 decks8 decks
47%synergy
Copy Enchantment
50%inclusion4 decks8 decks
45%synergy
Swords to Plowshares
50%inclusion4 decks8 decks
-18%synergy
Sun Titan
50%inclusion4 decks8 decks
41%synergy
Doomwake Giant
50%inclusion4 decks8 decks
44%synergy
Secret Arcade // Dusty Parlor
50%inclusion4 decks8 decks
45%synergy
Entity Tracker
50%inclusion4 decks8 decks
44%synergy
Ondu Spiritdancer
50%inclusion4 decks8 decks
44%synergy
Ethereal Armor
50%inclusion4 decks8 decks
45%synergy
Creatures
Heliod's Pilgrim
38%inclusion3 decks8 decks
37%synergy
Scrabbling Skullcrab
38%inclusion3 decks8 decks
36%synergy
Gravebreaker Lamia
38%inclusion3 decks8 decks
37%synergy
Archon of Sun's Grace
38%inclusion3 decks8 decks
33%synergy
Fear of Impostors
38%inclusion3 decks8 decks
36%synergy
Victor, Valgavoth's Seneschal
38%inclusion3 decks8 decks
35%synergy
Fear of Sleep Paralysis
38%inclusion3 decks8 decks
32%synergy
Zur the Enchanter
38%inclusion3 decks8 decks
32%synergy
Fang, Fearless l'Cie
33%inclusion1 decks3 decks
33%synergy
Summon: Ixion
33%inclusion1 decks3 decks
33%synergy
Dreadwing Scavenger
29%inclusion2 decks7 decks
28%synergy
Ornithopter of Paradise
25%inclusion2 decks8 decks
18%synergy
Arna Kennerüd, Skycaptain
25%inclusion2 decks8 decks
23%synergy
Sage of Mysteries
25%inclusion2 decks8 decks
25%synergy
Sram, Senior Edificer
25%inclusion2 decks8 decks
20%synergy
Sovereigns of Lost Alara
25%inclusion2 decks8 decks
25%synergy
Alela, Artful Provocateur
25%inclusion2 decks8 decks
22%synergy
Creeping Peeper
25%inclusion2 decks8 decks
25%synergy
Auramancer
25%inclusion2 decks8 decks
22%synergy
Heliod, the Radiant Dawn
25%inclusion2 decks8 decks
21%synergy
Ghostly Dancers
25%inclusion2 decks8 decks
22%synergy
Killian, Ink Duelist
25%inclusion2 decks8 decks
23%synergy
Bruna, Light of Alabaster
25%inclusion2 decks8 decks
24%synergy
Metamorphosis Fanatic
13%inclusion1 decks8 decks
8%synergy
Optimistic Scavenger
13%inclusion1 decks8 decks
12%synergy
Stenn, Paranoid Partisan
13%inclusion1 decks8 decks
11%synergy
Angel of the Ruins
13%inclusion1 decks8 decks
6%synergy
Light-Paws, Emperor's Voice
13%inclusion1 decks8 decks
12%synergy
Rootwater Matriarch
13%inclusion1 decks8 decks
12%synergy
Skeleton Crew
13%inclusion1 decks8 decks
12%synergy
Kor Spiritdancer
13%inclusion1 decks8 decks
11%synergy
Overlord of the Floodpits
13%inclusion1 decks8 decks
9%synergy
Hanna, Ship's Navigator
13%inclusion1 decks8 decks
10%synergy
Doom Whisperer
13%inclusion1 decks8 decks
11%synergy
Soaring Lightbringer
13%inclusion1 decks8 decks
8%synergy
Silent Hallcreeper
13%inclusion1 decks8 decks
8%synergy
Tormod, the Desecrator
13%inclusion1 decks8 decks
11%synergy
Skullsnap Nuisance
13%inclusion1 decks8 decks
12%synergy
Athreos, Shroud-Veiled
13%inclusion1 decks8 decks
8%synergy
Pearl-Ear, Imperial Advisor
13%inclusion1 decks8 decks
11%synergy
Spirited Companion
13%inclusion1 decks8 decks
11%synergy
Enduring Curiosity
13%inclusion1 decks8 decks
5%synergy
Deranged Assistant
13%inclusion1 decks8 decks
12%synergy
Hateful Eidolon
13%inclusion1 decks8 decks
11%synergy
Nashi, Searcher in the Dark
13%inclusion1 decks8 decks
12%synergy
Tameshi, Reality Architect
13%inclusion1 decks8 decks
12%synergy
Aminatou, Veil Piercer
13%inclusion1 decks8 decks
11%synergy
Grim Guardian
13%inclusion1 decks8 decks
10%synergy
Alseid of Life's Bounty
13%inclusion1 decks8 decks
11%synergy
Clever Impersonator
13%inclusion1 decks8 decks
11%synergy
Instants
Frantic Search
38%inclusion3 decks8 decks
20%synergy
Thirst for Meaning
38%inclusion3 decks8 decks
36%synergy
Otherworldly Gaze
38%inclusion3 decks8 decks
35%synergy
Counterspell
38%inclusion3 decks8 decks
-4%synergy
Path to Exile
38%inclusion3 decks8 decks
-5%synergy
An Offer You Can't Refuse
25%inclusion2 decks8 decks
-2%synergy
Void Rend
25%inclusion2 decks8 decks
-9%synergy
Arcane Denial
25%inclusion2 decks8 decks
5%synergy
Wrong Turn
25%inclusion2 decks8 decks
25%synergy
Spectral Interference
20%inclusion1 decks5 decks
20%synergy
Uncharted Voyage
14%inclusion1 decks7 decks
14%synergy
Refute
14%inclusion1 decks7 decks
12%synergy
Muddle the Mixture
13%inclusion1 decks8 decks
8%synergy
Drown in the Loch
13%inclusion1 decks8 decks
10%synergy
Disdainful Stroke
13%inclusion1 decks8 decks
12%synergy
Dovin's Veto
13%inclusion1 decks8 decks
-12%synergy
Thirst for Discovery
13%inclusion1 decks8 decks
12%synergy
Faith's Reward
13%inclusion1 decks8 decks
12%synergy
Illusionist's Gambit
13%inclusion1 decks8 decks
12%synergy
Brainstorm
13%inclusion1 decks8 decks
-5%synergy
Confounding Riddle
13%inclusion1 decks8 decks
12%synergy
Turn Aside
13%inclusion1 decks8 decks
12%synergy
Fact or Fiction
13%inclusion1 decks8 decks
9%synergy
Bovine Intervention
13%inclusion1 decks8 decks
12%synergy
Ertai's Scorn
13%inclusion1 decks8 decks
12%synergy
Aetherize
13%inclusion1 decks8 decks
9%synergy
Cancel
13%inclusion1 decks8 decks
11%synergy
Jwari Disruption
13%inclusion1 decks8 decks
12%synergy
Hindering Light
13%inclusion1 decks8 decks
11%synergy
Cackling Counterpart
13%inclusion1 decks8 decks
12%synergy
Lazotep Plating
13%inclusion1 decks8 decks
11%synergy
Despark
13%inclusion1 decks8 decks
-4%synergy
Mana Leak
13%inclusion1 decks8 decks
11%synergy
Utter End
13%inclusion1 decks8 decks
6%synergy
Fumble
13%inclusion1 decks8 decks
12%synergy
Inkshield
13%inclusion1 decks8 decks
3%synergy
Unwind
13%inclusion1 decks8 decks
7%synergy
Don't Make a Sound
13%inclusion1 decks8 decks
12%synergy
Rebuff the Wicked
13%inclusion1 decks8 decks
12%synergy
Think Twice
13%inclusion1 decks8 decks
12%synergy
Generous Gift
13%inclusion1 decks8 decks
-2%synergy
Evacuation
13%inclusion1 decks8 decks
12%synergy
Sorceries
Time Wipe
38%inclusion3 decks8 decks
30%synergy
Austere Command
25%inclusion2 decks8 decks
16%synergy
Open the Armory
25%inclusion2 decks8 decks
22%synergy
Extinguish All Hope
25%inclusion2 decks8 decks
23%synergy
Redress Fate
25%inclusion2 decks8 decks
19%synergy
Ponder
13%inclusion1 decks8 decks
3%synergy
Supreme Verdict
13%inclusion1 decks8 decks
-2%synergy
Diabolic Tutor
13%inclusion1 decks8 decks
8%synergy
Jailbreak
13%inclusion1 decks8 decks
12%synergy
Cut Your Losses
13%inclusion1 decks8 decks
12%synergy
Read the Bones
13%inclusion1 decks8 decks
8%synergy
Cleansing Meditation
13%inclusion1 decks8 decks
12%synergy
Lórien Revealed
13%inclusion1 decks8 decks
10%synergy
Starfall Invocation
13%inclusion1 decks8 decks
10%synergy
Unfinished Business
13%inclusion1 decks8 decks
12%synergy
Vanquish the Horde
13%inclusion1 decks8 decks
10%synergy
Winds of Rath
13%inclusion1 decks8 decks
10%synergy
Retether
13%inclusion1 decks8 decks
11%synergy
Final Vengeance
13%inclusion1 decks8 decks
12%synergy
Compulsive Research
13%inclusion1 decks8 decks
12%synergy
Emerge from the Cocoon
13%inclusion1 decks8 decks
12%synergy
Utility Artifacts
Swiftfoot Boots
38%inclusion3 decks8 decks
14%synergy
Matzalantli, the Great Door
13%inclusion1 decks8 decks
10%synergy
Perpetual Timepiece
13%inclusion1 decks8 decks
12%synergy
Wayfarer's Bauble
13%inclusion1 decks8 decks
4%synergy
Bident of Thassa
13%inclusion1 decks8 decks
4%synergy
Enchantments
Chorale of the Void
50%inclusion1 decks2 decks
50%synergy
Darksteel Mutation
38%inclusion3 decks8 decks
31%synergy
Grasp of Fate
38%inclusion3 decks8 decks
31%synergy
Aqueous Form
38%inclusion3 decks8 decks
34%synergy
Imprisoned in the Moon
38%inclusion3 decks8 decks
31%synergy
Estrid's Invocation
38%inclusion3 decks8 decks
33%synergy
Timely Ward
38%inclusion3 decks8 decks
33%synergy
Sphere of Safety
38%inclusion3 decks8 decks
28%synergy
The Tale of Tamiyo
38%inclusion3 decks8 decks
37%synergy
All That Glitters
38%inclusion3 decks8 decks
29%synergy
Witness Protection
38%inclusion3 decks8 decks
36%synergy
Curator's Ward
38%inclusion3 decks8 decks
35%synergy
Monologue Tax
38%inclusion3 decks8 decks
31%synergy
Animate Dead
38%inclusion3 decks8 decks
28%synergy
Public Enemy
38%inclusion3 decks8 decks
37%synergy
Sheltered by Ghosts
38%inclusion3 decks8 decks
35%synergy
Daybreak Coronet
25%inclusion2 decks8 decks
24%synergy
Cramped Vents // Access Maze
25%inclusion2 decks8 decks
22%synergy
Ripples of Undeath
25%inclusion2 decks8 decks
22%synergy
Curse of Silence
25%inclusion2 decks8 decks
25%synergy
Extravagant Replication
25%inclusion2 decks8 decks
20%synergy
Chains of Custody
25%inclusion2 decks8 decks
24%synergy
Surgical Suite // Hospital Room
25%inclusion2 decks8 decks
25%synergy
Phyresis
25%inclusion2 decks8 decks
23%synergy
Amphibian Downpour
25%inclusion2 decks8 decks
20%synergy
Seal of Cleansing
25%inclusion2 decks8 decks
23%synergy
Restricted Office // Lecture Hall
25%inclusion2 decks8 decks
23%synergy
Secrets of the Dead
25%inclusion2 decks8 decks
25%synergy
Sage's Reverie
25%inclusion2 decks8 decks
23%synergy
Curse of Verbosity
25%inclusion2 decks8 decks
24%synergy
Oubliette
25%inclusion2 decks8 decks
23%synergy
Ossification
25%inclusion2 decks8 decks
25%synergy
Propaganda
25%inclusion2 decks8 decks
-2%synergy
Phyrexian Arena
25%inclusion2 decks8 decks
11%synergy
Seal of Removal
25%inclusion2 decks8 decks
24%synergy
Combat Research
25%inclusion2 decks8 decks
22%synergy
Lightwheel Enhancements
20%inclusion1 decks5 decks
20%synergy
Twinblade Blessing
14%inclusion1 decks7 decks
14%synergy
Chamber of Manipulation
13%inclusion1 decks8 decks
12%synergy
Endless Evil
13%inclusion1 decks8 decks
12%synergy
Staggering Insight
13%inclusion1 decks8 decks
10%synergy
Aether Tunnel
13%inclusion1 decks8 decks
12%synergy
Builder's Talent
13%inclusion1 decks8 decks
12%synergy
Curse of the Restless Dead
13%inclusion1 decks8 decks
12%synergy
Overwhelming Splendor
13%inclusion1 decks8 decks
12%synergy
Sugar Coat
13%inclusion1 decks8 decks
12%synergy
Cacophony Unleashed
13%inclusion1 decks8 decks
11%synergy
Trapped in the Screen
13%inclusion1 decks8 decks
12%synergy
Curiosity
13%inclusion1 decks8 decks
5%synergy
Monastery Siege
13%inclusion1 decks8 decks
11%synergy
Utility Lands
Bojuka Bog
63%inclusion5 decks8 decks
35%synergy
Hall of Heliod's Generosity
38%inclusion3 decks8 decks
24%synergy
Halimar Depths
25%inclusion2 decks8 decks
20%synergy
Drownyard Temple
13%inclusion1 decks8 decks
12%synergy
Cephalid Coliseum
13%inclusion1 decks8 decks
9%synergy
Temple of the False God
13%inclusion1 decks8 decks
5%synergy
Vault of the Archangel
13%inclusion1 decks8 decks
6%synergy
Rogue's Passage
13%inclusion1 decks8 decks
3%synergy
Mana Artifacts
Arcane Signet
100%inclusion8 decks8 decks
12%synergy
Sol Ring
100%inclusion8 decks8 decks
10%synergy
Azorius Signet
88%inclusion7 decks8 decks
55%synergy
Talisman of Dominance
75%inclusion6 decks8 decks
26%synergy
Orzhov Signet
75%inclusion6 decks8 decks
41%synergy
Talisman of Progress
63%inclusion5 decks8 decks
19%synergy
Dimir Signet
63%inclusion5 decks8 decks
30%synergy
Commander's Sphere
50%inclusion4 decks8 decks
31%synergy
Fellwar Stone
50%inclusion4 decks8 decks
16%synergy
Talisman of Hierarchy
50%inclusion4 decks8 decks
7%synergy
Mind Stone
38%inclusion3 decks8 decks
25%synergy
Lands
Command Tower
100%inclusion8 decks8 decks
8%synergy
Swamp
100%inclusion8 decks8 decks
9%synergy
Island
100%inclusion8 decks8 decks
7%synergy
Plains
100%inclusion8 decks8 decks
9%synergy
Caves of Koilos
75%inclusion6 decks8 decks
40%synergy
Arcane Sanctum
75%inclusion6 decks8 decks
21%synergy
Underground River
75%inclusion6 decks8 decks
42%synergy
Exotic Orchard
63%inclusion5 decks8 decks
4%synergy
Contaminated Landscape
63%inclusion5 decks8 decks
48%synergy
Temple of Deceit
63%inclusion5 decks8 decks
44%synergy
Evolving Wilds
63%inclusion5 decks8 decks
37%synergy
Adarkar Wastes
63%inclusion5 decks8 decks
32%synergy
Obscura Storefront
63%inclusion5 decks8 decks
52%synergy
Terramorphic Expanse
50%inclusion4 decks8 decks
33%synergy
Temple of Enlightenment
50%inclusion4 decks8 decks
33%synergy
Temple of Silence
50%inclusion4 decks8 decks
30%synergy
Tainted Isle
38%inclusion3 decks8 decks
31%synergy
Glacial Fortress
38%inclusion3 decks8 decks
-3%synergy
Dimir Aqueduct
38%inclusion3 decks8 decks
24%synergy
Tainted Field
38%inclusion3 decks8 decks
30%synergy
Prairie Stream
38%inclusion3 decks8 decks
-3%synergy
Valgavoth's Lair
38%inclusion3 decks8 decks
35%synergy
Isolated Chapel
38%inclusion3 decks8 decks
-1%synergy
Orzhov Basilica
38%inclusion3 decks8 decks
22%synergy
Azorius Chancery
25%inclusion2 decks8 decks
11%synergy
Concealed Courtyard
25%inclusion2 decks8 decks
21%synergy
Fetid Heath
25%inclusion2 decks8 decks
13%synergy
Darkwater Catacombs
25%inclusion2 decks8 decks
11%synergy
Ash Barrens
25%inclusion2 decks8 decks
14%synergy
Thriving Isle
25%inclusion2 decks8 decks
20%synergy
Skycloud Expanse
25%inclusion2 decks8 decks
10%synergy
Drowned Catacomb
25%inclusion2 decks8 decks
-11%synergy
Darkslick Shores
25%inclusion2 decks8 decks
21%synergy
Path of Ancestry
25%inclusion2 decks8 decks
-2%synergy
Thriving Moor
25%inclusion2 decks8 decks
21%synergy
Sunken Hollow
25%inclusion2 decks8 decks
-15%synergy
Thriving Heath
25%inclusion2 decks8 decks
21%synergy
Idyllic Beachfront
13%inclusion1 decks8 decks
9%synergy
Desolate Mire
13%inclusion1 decks8 decks
6%synergy
Port Town
13%inclusion1 decks8 decks
-4%synergy
Glacial Floodplain
13%inclusion1 decks8 decks
11%synergy
Tranquil Cove
13%inclusion1 decks8 decks
6%synergy
Raffine's Tower
13%inclusion1 decks8 decks
-29%synergy
Dismal Backwater
13%inclusion1 decks8 decks
6%synergy
Jwari Disruption
13%inclusion1 decks8 decks
12%synergy
Scoured Barrens
13%inclusion1 decks8 decks
6%synergy
Choked Estuary
13%inclusion1 decks8 decks
-4%synergy
Dromar's Cavern
13%inclusion1 decks8 decks
10%synergy
Mystic Gate
13%inclusion1 decks8 decks
7%synergy
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