The Master of Keys (Commander) - Budget Self-Mill

The Master of Keys
Rank #301
16decks
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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Eiganjo Dynastorian
50%inclusion1 decks2 decks
49%synergy
Paramecia Coloniex
33%inclusion1 decks3 decks
33%synergy
High Synergy Cards
Mesa Enchantress
88%inclusion14 decks16 decks
79%synergy
Scrabbling Skullcrab
75%inclusion12 decks16 decks
74%synergy
Inquisitive Glimmer
81%inclusion13 decks16 decks
74%synergy
Starfield Mystic
75%inclusion12 decks16 decks
69%synergy
Demon of Fate's Design
69%inclusion11 decks16 decks
63%synergy
Doomwake Giant
69%inclusion11 decks16 decks
63%synergy
Entity Tracker
69%inclusion11 decks16 decks
63%synergy
Sigil of the Empty Throne
56%inclusion9 decks16 decks
50%synergy
Sage of Mysteries
50%inclusion8 decks16 decks
50%synergy
Defiled Crypt // Cadaver Lab
50%inclusion8 decks16 decks
49%synergy
Top Cards
Gravebreaker Lamia
50%inclusion8 decks16 decks
49%synergy
Fear of Impostors
50%inclusion8 decks16 decks
49%synergy
Soaring Lightbringer
50%inclusion8 decks16 decks
45%synergy
Victor, Valgavoth's Seneschal
50%inclusion8 decks16 decks
48%synergy
Cemetery Tampering
50%inclusion8 decks16 decks
49%synergy
Fear of Sleep Paralysis
50%inclusion8 decks16 decks
45%synergy
Secret Arcade // Dusty Parlor
50%inclusion8 decks16 decks
45%synergy
Stillness in Motion
45%inclusion5 decks11 decks
45%synergy
Frantic Search
44%inclusion7 decks16 decks
26%synergy
Thirst for Meaning
44%inclusion7 decks16 decks
42%synergy
Game Changers
Bolas's Citadel
6.3%inclusion1 decks16 decks
-3%synergy
Creatures
Aminatou, Veil Piercer
44%inclusion7 decks16 decks
42%synergy
Grim Guardian
44%inclusion7 decks16 decks
41%synergy
Ghostly Dancers
44%inclusion7 decks16 decks
41%synergy
Ondu Spiritdancer
44%inclusion7 decks16 decks
38%synergy
Silent Hallcreeper
38%inclusion6 decks16 decks
33%synergy
Moon-Blessed Cleric
38%inclusion6 decks16 decks
33%synergy
Zur, Eternal Schemer
38%inclusion6 decks16 decks
34%synergy
Zur the Enchanter
38%inclusion6 decks16 decks
32%synergy
Fear of Infinity
31%inclusion5 decks16 decks
31%synergy
Archon of Sun's Grace
31%inclusion5 decks16 decks
27%synergy
Enduring Curiosity
31%inclusion5 decks16 decks
23%synergy
Heliod, the Radiant Dawn
31%inclusion5 decks16 decks
28%synergy
Mindwrack Harpy
31%inclusion5 decks16 decks
31%synergy
Overlord of the Floodpits
25%inclusion4 decks16 decks
21%synergy
Fear of Surveillance
25%inclusion4 decks16 decks
25%synergy
Skullsnap Nuisance
25%inclusion4 decks16 decks
25%synergy
Gremlin Tamer
25%inclusion4 decks16 decks
24%synergy
Balemurk Leech
25%inclusion4 decks16 decks
24%synergy
Archetype of Imagination
25%inclusion4 decks16 decks
20%synergy
Nightmare Shepherd
25%inclusion4 decks16 decks
23%synergy
Dreadwing Scavenger
23%inclusion3 decks13 decks
22%synergy
Solemn Simulacrum
19%inclusion3 decks16 decks
5%synergy
Stenn, Paranoid Partisan
19%inclusion3 decks16 decks
17%synergy
Protean Thaumaturge
19%inclusion3 decks16 decks
18%synergy
Spirited Companion
19%inclusion3 decks16 decks
17%synergy
Appendage Amalgam
19%inclusion3 decks16 decks
19%synergy
Alseid of Life's Bounty
19%inclusion3 decks16 decks
17%synergy
Callaphe, Beloved of the Sea
19%inclusion3 decks16 decks
18%synergy
Emet-Selch of the Third Seat
18%inclusion2 decks11 decks
9%synergy
Starnheim Courser
13%inclusion2 decks16 decks
9%synergy
Fear of Lost Teeth
13%inclusion2 decks16 decks
12%synergy
Go-Shintai of Shared Purpose
13%inclusion2 decks16 decks
12%synergy
The Ancient One
13%inclusion2 decks16 decks
12%synergy
Ashiok's Reaper
13%inclusion2 decks16 decks
12%synergy
Stitcher's Supplier
13%inclusion2 decks16 decks
12%synergy
Fear of the Dark
13%inclusion2 decks16 decks
12%synergy
Athreos, Shroud-Veiled
13%inclusion2 decks16 decks
8%synergy
Verge Rangers
13%inclusion2 decks16 decks
11%synergy
Tameshi, Reality Architect
13%inclusion2 decks16 decks
12%synergy
Thassa's Devourer
13%inclusion2 decks16 decks
12%synergy
Braids, Arisen Nightmare
13%inclusion2 decks16 decks
11%synergy
Go-Shintai of Lost Wisdom
13%inclusion2 decks16 decks
12%synergy
Millikin
13%inclusion2 decks16 decks
12%synergy
Go-Shintai of Hidden Cruelty
13%inclusion2 decks16 decks
12%synergy
Summon: Ixion
9.1%inclusion1 decks11 decks
9%synergy
Summon: Yojimbo
9.1%inclusion1 decks11 decks
8%synergy
The Warring Triad
9.1%inclusion1 decks11 decks
9%synergy
Y'shtola, Night's Blessed
8.3%inclusion1 decks12 decks
7%synergy
Optimistic Scavenger
6.3%inclusion1 decks16 decks
6%synergy
Phenax, God of Deception
6.3%inclusion1 decks16 decks
6%synergy
Instants
Otherworldly Gaze
38%inclusion6 decks16 decks
35%synergy
Void Rend
31%inclusion5 decks16 decks
-3%synergy
Swords to Plowshares
31%inclusion5 decks16 decks
-37%synergy
Counterspell
31%inclusion5 decks16 decks
-11%synergy
Negate
25%inclusion4 decks16 decks
9%synergy
Brainstorm
19%inclusion3 decks16 decks
2%synergy
Utter End
19%inclusion3 decks16 decks
12%synergy
Don't Make a Sound
13%inclusion2 decks15 decks
13%synergy
Dovin's Veto
13%inclusion2 decks16 decks
-13%synergy
Return to Dust
13%inclusion2 decks16 decks
9%synergy
Essence Scatter
13%inclusion2 decks16 decks
12%synergy
Arcane Denial
13%inclusion2 decks16 decks
-8%synergy
Rowan's Grim Search
13%inclusion2 decks16 decks
12%synergy
Refute
7.1%inclusion1 decks14 decks
5%synergy
Glimmerburst
6.7%inclusion1 decks15 decks
6%synergy
Hero's Downfall
6.3%inclusion1 decks16 decks
6%synergy
Truth or Tale
6.3%inclusion1 decks16 decks
5%synergy
Telling Time
6.3%inclusion1 decks16 decks
4%synergy
Murmurs from Beyond
6.3%inclusion1 decks16 decks
6%synergy
Faith's Reward
6.3%inclusion1 decks16 decks
6%synergy
Bone to Ash
6.3%inclusion1 decks16 decks
6%synergy
Censor
6.3%inclusion1 decks16 decks
6%synergy
Fact or Fiction
6.3%inclusion1 decks16 decks
3%synergy
Ancient Excavation
6.3%inclusion1 decks16 decks
5%synergy
Kellan's Lightblades
6.3%inclusion1 decks16 decks
6%synergy
Consider
6.3%inclusion1 decks16 decks
4%synergy
Dark Ritual
6.3%inclusion1 decks16 decks
-14%synergy
Forbidden Alchemy
6.3%inclusion1 decks16 decks
6%synergy
Tainted Indulgence
6.3%inclusion1 decks16 decks
6%synergy
Countersquall
6.3%inclusion1 decks16 decks
5%synergy
Reality Shift
6.3%inclusion1 decks16 decks
5%synergy
Opt
6.3%inclusion1 decks16 decks
2%synergy
Ertai's Scorn
6.3%inclusion1 decks16 decks
6%synergy
Cancel
6.3%inclusion1 decks16 decks
5%synergy
Farsight Ritual
6.3%inclusion1 decks16 decks
6%synergy
Thought Scour
6.3%inclusion1 decks16 decks
5%synergy
Murder
6.3%inclusion1 decks16 decks
5%synergy
Hindering Light
6.3%inclusion1 decks16 decks
5%synergy
Candy Grapple
6.3%inclusion1 decks16 decks
6%synergy
Stroke of Midnight
6.3%inclusion1 decks16 decks
-1%synergy
Anguished Unmaking
6.3%inclusion1 decks16 decks
-19%synergy
Get Out
6.3%inclusion1 decks16 decks
6%synergy
Despark
6.3%inclusion1 decks16 decks
-10%synergy
Feed the Cycle
6.3%inclusion1 decks16 decks
6%synergy
Mana Leak
6.3%inclusion1 decks16 decks
4%synergy
Wrong Turn
6.3%inclusion1 decks16 decks
6%synergy
Spell Pierce
6.3%inclusion1 decks16 decks
4%synergy
Path to Exile
6.3%inclusion1 decks16 decks
-36%synergy
Unwind
6.3%inclusion1 decks16 decks
0%synergy
No More Lies
6.3%inclusion1 decks16 decks
5%synergy
Sorceries
Extinguish All Hope
38%inclusion6 decks16 decks
36%synergy
Dance of the Manse
38%inclusion6 decks16 decks
34%synergy
Sevinne's Reclamation
31%inclusion5 decks16 decks
22%synergy
Feed the Swarm
25%inclusion4 decks16 decks
22%synergy
Read the Bones
25%inclusion4 decks16 decks
21%synergy
Redress Fate
25%inclusion4 decks16 decks
19%synergy
Time Wipe
19%inclusion3 decks16 decks
12%synergy
Resurgent Belief
13%inclusion2 decks16 decks
11%synergy
Terminus
13%inclusion2 decks16 decks
9%synergy
Night's Whisper
13%inclusion2 decks16 decks
10%synergy
Brilliant Restoration
13%inclusion2 decks16 decks
11%synergy
Diresight
13%inclusion2 decks16 decks
12%synergy
Space-Time Anomaly
9.1%inclusion1 decks11 decks
8%synergy
Risky Research
9.1%inclusion1 decks11 decks
9%synergy
Ponder
6.3%inclusion1 decks16 decks
-3%synergy
Supreme Verdict
6.3%inclusion1 decks16 decks
-8%synergy
Windfall
6.3%inclusion1 decks16 decks
-7%synergy
Requisition Raid
6.3%inclusion1 decks16 decks
5%synergy
Austere Command
6.3%inclusion1 decks16 decks
-2%synergy
Lively Dirge
6.3%inclusion1 decks16 decks
5%synergy
Open the Vaults
6.3%inclusion1 decks16 decks
5%synergy
Open the Armory
6.3%inclusion1 decks16 decks
3%synergy
Careful Study
6.3%inclusion1 decks16 decks
4%synergy
Wrath of God
6.3%inclusion1 decks16 decks
3%synergy
Doomskar
6.3%inclusion1 decks16 decks
6%synergy
Cut Your Losses
6.3%inclusion1 decks16 decks
6%synergy
Glimpse the Unthinkable
6.3%inclusion1 decks16 decks
6%synergy
Vindicate
6.3%inclusion1 decks16 decks
-5%synergy
Diabolic Vision
6.3%inclusion1 decks16 decks
4%synergy
Starfall Invocation
6.3%inclusion1 decks16 decks
4%synergy
Exsanguinate
6.3%inclusion1 decks16 decks
-1%synergy
Buried Alive
6.3%inclusion1 decks16 decks
2%synergy
Memory Sluice
6.3%inclusion1 decks16 decks
6%synergy
Vanquish the Horde
6.3%inclusion1 decks16 decks
3%synergy
Preordain
6.3%inclusion1 decks16 decks
1%synergy
Toxic Deluge
6.3%inclusion1 decks16 decks
-13%synergy
Damn
6.3%inclusion1 decks16 decks
-14%synergy
Retether
6.3%inclusion1 decks16 decks
5%synergy
Sign in Blood
6.3%inclusion1 decks16 decks
4%synergy
Final Vengeance
6.3%inclusion1 decks16 decks
6%synergy
Day of Judgment
6.3%inclusion1 decks16 decks
5%synergy
Unburial Rites
6.3%inclusion1 decks16 decks
3%synergy
Languish
6.3%inclusion1 decks16 decks
6%synergy
Utility Artifacts
Wayfarer's Bauble
19%inclusion3 decks16 decks
11%synergy
Bident of Thassa
19%inclusion3 decks16 decks
10%synergy
Mirage Mirror
13%inclusion2 decks16 decks
12%synergy
Swiftfoot Boots
13%inclusion2 decks16 decks
-12%synergy
Rescue Skiff
9.1%inclusion1 decks11 decks
9%synergy
Riverchurn Monument
8.3%inclusion1 decks12 decks
8%synergy
Perpetual Timepiece
6.3%inclusion1 decks16 decks
6%synergy
Power Conduit
6.3%inclusion1 decks16 decks
6%synergy
Helm of the Gods
6.3%inclusion1 decks16 decks
5%synergy
Keys to the House
6.3%inclusion1 decks16 decks
6%synergy
Palantír of Orthanc
6.3%inclusion1 decks16 decks
5%synergy
Glimmerlight
6.3%inclusion1 decks16 decks
6%synergy
Crystal Chimes
6.3%inclusion1 decks16 decks
6%synergy
Enchantments
Estrid's Invocation
44%inclusion7 decks16 decks
39%synergy
Seal of Cleansing
44%inclusion7 decks16 decks
42%synergy
Ethereal Armor
44%inclusion7 decks16 decks
39%synergy
Ripples of Undeath
38%inclusion6 decks16 decks
35%synergy
Extravagant Replication
38%inclusion6 decks16 decks
32%synergy
Central Elevator // Promising Stairs
38%inclusion6 decks16 decks
37%synergy
All That Glitters
38%inclusion6 decks16 decks
29%synergy
Bottomless Pool // Locker Room
38%inclusion6 decks16 decks
36%synergy
Polluted Cistern // Dim Oubliette
38%inclusion6 decks16 decks
37%synergy
Mirrormade
31%inclusion5 decks16 decks
21%synergy
Sphere of Safety
31%inclusion5 decks16 decks
22%synergy
Dress Down
31%inclusion5 decks16 decks
29%synergy
Dazzling Theater // Prop Room
31%inclusion5 decks16 decks
30%synergy
Meat Locker // Drowned Diner
27%inclusion4 decks15 decks
26%synergy
Derelict Attic // Widow's Walk
27%inclusion4 decks15 decks
26%synergy
Cramped Vents // Access Maze
25%inclusion4 decks16 decks
23%synergy
Court of Cunning
25%inclusion4 decks16 decks
24%synergy
Copy Enchantment
25%inclusion4 decks16 decks
20%synergy
Darksteel Mutation
19%inclusion3 decks16 decks
13%synergy
One with the Multiverse
19%inclusion3 decks16 decks
14%synergy
Grasp of Fate
19%inclusion3 decks16 decks
13%synergy
Underwater Tunnel // Slimy Aquarium
19%inclusion3 decks16 decks
18%synergy
Elspeth Conquers Death
19%inclusion3 decks16 decks
18%synergy
Timely Ward
19%inclusion3 decks16 decks
14%synergy
The Tale of Tamiyo
19%inclusion3 decks16 decks
18%synergy
Amphibian Downpour
19%inclusion3 decks16 decks
14%synergy
Restricted Office // Lecture Hall
19%inclusion3 decks16 decks
17%synergy
Secrets of the Dead
19%inclusion3 decks16 decks
18%synergy
Propaganda
19%inclusion3 decks16 decks
-10%synergy
Seal of Removal
19%inclusion3 decks16 decks
18%synergy
Southern Air Temple
18%inclusion2 decks11 decks
18%synergy
The Death of Gwen Stacy
18%inclusion2 decks11 decks
18%synergy
Airbender Ascension
14%inclusion1 decks7 decks
14%synergy
Northern Air Temple
14%inclusion1 decks7 decks
14%synergy
The Spirit Oasis
14%inclusion1 decks7 decks
14%synergy
Staggering Insight
13%inclusion2 decks16 decks
10%synergy
Honden of Cleansing Fire
13%inclusion2 decks16 decks
12%synergy
Fortune Teller's Talent
13%inclusion2 decks16 decks
12%synergy
Sanctum of Calm Waters
13%inclusion2 decks16 decks
12%synergy
Cacophony Unleashed
13%inclusion2 decks16 decks
11%synergy
King Narfi's Betrayal
13%inclusion2 decks16 decks
12%synergy
Honden of Night's Reach
13%inclusion2 decks16 decks
12%synergy
Demonic Covenant
13%inclusion2 decks16 decks
12%synergy
Unquestioned Authority
13%inclusion2 decks16 decks
11%synergy
The Eldest Reborn
13%inclusion2 decks16 decks
10%synergy
Honden of Seeing Winds
13%inclusion2 decks16 decks
12%synergy
Soul Snare
13%inclusion2 decks16 decks
12%synergy
Surgical Suite // Hospital Room
13%inclusion2 decks16 decks
12%synergy
Seal of Doom
13%inclusion2 decks16 decks
12%synergy
Boon of the Spirit Realm
13%inclusion2 decks16 decks
11%synergy
Battles
Invasion of Theros
19%inclusion3 decks16 decks
17%synergy
Planeswalkers
Kaya, Orzhov Usurper
6.3%inclusion1 decks16 decks
6%synergy
Ashiok, Dream Render
6.3%inclusion1 decks16 decks
5%synergy
Utility Lands
Bojuka Bog
31%inclusion5 decks16 decks
4%synergy
Nephalia Drownyard
25%inclusion4 decks16 decks
25%synergy
Halimar Depths
13%inclusion2 decks16 decks
8%synergy
Ishgard, the Holy See
9.1%inclusion1 decks11 decks
6%synergy
Mortuary Mire
6.3%inclusion1 decks16 decks
4%synergy
Reliquary Tower
6.3%inclusion1 decks16 decks
-28%synergy
Drownyard Temple
6.3%inclusion1 decks16 decks
6%synergy
Cephalid Coliseum
6.3%inclusion1 decks16 decks
3%synergy
Nesting Grounds
6.3%inclusion1 decks16 decks
5%synergy
Field of Ruin
6.3%inclusion1 decks16 decks
5%synergy
Mana Artifacts
Arcane Signet
94%inclusion15 decks16 decks
6%synergy
Sol Ring
75%inclusion12 decks16 decks
-15%synergy
Azorius Signet
69%inclusion11 decks16 decks
38%synergy
Orzhov Signet
63%inclusion10 decks16 decks
30%synergy
Dimir Signet
56%inclusion9 decks16 decks
26%synergy
Talisman of Progress
50%inclusion8 decks16 decks
6%synergy
Talisman of Dominance
44%inclusion7 decks16 decks
-6%synergy
Talisman of Hierarchy
38%inclusion6 decks16 decks
-7%synergy
Mind Stone
38%inclusion6 decks16 decks
25%synergy
Commander's Sphere
25%inclusion4 decks16 decks
7%synergy
Fellwar Stone
19%inclusion3 decks16 decks
-14%synergy
Charcoal Diamond
13%inclusion2 decks16 decks
11%synergy
Sky Diamond
13%inclusion2 decks16 decks
11%synergy
Marble Diamond
13%inclusion2 decks16 decks
11%synergy
Altar of the Pantheon
6.3%inclusion1 decks16 decks
6%synergy
Lands
Island
100%inclusion16 decks16 decks
7%synergy
Swamp
94%inclusion15 decks16 decks
2%synergy
Plains
94%inclusion15 decks16 decks
2%synergy
Command Tower
88%inclusion14 decks16 decks
-5%synergy
Arcane Sanctum
75%inclusion12 decks16 decks
21%synergy
Glacial Fortress
50%inclusion8 decks16 decks
8%synergy
Exotic Orchard
50%inclusion8 decks16 decks
-9%synergy
Caves of Koilos
50%inclusion8 decks16 decks
14%synergy
Contaminated Landscape
44%inclusion7 decks16 decks
30%synergy
Isolated Chapel
44%inclusion7 decks16 decks
3%synergy
Temple of Enlightenment
44%inclusion7 decks16 decks
28%synergy
Terramorphic Expanse
38%inclusion6 decks16 decks
22%synergy
Temple of Deceit
38%inclusion6 decks16 decks
20%synergy
Dimir Aqueduct
38%inclusion6 decks16 decks
24%synergy
Drowned Catacomb
38%inclusion6 decks16 decks
0%synergy
Evolving Wilds
38%inclusion6 decks16 decks
13%synergy
Adarkar Wastes
38%inclusion6 decks16 decks
5%synergy
Temple of Silence
38%inclusion6 decks16 decks
19%synergy
Azorius Chancery
31%inclusion5 decks16 decks
18%synergy
Underground River
31%inclusion5 decks16 decks
-3%synergy
Orzhov Basilica
31%inclusion5 decks16 decks
16%synergy
Prairie Stream
25%inclusion4 decks16 decks
-16%synergy
Valgavoth's Lair
25%inclusion4 decks16 decks
22%synergy
Skycloud Expanse
25%inclusion4 decks16 decks
10%synergy
Obscura Storefront
25%inclusion4 decks16 decks
15%synergy
Tainted Isle
19%inclusion3 decks16 decks
12%synergy
Tainted Field
13%inclusion2 decks16 decks
6%synergy
Port Town
13%inclusion2 decks16 decks
-4%synergy
Darkwater Catacombs
13%inclusion2 decks16 decks
-2%synergy
Tranquil Cove
13%inclusion2 decks16 decks
6%synergy
Shire Terrace
13%inclusion2 decks16 decks
12%synergy
Seachrome Coast
13%inclusion2 decks16 decks
9%synergy
Path of Ancestry
13%inclusion2 decks16 decks
-15%synergy
Murky Sewer
13%inclusion2 decks16 decks
12%synergy
Neglected Manor
13%inclusion2 decks16 decks
12%synergy
Shineshadow Snarl
13%inclusion2 decks16 decks
2%synergy
Sunken Hollow
13%inclusion2 decks16 decks
-27%synergy
Choked Estuary
13%inclusion2 decks16 decks
-4%synergy
Bleachbone Verge
8.3%inclusion1 decks12 decks
0%synergy
Fabled Passage
6.3%inclusion1 decks16 decks
-1%synergy
Abandoned Campground
6.3%inclusion1 decks16 decks
6%synergy
Myriad Landscape
6.3%inclusion1 decks16 decks
-2%synergy
Concealed Courtyard
6.3%inclusion1 decks16 decks
2%synergy
Lonely Arroyo
6.3%inclusion1 decks16 decks
5%synergy
Desolate Mire
6.3%inclusion1 decks16 decks
-1%synergy
Irrigated Farmland
6.3%inclusion1 decks16 decks
-1%synergy
Dimir Guildgate
6.3%inclusion1 decks16 decks
5%synergy
Orzhov Guildgate
6.3%inclusion1 decks16 decks
5%synergy
Ash Barrens
6.3%inclusion1 decks16 decks
-4%synergy
Shipwreck Marsh
6.3%inclusion1 decks16 decks
-14%synergy
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