The Master of Keys (Commander) - Budget Optimized

The Master of Keys
Rank #300
35decks
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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Battles
Utility Lands
Mana Artifacts
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Secret Arcade // Dusty Parlor
74%inclusion26 decks35 decks
70%synergy
Mesa Enchantress
77%inclusion27 decks35 decks
69%synergy
Inquisitive Glimmer
71%inclusion25 decks35 decks
64%synergy
Starfield Mystic
69%inclusion24 decks35 decks
62%synergy
Demon of Fate's Design
66%inclusion23 decks35 decks
60%synergy
Ondu Spiritdancer
66%inclusion23 decks35 decks
60%synergy
Mirrormade
69%inclusion24 decks35 decks
59%synergy
Entity Tracker
63%inclusion22 decks35 decks
57%synergy
Scrabbling Skullcrab
57%inclusion20 decks35 decks
56%synergy
Gravebreaker Lamia
54%inclusion19 decks35 decks
53%synergy
Top Cards
Swords to Plowshares
63%inclusion22 decks35 decks
-5%synergy
Fear of Sleep Paralysis
57%inclusion20 decks35 decks
52%synergy
Sphere of Safety
54%inclusion19 decks35 decks
45%synergy
Doomwake Giant
51%inclusion18 decks35 decks
46%synergy
Victor, Valgavoth's Seneschal
49%inclusion17 decks35 decks
47%synergy
Sigil of the Empty Throne
46%inclusion16 decks35 decks
40%synergy
Moon-Blessed Cleric
46%inclusion16 decks35 decks
41%synergy
Arcane Denial
46%inclusion16 decks35 decks
26%synergy
Bottomless Pool // Locker Room
46%inclusion16 decks35 decks
44%synergy
Soaring Lightbringer
46%inclusion16 decks35 decks
41%synergy
Game Changers
Gifts Ungiven
14%inclusion5 decks35 decks
12%synergy
Notion Thief
14%inclusion5 decks35 decks
8%synergy
Creatures
Ghostly Dancers
46%inclusion16 decks35 decks
43%synergy
Fear of Impostors
43%inclusion15 decks35 decks
41%synergy
Aminatou, Veil Piercer
40%inclusion14 decks35 decks
39%synergy
Archetype of Imagination
37%inclusion13 decks35 decks
32%synergy
Overlord of the Floodpits
34%inclusion12 decks35 decks
31%synergy
Skullsnap Nuisance
34%inclusion12 decks35 decks
34%synergy
Gremlin Tamer
34%inclusion12 decks35 decks
33%synergy
Nightmare Shepherd
29%inclusion10 decks35 decks
26%synergy
Silent Hallcreeper
29%inclusion10 decks35 decks
24%synergy
Solemn Simulacrum
26%inclusion9 decks35 decks
13%synergy
Ancient Cellarspawn
26%inclusion9 decks35 decks
23%synergy
Auramancer
26%inclusion9 decks35 decks
23%synergy
Athreos, Shroud-Veiled
26%inclusion9 decks35 decks
21%synergy
Grim Guardian
23%inclusion8 decks35 decks
20%synergy
Abdel Adrian, Gorion's Ward
23%inclusion8 decks35 decks
21%synergy
Zur, Eternal Schemer
23%inclusion8 decks35 decks
20%synergy
Archon of Sun's Grace
20%inclusion7 decks35 decks
16%synergy
Sage of Mysteries
20%inclusion7 decks35 decks
20%synergy
Overlord of the Balemurk
20%inclusion7 decks35 decks
18%synergy
Heliod, the Radiant Dawn
20%inclusion7 decks35 decks
17%synergy
Balemurk Leech
20%inclusion7 decks35 decks
19%synergy
Phenomenon Investigators
20%inclusion7 decks35 decks
19%synergy
Zur the Enchanter
20%inclusion7 decks35 decks
15%synergy
Mindwrack Harpy
20%inclusion7 decks35 decks
20%synergy
Burnished Hart
17%inclusion6 decks35 decks
14%synergy
Enduring Curiosity
17%inclusion6 decks35 decks
9%synergy
Nashi, Searcher in the Dark
17%inclusion6 decks35 decks
17%synergy
Optimistic Scavenger
14%inclusion5 decks35 decks
14%synergy
Hedron Crab
14%inclusion5 decks35 decks
14%synergy
Leonin Relic-Warder
14%inclusion5 decks35 decks
14%synergy
Spirited Companion
14%inclusion5 decks35 decks
13%synergy
Metamorphosis Fanatic
11%inclusion4 decks35 decks
7%synergy
Fear of Infinity
11%inclusion4 decks35 decks
11%synergy
Malevolent Hermit
11%inclusion4 decks35 decks
11%synergy
Warehouse Tabby
11%inclusion4 decks35 decks
11%synergy
Creeping Peeper
11%inclusion4 decks35 decks
11%synergy
Underworld Coinsmith
11%inclusion4 decks35 decks
11%synergy
Verge Rangers
11%inclusion4 decks35 decks
10%synergy
Laboratory Maniac
11%inclusion4 decks35 decks
8%synergy
Ghostly Pilferer
11%inclusion4 decks35 decks
4%synergy
Exhibition Tidecaller
9.1%inclusion1 decks11 decks
9%synergy
Starnheim Courser
8.6%inclusion3 decks35 decks
5%synergy
Fear of Isolation
8.6%inclusion3 decks35 decks
8%synergy
Protean Thaumaturge
8.6%inclusion3 decks35 decks
8%synergy
Lurrus of the Dream-Den
8.6%inclusion3 decks35 decks
7%synergy
Overlord of the Mistmoors
8.6%inclusion3 decks35 decks
7%synergy
Hydroelectric Specimen
8.6%inclusion3 decks35 decks
6%synergy
Ledger Shredder
8.6%inclusion3 decks35 decks
-0%synergy
Braids, Arisen Nightmare
8.6%inclusion3 decks35 decks
7%synergy
Emet-Selch of the Third Seat
6.7%inclusion2 decks30 decks
-3%synergy
Instants
Thirst for Meaning
34%inclusion12 decks35 decks
33%synergy
Inkshield
34%inclusion12 decks35 decks
24%synergy
Utter End
31%inclusion11 decks35 decks
25%synergy
Counterspell
31%inclusion11 decks35 decks
-11%synergy
Otherworldly Gaze
26%inclusion9 decks35 decks
24%synergy
An Offer You Can't Refuse
20%inclusion7 decks35 decks
-8%synergy
Brainstorm
20%inclusion7 decks35 decks
3%synergy
Path to Exile
20%inclusion7 decks35 decks
-22%synergy
Negate
17%inclusion6 decks35 decks
1%synergy
Dark Ritual
17%inclusion6 decks35 decks
-3%synergy
Get Out
17%inclusion6 decks35 decks
17%synergy
Dovin's Veto
14%inclusion5 decks35 decks
-12%synergy
Delay
14%inclusion5 decks35 decks
12%synergy
Muddle the Mixture
11%inclusion4 decks35 decks
8%synergy
Frantic Search
11%inclusion4 decks35 decks
-7%synergy
Lim-Dûl's Vault
11%inclusion4 decks35 decks
8%synergy
Opt
11%inclusion4 decks35 decks
8%synergy
Mana Leak
11%inclusion4 decks35 decks
10%synergy
No More Lies
11%inclusion4 decks35 decks
10%synergy
Shred Memory
8.6%inclusion3 decks35 decks
8%synergy
Return to Dust
8.6%inclusion3 decks35 decks
5%synergy
Telling Time
8.6%inclusion3 decks35 decks
6%synergy
Fact or Fiction
8.6%inclusion3 decks35 decks
5%synergy
Darkblast
8.6%inclusion3 decks35 decks
8%synergy
Dispel
8.6%inclusion3 decks35 decks
5%synergy
Spell Pierce
8.6%inclusion3 decks35 decks
6%synergy
Refute
5.7%inclusion2 decks35 decks
3%synergy
Consider
5.7%inclusion2 decks35 decks
3%synergy
Soul Partition
5.7%inclusion2 decks35 decks
5%synergy
Disenchant
5.7%inclusion2 decks35 decks
4%synergy
Miscast
5.7%inclusion2 decks35 decks
5%synergy
Waterlogged Teachings
5.7%inclusion2 decks35 decks
1%synergy
Murder
5.7%inclusion2 decks35 decks
4%synergy
Long River's Pull
5.7%inclusion2 decks35 decks
5%synergy
Sorceries
Redress Fate
40%inclusion14 decks35 decks
35%synergy
Sevinne's Reclamation
31%inclusion11 decks35 decks
23%synergy
Read the Bones
23%inclusion8 decks35 decks
19%synergy
Extinguish All Hope
23%inclusion8 decks35 decks
21%synergy
Lively Dirge
20%inclusion7 decks35 decks
19%synergy
Terminus
20%inclusion7 decks35 decks
16%synergy
Time Wipe
17%inclusion6 decks35 decks
11%synergy
Diabolic Vision
17%inclusion6 decks35 decks
15%synergy
Ponder
14%inclusion5 decks35 decks
5%synergy
Unmarked Grave
14%inclusion5 decks35 decks
13%synergy
Portent
14%inclusion5 decks35 decks
11%synergy
Windfall
11%inclusion4 decks35 decks
-2%synergy
Demonic Counsel
11%inclusion4 decks35 decks
10%synergy
Buried Alive
11%inclusion4 decks35 decks
7%synergy
Entreat the Angels
11%inclusion4 decks35 decks
10%synergy
Resurgent Belief
8.6%inclusion3 decks35 decks
7%synergy
Split Up
8.6%inclusion3 decks35 decks
7%synergy
Feed the Swarm
8.6%inclusion3 decks35 decks
6%synergy
Reanimate
8.6%inclusion3 decks35 decks
-8%synergy
Final Parting
8.6%inclusion3 decks35 decks
8%synergy
Insatiable Avarice
8.6%inclusion3 decks35 decks
7%synergy
Damn
8.6%inclusion3 decks35 decks
-12%synergy
Aminatou's Augury
8.6%inclusion3 decks35 decks
7%synergy
Dance of the Manse
8.6%inclusion3 decks35 decks
5%synergy
Supreme Verdict
5.7%inclusion2 decks35 decks
-9%synergy
Open the Vaults
5.7%inclusion2 decks35 decks
5%synergy
Unearth
5.7%inclusion2 decks35 decks
4%synergy
Glimpse the Unthinkable
5.7%inclusion2 decks35 decks
5%synergy
Zombify
5.7%inclusion2 decks35 decks
5%synergy
Ringsight
5.7%inclusion2 decks35 decks
4%synergy
Traumatize
5.7%inclusion2 decks35 decks
5%synergy
Brilliant Restoration
5.7%inclusion2 decks35 decks
4%synergy
Living Death
5.7%inclusion2 decks35 decks
1%synergy
Utility Artifacts
Keys to the House
20%inclusion7 decks35 decks
20%synergy
Wishclaw Talisman
14%inclusion5 decks35 decks
7%synergy
Swiftfoot Boots
11%inclusion4 decks35 decks
-13%synergy
Cloud Key
8.6%inclusion3 decks35 decks
5%synergy
Soul-Guide Lantern
5.7%inclusion2 decks35 decks
5%synergy
The Everflowing Well
5.7%inclusion2 decks35 decks
5%synergy
Wayfarer's Bauble
5.7%inclusion2 decks35 decks
-1%synergy
Brainstone
5.7%inclusion2 decks35 decks
4%synergy
Planetarium of Wan Shi Tong
5.0%inclusion1 decks20 decks
4%synergy
Enchantments
Dress Down
46%inclusion16 decks35 decks
44%synergy
Ripples of Undeath
43%inclusion15 decks35 decks
40%synergy
Timely Ward
43%inclusion15 decks35 decks
38%synergy
Monologue Tax
43%inclusion15 decks35 decks
36%synergy
Extravagant Replication
40%inclusion14 decks35 decks
35%synergy
Animate Dead
40%inclusion14 decks35 decks
30%synergy
Seal of Cleansing
37%inclusion13 decks35 decks
36%synergy
Shark Typhoon
37%inclusion13 decks35 decks
31%synergy
Cramped Vents // Access Maze
29%inclusion10 decks35 decks
26%synergy
The Eldest Reborn
29%inclusion10 decks35 decks
26%synergy
Amphibian Downpour
29%inclusion10 decks35 decks
24%synergy
Restricted Office // Lecture Hall
29%inclusion10 decks35 decks
27%synergy
Ethereal Armor
29%inclusion10 decks35 decks
24%synergy
One with the Multiverse
26%inclusion9 decks35 decks
21%synergy
Cemetery Tampering
26%inclusion9 decks35 decks
25%synergy
Mirror Room // Fractured Realm
26%inclusion9 decks35 decks
24%synergy
Cast Out
26%inclusion9 decks35 decks
23%synergy
Central Elevator // Promising Stairs
26%inclusion9 decks35 decks
25%synergy
Cacophony Unleashed
23%inclusion8 decks35 decks
21%synergy
Estrid's Invocation
23%inclusion8 decks35 decks
18%synergy
Nowhere to Run
23%inclusion8 decks35 decks
22%synergy
Seal of Removal
23%inclusion8 decks35 decks
22%synergy
Defiled Crypt // Cadaver Lab
23%inclusion8 decks35 decks
22%synergy
Meat Locker // Drowned Diner
20%inclusion7 decks35 decks
20%synergy
Witness Protection
20%inclusion7 decks35 decks
18%synergy
Polluted Cistern // Dim Oubliette
20%inclusion7 decks35 decks
19%synergy
Ghostly Prison
20%inclusion7 decks35 decks
-3%synergy
Phyrexian Arena
20%inclusion7 decks35 decks
6%synergy
All That Glitters
20%inclusion7 decks35 decks
12%synergy
Founding the Third Path
17%inclusion6 decks35 decks
17%synergy
Grasp of Fate
17%inclusion6 decks35 decks
11%synergy
Touch the Spirit Realm
17%inclusion6 decks35 decks
15%synergy
Surgical Suite // Hospital Room
17%inclusion6 decks35 decks
17%synergy
Necromancy
17%inclusion6 decks35 decks
13%synergy
Unable to Scream
17%inclusion6 decks35 decks
16%synergy
Blind Obedience
17%inclusion6 decks35 decks
5%synergy
Secrets of the Dead
17%inclusion6 decks35 decks
17%synergy
Sheltered by Ghosts
17%inclusion6 decks35 decks
14%synergy
Stillness in Motion
16%inclusion5 decks31 decks
16%synergy
Darksteel Mutation
14%inclusion5 decks35 decks
8%synergy
Tinybones Joins Up
14%inclusion5 decks35 decks
13%synergy
Mystic Remora
14%inclusion5 decks35 decks
-6%synergy
Copy Enchantment
14%inclusion5 decks35 decks
9%synergy
The Tale of Tamiyo
14%inclusion5 decks35 decks
14%synergy
Dazzling Theater // Prop Room
14%inclusion5 decks35 decks
13%synergy
Hallowed Haunting
14%inclusion5 decks35 decks
12%synergy
Propaganda
14%inclusion5 decks35 decks
-15%synergy
Static Prison
14%inclusion5 decks35 decks
14%synergy
Trapped in the Screen
11%inclusion4 decks35 decks
11%synergy
Underwater Tunnel // Slimy Aquarium
11%inclusion4 decks35 decks
11%synergy
Battles
Invasion of Theros
5.7%inclusion2 decks35 decks
4%synergy
Utility Lands
Hall of Heliod's Generosity
54%inclusion19 decks35 decks
41%synergy
Bojuka Bog
43%inclusion15 decks35 decks
16%synergy
Halimar Depths
31%inclusion11 decks35 decks
27%synergy
Cephalid Coliseum
14%inclusion5 decks35 decks
11%synergy
Rogue's Passage
11%inclusion4 decks35 decks
2%synergy
Nephalia Drownyard
5.7%inclusion2 decks35 decks
5%synergy
Temple of the False God
5.7%inclusion2 decks35 decks
-2%synergy
Mana Artifacts
Sol Ring
89%inclusion31 decks35 decks
-1%synergy
Arcane Signet
86%inclusion30 decks35 decks
-2%synergy
Azorius Signet
60%inclusion21 decks35 decks
31%synergy
Orzhov Signet
60%inclusion21 decks35 decks
29%synergy
Mind Stone
37%inclusion13 decks35 decks
25%synergy
Talisman of Progress
29%inclusion10 decks35 decks
-16%synergy
Commander's Sphere
29%inclusion10 decks35 decks
11%synergy
Talisman of Dominance
26%inclusion9 decks35 decks
-25%synergy
Talisman of Hierarchy
26%inclusion9 decks35 decks
-19%synergy
Fellwar Stone
23%inclusion8 decks35 decks
-10%synergy
Dimir Signet
20%inclusion7 decks35 decks
-10%synergy
Lands
Swamp
100%inclusion35 decks35 decks
8%synergy
Plains
100%inclusion35 decks35 decks
8%synergy
Island
97%inclusion34 decks35 decks
4%synergy
Command Tower
89%inclusion31 decks35 decks
-4%synergy
Caves of Koilos
80%inclusion28 decks35 decks
44%synergy
Underground River
77%inclusion27 decks35 decks
42%synergy
Arcane Sanctum
71%inclusion25 decks35 decks
18%synergy
Adarkar Wastes
71%inclusion25 decks35 decks
39%synergy
Obscura Storefront
57%inclusion20 decks35 decks
48%synergy
Temple of Silence
57%inclusion20 decks35 decks
39%synergy
Terramorphic Expanse
54%inclusion19 decks35 decks
39%synergy
Orzhov Basilica
54%inclusion19 decks35 decks
40%synergy
Tainted Isle
51%inclusion18 decks35 decks
45%synergy
Azorius Chancery
51%inclusion18 decks35 decks
38%synergy
Temple of Deceit
51%inclusion18 decks35 decks
35%synergy
Tainted Field
51%inclusion18 decks35 decks
45%synergy
Temple of Enlightenment
51%inclusion18 decks35 decks
36%synergy
Dimir Aqueduct
49%inclusion17 decks35 decks
36%synergy
Evolving Wilds
49%inclusion17 decks35 decks
24%synergy
Ash Barrens
40%inclusion14 decks35 decks
29%synergy
Glacial Fortress
34%inclusion12 decks35 decks
-9%synergy
Exotic Orchard
34%inclusion12 decks35 decks
-25%synergy
Thriving Heath
34%inclusion12 decks35 decks
30%synergy
Isolated Chapel
31%inclusion11 decks35 decks
-11%synergy
Thriving Moor
31%inclusion11 decks35 decks
27%synergy
Thriving Isle
29%inclusion10 decks35 decks
24%synergy
Prairie Stream
26%inclusion9 decks35 decks
-15%synergy
Sunken Hollow
26%inclusion9 decks35 decks
-14%synergy
Contaminated Landscape
23%inclusion8 decks35 decks
9%synergy
River of Tears
17%inclusion6 decks35 decks
15%synergy
Drowned Catacomb
17%inclusion6 decks35 decks
-22%synergy
Skycloud Expanse
14%inclusion5 decks35 decks
-1%synergy
Abandoned Campground
11%inclusion4 decks35 decks
11%synergy
Darkwater Catacombs
11%inclusion4 decks35 decks
-3%synergy
Valgavoth's Lair
11%inclusion4 decks35 decks
9%synergy
Dismal Backwater
11%inclusion4 decks35 decks
5%synergy
Spire of Industry
8.6%inclusion3 decks35 decks
1%synergy
Raffine's Tower
8.6%inclusion3 decks35 decks
-32%synergy
Hydroelectric Specimen
8.6%inclusion3 decks35 decks
6%synergy
Scoured Barrens
8.6%inclusion3 decks35 decks
2%synergy
Floodfarm Verge
8.6%inclusion3 decks35 decks
-3%synergy
Choked Estuary
8.6%inclusion3 decks35 decks
-8%synergy
Escape Tunnel
5.7%inclusion2 decks35 decks
5%synergy
Undercity Sewers
5.7%inclusion2 decks35 decks
-9%synergy
Myriad Landscape
5.7%inclusion2 decks35 decks
-2%synergy
Skybridge Towers
5.7%inclusion2 decks35 decks
5%synergy
Dimir Guildgate
5.7%inclusion2 decks35 decks
4%synergy
Tranquil Cove
5.7%inclusion2 decks35 decks
-0%synergy
Fetid Heath
5.7%inclusion2 decks35 decks
-8%synergy
Promising Vein
5.7%inclusion2 decks35 decks
5%synergy
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