The Master of Keys (Commander) - Combo

The Master of Keys
Rank #303
236decks
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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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Utility Lands
Mana Artifacts
Lands
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The Mind Stone
2.8%inclusion1 decks36 decks
2%synergy
High Synergy Cards
Animate Dead
90%inclusion213 decks236 decks
81%synergy
Necromancy
82%inclusion194 decks236 decks
78%synergy
Abdel Adrian, Gorion's Ward
73%inclusion173 decks236 decks
72%synergy
Dress Down
73%inclusion172 decks236 decks
71%synergy
Entomb
75%inclusion177 decks236 decks
68%synergy
Dance of the Dead
65%inclusion154 decks236 decks
63%synergy
Mystic Remora
83%inclusion197 decks236 decks
63%synergy
Sevinne's Reclamation
66%inclusion155 decks236 decks
57%synergy
Ripples of Undeath
55%inclusion130 decks236 decks
52%synergy
Dark Ritual
69%inclusion163 decks236 decks
49%synergy
Top Cards
Esper Sentinel
68%inclusion161 decks236 decks
41%synergy
Swan Song
64%inclusion152 decks236 decks
44%synergy
Swords to Plowshares
63%inclusion148 decks236 decks
-5%synergy
Silence
58%inclusion138 decks236 decks
49%synergy
Blind Obedience
57%inclusion135 decks236 decks
45%synergy
Grand Abolisher
57%inclusion134 decks236 decks
42%synergy
Demonic Consultation
56%inclusion132 decks236 decks
48%synergy
Tainted Pact
55%inclusion129 decks236 decks
48%synergy
Force of Negation
55%inclusion129 decks236 decks
43%synergy
Lotho, Corrupt Shirriff
53%inclusion125 decks236 decks
36%synergy
Game Changers
Rhystic Study
75%inclusion176 decks236 decks
44%synergy
Smothering Tithe
73%inclusion172 decks236 decks
43%synergy
Enlightened Tutor
70%inclusion165 decks236 decks
51%synergy
Demonic Tutor
67%inclusion159 decks236 decks
47%synergy
Thassa's Oracle
67%inclusion157 decks236 decks
58%synergy
Vampiric Tutor
64%inclusion152 decks236 decks
48%synergy
Ancient Tomb
60%inclusion141 decks236 decks
47%synergy
Mana Vault
59%inclusion140 decks236 decks
51%synergy
Force of Will
59%inclusion139 decks236 decks
47%synergy
Chrome Mox
56%inclusion132 decks236 decks
47%synergy
Creatures
Orcish Bowmasters
53%inclusion125 decks236 decks
43%synergy
Ranger-Captain of Eos
48%inclusion113 decks236 decks
42%synergy
Valley Floodcaller
47%inclusion112 decks236 decks
44%synergy
Displacer Kitten
39%inclusion92 decks236 decks
32%synergy
Hullbreaker Horror
38%inclusion90 decks236 decks
32%synergy
Opposition Agent
33%inclusion77 decks236 decks
25%synergy
Mockingbird
32%inclusion76 decks236 decks
28%synergy
Voice of Victory
31%inclusion48 decks153 decks
23%synergy
Wan Shi Tong, Librarian
31%inclusion25 decks80 decks
26%synergy
Inquisitive Glimmer
28%inclusion67 decks236 decks
21%synergy
Entity Tracker
28%inclusion67 decks236 decks
22%synergy
Archivist of Oghma
28%inclusion66 decks236 decks
22%synergy
Lurrus of the Dream-Den
28%inclusion65 decks236 decks
26%synergy
Auriok Salvagers
25%inclusion58 decks236 decks
24%synergy
Ledger Shredder
24%inclusion56 decks236 decks
15%synergy
Scrabbling Skullcrab
23%inclusion54 decks236 decks
22%synergy
Drannith Magistrate
22%inclusion53 decks236 decks
15%synergy
Mesa Enchantress
22%inclusion52 decks236 decks
13%synergy
Gravebreaker Lamia
21%inclusion50 decks236 decks
20%synergy
Hedron Crab
20%inclusion48 decks236 decks
20%synergy
Demon of Fate's Design
20%inclusion47 decks236 decks
15%synergy
Overlord of the Balemurk
19%inclusion46 decks236 decks
18%synergy
Starfield Mystic
19%inclusion45 decks236 decks
13%synergy
Grim Guardian
19%inclusion45 decks236 decks
17%synergy
Tataru Taru
18%inclusion23 decks126 decks
10%synergy
Exhibition Tidecaller
18%inclusion9 decks51 decks
17%synergy
Phyrexian Metamorph
17%inclusion41 decks236 decks
9%synergy
Faerie Mastermind
17%inclusion41 decks236 decks
8%synergy
Fear of Impostors
17%inclusion40 decks236 decks
16%synergy
Talion, the Kindly Lord
17%inclusion40 decks236 decks
10%synergy
Overlord of the Floodpits
15%inclusion36 decks236 decks
12%synergy
Fear of Sleep Paralysis
15%inclusion35 decks236 decks
10%synergy
Ondu Spiritdancer
14%inclusion33 decks236 decks
8%synergy
Doomwake Giant
14%inclusion32 decks236 decks
8%synergy
Psychic Frog
14%inclusion32 decks236 decks
6%synergy
Zur, Eternal Schemer
13%inclusion31 decks236 decks
10%synergy
Zur the Enchanter
13%inclusion31 decks236 decks
8%synergy
Victor, Valgavoth's Seneschal
12%inclusion28 decks236 decks
10%synergy
Leonin Relic-Warder
11%inclusion27 decks236 decks
11%synergy
Ghostly Dancers
11%inclusion27 decks236 decks
9%synergy
Moon-Blessed Cleric
11%inclusion25 decks236 decks
6%synergy
Ghostly Pilferer
11%inclusion25 decks236 decks
3%synergy
Pollywog Prodigy
10%inclusion24 decks236 decks
7%synergy
Laboratory Maniac
10%inclusion23 decks236 decks
7%synergy
Heliod, the Radiant Dawn
10%inclusion23 decks236 decks
6%synergy
Enduring Curiosity
9.3%inclusion22 decks236 decks
1%synergy
Snapcaster Mage
8.5%inclusion20 decks236 decks
6%synergy
Gremlin Tamer
8.1%inclusion19 decks236 decks
7%synergy
Hoarding Broodlord
7.6%inclusion18 decks236 decks
6%synergy
Sage of Mysteries
7.2%inclusion17 decks236 decks
7%synergy
Instants
Flusterstorm
53%inclusion125 decks236 decks
45%synergy
An Offer You Can't Refuse
49%inclusion116 decks236 decks
21%synergy
Mystical Tutor
48%inclusion114 decks236 decks
38%synergy
Fierce Guardianship
47%inclusion111 decks236 decks
27%synergy
Mindbreak Trap
47%inclusion110 decks236 decks
40%synergy
Pact of Negation
47%inclusion110 decks236 decks
39%synergy
Mental Misstep
46%inclusion109 decks236 decks
40%synergy
Intuition
45%inclusion107 decks236 decks
44%synergy
Borne Upon a Wind
45%inclusion106 decks236 decks
40%synergy
Cyclonic Rift
42%inclusion100 decks236 decks
20%synergy
Cabal Ritual
42%inclusion98 decks236 decks
38%synergy
Sink into Stupor
30%inclusion70 decks236 decks
17%synergy
Chain of Vapor
27%inclusion63 decks236 decks
24%synergy
Mana Drain
27%inclusion63 decks236 decks
9%synergy
Gifts Ungiven
26%inclusion61 decks236 decks
23%synergy
Into the Flood Maw
26%inclusion61 decks236 decks
22%synergy
Counterspell
22%inclusion51 decks236 decks
-20%synergy
Path to Exile
19%inclusion45 decks236 decks
-23%synergy
Dovin's Veto
17%inclusion39 decks236 decks
-10%synergy
Brain Freeze
15%inclusion35 decks236 decks
14%synergy
Retraction Helix
13%inclusion31 decks236 decks
12%synergy
Ad Nauseam
13%inclusion30 decks236 decks
11%synergy
Culling the Weak
12%inclusion29 decks236 decks
11%synergy
Arcane Denial
11%inclusion27 decks236 decks
-9%synergy
Brainstorm
10%inclusion24 decks236 decks
-7%synergy
Frantic Search
10%inclusion23 decks236 decks
-9%synergy
Muddle the Mixture
9.3%inclusion22 decks236 decks
6%synergy
Deadly Rollick
8.9%inclusion21 decks236 decks
-7%synergy
Darkblast
8.9%inclusion21 decks236 decks
9%synergy
Dispel
8.9%inclusion21 decks236 decks
6%synergy
Banishing Knack
8.5%inclusion20 decks236 decks
8%synergy
Orim's Chant
7.6%inclusion18 decks236 decks
6%synergy
Void Rend
7.6%inclusion18 decks236 decks
-27%synergy
Teferi's Protection
6.8%inclusion16 decks236 decks
-9%synergy
Strix Serenade
6.8%inclusion16 decks236 decks
3%synergy
Saw in Half
6.8%inclusion16 decks236 decks
5%synergy
Fell the Profane
6.4%inclusion15 decks236 decks
-3%synergy
Sacrifice
5.9%inclusion14 decks236 decks
5%synergy
Lim-Dûl's Vault
5.9%inclusion14 decks236 decks
3%synergy
Thirst for Meaning
5.9%inclusion14 decks236 decks
4%synergy
Negate
5.5%inclusion13 decks236 decks
-11%synergy
Angel's Grace
5.5%inclusion13 decks236 decks
3%synergy
Inkshield
5.1%inclusion12 decks236 decks
-5%synergy
Sorceries
Imperial Seal
45%inclusion107 decks236 decks
38%synergy
Reanimate
36%inclusion84 decks236 decks
19%synergy
Toxic Deluge
32%inclusion75 decks236 decks
12%synergy
Windfall
28%inclusion65 decks236 decks
14%synergy
Lively Dirge
22%inclusion51 decks236 decks
20%synergy
Beseech the Mirror
18%inclusion42 decks236 decks
14%synergy
Demonic Counsel
14%inclusion34 decks236 decks
13%synergy
Unmarked Grave
13%inclusion31 decks236 decks
12%synergy
Mnemonic Betrayal
13%inclusion30 decks236 decks
10%synergy
Singularity Rupture
10%inclusion11 decks108 decks
8%synergy
Diabolic Intent
9.3%inclusion22 decks236 decks
5%synergy
Redress Fate
8.9%inclusion21 decks236 decks
4%synergy
Buried Alive
8.5%inclusion20 decks236 decks
4%synergy
Idyllic Tutor
8.1%inclusion19 decks236 decks
4%synergy
Yawgmoth's Will
7.6%inclusion18 decks236 decks
6%synergy
Cabal Therapy
6.8%inclusion16 decks236 decks
7%synergy
Damn
6.4%inclusion15 decks236 decks
-14%synergy
Grim Tutor
6.4%inclusion15 decks236 decks
2%synergy
Glimpse the Unthinkable
5.9%inclusion14 decks236 decks
5%synergy
Praetor's Grasp
5.9%inclusion14 decks236 decks
3%synergy
Extinguish All Hope
5.9%inclusion14 decks236 decks
4%synergy
Dance of the Manse
5.9%inclusion14 decks236 decks
3%synergy
Space-Time Anomaly
5.7%inclusion6 decks106 decks
4%synergy
Supreme Verdict
5.5%inclusion13 decks236 decks
-9%synergy
Utility Artifacts
The One Ring
46%inclusion108 decks236 decks
33%synergy
Wishclaw Talisman
42%inclusion99 decks236 decks
34%synergy
Mesmeric Orb
12%inclusion28 decks236 decks
11%synergy
Cursed Totem
6.4%inclusion15 decks236 decks
4%synergy
Sensei's Divining Top
5.5%inclusion13 decks236 decks
-4%synergy
Enchantments
Necropotence
48%inclusion114 decks236 decks
42%synergy
Tinybones Joins Up
46%inclusion108 decks236 decks
45%synergy
Amphibian Downpour
44%inclusion103 decks236 decks
39%synergy
Mirrormade
40%inclusion95 decks236 decks
30%synergy
Touch the Spirit Realm
38%inclusion90 decks236 decks
36%synergy
The Meathook Massacre
30%inclusion70 decks236 decks
26%synergy
Static Prison
25%inclusion59 decks236 decks
25%synergy
Seal of Cleansing
20%inclusion48 decks236 decks
19%synergy
Propaganda
20%inclusion48 decks236 decks
-9%synergy
Copy Artifact
19%inclusion46 decks236 decks
18%synergy
Grasp of Fate
19%inclusion45 decks236 decks
13%synergy
Sphere of Safety
19%inclusion45 decks236 decks
10%synergy
Ghostly Prison
17%inclusion40 decks236 decks
-6%synergy
Copy Enchantment
16%inclusion38 decks236 decks
11%synergy
Secret Arcade // Dusty Parlor
15%inclusion35 decks236 decks
10%synergy
Chthonian Nightmare
14%inclusion33 decks236 decks
13%synergy
Trouble in Pairs
14%inclusion33 decks236 decks
9%synergy
Founding the Third Path
14%inclusion32 decks236 decks
13%synergy
Estrid's Invocation
14%inclusion32 decks236 decks
9%synergy
Monologue Tax
14%inclusion32 decks236 decks
7%synergy
Seal of Removal
14%inclusion32 decks236 decks
13%synergy
Stillness in Motion
14%inclusion20 decks148 decks
13%synergy
Steal Enchantment
13%inclusion31 decks236 decks
12%synergy
Cemetery Tampering
13%inclusion31 decks236 decks
12%synergy
Leyline of Anticipation
12%inclusion29 decks236 decks
8%synergy
Counterbalance
12%inclusion28 decks236 decks
10%synergy
Starfield of Nyx
11%inclusion27 decks236 decks
7%synergy
Out of the Tombs
11%inclusion25 decks236 decks
10%synergy
Teval's Judgment
11%inclusion16 decks152 decks
10%synergy
Sigil of the Empty Throne
10%inclusion23 decks236 decks
4%synergy
Greater Auramancy
8.5%inclusion20 decks236 decks
4%synergy
Aura of Silence
8.5%inclusion20 decks236 decks
5%synergy
Darksteel Mutation
8.1%inclusion19 decks236 decks
2%synergy
Court of Cunning
8.1%inclusion19 decks236 decks
7%synergy
The Tale of Tamiyo
8.1%inclusion19 decks236 decks
8%synergy
Enchanted Evening
8.1%inclusion19 decks236 decks
7%synergy
Changing Loyalty
8.0%inclusion4 decks50 decks
7%synergy
Sheltered by Ghosts
7.6%inclusion18 decks236 decks
5%synergy
Chains of Mephistopheles
7.6%inclusion18 decks236 decks
7%synergy
Cacophony Unleashed
7.2%inclusion17 decks236 decks
5%synergy
Black Market Connections
7.2%inclusion17 decks236 decks
-8%synergy
Phyrexian Arena
7.2%inclusion17 decks236 decks
-7%synergy
Authority of the Consuls
6.8%inclusion16 decks236 decks
-7%synergy
Nowhere to Run
6.8%inclusion16 decks236 decks
6%synergy
Imprisoned in the Moon
6.4%inclusion15 decks236 decks
-0%synergy
All That Glitters
6.4%inclusion15 decks236 decks
-2%synergy
Noggle the Mind
6.0%inclusion4 decks67 decks
5%synergy
Dance of Many
5.9%inclusion14 decks236 decks
6%synergy
Out of Time
5.5%inclusion13 decks236 decks
5%synergy
Timely Ward
5.5%inclusion13 decks236 decks
1%synergy
Planeswalkers
Teferi, Time Raveler
37%inclusion87 decks236 decks
29%synergy
Utility Lands
Otawara, Soaring City
62%inclusion146 decks236 decks
43%synergy
Hall of Heliod's Generosity
31%inclusion74 decks236 decks
18%synergy
Urza's Saga
30%inclusion70 decks236 decks
18%synergy
Emergence Zone
20%inclusion48 decks236 decks
18%synergy
Cephalid Coliseum
19%inclusion44 decks236 decks
15%synergy
Bojuka Bog
16%inclusion38 decks236 decks
-11%synergy
Takenuma, Abandoned Mire
16%inclusion38 decks236 decks
10%synergy
Minamo, School at Water's Edge
13%inclusion31 decks236 decks
9%synergy
Serra's Sanctum
10%inclusion24 decks236 decks
8%synergy
Urborg, Tomb of Yawgmoth
9.3%inclusion22 decks236 decks
-4%synergy
City of Traitors
8.9%inclusion21 decks236 decks
8%synergy
Phyrexian Tower
5.5%inclusion13 decks236 decks
2%synergy
Reliquary Tower
5.5%inclusion13 decks236 decks
-28%synergy
Mana Artifacts
Sol Ring
96%inclusion226 decks236 decks
6%synergy
Arcane Signet
93%inclusion220 decks236 decks
6%synergy
Talisman of Dominance
72%inclusion171 decks236 decks
22%synergy
Lotus Petal
59%inclusion140 decks236 decks
49%synergy
Fellwar Stone
59%inclusion139 decks236 decks
26%synergy
Talisman of Progress
56%inclusion132 decks236 decks
12%synergy
Mox Diamond
47%inclusion112 decks236 decks
41%synergy
Mox Opal
45%inclusion107 decks236 decks
37%synergy
Talisman of Hierarchy
43%inclusion101 decks236 decks
-2%synergy
Lion's Eye Diamond
39%inclusion92 decks236 decks
37%synergy
Mox Amber
27%inclusion63 decks236 decks
21%synergy
Grim Monolith
23%inclusion54 decks236 decks
20%synergy
Orzhov Signet
14%inclusion34 decks236 decks
-17%synergy
Azorius Signet
14%inclusion34 decks236 decks
-15%synergy
Dimir Signet
14%inclusion32 decks236 decks
-16%synergy
Mind Stone
5.9%inclusion14 decks236 decks
-6%synergy
Basalt Monolith
5.5%inclusion13 decks236 decks
3%synergy
Lands
Command Tower
97%inclusion228 decks236 decks
4%synergy
Hallowed Fountain
81%inclusion192 decks236 decks
30%synergy
Watery Grave
81%inclusion192 decks236 decks
30%synergy
Godless Shrine
80%inclusion189 decks236 decks
28%synergy
Flooded Strand
80%inclusion189 decks236 decks
42%synergy
Polluted Delta
79%inclusion186 decks236 decks
41%synergy
Marsh Flats
74%inclusion174 decks236 decks
38%synergy
Island
67%inclusion159 decks236 decks
-26%synergy
Swamp
66%inclusion155 decks236 decks
-26%synergy
Exotic Orchard
64%inclusion150 decks236 decks
5%synergy
City of Brass
60%inclusion142 decks236 decks
45%synergy
Plains
58%inclusion138 decks236 decks
-34%synergy
Mana Confluence
56%inclusion133 decks236 decks
43%synergy
Tundra
56%inclusion131 decks236 decks
40%synergy
Morphic Pool
56%inclusion131 decks236 decks
22%synergy
Underground Sea
55%inclusion129 decks236 decks
39%synergy
Scrubland
54%inclusion128 decks236 decks
38%synergy
Bloodstained Mire
53%inclusion125 decks236 decks
42%synergy
Gemstone Caverns
53%inclusion124 decks236 decks
45%synergy
Sea of Clouds
50%inclusion118 decks236 decks
15%synergy
Undercity Sewers
49%inclusion116 decks236 decks
34%synergy
Misty Rainforest
49%inclusion115 decks236 decks
38%synergy
Verdant Catacombs
48%inclusion114 decks236 decks
39%synergy
Scalding Tarn
48%inclusion113 decks236 decks
37%synergy
Vault of Champions
45%inclusion107 decks236 decks
13%synergy
Windswept Heath
44%inclusion104 decks236 decks
35%synergy
Arid Mesa
41%inclusion96 decks236 decks
31%synergy
Underground River
31%inclusion73 decks236 decks
-4%synergy
Sink into Stupor
30%inclusion70 decks236 decks
17%synergy
Meticulous Archive
28%inclusion67 decks236 decks
14%synergy
Adarkar Wastes
28%inclusion67 decks236 decks
-4%synergy
Caves of Koilos
28%inclusion65 decks236 decks
-8%synergy
Raffine's Tower
27%inclusion64 decks236 decks
-14%synergy
Shadowy Backstreet
25%inclusion59 decks236 decks
12%synergy
Arcane Sanctum
25%inclusion59 decks236 decks
-29%synergy
Glacial Fortress
19%inclusion44 decks236 decks
-25%synergy
Starting Town
17%inclusion21 decks126 decks
13%synergy
Isolated Chapel
16%inclusion37 decks236 decks
-26%synergy
Drowned Catacomb
14%inclusion34 decks236 decks
-24%synergy
Gloomlake Verge
14%inclusion34 decks236 decks
3%synergy
Floodfarm Verge
14%inclusion33 decks236 decks
3%synergy
Cavern of Souls
12%inclusion29 decks236 decks
6%synergy
Contaminated Landscape
12%inclusion28 decks236 decks
-2%synergy
Shipwreck Marsh
12%inclusion28 decks236 decks
-9%synergy
Valgavoth's Lair
12%inclusion28 decks236 decks
9%synergy
Terramorphic Expanse
11%inclusion26 decks236 decks
-5%synergy
Prairie Stream
11%inclusion26 decks236 decks
-30%synergy
Reflecting Pool
11%inclusion26 decks236 decks
3%synergy
Tainted Field
11%inclusion25 decks236 decks
4%synergy
Deserted Beach
11%inclusion25 decks236 decks
-10%synergy
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