The Master of Keys (Commander) - Budget Upgraded

The Master of Keys
Rank #303
60decks
As CommanderAs CardAverage DeckDecksView Precon
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Budget
Any$$$$
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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Lands
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Gleaming Bastion
14%inclusion1 decks7 decks
13%synergy
High Synergy Cards
Inquisitive Glimmer
70%inclusion42 decks60 decks
63%synergy
Starfield Mystic
67%inclusion40 decks60 decks
60%synergy
Mesa Enchantress
68%inclusion41 decks60 decks
60%synergy
Demon of Fate's Design
62%inclusion37 decks60 decks
56%synergy
Secret Arcade // Dusty Parlor
60%inclusion36 decks60 decks
56%synergy
Fear of Sleep Paralysis
60%inclusion36 decks60 decks
55%synergy
Scrabbling Skullcrab
55%inclusion33 decks60 decks
54%synergy
Gravebreaker Lamia
55%inclusion33 decks60 decks
54%synergy
Doomwake Giant
58%inclusion35 decks60 decks
53%synergy
Entity Tracker
58%inclusion35 decks60 decks
52%synergy
Top Cards
Mirrormade
48%inclusion29 decks60 decks
39%synergy
Victor, Valgavoth's Seneschal
47%inclusion28 decks60 decks
45%synergy
Cemetery Tampering
47%inclusion28 decks60 decks
46%synergy
Seal of Cleansing
47%inclusion28 decks60 decks
45%synergy
Fear of Impostors
43%inclusion26 decks60 decks
42%synergy
Sphere of Safety
43%inclusion26 decks60 decks
34%synergy
Redress Fate
43%inclusion26 decks60 decks
38%synergy
Sigil of the Empty Throne
42%inclusion25 decks60 decks
36%synergy
Ghostly Dancers
42%inclusion25 decks60 decks
39%synergy
Ondu Spiritdancer
42%inclusion25 decks60 decks
36%synergy
Creatures
Silent Hallcreeper
37%inclusion22 decks60 decks
32%synergy
Moon-Blessed Cleric
35%inclusion21 decks60 decks
30%synergy
Grim Guardian
30%inclusion18 decks60 decks
28%synergy
Sage of Mysteries
28%inclusion17 decks60 decks
28%synergy
Archon of Sun's Grace
27%inclusion16 decks60 decks
22%synergy
Archetype of Imagination
27%inclusion16 decks60 decks
22%synergy
Zur, Eternal Schemer
27%inclusion16 decks60 decks
23%synergy
Zur the Enchanter
27%inclusion16 decks60 decks
22%synergy
Soaring Lightbringer
25%inclusion15 decks60 decks
21%synergy
Ancient Cellarspawn
23%inclusion14 decks60 decks
21%synergy
Alseid of Life's Bounty
23%inclusion14 decks60 decks
22%synergy
Gremlin Tamer
22%inclusion13 decks60 decks
21%synergy
Balemurk Leech
20%inclusion12 decks60 decks
19%synergy
Overlord of the Floodpits
18%inclusion11 decks60 decks
15%synergy
Athreos, Shroud-Veiled
18%inclusion11 decks60 decks
14%synergy
Aminatou, Veil Piercer
18%inclusion11 decks60 decks
17%synergy
Skullsnap Nuisance
18%inclusion11 decks60 decks
18%synergy
Mindwrack Harpy
18%inclusion11 decks60 decks
18%synergy
Eiganjo Dynastorian
18%inclusion3 decks17 decks
16%synergy
Auramancer
17%inclusion10 decks60 decks
14%synergy
Fear of Infinity
15%inclusion9 decks60 decks
14%synergy
Stitcher's Supplier
15%inclusion9 decks60 decks
14%synergy
Enduring Curiosity
15%inclusion9 decks60 decks
7%synergy
Heliod, the Radiant Dawn
15%inclusion9 decks60 decks
12%synergy
Overlord of the Mistmoors
15%inclusion9 decks60 decks
13%synergy
Millikin
15%inclusion9 decks60 decks
14%synergy
Overlord of the Balemurk
13%inclusion8 decks60 decks
12%synergy
Solemn Simulacrum
12%inclusion7 decks60 decks
-1%synergy
Stenn, Paranoid Partisan
12%inclusion7 decks60 decks
10%synergy
Spirited Companion
12%inclusion7 decks60 decks
10%synergy
Abdel Adrian, Gorion's Ward
12%inclusion7 decks60 decks
10%synergy
Stinkweed Imp
12%inclusion7 decks60 decks
12%synergy
Metamorphosis Fanatic
10%inclusion6 decks60 decks
6%synergy
Hydroelectric Specimen
10%inclusion6 decks60 decks
7%synergy
Hedron Crab
10%inclusion6 decks60 decks
9%synergy
Deranged Assistant
10%inclusion6 decks60 decks
10%synergy
Nashi, Searcher in the Dark
10%inclusion6 decks60 decks
9%synergy
Summon: Ixion
8.9%inclusion4 decks45 decks
9%synergy
Optimistic Scavenger
8.3%inclusion5 decks60 decks
8%synergy
Agent of Erebos
8.3%inclusion5 decks60 decks
8%synergy
Appendage Amalgam
8.3%inclusion5 decks60 decks
8%synergy
Arvinox, the Mind Flail
8.3%inclusion5 decks60 decks
7%synergy
Tameshi, Reality Architect
8.3%inclusion5 decks60 decks
8%synergy
Nightmare Shepherd
8.3%inclusion5 decks60 decks
6%synergy
Sram, Senior Edificer
8.3%inclusion5 decks60 decks
3%synergy
Ghostly Keybearer
8.3%inclusion5 decks60 decks
8%synergy
Twilight Diviner
8.3%inclusion2 decks24 decks
7%synergy
Fear of Isolation
6.7%inclusion4 decks60 decks
6%synergy
Boggart Trawler
6.7%inclusion4 decks60 decks
3%synergy
Burnished Hart
6.7%inclusion4 decks60 decks
4%synergy
Instants
Swords to Plowshares
40%inclusion24 decks60 decks
-28%synergy
Thirst for Meaning
25%inclusion15 decks60 decks
24%synergy
Counterspell
25%inclusion15 decks60 decks
-17%synergy
Arcane Denial
23%inclusion14 decks60 decks
3%synergy
Otherworldly Gaze
22%inclusion13 decks60 decks
20%synergy
Path to Exile
22%inclusion13 decks60 decks
-21%synergy
Frantic Search
18%inclusion11 decks60 decks
-0%synergy
Negate
18%inclusion11 decks60 decks
2%synergy
Inkshield
17%inclusion10 decks60 decks
7%synergy
Void Rend
15%inclusion9 decks60 decks
-20%synergy
Fact or Fiction
13%inclusion8 decks60 decks
10%synergy
Utter End
13%inclusion8 decks60 decks
7%synergy
Brainstorm
12%inclusion7 decks60 decks
-5%synergy
Return to Dust
10%inclusion6 decks60 decks
7%synergy
Get Out
10%inclusion6 decks60 decks
10%synergy
An Offer You Can't Refuse
8.3%inclusion5 decks60 decks
-19%synergy
Don't Make a Sound
8.3%inclusion5 decks60 decks
8%synergy
Muddle the Mixture
6.7%inclusion4 decks60 decks
3%synergy
Dovin's Veto
6.7%inclusion4 decks60 decks
-20%synergy
Confounding Riddle
6.7%inclusion4 decks60 decks
6%synergy
Murder
6.7%inclusion4 decks60 decks
5%synergy
Faithful Mending
6.7%inclusion4 decks60 decks
3%synergy
Telling Time
5.0%inclusion3 decks60 decks
3%synergy
Twist Reality
5.0%inclusion3 decks60 decks
5%synergy
Slip Out the Back
5.0%inclusion3 decks60 decks
4%synergy
Sublime Epiphany
5.0%inclusion3 decks60 decks
2%synergy
Stroke of Midnight
5.0%inclusion3 decks60 decks
-3%synergy
Glimmerburst
5.0%inclusion3 decks60 decks
5%synergy
Reality Shift
5.0%inclusion3 decks60 decks
4%synergy
Waterlogged Teachings
5.0%inclusion3 decks60 decks
0%synergy
Rowan's Grim Search
5.0%inclusion3 decks60 decks
5%synergy
Sorceries
Sevinne's Reclamation
37%inclusion22 decks60 decks
28%synergy
Extinguish All Hope
27%inclusion16 decks60 decks
25%synergy
Time Wipe
22%inclusion13 decks60 decks
15%synergy
Singularity Rupture
15%inclusion6 decks41 decks
12%synergy
Resurgent Belief
13%inclusion8 decks60 decks
11%synergy
Read the Bones
13%inclusion8 decks60 decks
9%synergy
Dance of the Manse
13%inclusion8 decks60 decks
10%synergy
Ponder
12%inclusion7 decks60 decks
3%synergy
Buried Alive
10%inclusion6 decks60 decks
6%synergy
Space-Time Anomaly
10%inclusion4 decks41 decks
8%synergy
Open the Vaults
8.3%inclusion5 decks60 decks
7%synergy
Demonic Counsel
8.3%inclusion5 decks60 decks
7%synergy
Glimpse the Unthinkable
8.3%inclusion5 decks60 decks
8%synergy
Brilliant Restoration
8.3%inclusion5 decks60 decks
7%synergy
Lively Dirge
6.7%inclusion4 decks60 decks
5%synergy
Supreme Verdict
6.7%inclusion4 decks60 decks
-8%synergy
Windfall
6.7%inclusion4 decks60 decks
-6%synergy
Diabolic Vision
6.7%inclusion4 decks60 decks
4%synergy
Back for Seconds
6.7%inclusion4 decks60 decks
7%synergy
Final Vengeance
6.7%inclusion4 decks60 decks
6%synergy
Pull from the Grave
5.3%inclusion1 decks19 decks
5%synergy
Stock Up
5.1%inclusion3 decks59 decks
3%synergy
Austere Command
5.0%inclusion3 decks60 decks
-3%synergy
Come Back Wrong
5.0%inclusion3 decks60 decks
5%synergy
Terminus
5.0%inclusion3 decks60 decks
1%synergy
Winds of Rath
5.0%inclusion3 decks60 decks
2%synergy
Traumatize
5.0%inclusion3 decks60 decks
5%synergy
Aminatou's Augury
5.0%inclusion3 decks60 decks
4%synergy
Utility Artifacts
Keys to the House
18%inclusion11 decks60 decks
18%synergy
Cloud Key
17%inclusion10 decks60 decks
13%synergy
Perpetual Timepiece
12%inclusion7 decks60 decks
11%synergy
Wayfarer's Bauble
6.7%inclusion4 decks60 decks
-0%synergy
Mystery Key
6.7%inclusion4 decks60 decks
6%synergy
Whip of Erebos
6.7%inclusion4 decks60 decks
4%synergy
Skeleton Key
5.0%inclusion3 decks60 decks
5%synergy
Manifold Key
5.0%inclusion3 decks60 decks
4%synergy
Moonsilver Key
5.0%inclusion3 decks60 decks
4%synergy
Spy Kit
5.0%inclusion3 decks60 decks
5%synergy
Swiftfoot Boots
5.0%inclusion3 decks60 decks
-19%synergy
Enchantments
Grasp of Fate
40%inclusion24 decks60 decks
34%synergy
All That Glitters
38%inclusion23 decks60 decks
30%synergy
Amphibian Downpour
37%inclusion22 decks60 decks
32%synergy
Ripples of Undeath
35%inclusion21 decks60 decks
32%synergy
Defiled Crypt // Cadaver Lab
35%inclusion21 decks60 decks
34%synergy
The Eldest Reborn
32%inclusion19 decks60 decks
29%synergy
Cacophony Unleashed
30%inclusion18 decks60 decks
28%synergy
The Tale of Tamiyo
30%inclusion18 decks60 decks
30%synergy
Monologue Tax
30%inclusion18 decks60 decks
23%synergy
Dress Down
30%inclusion18 decks60 decks
28%synergy
Ethereal Armor
30%inclusion18 decks60 decks
25%synergy
Cramped Vents // Access Maze
28%inclusion17 decks60 decks
26%synergy
Central Elevator // Promising Stairs
28%inclusion17 decks60 decks
28%synergy
Restricted Office // Lecture Hall
27%inclusion16 decks60 decks
25%synergy
Bottomless Pool // Locker Room
27%inclusion16 decks60 decks
25%synergy
One with the Multiverse
25%inclusion15 decks60 decks
20%synergy
Extravagant Replication
25%inclusion15 decks60 decks
20%synergy
Animate Dead
25%inclusion15 decks60 decks
15%synergy
Propaganda
25%inclusion15 decks60 decks
-4%synergy
Estrid's Invocation
25%inclusion15 decks60 decks
20%synergy
Seal of Removal
25%inclusion15 decks60 decks
24%synergy
Darksteel Mutation
23%inclusion14 decks60 decks
17%synergy
Polluted Cistern // Dim Oubliette
23%inclusion14 decks60 decks
23%synergy
Timely Ward
23%inclusion14 decks60 decks
18%synergy
Stillness in Motion
23%inclusion13 decks56 decks
23%synergy
Copy Enchantment
20%inclusion12 decks60 decks
15%synergy
Mystic Remora
20%inclusion12 decks60 decks
-0%synergy
Dazzling Theater // Prop Room
20%inclusion12 decks60 decks
19%synergy
Imprisoned in the Moon
18%inclusion11 decks60 decks
12%synergy
Funeral Room // Awakening Hall
18%inclusion11 decks60 decks
17%synergy
Secrets of the Dead
18%inclusion11 decks60 decks
18%synergy
Nowhere to Run
18%inclusion11 decks60 decks
17%synergy
Shark Typhoon
18%inclusion11 decks60 decks
13%synergy
Mirror Room // Fractured Realm
18%inclusion11 decks60 decks
16%synergy
Soul Snare
17%inclusion10 decks60 decks
16%synergy
Unholy Annex // Ritual Chamber
17%inclusion10 decks60 decks
16%synergy
Utter Insignificance
15%inclusion9 decks60 decks
14%synergy
Surgical Suite // Hospital Room
15%inclusion9 decks60 decks
15%synergy
Derelict Attic // Widow's Walk
15%inclusion9 decks60 decks
15%synergy
Grievous Wound
13%inclusion8 decks60 decks
13%synergy
Unable to Scream
13%inclusion8 decks60 decks
12%synergy
Meat Locker // Drowned Diner
13%inclusion8 decks60 decks
13%synergy
Eaten by Piranhas
13%inclusion8 decks60 decks
12%synergy
Cast Out
13%inclusion8 decks60 decks
11%synergy
Search for Azcanta
13%inclusion8 decks60 decks
12%synergy
Ghostly Prison
13%inclusion8 decks60 decks
-10%synergy
Primary Research
12%inclusion2 decks17 decks
12%synergy
Witness Protection
12%inclusion7 decks60 decks
10%synergy
Court of Cunning
10%inclusion6 decks60 decks
9%synergy
Underwater Tunnel // Slimy Aquarium
10%inclusion6 decks60 decks
10%synergy
Battles
Invasion of Theros
8.3%inclusion5 decks60 decks
7%synergy
Utility Lands
Hall of Heliod's Generosity
53%inclusion32 decks60 decks
40%synergy
Bojuka Bog
38%inclusion23 decks60 decks
12%synergy
Halimar Depths
20%inclusion12 decks60 decks
15%synergy
Reliquary Tower
13%inclusion8 decks60 decks
-21%synergy
Rogue's Passage
12%inclusion7 decks60 decks
2%synergy
Dakmor Salvage
8.3%inclusion5 decks60 decks
8%synergy
Cephalid Coliseum
8.3%inclusion5 decks60 decks
5%synergy
Temple of the False God
6.7%inclusion4 decks60 decks
-1%synergy
Hostile Hostel
5.0%inclusion3 decks60 decks
5%synergy
Restless Fortress
5.0%inclusion3 decks60 decks
4%synergy
Mana Artifacts
Sol Ring
78%inclusion47 decks60 decks
-11%synergy
Arcane Signet
77%inclusion46 decks60 decks
-11%synergy
Azorius Signet
57%inclusion34 decks60 decks
27%synergy
Orzhov Signet
53%inclusion32 decks60 decks
22%synergy
Talisman of Hierarchy
42%inclusion25 decks60 decks
-3%synergy
Talisman of Progress
40%inclusion24 decks60 decks
-4%synergy
Talisman of Dominance
37%inclusion22 decks60 decks
-13%synergy
Dimir Signet
32%inclusion19 decks60 decks
2%synergy
Fellwar Stone
27%inclusion16 decks60 decks
-6%synergy
Mind Stone
22%inclusion13 decks60 decks
10%synergy
Commander's Sphere
18%inclusion11 decks60 decks
1%synergy
Chromatic Lantern
6.7%inclusion4 decks60 decks
-6%synergy
Sky Diamond
5.0%inclusion3 decks60 decks
4%synergy
Marble Diamond
5.0%inclusion3 decks60 decks
4%synergy
Hourglass of the Lost
5.0%inclusion3 decks60 decks
5%synergy
Lands
Swamp
100%inclusion60 decks60 decks
8%synergy
Plains
100%inclusion60 decks60 decks
8%synergy
Island
100%inclusion60 decks60 decks
7%synergy
Command Tower
87%inclusion52 decks60 decks
-6%synergy
Arcane Sanctum
73%inclusion44 decks60 decks
19%synergy
Caves of Koilos
63%inclusion38 decks60 decks
28%synergy
Adarkar Wastes
55%inclusion33 decks60 decks
22%synergy
Temple of Enlightenment
52%inclusion31 decks60 decks
36%synergy
Underground River
50%inclusion30 decks60 decks
15%synergy
Azorius Chancery
47%inclusion28 decks60 decks
33%synergy
Isolated Chapel
47%inclusion28 decks60 decks
5%synergy
Orzhov Basilica
47%inclusion28 decks60 decks
32%synergy
Temple of Silence
47%inclusion28 decks60 decks
29%synergy
Terramorphic Expanse
42%inclusion25 decks60 decks
26%synergy
Temple of Deceit
42%inclusion25 decks60 decks
25%synergy
Dimir Aqueduct
42%inclusion25 decks60 decks
29%synergy
Exotic Orchard
40%inclusion24 decks60 decks
-19%synergy
Glacial Fortress
38%inclusion23 decks60 decks
-5%synergy
Prairie Stream
38%inclusion23 decks60 decks
-2%synergy
Evolving Wilds
38%inclusion23 decks60 decks
14%synergy
Obscura Storefront
35%inclusion21 decks60 decks
26%synergy
Sunken Hollow
33%inclusion20 decks60 decks
-6%synergy
Contaminated Landscape
32%inclusion19 decks60 decks
18%synergy
Tainted Field
32%inclusion19 decks60 decks
25%synergy
Ash Barrens
30%inclusion18 decks60 decks
19%synergy
Drowned Catacomb
28%inclusion17 decks60 decks
-10%synergy
Valgavoth's Lair
27%inclusion16 decks60 decks
24%synergy
Skycloud Expanse
27%inclusion16 decks60 decks
12%synergy
Tainted Isle
25%inclusion15 decks60 decks
19%synergy
Darkwater Catacombs
23%inclusion14 decks60 decks
9%synergy
Thriving Heath
23%inclusion14 decks60 decks
19%synergy
Thriving Isle
22%inclusion13 decks60 decks
17%synergy
Path of Ancestry
20%inclusion12 decks60 decks
-8%synergy
Thriving Moor
20%inclusion12 decks60 decks
16%synergy
Fetid Heath
17%inclusion10 decks60 decks
3%synergy
Port Town
15%inclusion9 decks60 decks
-2%synergy
Choked Estuary
15%inclusion9 decks60 decks
-2%synergy
Abandoned Campground
13%inclusion8 decks60 decks
13%synergy
Myriad Landscape
13%inclusion8 decks60 decks
6%synergy
Tranquil Cove
13%inclusion8 decks60 decks
7%synergy
Desolate Mire
13%inclusion8 decks60 decks
6%synergy
Dismal Backwater
13%inclusion8 decks60 decks
7%synergy
Scoured Barrens
13%inclusion8 decks60 decks
7%synergy
Shineshadow Snarl
13%inclusion8 decks60 decks
2%synergy
Shattered Sanctum
12%inclusion7 decks60 decks
-6%synergy
Idyllic Beachfront
10%inclusion6 decks60 decks
6%synergy
Irrigated Farmland
10%inclusion6 decks60 decks
3%synergy
Hydroelectric Specimen
10%inclusion6 decks60 decks
7%synergy
Sunlit Marsh
10%inclusion6 decks60 decks
5%synergy
Neglected Manor
8.3%inclusion5 decks60 decks
8%synergy
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