The Master of Keys (Commander) - Budget Mill

The Master of Keys
Rank #300
31decks
As CommanderAs CardAverage DeckDecksView Precon
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Budget
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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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Killian, Decisive Mentor
9.1%inclusion1 decks11 decks
9%synergy
Dimensional Exile
9.1%inclusion1 decks11 decks
9%synergy
Retro-Mutation
9.1%inclusion1 decks11 decks
9%synergy
Kitsune's Technique
7.7%inclusion1 decks13 decks
7%synergy
High Synergy Cards
Inquisitive Glimmer
94%inclusion29 decks31 decks
86%synergy
Scrabbling Skullcrab
71%inclusion22 decks31 decks
70%synergy
Victor, Valgavoth's Seneschal
65%inclusion20 decks31 decks
63%synergy
Starfield Mystic
68%inclusion21 decks31 decks
61%synergy
Fear of Impostors
61%inclusion19 decks31 decks
60%synergy
Mesa Enchantress
68%inclusion21 decks31 decks
59%synergy
Doomwake Giant
61%inclusion19 decks31 decks
55%synergy
Entity Tracker
61%inclusion19 decks31 decks
55%synergy
Cemetery Tampering
55%inclusion17 decks31 decks
54%synergy
The Tale of Tamiyo
52%inclusion16 decks31 decks
51%synergy
Top Cards
Demon of Fate's Design
52%inclusion16 decks31 decks
46%synergy
Fear of Sleep Paralysis
48%inclusion15 decks31 decks
43%synergy
Seal of Cleansing
48%inclusion15 decks31 decks
47%synergy
Singularity Rupture
48%inclusion10 decks21 decks
45%synergy
Sigil of the Empty Throne
45%inclusion14 decks31 decks
39%synergy
Defiled Crypt // Cadaver Lab
45%inclusion14 decks31 decks
44%synergy
Ghostly Dancers
42%inclusion13 decks31 decks
39%synergy
Grasp of Fate
39%inclusion12 decks31 decks
33%synergy
Gravebreaker Lamia
39%inclusion12 decks31 decks
38%synergy
Skullsnap Nuisance
39%inclusion12 decks31 decks
38%synergy
Creatures
Sage of Mysteries
32%inclusion10 decks31 decks
32%synergy
Aminatou, Veil Piercer
32%inclusion10 decks31 decks
31%synergy
Soaring Lightbringer
29%inclusion9 decks31 decks
24%synergy
Heliod, the Radiant Dawn
29%inclusion9 decks31 decks
25%synergy
Ondu Spiritdancer
29%inclusion9 decks31 decks
23%synergy
Archon of Sun's Grace
26%inclusion8 decks31 decks
21%synergy
Balemurk Leech
26%inclusion8 decks31 decks
25%synergy
Grim Guardian
26%inclusion8 decks31 decks
23%synergy
Mindwrack Harpy
26%inclusion8 decks31 decks
25%synergy
Overlord of the Floodpits
23%inclusion7 decks31 decks
19%synergy
Spirited Companion
23%inclusion7 decks31 decks
21%synergy
Creeping Peeper
23%inclusion7 decks31 decks
22%synergy
Starnheim Courser
19%inclusion6 decks31 decks
16%synergy
Silent Hallcreeper
19%inclusion6 decks31 decks
15%synergy
Moon-Blessed Cleric
19%inclusion6 decks31 decks
15%synergy
Gremlin Tamer
19%inclusion6 decks31 decks
18%synergy
Archetype of Imagination
19%inclusion6 decks31 decks
15%synergy
Nashi, Searcher in the Dark
19%inclusion6 decks31 decks
19%synergy
Zur, Eternal Schemer
19%inclusion6 decks31 decks
16%synergy
Millikin
19%inclusion6 decks31 decks
19%synergy
Fear of Surveillance
16%inclusion5 decks31 decks
16%synergy
Overlord of the Balemurk
16%inclusion5 decks31 decks
14%synergy
The Ancient One
16%inclusion5 decks31 decks
16%synergy
Ashiok's Reaper
16%inclusion5 decks31 decks
16%synergy
Nightmare Shepherd
16%inclusion5 decks31 decks
14%synergy
Auramancer
16%inclusion5 decks31 decks
13%synergy
Alseid of Life's Bounty
16%inclusion5 decks31 decks
15%synergy
Twilight Diviner
13%inclusion2 decks15 decks
12%synergy
Fear of Infinity
13%inclusion4 decks31 decks
12%synergy
Stenn, Paranoid Partisan
13%inclusion4 decks31 decks
12%synergy
Overlord of the Mistmoors
13%inclusion4 decks31 decks
11%synergy
Stitcher's Supplier
13%inclusion4 decks31 decks
12%synergy
Consuming Aberration
13%inclusion4 decks31 decks
11%synergy
Enduring Curiosity
13%inclusion4 decks31 decks
5%synergy
Appendage Amalgam
13%inclusion4 decks31 decks
13%synergy
Zur the Enchanter
13%inclusion4 decks31 decks
8%synergy
Braids, Arisen Nightmare
13%inclusion4 decks31 decks
12%synergy
Ghostly Keybearer
13%inclusion4 decks31 decks
13%synergy
Callaphe, Beloved of the Sea
13%inclusion4 decks31 decks
12%synergy
Summon: Primal Odin
13%inclusion3 decks24 decks
8%synergy
Emet-Selch of the Third Seat
13%inclusion3 decks24 decks
3%synergy
Summon: Yojimbo
13%inclusion3 decks24 decks
11%synergy
Solemn Simulacrum
10%inclusion3 decks31 decks
-4%synergy
Optimistic Scavenger
10%inclusion3 decks31 decks
9%synergy
Fear of Isolation
10%inclusion3 decks31 decks
9%synergy
Fear of Lost Teeth
10%inclusion3 decks31 decks
9%synergy
Agent of Erebos
10%inclusion3 decks31 decks
9%synergy
Vega, the Watcher
10%inclusion3 decks31 decks
8%synergy
Cruel Somnophage
10%inclusion3 decks31 decks
9%synergy
Underworld Coinsmith
10%inclusion3 decks31 decks
9%synergy
Instants
Counterspell
39%inclusion12 decks31 decks
-3%synergy
Swords to Plowshares
35%inclusion11 decks31 decks
-32%synergy
Otherworldly Gaze
35%inclusion11 decks31 decks
33%synergy
Negate
29%inclusion9 decks31 decks
13%synergy
Thirst for Meaning
26%inclusion8 decks31 decks
24%synergy
Fact or Fiction
19%inclusion6 decks31 decks
16%synergy
Drown in the Loch
16%inclusion5 decks31 decks
14%synergy
Frantic Search
16%inclusion5 decks31 decks
-2%synergy
Dovin's Veto
16%inclusion5 decks31 decks
-10%synergy
Swallowed by Leviathan
13%inclusion3 decks23 decks
13%synergy
Return to Dust
13%inclusion4 decks31 decks
9%synergy
Get Out
13%inclusion4 decks31 decks
13%synergy
Path to Exile
13%inclusion4 decks31 decks
-29%synergy
Dreams of Laguna
13%inclusion3 decks24 decks
12%synergy
An Offer You Can't Refuse
10%inclusion3 decks31 decks
-18%synergy
Void Rend
10%inclusion3 decks31 decks
-25%synergy
Unwanted Remake
10%inclusion3 decks31 decks
9%synergy
Arcane Denial
10%inclusion3 decks31 decks
-11%synergy
Faithful Mending
10%inclusion3 decks31 decks
6%synergy
Utter End
10%inclusion3 decks31 decks
3%synergy
Waterlogged Teachings
10%inclusion3 decks31 decks
5%synergy
Rowan's Grim Search
10%inclusion3 decks31 decks
10%synergy
Refute
7.4%inclusion2 decks27 decks
5%synergy
Seized from Slumber
6.7%inclusion2 decks30 decks
7%synergy
Absorb
6.5%inclusion2 decks31 decks
4%synergy
Telling Time
6.5%inclusion2 decks31 decks
4%synergy
Forbidden Alchemy
6.5%inclusion2 decks31 decks
6%synergy
Aetherize
6.5%inclusion2 decks31 decks
2%synergy
Infernal Grasp
6.5%inclusion2 decks31 decks
5%synergy
Despark
6.5%inclusion2 decks31 decks
-9%synergy
Visions of Beyond
6.5%inclusion2 decks31 decks
6%synergy
Drown in Dreams
6.5%inclusion2 decks31 decks
6%synergy
Live or Die
6.5%inclusion2 decks31 decks
6%synergy
Sorceries
Redress Fate
32%inclusion10 decks31 decks
27%synergy
Extinguish All Hope
29%inclusion9 decks31 decks
27%synergy
Space-Time Anomaly
24%inclusion5 decks21 decks
22%synergy
Sevinne's Reclamation
23%inclusion7 decks31 decks
14%synergy
Dance of the Manse
16%inclusion5 decks31 decks
13%synergy
Windfall
13%inclusion4 decks31 decks
0%synergy
Time Wipe
13%inclusion4 decks31 decks
6%synergy
Demonic Counsel
13%inclusion4 decks31 decks
12%synergy
Commune with Evil
10%inclusion3 decks31 decks
10%synergy
Resurgent Belief
10%inclusion3 decks31 decks
8%synergy
Glimpse the Unthinkable
10%inclusion3 decks31 decks
9%synergy
Living Death
10%inclusion3 decks31 decks
5%synergy
Final Vengeance
10%inclusion3 decks31 decks
10%synergy
Supreme Verdict
6.5%inclusion2 decks31 decks
-8%synergy
Chart a Course
6.5%inclusion2 decks31 decks
5%synergy
Austere Command
6.5%inclusion2 decks31 decks
-2%synergy
Asinine Antics
6.5%inclusion2 decks31 decks
6%synergy
Triumphant Reckoning
6.5%inclusion2 decks31 decks
6%synergy
Open the Vaults
6.5%inclusion2 decks31 decks
5%synergy
Wrath of God
6.5%inclusion2 decks31 decks
3%synergy
Cut Your Losses
6.5%inclusion2 decks31 decks
6%synergy
Feed the Swarm
6.5%inclusion2 decks31 decks
4%synergy
Diabolic Vision
6.5%inclusion2 decks31 decks
4%synergy
Starfall Invocation
6.5%inclusion2 decks31 decks
4%synergy
Night's Whisper
6.5%inclusion2 decks31 decks
4%synergy
Buried Alive
6.5%inclusion2 decks31 decks
2%synergy
Brilliant Restoration
6.5%inclusion2 decks31 decks
5%synergy
Reanimate
6.5%inclusion2 decks31 decks
-10%synergy
Rite of the Moth
6.5%inclusion2 decks31 decks
6%synergy
Toxic Deluge
6.5%inclusion2 decks31 decks
-13%synergy
Damn
6.5%inclusion2 decks31 decks
-14%synergy
Day of Judgment
6.5%inclusion2 decks31 decks
5%synergy
Traumatize
6.5%inclusion2 decks31 decks
6%synergy
Exhume
6.5%inclusion2 decks31 decks
6%synergy
Utility Artifacts
Keys to the House
23%inclusion7 decks31 decks
22%synergy
Matzalantli, the Great Door
6.5%inclusion2 decks31 decks
4%synergy
Wayfarer's Bauble
6.5%inclusion2 decks31 decks
-1%synergy
Ghost Vacuum
6.5%inclusion2 decks31 decks
6%synergy
Brainstone
6.5%inclusion2 decks31 decks
5%synergy
Enchantments
Secret Arcade // Dusty Parlor
39%inclusion12 decks31 decks
34%synergy
Propaganda
39%inclusion12 decks31 decks
10%synergy
Seal of Removal
39%inclusion12 decks31 decks
38%synergy
Stillness in Motion
36%inclusion9 decks25 decks
36%synergy
Sphere of Safety
35%inclusion11 decks31 decks
26%synergy
Restricted Office // Lecture Hall
35%inclusion11 decks31 decks
33%synergy
Ethereal Armor
35%inclusion11 decks31 decks
31%synergy
Underwater Tunnel // Slimy Aquarium
32%inclusion10 decks31 decks
32%synergy
Central Elevator // Promising Stairs
32%inclusion10 decks31 decks
32%synergy
All That Glitters
32%inclusion10 decks31 decks
24%synergy
Estrid's Invocation
29%inclusion9 decks31 decks
24%synergy
Dress Down
29%inclusion9 decks31 decks
27%synergy
Imprisoned in the Moon
26%inclusion8 decks31 decks
19%synergy
Unable to Scream
26%inclusion8 decks31 decks
25%synergy
Amphibian Downpour
26%inclusion8 decks31 decks
21%synergy
Secrets of the Dead
26%inclusion8 decks31 decks
25%synergy
Polluted Cistern // Dim Oubliette
26%inclusion8 decks31 decks
25%synergy
Darksteel Mutation
23%inclusion7 decks31 decks
17%synergy
Cacophony Unleashed
23%inclusion7 decks31 decks
21%synergy
Ripples of Undeath
23%inclusion7 decks31 decks
20%synergy
Extravagant Replication
23%inclusion7 decks31 decks
18%synergy
Mirrormade
23%inclusion7 decks31 decks
13%synergy
Shark Typhoon
23%inclusion7 decks31 decks
17%synergy
Monologue Tax
23%inclusion7 decks31 decks
16%synergy
Meat Locker // Drowned Diner
20%inclusion6 decks30 decks
20%synergy
Derelict Attic // Widow's Walk
20%inclusion6 decks30 decks
20%synergy
Surgical Suite // Hospital Room
19%inclusion6 decks31 decks
19%synergy
Seal of Doom
19%inclusion6 decks31 decks
19%synergy
Bottomless Pool // Locker Room
19%inclusion6 decks31 decks
18%synergy
Sheltered by Ghosts
19%inclusion6 decks31 decks
17%synergy
Nowhere to Run
19%inclusion6 decks31 decks
18%synergy
Founding the Third Path
16%inclusion5 decks31 decks
16%synergy
Court of Cunning
16%inclusion5 decks31 decks
15%synergy
Utter Insignificance
16%inclusion5 decks31 decks
16%synergy
The Eldest Reborn
16%inclusion5 decks31 decks
14%synergy
Chronic Flooding
16%inclusion5 decks31 decks
16%synergy
The Restoration of Eiganjo
16%inclusion5 decks31 decks
16%synergy
Funeral Room // Awakening Hall
16%inclusion5 decks31 decks
15%synergy
Static Prison
16%inclusion5 decks31 decks
16%synergy
Dazzling Theater // Prop Room
16%inclusion5 decks31 decks
15%synergy
Mirror Room // Fractured Realm
16%inclusion5 decks31 decks
14%synergy
Ballad of the Black Flag
16%inclusion5 decks31 decks
16%synergy
Search for Azcanta
16%inclusion5 decks31 decks
15%synergy
Cramped Vents // Access Maze
13%inclusion4 decks31 decks
11%synergy
Trapped in the Screen
13%inclusion4 decks31 decks
12%synergy
King Narfi's Betrayal
13%inclusion4 decks31 decks
13%synergy
Soul Snare
13%inclusion4 decks31 decks
13%synergy
Touch the Spirit Realm
13%inclusion4 decks31 decks
11%synergy
Mystic Remora
13%inclusion4 decks31 decks
-8%synergy
Witness Protection
13%inclusion4 decks31 decks
11%synergy
Battles
Invasion of Theros
16%inclusion5 decks31 decks
14%synergy
Utility Lands
Bojuka Bog
45%inclusion14 decks31 decks
18%synergy
Hall of Heliod's Generosity
26%inclusion8 decks31 decks
13%synergy
Nephalia Drownyard
16%inclusion5 decks31 decks
16%synergy
Halimar Depths
13%inclusion4 decks31 decks
8%synergy
Drownyard Temple
13%inclusion4 decks31 decks
13%synergy
Cephalid Coliseum
10%inclusion3 decks31 decks
6%synergy
Barren Moor
6.5%inclusion2 decks31 decks
5%synergy
Reliquary Tower
6.5%inclusion2 decks31 decks
-27%synergy
Temple of the False God
6.5%inclusion2 decks31 decks
-1%synergy
Rogue's Passage
6.5%inclusion2 decks31 decks
-3%synergy
Mana Artifacts
Arcane Signet
77%inclusion24 decks31 decks
-10%synergy
Sol Ring
74%inclusion23 decks31 decks
-16%synergy
Orzhov Signet
65%inclusion20 decks31 decks
32%synergy
Azorius Signet
65%inclusion20 decks31 decks
34%synergy
Talisman of Progress
42%inclusion13 decks31 decks
-2%synergy
Dimir Signet
35%inclusion11 decks31 decks
5%synergy
Talisman of Hierarchy
32%inclusion10 decks31 decks
-12%synergy
Commander's Sphere
23%inclusion7 decks31 decks
5%synergy
Talisman of Dominance
23%inclusion7 decks31 decks
-27%synergy
Fellwar Stone
19%inclusion6 decks31 decks
-14%synergy
Mind Stone
19%inclusion6 decks31 decks
7%synergy
Charcoal Diamond
6.5%inclusion2 decks31 decks
5%synergy
Sky Diamond
6.5%inclusion2 decks31 decks
5%synergy
Marble Diamond
6.5%inclusion2 decks31 decks
5%synergy
Lands
Swamp
100%inclusion31 decks31 decks
8%synergy
Island
100%inclusion31 decks31 decks
7%synergy
Plains
97%inclusion30 decks31 decks
5%synergy
Command Tower
90%inclusion28 decks31 decks
-2%synergy
Arcane Sanctum
87%inclusion27 decks31 decks
33%synergy
Exotic Orchard
65%inclusion20 decks31 decks
6%synergy
Temple of Deceit
61%inclusion19 decks31 decks
44%synergy
Temple of Enlightenment
61%inclusion19 decks31 decks
45%synergy
Temple of Silence
61%inclusion19 decks31 decks
43%synergy
Adarkar Wastes
58%inclusion18 decks31 decks
26%synergy
Evolving Wilds
55%inclusion17 decks31 decks
30%synergy
Caves of Koilos
52%inclusion16 decks31 decks
16%synergy
Underground River
48%inclusion15 decks31 decks
14%synergy
Terramorphic Expanse
45%inclusion14 decks31 decks
29%synergy
Valgavoth's Lair
45%inclusion14 decks31 decks
43%synergy
Glacial Fortress
42%inclusion13 decks31 decks
0%synergy
Azorius Chancery
42%inclusion13 decks31 decks
28%synergy
Contaminated Landscape
42%inclusion13 decks31 decks
28%synergy
Prairie Stream
42%inclusion13 decks31 decks
1%synergy
Dimir Aqueduct
39%inclusion12 decks31 decks
26%synergy
Isolated Chapel
39%inclusion12 decks31 decks
-2%synergy
Tainted Field
35%inclusion11 decks31 decks
29%synergy
Orzhov Basilica
35%inclusion11 decks31 decks
20%synergy
Sunken Hollow
35%inclusion11 decks31 decks
-4%synergy
Obscura Storefront
35%inclusion11 decks31 decks
26%synergy
Ash Barrens
32%inclusion10 decks31 decks
22%synergy
Tainted Isle
29%inclusion9 decks31 decks
23%synergy
Path of Ancestry
26%inclusion8 decks31 decks
-2%synergy
Shineshadow Snarl
26%inclusion8 decks31 decks
15%synergy
Darkwater Catacombs
23%inclusion7 decks31 decks
8%synergy
Drowned Catacomb
23%inclusion7 decks31 decks
-15%synergy
Irrigated Farmland
19%inclusion6 decks31 decks
12%synergy
Port Town
19%inclusion6 decks31 decks
2%synergy
Skycloud Expanse
19%inclusion6 decks31 decks
4%synergy
Thriving Moor
19%inclusion6 decks31 decks
15%synergy
Thriving Isle
16%inclusion5 decks31 decks
12%synergy
Thriving Heath
16%inclusion5 decks31 decks
12%synergy
Myriad Landscape
13%inclusion4 decks31 decks
5%synergy
Fetid Heath
13%inclusion4 decks31 decks
0%synergy
Choked Estuary
13%inclusion4 decks31 decks
-4%synergy
Glasswing Grace
10%inclusion3 decks31 decks
7%synergy
Desolate Mire
10%inclusion3 decks31 decks
3%synergy
Waterlogged Teachings
10%inclusion3 decks31 decks
5%synergy
Floodfarm Verge
10%inclusion3 decks31 decks
-1%synergy
Vibrant Cityscape
10%inclusion2 decks21 decks
9%synergy
Escape Tunnel
6.5%inclusion2 decks31 decks
6%synergy
Fetid Pools
6.5%inclusion2 decks31 decks
0%synergy
Hydroelectric Specimen
6.5%inclusion2 decks31 decks
4%synergy
River of Tears
6.5%inclusion2 decks31 decks
4%synergy
Demolition Field
6.5%inclusion2 decks31 decks
2%synergy
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