The Master of Keys (Commander) - Budget cEDH

The Master of Keys
Rank #302
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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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Splinter's Technique
17%inclusion1 decks6 decks
14%synergy
High Synergy Cards
Animate Dead
95%inclusion56 decks59 decks
85%synergy
Necromancy
85%inclusion50 decks59 decks
80%synergy
Entomb
81%inclusion48 decks59 decks
75%synergy
Abdel Adrian, Gorion's Ward
76%inclusion45 decks59 decks
75%synergy
Dance of the Dead
75%inclusion44 decks59 decks
72%synergy
Dress Down
75%inclusion44 decks59 decks
72%synergy
Dark Ritual
88%inclusion52 decks59 decks
68%synergy
Mystic Remora
88%inclusion52 decks59 decks
67%synergy
Sevinne's Reclamation
76%inclusion45 decks59 decks
67%synergy
Grand Abolisher
80%inclusion47 decks59 decks
65%synergy
Top Cards
Swords to Plowshares
80%inclusion47 decks59 decks
12%synergy
Blind Obedience
73%inclusion43 decks59 decks
61%synergy
Esper Sentinel
73%inclusion43 decks59 decks
46%synergy
Silence
71%inclusion42 decks59 decks
61%synergy
Demonic Consultation
69%inclusion41 decks59 decks
62%synergy
An Offer You Can't Refuse
63%inclusion37 decks59 decks
35%synergy
Tainted Pact
59%inclusion35 decks59 decks
52%synergy
Reanimate
59%inclusion35 decks59 decks
43%synergy
Ripples of Undeath
58%inclusion34 decks59 decks
55%synergy
Swan Song
56%inclusion33 decks59 decks
36%synergy
Game Changers
Enlightened Tutor
80%inclusion47 decks59 decks
60%synergy
Rhystic Study
78%inclusion46 decks59 decks
47%synergy
Demonic Tutor
78%inclusion46 decks59 decks
57%synergy
Smothering Tithe
76%inclusion45 decks59 decks
45%synergy
Thassa's Oracle
75%inclusion44 decks59 decks
65%synergy
Vampiric Tutor
66%inclusion39 decks59 decks
49%synergy
Mana Vault
59%inclusion35 decks59 decks
50%synergy
Necropotence
56%inclusion33 decks59 decks
49%synergy
Mystical Tutor
54%inclusion32 decks59 decks
43%synergy
Chrome Mox
53%inclusion31 decks59 decks
43%synergy
Creatures
Displacer Kitten
54%inclusion32 decks59 decks
47%synergy
Lotho, Corrupt Shirriff
53%inclusion31 decks59 decks
36%synergy
Valley Floodcaller
51%inclusion30 decks59 decks
47%synergy
Orcish Bowmasters
51%inclusion30 decks59 decks
40%synergy
Opposition Agent
44%inclusion26 decks59 decks
36%synergy
Ranger-Captain of Eos
41%inclusion24 decks59 decks
35%synergy
Hullbreaker Horror
39%inclusion23 decks59 decks
33%synergy
Drannith Magistrate
39%inclusion23 decks59 decks
31%synergy
Archivist of Oghma
36%inclusion21 decks59 decks
29%synergy
Lurrus of the Dream-Den
34%inclusion20 decks59 decks
32%synergy
Voice of Victory
28%inclusion10 decks36 decks
19%synergy
Hoarding Broodlord
27%inclusion16 decks59 decks
25%synergy
Ledger Shredder
25%inclusion15 decks59 decks
17%synergy
Hedron Crab
20%inclusion12 decks59 decks
20%synergy
Mockingbird
20%inclusion12 decks59 decks
16%synergy
Entity Tracker
20%inclusion12 decks59 decks
14%synergy
Wan Shi Tong, Librarian
18%inclusion2 decks11 decks
13%synergy
Volatile Stormdrake
17%inclusion10 decks59 decks
16%synergy
Scrabbling Skullcrab
17%inclusion10 decks59 decks
16%synergy
Overlord of the Balemurk
17%inclusion10 decks59 decks
15%synergy
Leonin Relic-Warder
17%inclusion10 decks59 decks
17%synergy
Mesa Enchantress
17%inclusion10 decks59 decks
8%synergy
Starfield Mystic
15%inclusion9 decks59 decks
9%synergy
Talion, the Kindly Lord
15%inclusion9 decks59 decks
8%synergy
Faerie Mastermind
15%inclusion9 decks59 decks
6%synergy
Grim Guardian
15%inclusion9 decks59 decks
13%synergy
Phyrexian Metamorph
14%inclusion8 decks59 decks
5%synergy
Demon of Fate's Design
14%inclusion8 decks59 decks
8%synergy
Pollywog Prodigy
14%inclusion8 decks59 decks
10%synergy
Dauthi Voidwalker
14%inclusion8 decks59 decks
8%synergy
Inquisitive Glimmer
14%inclusion8 decks59 decks
6%synergy
Zur the Enchanter
14%inclusion8 decks59 decks
8%synergy
Tataru Taru
12%inclusion3 decks25 decks
4%synergy
Overlord of the Floodpits
12%inclusion7 decks59 decks
8%synergy
Balemurk Leech
12%inclusion7 decks59 decks
11%synergy
Ondu Spiritdancer
12%inclusion7 decks59 decks
6%synergy
High Fae Trickster
11%inclusion6 decks53 decks
7%synergy
Gravebreaker Lamia
10%inclusion6 decks59 decks
9%synergy
Sage of Mysteries
10%inclusion6 decks59 decks
10%synergy
Doomwake Giant
10%inclusion6 decks59 decks
4%synergy
Auriok Salvagers
10%inclusion6 decks59 decks
10%synergy
The Unagi of Kyoshi Island
9.1%inclusion1 decks11 decks
8%synergy
Notion Thief
8.5%inclusion5 decks59 decks
2%synergy
Walking Ballista
8.5%inclusion5 decks59 decks
6%synergy
Vile Entomber
8.5%inclusion5 decks59 decks
8%synergy
Spellseeker
8.5%inclusion5 decks59 decks
7%synergy
Fear of Sleep Paralysis
8.5%inclusion5 decks59 decks
3%synergy
Zur, Eternal Schemer
8.5%inclusion5 decks59 decks
5%synergy
Emet-Selch of the Third Seat
8.0%inclusion2 decks25 decks
-1%synergy
Witch Enchanter
6.8%inclusion4 decks59 decks
0%synergy
Instants
Flusterstorm
54%inclusion32 decks59 decks
46%synergy
Force of Will
49%inclusion29 decks59 decks
37%synergy
Mindbreak Trap
47%inclusion28 decks59 decks
41%synergy
Mental Misstep
47%inclusion28 decks59 decks
41%synergy
Force of Negation
47%inclusion28 decks59 decks
36%synergy
Pact of Negation
46%inclusion27 decks59 decks
38%synergy
Borne Upon a Wind
44%inclusion26 decks59 decks
39%synergy
Fierce Guardianship
41%inclusion24 decks59 decks
20%synergy
Cyclonic Rift
39%inclusion23 decks59 decks
16%synergy
Cabal Ritual
34%inclusion20 decks59 decks
31%synergy
Gifts Ungiven
31%inclusion18 decks59 decks
28%synergy
Into the Flood Maw
29%inclusion17 decks59 decks
25%synergy
Mana Drain
29%inclusion17 decks59 decks
12%synergy
Chain of Vapor
27%inclusion16 decks59 decks
24%synergy
Sink into Stupor
25%inclusion15 decks59 decks
13%synergy
Path to Exile
25%inclusion15 decks59 decks
-17%synergy
Dispel
22%inclusion13 decks59 decks
19%synergy
Saw in Half
22%inclusion13 decks59 decks
20%synergy
Dovin's Veto
20%inclusion12 decks59 decks
-5%synergy
Intuition
20%inclusion12 decks59 decks
19%synergy
Sacrifice
19%inclusion11 decks59 decks
18%synergy
Arcane Denial
19%inclusion11 decks59 decks
-2%synergy
Counterspell
19%inclusion11 decks59 decks
-23%synergy
Muddle the Mixture
17%inclusion10 decks59 decks
13%synergy
Frantic Search
17%inclusion10 decks59 decks
-1%synergy
Retraction Helix
14%inclusion8 decks59 decks
13%synergy
Deadly Rollick
12%inclusion7 decks59 decks
-3%synergy
Spell Pierce
12%inclusion7 decks59 decks
9%synergy
Fact or Fiction
12%inclusion7 decks59 decks
8%synergy
Culling the Weak
10%inclusion6 decks59 decks
9%synergy
Dramatic Reversal
10%inclusion6 decks59 decks
8%synergy
Brain Freeze
10%inclusion6 decks59 decks
10%synergy
Ad Nauseam
10%inclusion6 decks59 decks
8%synergy
Drown in the Loch
8.5%inclusion5 decks59 decks
7%synergy
Strix Serenade
8.5%inclusion5 decks59 decks
5%synergy
Fell the Profane
8.5%inclusion5 decks59 decks
0%synergy
Anguished Unmaking
8.5%inclusion5 decks59 decks
-17%synergy
Orim's Chant
8.5%inclusion5 decks59 decks
7%synergy
Brainstorm
8.5%inclusion5 decks59 decks
-8%synergy
Lim-Dûl's Vault
8.5%inclusion5 decks59 decks
5%synergy
Delay
8.5%inclusion5 decks59 decks
6%synergy
Hide on the Ceiling
7.7%inclusion1 decks13 decks
7%synergy
Teferi's Protection
6.8%inclusion4 decks59 decks
-10%synergy
Negate
6.8%inclusion4 decks59 decks
-10%synergy
Hostile Negotiations
6.8%inclusion4 decks59 decks
6%synergy
Miscast
6.8%inclusion4 decks59 decks
6%synergy
Waterlogged Teachings
6.8%inclusion4 decks59 decks
2%synergy
Shred Memory
6.8%inclusion4 decks59 decks
6%synergy
Flare of Denial
6.8%inclusion4 decks59 decks
5%synergy
Void Rend
5.1%inclusion3 decks59 decks
-29%synergy
Sorceries
Windfall
49%inclusion29 decks59 decks
36%synergy
Toxic Deluge
41%inclusion24 decks59 decks
21%synergy
Lively Dirge
27%inclusion16 decks59 decks
26%synergy
Imperial Seal
27%inclusion16 decks59 decks
20%synergy
Unmarked Grave
22%inclusion13 decks59 decks
21%synergy
Buried Alive
20%inclusion12 decks59 decks
16%synergy
Demonic Counsel
20%inclusion12 decks59 decks
19%synergy
Beseech the Mirror
19%inclusion11 decks59 decks
15%synergy
Final Parting
12%inclusion7 decks59 decks
11%synergy
Victimize
12%inclusion7 decks59 decks
3%synergy
Damn
12%inclusion7 decks59 decks
-8%synergy
Mnemonic Betrayal
10%inclusion6 decks59 decks
7%synergy
Diabolic Intent
10%inclusion6 decks59 decks
5%synergy
Avatar's Wrath
9.1%inclusion1 decks11 decks
7%synergy
Grim Tutor
8.5%inclusion5 decks59 decks
4%synergy
Villainous Wrath
7.7%inclusion1 decks13 decks
7%synergy
Cabal Therapy
6.8%inclusion4 decks59 decks
7%synergy
Peer into the Abyss
6.8%inclusion4 decks59 decks
4%synergy
Replenish
6.8%inclusion4 decks59 decks
5%synergy
Careful Study
6.8%inclusion4 decks59 decks
5%synergy
Persist
6.8%inclusion4 decks59 decks
5%synergy
Redress Fate
6.8%inclusion4 decks59 decks
1%synergy
Singularity Rupture
5.6%inclusion1 decks18 decks
3%synergy
Ponder
5.1%inclusion3 decks59 decks
-4%synergy
Yahenni's Expertise
5.1%inclusion3 decks59 decks
4%synergy
Dread Return
5.1%inclusion3 decks59 decks
2%synergy
Dance of the Manse
5.1%inclusion3 decks59 decks
2%synergy
Fabricate
5.1%inclusion3 decks59 decks
0%synergy
Utility Artifacts
Wishclaw Talisman
56%inclusion33 decks59 decks
48%synergy
The One Ring
47%inclusion28 decks59 decks
35%synergy
Cursed Totem
15%inclusion9 decks59 decks
13%synergy
Mesmeric Orb
14%inclusion8 decks59 decks
12%synergy
Altar of Dementia
10%inclusion6 decks59 decks
9%synergy
Isochron Scepter
10%inclusion6 decks59 decks
8%synergy
Collector's Vault
6.8%inclusion4 decks59 decks
5%synergy
Vexing Bauble
6.8%inclusion4 decks59 decks
5%synergy
Lightning Greaves
5.1%inclusion3 decks59 decks
-18%synergy
Sensei's Divining Top
5.1%inclusion3 decks59 decks
-4%synergy
Mindcrank
5.1%inclusion3 decks59 decks
3%synergy
Altar of the Brood
5.1%inclusion3 decks59 decks
4%synergy
Enchantments
Tinybones Joins Up
53%inclusion31 decks59 decks
51%synergy
Amphibian Downpour
51%inclusion30 decks59 decks
46%synergy
Mirrormade
41%inclusion24 decks59 decks
31%synergy
Touch the Spirit Realm
37%inclusion22 decks59 decks
35%synergy
Static Prison
24%inclusion14 decks59 decks
23%synergy
Chthonian Nightmare
22%inclusion13 decks59 decks
21%synergy
The Meathook Massacre
20%inclusion12 decks59 decks
17%synergy
Copy Enchantment
19%inclusion11 decks59 decks
14%synergy
Monologue Tax
17%inclusion10 decks59 decks
11%synergy
Secret Arcade // Dusty Parlor
15%inclusion9 decks59 decks
11%synergy
Trouble in Pairs
15%inclusion9 decks59 decks
10%synergy
Steal Enchantment
14%inclusion8 decks59 decks
13%synergy
Copy Artifact
14%inclusion8 decks59 decks
12%synergy
Leyline of Anticipation
12%inclusion7 decks59 decks
7%synergy
Out of the Tombs
12%inclusion7 decks59 decks
11%synergy
Darksteel Mutation
10%inclusion6 decks59 decks
4%synergy
Sphere of Safety
10%inclusion6 decks59 decks
1%synergy
Second Chance
10%inclusion6 decks59 decks
10%synergy
Counterbalance
8.5%inclusion5 decks59 decks
7%synergy
Out of Time
8.5%inclusion5 decks59 decks
7%synergy
Seal of Removal
8.5%inclusion5 decks59 decks
8%synergy
Seal of Cleansing
8.5%inclusion5 decks59 decks
7%synergy
Propaganda
8.5%inclusion5 decks59 decks
-20%synergy
Land Tax
8.5%inclusion5 decks59 decks
3%synergy
Founding the Third Path
6.8%inclusion4 decks59 decks
7%synergy
Sigil of the Empty Throne
6.8%inclusion4 decks59 decks
1%synergy
Starfield of Nyx
6.8%inclusion4 decks59 decks
3%synergy
Fraying Sanity
6.8%inclusion4 decks59 decks
6%synergy
Greater Auramancy
6.8%inclusion4 decks59 decks
2%synergy
Aura of Silence
6.8%inclusion4 decks59 decks
4%synergy
Cacophony Unleashed
6.8%inclusion4 decks59 decks
5%synergy
Estrid's Invocation
6.8%inclusion4 decks59 decks
2%synergy
Verity Circle
6.8%inclusion4 decks59 decks
6%synergy
Ghostly Prison
5.1%inclusion3 decks59 decks
-17%synergy
Smuggler's Share
5.1%inclusion3 decks59 decks
3%synergy
Grasp of Fate
5.1%inclusion3 decks59 decks
-1%synergy
Authority of the Consuls
5.1%inclusion3 decks59 decks
-7%synergy
Enchanted Evening
5.1%inclusion3 decks59 decks
4%synergy
Bloodchief Ascension
5.1%inclusion3 decks59 decks
-1%synergy
Unable to Scream
5.1%inclusion3 decks59 decks
4%synergy
Arguel's Blood Fast
5.1%inclusion3 decks59 decks
5%synergy
Black Market Connections
5.1%inclusion3 decks59 decks
-9%synergy
Planeswalkers
Teferi, Time Raveler
54%inclusion32 decks59 decks
46%synergy
Ashiok, Dream Render
8.5%inclusion5 decks59 decks
7%synergy
Jace, Wielder of Mysteries
5.1%inclusion3 decks59 decks
3%synergy
Utility Lands
Otawara, Soaring City
46%inclusion27 decks59 decks
27%synergy
Ancient Tomb
41%inclusion24 decks59 decks
28%synergy
Hall of Heliod's Generosity
27%inclusion16 decks59 decks
14%synergy
Cephalid Coliseum
27%inclusion16 decks59 decks
24%synergy
Urza's Saga
24%inclusion14 decks59 decks
12%synergy
Emergence Zone
20%inclusion12 decks59 decks
18%synergy
Takenuma, Abandoned Mire
15%inclusion9 decks59 decks
9%synergy
Bojuka Bog
15%inclusion9 decks59 decks
-12%synergy
Urborg, Tomb of Yawgmoth
14%inclusion8 decks59 decks
0%synergy
Minamo, School at Water's Edge
12%inclusion7 decks59 decks
8%synergy
Realm of Koh
9.1%inclusion1 decks11 decks
9%synergy
Cabal Pit
6.8%inclusion4 decks59 decks
7%synergy
Reliquary Tower
6.8%inclusion4 decks59 decks
-27%synergy
Cabal Coffers
6.8%inclusion4 decks59 decks
4%synergy
Phyrexian Tower
5.1%inclusion3 decks59 decks
1%synergy
Serra's Sanctum
5.1%inclusion3 decks59 decks
3%synergy
Shizo, Death's Storehouse
5.1%inclusion3 decks59 decks
3%synergy
Eiganjo, Seat of the Empire
5.1%inclusion3 decks59 decks
0%synergy
Mana Artifacts
Sol Ring
98%inclusion58 decks59 decks
8%synergy
Arcane Signet
97%inclusion57 decks59 decks
9%synergy
Talisman of Dominance
81%inclusion48 decks59 decks
32%synergy
Talisman of Progress
73%inclusion43 decks59 decks
29%synergy
Fellwar Stone
71%inclusion42 decks59 decks
38%synergy
Lotus Petal
69%inclusion41 decks59 decks
59%synergy
Talisman of Hierarchy
68%inclusion40 decks59 decks
24%synergy
Mox Opal
31%inclusion18 decks59 decks
22%synergy
Mox Amber
27%inclusion16 decks59 decks
21%synergy
Azorius Signet
24%inclusion14 decks59 decks
-7%synergy
Orzhov Signet
22%inclusion13 decks59 decks
-11%synergy
Dimir Signet
20%inclusion12 decks59 decks
-11%synergy
The Soul Stone
7.1%inclusion1 decks14 decks
4%synergy
Thought Vessel
5.1%inclusion3 decks59 decks
-20%synergy
Basalt Monolith
5.1%inclusion3 decks59 decks
3%synergy
Lands
Command Tower
93%inclusion55 decks59 decks
1%synergy
Island
88%inclusion52 decks59 decks
-5%synergy
Swamp
86%inclusion51 decks59 decks
-5%synergy
Godless Shrine
81%inclusion48 decks59 decks
30%synergy
Plains
80%inclusion47 decks59 decks
-12%synergy
Watery Grave
76%inclusion45 decks59 decks
26%synergy
Hallowed Fountain
75%inclusion44 decks59 decks
24%synergy
Polluted Delta
71%inclusion42 decks59 decks
33%synergy
Marsh Flats
69%inclusion41 decks59 decks
33%synergy
Flooded Strand
66%inclusion39 decks59 decks
28%synergy
Exotic Orchard
58%inclusion34 decks59 decks
-1%synergy
Vault of Champions
56%inclusion33 decks59 decks
24%synergy
Sea of Clouds
54%inclusion32 decks59 decks
19%synergy
City of Brass
53%inclusion31 decks59 decks
38%synergy
Morphic Pool
51%inclusion30 decks59 decks
17%synergy
Caves of Koilos
49%inclusion29 decks59 decks
14%synergy
Adarkar Wastes
47%inclusion28 decks59 decks
16%synergy
Underground River
46%inclusion27 decks59 decks
12%synergy
Bloodstained Mire
44%inclusion26 decks59 decks
33%synergy
Verdant Catacombs
44%inclusion26 decks59 decks
34%synergy
Windswept Heath
42%inclusion25 decks59 decks
33%synergy
Gemstone Caverns
41%inclusion24 decks59 decks
33%synergy
Misty Rainforest
39%inclusion23 decks59 decks
28%synergy
Arid Mesa
37%inclusion22 decks59 decks
28%synergy
Mana Confluence
36%inclusion21 decks59 decks
22%synergy
Undercity Sewers
36%inclusion21 decks59 decks
21%synergy
Scalding Tarn
36%inclusion21 decks59 decks
25%synergy
Raffine's Tower
32%inclusion19 decks59 decks
-9%synergy
Shadowy Backstreet
29%inclusion17 decks59 decks
16%synergy
Meticulous Archive
27%inclusion16 decks59 decks
13%synergy
Sink into Stupor
25%inclusion15 decks59 decks
13%synergy
Arcane Sanctum
20%inclusion12 decks59 decks
-34%synergy
Forbidden Orchard
19%inclusion11 decks59 decks
16%synergy
Gloomlake Verge
19%inclusion11 decks59 decks
8%synergy
Spire of Industry
19%inclusion11 decks59 decks
11%synergy
Reflecting Pool
19%inclusion11 decks59 decks
11%synergy
Isolated Chapel
19%inclusion11 decks59 decks
-22%synergy
Floodfarm Verge
19%inclusion11 decks59 decks
8%synergy
Glacial Fortress
17%inclusion10 decks59 decks
-25%synergy
Drowned Catacomb
17%inclusion10 decks59 decks
-20%synergy
Abundant Countryside
17%inclusion1 decks6 decks
16%synergy
Prairie Stream
15%inclusion9 decks59 decks
-25%synergy
Shattered Sanctum
15%inclusion9 decks59 decks
-1%synergy
Sunken Hollow
14%inclusion8 decks59 decks
-26%synergy
Bleachbone Verge
12%inclusion6 decks49 decks
4%synergy
Cavern of Souls
12%inclusion7 decks59 decks
5%synergy
Snow-Covered Swamp
12%inclusion7 decks59 decks
9%synergy
Deserted Beach
12%inclusion7 decks59 decks
-9%synergy
Snow-Covered Island
10%inclusion6 decks59 decks
7%synergy
Contaminated Landscape
10%inclusion6 decks59 decks
-4%synergy
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