The Master of Keys (Commander) - Budget Mill

The Master of Keys
Rank #315
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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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Waterbender Ascension
20%inclusion1 decks5 decks
19%synergy
Airbender Ascension
14%inclusion1 decks7 decks
14%synergy
High Synergy Cards
Inquisitive Glimmer
89%inclusion24 decks27 decks
81%synergy
Scrabbling Skullcrab
81%inclusion22 decks27 decks
80%synergy
Starfield Mystic
78%inclusion21 decks27 decks
71%synergy
Doomwake Giant
74%inclusion20 decks27 decks
68%synergy
Mesa Enchantress
70%inclusion19 decks27 decks
61%synergy
Victor, Valgavoth's Seneschal
63%inclusion17 decks27 decks
61%synergy
Fear of Impostors
59%inclusion16 decks27 decks
58%synergy
Defiled Crypt // Cadaver Lab
56%inclusion15 decks27 decks
55%synergy
Cemetery Tampering
52%inclusion14 decks27 decks
51%synergy
Demon of Fate's Design
56%inclusion15 decks27 decks
50%synergy
Top Cards
Sigil of the Empty Throne
56%inclusion15 decks27 decks
50%synergy
Entity Tracker
56%inclusion15 decks27 decks
49%synergy
Fear of Sleep Paralysis
52%inclusion14 decks27 decks
46%synergy
Swords to Plowshares
52%inclusion14 decks27 decks
-16%synergy
Heliod, the Radiant Dawn
52%inclusion14 decks27 decks
48%synergy
Sphere of Safety
48%inclusion13 decks27 decks
39%synergy
The Tale of Tamiyo
48%inclusion13 decks27 decks
48%synergy
Secret Arcade // Dusty Parlor
48%inclusion13 decks27 decks
43%synergy
Soaring Lightbringer
44%inclusion12 decks27 decks
39%synergy
Seal of Cleansing
44%inclusion12 decks27 decks
43%synergy
Creatures
Ghostly Dancers
44%inclusion12 decks27 decks
42%synergy
Aminatou, Veil Piercer
41%inclusion11 decks27 decks
39%synergy
Gravebreaker Lamia
37%inclusion10 decks27 decks
36%synergy
Sage of Mysteries
37%inclusion10 decks27 decks
37%synergy
Ondu Spiritdancer
37%inclusion10 decks27 decks
31%synergy
Archon of Sun's Grace
33%inclusion9 decks27 decks
29%synergy
Moon-Blessed Cleric
33%inclusion9 decks27 decks
29%synergy
Skullsnap Nuisance
33%inclusion9 decks27 decks
33%synergy
Archetype of Imagination
33%inclusion9 decks27 decks
29%synergy
Overlord of the Floodpits
26%inclusion7 decks27 decks
22%synergy
Silent Hallcreeper
26%inclusion7 decks27 decks
22%synergy
Spirited Companion
26%inclusion7 decks27 decks
24%synergy
Alseid of Life's Bounty
26%inclusion7 decks27 decks
24%synergy
Enduring Curiosity
22%inclusion6 decks27 decks
15%synergy
Balemurk Leech
22%inclusion6 decks27 decks
22%synergy
Grim Guardian
22%inclusion6 decks27 decks
20%synergy
Gremlin Tamer
19%inclusion5 decks27 decks
17%synergy
Creeping Peeper
19%inclusion5 decks27 decks
18%synergy
Nashi, Searcher in the Dark
19%inclusion5 decks27 decks
18%synergy
Nightmare Shepherd
19%inclusion5 decks27 decks
16%synergy
Auramancer
19%inclusion5 decks27 decks
15%synergy
Abdel Adrian, Gorion's Ward
19%inclusion5 decks27 decks
17%synergy
Zur, Eternal Schemer
19%inclusion5 decks27 decks
15%synergy
Mindwrack Harpy
19%inclusion5 decks27 decks
18%synergy
Solemn Simulacrum
15%inclusion4 decks27 decks
0%synergy
Starnheim Courser
15%inclusion4 decks27 decks
11%synergy
Agent of Erebos
15%inclusion4 decks27 decks
14%synergy
Overlord of the Balemurk
15%inclusion4 decks27 decks
13%synergy
Ashiok's Reaper
15%inclusion4 decks27 decks
14%synergy
Athreos, Shroud-Veiled
15%inclusion4 decks27 decks
10%synergy
Ancient Cellarspawn
15%inclusion4 decks27 decks
11%synergy
Zur the Enchanter
15%inclusion4 decks27 decks
10%synergy
Lotho, Corrupt Shirriff
11%inclusion3 decks27 decks
-6%synergy
The Ancient One
11%inclusion3 decks27 decks
11%synergy
Vega, the Watcher
11%inclusion3 decks27 decks
9%synergy
Arvinox, the Mind Flail
11%inclusion3 decks27 decks
9%synergy
Underworld Coinsmith
11%inclusion3 decks27 decks
10%synergy
Thassa's Devourer
11%inclusion3 decks27 decks
11%synergy
Millikin
11%inclusion3 decks27 decks
11%synergy
Callaphe, Beloved of the Sea
11%inclusion3 decks27 decks
10%synergy
Neerdiv, Devious Diver
8.7%inclusion2 decks23 decks
9%synergy
Dreadwing Scavenger
8.7%inclusion2 decks23 decks
8%synergy
Metamorphosis Fanatic
7.4%inclusion2 decks27 decks
3%synergy
Optimistic Scavenger
7.4%inclusion2 decks27 decks
7%synergy
Fear of Infinity
7.4%inclusion2 decks27 decks
7%synergy
Stenn, Paranoid Partisan
7.4%inclusion2 decks27 decks
6%synergy
Syr Konrad, the Grim
7.4%inclusion2 decks27 decks
1%synergy
The Mindskinner
7.4%inclusion2 decks27 decks
7%synergy
Fear of Failed Tests
7.4%inclusion2 decks27 decks
7%synergy
Valley Floodcaller
7.4%inclusion2 decks27 decks
3%synergy
Instants
Otherworldly Gaze
41%inclusion11 decks27 decks
38%synergy
Counterspell
41%inclusion11 decks27 decks
0%synergy
Thirst for Meaning
37%inclusion10 decks27 decks
36%synergy
Arcane Denial
30%inclusion8 decks27 decks
9%synergy
Path to Exile
26%inclusion7 decks27 decks
-16%synergy
Frantic Search
22%inclusion6 decks27 decks
5%synergy
Negate
22%inclusion6 decks27 decks
6%synergy
Dovin's Veto
19%inclusion5 decks27 decks
-6%synergy
Return to Dust
19%inclusion5 decks27 decks
15%synergy
Fact or Fiction
19%inclusion5 decks27 decks
15%synergy
Utter End
19%inclusion5 decks27 decks
11%synergy
An Offer You Can't Refuse
15%inclusion4 decks27 decks
-12%synergy
Telling Time
11%inclusion3 decks27 decks
9%synergy
Brainstorm
11%inclusion3 decks27 decks
-6%synergy
Void Rend
11%inclusion3 decks27 decks
-22%synergy
Inkshield
11%inclusion3 decks27 decks
2%synergy
Dark Ritual
7.4%inclusion2 decks27 decks
-12%synergy
Forbidden Alchemy
7.4%inclusion2 decks27 decks
7%synergy
Delay
7.4%inclusion2 decks27 decks
5%synergy
Disenchant
7.4%inclusion2 decks27 decks
6%synergy
Anguished Unmaking
7.4%inclusion2 decks27 decks
-17%synergy
Get Out
7.4%inclusion2 decks27 decks
7%synergy
Faithful Mending
7.4%inclusion2 decks27 decks
3%synergy
Waterlogged Teachings
7.4%inclusion2 decks27 decks
3%synergy
Ice Out
7.4%inclusion2 decks27 decks
7%synergy
Restoration Magic
6.7%inclusion1 decks15 decks
5%synergy
Swallowed by Leviathan
6.7%inclusion1 decks15 decks
6%synergy
Dreams of Laguna
5.9%inclusion1 decks17 decks
6%synergy
Sorceries
Redress Fate
44%inclusion12 decks27 decks
38%synergy
Sevinne's Reclamation
33%inclusion9 decks27 decks
25%synergy
Extinguish All Hope
33%inclusion9 decks27 decks
32%synergy
Singularity Rupture
23%inclusion3 decks13 decks
21%synergy
Dance of the Manse
22%inclusion6 decks27 decks
19%synergy
Demonic Counsel
19%inclusion5 decks27 decks
17%synergy
Space-Time Anomaly
15%inclusion2 decks13 decks
14%synergy
Commune with Evil
15%inclusion4 decks27 decks
15%synergy
Windfall
15%inclusion4 decks27 decks
1%synergy
Time Wipe
15%inclusion4 decks27 decks
8%synergy
Ponder
11%inclusion3 decks27 decks
2%synergy
Resurgent Belief
11%inclusion3 decks27 decks
9%synergy
Terminus
11%inclusion3 decks27 decks
7%synergy
Glimpse the Unthinkable
11%inclusion3 decks27 decks
11%synergy
Diabolic Vision
11%inclusion3 decks27 decks
9%synergy
Austere Command
7.4%inclusion2 decks27 decks
-2%synergy
Lively Dirge
7.4%inclusion2 decks27 decks
6%synergy
Triumphant Reckoning
7.4%inclusion2 decks27 decks
7%synergy
Wrath of God
7.4%inclusion2 decks27 decks
3%synergy
Night's Whisper
7.4%inclusion2 decks27 decks
5%synergy
Buried Alive
7.4%inclusion2 decks27 decks
3%synergy
Brilliant Restoration
7.4%inclusion2 decks27 decks
5%synergy
Rite of Oblivion
7.4%inclusion2 decks27 decks
7%synergy
Living Death
7.4%inclusion2 decks27 decks
3%synergy
Toxic Deluge
7.4%inclusion2 decks27 decks
-12%synergy
Aminatou's Augury
7.4%inclusion2 decks27 decks
6%synergy
Final Vengeance
7.4%inclusion2 decks27 decks
7%synergy
Day of Judgment
7.4%inclusion2 decks27 decks
6%synergy
Unburial Rites
7.4%inclusion2 decks27 decks
4%synergy
Traumatize
7.4%inclusion2 decks27 decks
7%synergy
Utility Artifacts
Keys to the House
22%inclusion6 decks27 decks
22%synergy
Brainstone
11%inclusion3 decks27 decks
10%synergy
Enchantments
Seal of Removal
44%inclusion12 decks27 decks
44%synergy
Grasp of Fate
41%inclusion11 decks27 decks
35%synergy
Ripples of Undeath
41%inclusion11 decks27 decks
38%synergy
Dress Down
41%inclusion11 decks27 decks
38%synergy
Shark Typhoon
37%inclusion10 decks27 decks
31%synergy
Propaganda
37%inclusion10 decks27 decks
11%synergy
Extravagant Replication
33%inclusion9 decks27 decks
28%synergy
Mirrormade
33%inclusion9 decks27 decks
23%synergy
Stillness in Motion
30%inclusion6 decks20 decks
30%synergy
Seal of Doom
30%inclusion8 decks27 decks
29%synergy
Amphibian Downpour
30%inclusion8 decks27 decks
25%synergy
Imprisoned in the Moon
26%inclusion7 decks27 decks
19%synergy
The Eldest Reborn
26%inclusion7 decks27 decks
23%synergy
Central Elevator // Promising Stairs
26%inclusion7 decks27 decks
25%synergy
All That Glitters
26%inclusion7 decks27 decks
17%synergy
Monologue Tax
26%inclusion7 decks27 decks
20%synergy
Restricted Office // Lecture Hall
26%inclusion7 decks27 decks
24%synergy
Secrets of the Dead
26%inclusion7 decks27 decks
26%synergy
Bottomless Pool // Locker Room
26%inclusion7 decks27 decks
24%synergy
Ethereal Armor
26%inclusion7 decks27 decks
21%synergy
Derelict Attic // Widow's Walk
23%inclusion6 decks26 decks
23%synergy
Darksteel Mutation
22%inclusion6 decks27 decks
16%synergy
Cacophony Unleashed
22%inclusion6 decks27 decks
20%synergy
Underwater Tunnel // Slimy Aquarium
22%inclusion6 decks27 decks
22%synergy
Surgical Suite // Hospital Room
22%inclusion6 decks27 decks
22%synergy
Estrid's Invocation
22%inclusion6 decks27 decks
18%synergy
Nowhere to Run
22%inclusion6 decks27 decks
21%synergy
Phyrexian Arena
22%inclusion6 decks27 decks
8%synergy
Founding the Third Path
19%inclusion5 decks27 decks
18%synergy
Cramped Vents // Access Maze
19%inclusion5 decks27 decks
16%synergy
Hopeless Nightmare
19%inclusion5 decks27 decks
18%synergy
Mystic Remora
19%inclusion5 decks27 decks
-3%synergy
Timely Ward
19%inclusion5 decks27 decks
14%synergy
Witness Protection
19%inclusion5 decks27 decks
17%synergy
Static Prison
19%inclusion5 decks27 decks
18%synergy
Animate Dead
19%inclusion5 decks27 decks
9%synergy
Polluted Cistern // Dim Oubliette
19%inclusion5 decks27 decks
18%synergy
Mirror Room // Fractured Realm
19%inclusion5 decks27 decks
16%synergy
Meat Locker // Drowned Diner
15%inclusion4 decks26 decks
15%synergy
Trapped in the Screen
15%inclusion4 decks27 decks
14%synergy
Court of Cunning
15%inclusion4 decks27 decks
14%synergy
Unable to Scream
15%inclusion4 decks27 decks
14%synergy
Tinybones Joins Up
15%inclusion4 decks27 decks
14%synergy
Touch the Spirit Realm
15%inclusion4 decks27 decks
12%synergy
Necromancy
15%inclusion4 decks27 decks
10%synergy
The Restoration of Eiganjo
15%inclusion4 decks27 decks
14%synergy
Eaten by Piranhas
15%inclusion4 decks27 decks
13%synergy
Dazzling Theater // Prop Room
15%inclusion4 decks27 decks
13%synergy
Ghostly Prison
15%inclusion4 decks27 decks
-7%synergy
Search for Azcanta
15%inclusion4 decks27 decks
14%synergy
Battles
Invasion of Theros
15%inclusion4 decks27 decks
13%synergy
Utility Lands
Bojuka Bog
56%inclusion15 decks27 decks
28%synergy
Hall of Heliod's Generosity
37%inclusion10 decks27 decks
24%synergy
Halimar Depths
19%inclusion5 decks27 decks
14%synergy
Cephalid Coliseum
15%inclusion4 decks27 decks
11%synergy
Nephalia Drownyard
11%inclusion3 decks27 decks
11%synergy
Drownyard Temple
11%inclusion3 decks27 decks
11%synergy
Restless Anchorage
7.4%inclusion2 decks27 decks
6%synergy
Reliquary Tower
7.4%inclusion2 decks27 decks
-26%synergy
Dalkovan Encampment
5.0%inclusion1 decks20 decks
5%synergy
Mana Artifacts
Sol Ring
89%inclusion24 decks27 decks
-1%synergy
Arcane Signet
85%inclusion23 decks27 decks
-3%synergy
Orzhov Signet
74%inclusion20 decks27 decks
39%synergy
Azorius Signet
67%inclusion18 decks27 decks
34%synergy
Talisman of Progress
48%inclusion13 decks27 decks
5%synergy
Dimir Signet
41%inclusion11 decks27 decks
8%synergy
Talisman of Dominance
37%inclusion10 decks27 decks
-12%synergy
Talisman of Hierarchy
33%inclusion9 decks27 decks
-10%synergy
Commander's Sphere
30%inclusion8 decks27 decks
10%synergy
Fellwar Stone
26%inclusion7 decks27 decks
-8%synergy
Mind Stone
22%inclusion6 decks27 decks
9%synergy
Charcoal Diamond
7.4%inclusion2 decks27 decks
6%synergy
Sky Diamond
7.4%inclusion2 decks27 decks
6%synergy
Marble Diamond
7.4%inclusion2 decks27 decks
6%synergy
Lands
Swamp
100%inclusion27 decks27 decks
9%synergy
Island
100%inclusion27 decks27 decks
7%synergy
Plains
100%inclusion27 decks27 decks
9%synergy
Command Tower
96%inclusion26 decks27 decks
4%synergy
Arcane Sanctum
85%inclusion23 decks27 decks
31%synergy
Temple of Enlightenment
67%inclusion18 decks27 decks
50%synergy
Adarkar Wastes
67%inclusion18 decks27 decks
36%synergy
Temple of Silence
67%inclusion18 decks27 decks
47%synergy
Exotic Orchard
63%inclusion17 decks27 decks
4%synergy
Temple of Deceit
63%inclusion17 decks27 decks
45%synergy
Caves of Koilos
63%inclusion17 decks27 decks
28%synergy
Evolving Wilds
56%inclusion15 decks27 decks
30%synergy
Underground River
52%inclusion14 decks27 decks
20%synergy
Terramorphic Expanse
48%inclusion13 decks27 decks
31%synergy
Prairie Stream
48%inclusion13 decks27 decks
8%synergy
Isolated Chapel
44%inclusion12 decks27 decks
6%synergy
Glacial Fortress
41%inclusion11 decks27 decks
1%synergy
Azorius Chancery
41%inclusion11 decks27 decks
26%synergy
Sunken Hollow
41%inclusion11 decks27 decks
1%synergy
Contaminated Landscape
37%inclusion10 decks27 decks
22%synergy
Dimir Aqueduct
37%inclusion10 decks27 decks
23%synergy
Ash Barrens
37%inclusion10 decks27 decks
26%synergy
Valgavoth's Lair
37%inclusion10 decks27 decks
34%synergy
Orzhov Basilica
37%inclusion10 decks27 decks
21%synergy
Tainted Field
33%inclusion9 decks27 decks
26%synergy
Obscura Storefront
33%inclusion9 decks27 decks
23%synergy
Drowned Catacomb
30%inclusion8 decks27 decks
-6%synergy
Tainted Isle
26%inclusion7 decks27 decks
20%synergy
Thriving Isle
26%inclusion7 decks27 decks
21%synergy
Shineshadow Snarl
26%inclusion7 decks27 decks
16%synergy
Darkwater Catacombs
22%inclusion6 decks27 decks
8%synergy
Path of Ancestry
22%inclusion6 decks27 decks
-5%synergy
Thriving Heath
22%inclusion6 decks27 decks
18%synergy
Irrigated Farmland
19%inclusion5 decks27 decks
11%synergy
Skycloud Expanse
19%inclusion5 decks27 decks
4%synergy
Thriving Moor
19%inclusion5 decks27 decks
14%synergy
Myriad Landscape
15%inclusion4 decks27 decks
6%synergy
Port Town
15%inclusion4 decks27 decks
-2%synergy
Desolate Mire
11%inclusion3 decks27 decks
5%synergy
Fetid Heath
11%inclusion3 decks27 decks
0%synergy
Choked Estuary
11%inclusion3 decks27 decks
-5%synergy
Idyllic Beachfront
7.4%inclusion2 decks27 decks
4%synergy
Fetid Pools
7.4%inclusion2 decks27 decks
1%synergy
Glasswing Grace
7.4%inclusion2 decks27 decks
5%synergy
River of Tears
7.4%inclusion2 decks27 decks
5%synergy
Demolition Field
7.4%inclusion2 decks27 decks
4%synergy
Sunlit Marsh
7.4%inclusion2 decks27 decks
3%synergy
Waterlogged Teachings
7.4%inclusion2 decks27 decks
3%synergy
Mystic Gate
7.4%inclusion2 decks27 decks
2%synergy
Deserted Beach
7.4%inclusion2 decks27 decks
-13%synergy
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