The Master of Keys (Commander) - Combo

The Master of Keys
Rank #300
228decks
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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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Sorceries
Utility Artifacts
Enchantments
Planeswalkers
Utility Lands
Mana Artifacts
Lands
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Exhibition Tidecaller
12%inclusion3 decks26 decks
11%synergy
Does Machines
4.1%inclusion2 decks49 decks
4%synergy
Eiganjo Dynastorian
4.0%inclusion1 decks25 decks
3%synergy
Turbulent Moor
4.0%inclusion1 decks25 decks
2%synergy
Changing Loyalty
4.0%inclusion1 decks25 decks
3%synergy
High Synergy Cards
Animate Dead
91%inclusion207 decks228 decks
81%synergy
Necromancy
82%inclusion186 decks228 decks
77%synergy
Abdel Adrian, Gorion's Ward
73%inclusion166 decks228 decks
71%synergy
Dress Down
72%inclusion165 decks228 decks
70%synergy
Entomb
74%inclusion169 decks228 decks
67%synergy
Dance of the Dead
65%inclusion149 decks228 decks
63%synergy
Mystic Remora
84%inclusion191 decks228 decks
63%synergy
Sevinne's Reclamation
68%inclusion155 decks228 decks
59%synergy
Ripples of Undeath
55%inclusion125 decks228 decks
52%synergy
Dark Ritual
68%inclusion156 decks228 decks
49%synergy
Top Cards
Esper Sentinel
68%inclusion156 decks228 decks
41%synergy
Swan Song
64%inclusion146 decks228 decks
44%synergy
Swords to Plowshares
64%inclusion146 decks228 decks
-4%synergy
Blind Obedience
58%inclusion132 decks228 decks
46%synergy
Silence
58%inclusion132 decks228 decks
48%synergy
Grand Abolisher
56%inclusion128 decks228 decks
42%synergy
Demonic Consultation
55%inclusion126 decks228 decks
47%synergy
Force of Negation
54%inclusion124 decks228 decks
43%synergy
Orcish Bowmasters
54%inclusion123 decks228 decks
44%synergy
Tainted Pact
54%inclusion122 decks228 decks
47%synergy
Game Changers
Rhystic Study
75%inclusion171 decks228 decks
44%synergy
Smothering Tithe
73%inclusion166 decks228 decks
42%synergy
Enlightened Tutor
70%inclusion159 decks228 decks
51%synergy
Demonic Tutor
68%inclusion155 decks228 decks
48%synergy
Thassa's Oracle
65%inclusion149 decks228 decks
56%synergy
Vampiric Tutor
65%inclusion148 decks228 decks
48%synergy
Ancient Tomb
60%inclusion136 decks228 decks
47%synergy
Mana Vault
59%inclusion135 decks228 decks
50%synergy
Force of Will
59%inclusion135 decks228 decks
47%synergy
Chrome Mox
56%inclusion128 decks228 decks
47%synergy
Creatures
Lotho, Corrupt Shirriff
53%inclusion121 decks228 decks
36%synergy
Valley Floodcaller
49%inclusion112 decks228 decks
45%synergy
Ranger-Captain of Eos
48%inclusion110 decks228 decks
42%synergy
Displacer Kitten
39%inclusion90 decks228 decks
33%synergy
Hullbreaker Horror
38%inclusion86 decks228 decks
32%synergy
Wan Shi Tong, Librarian
33%inclusion22 decks66 decks
28%synergy
Voice of Victory
33%inclusion47 decks144 decks
24%synergy
Mockingbird
32%inclusion73 decks228 decks
28%synergy
Opposition Agent
32%inclusion72 decks228 decks
23%synergy
Archivist of Oghma
28%inclusion64 decks228 decks
22%synergy
Entity Tracker
28%inclusion64 decks228 decks
22%synergy
Inquisitive Glimmer
27%inclusion61 decks228 decks
20%synergy
Lurrus of the Dream-Den
26%inclusion60 decks228 decks
25%synergy
Ledger Shredder
24%inclusion54 decks228 decks
15%synergy
Scrabbling Skullcrab
23%inclusion53 decks228 decks
22%synergy
Mesa Enchantress
23%inclusion53 decks228 decks
14%synergy
Drannith Magistrate
23%inclusion53 decks228 decks
16%synergy
Auriok Salvagers
23%inclusion53 decks228 decks
23%synergy
Gravebreaker Lamia
21%inclusion48 decks228 decks
20%synergy
Grim Guardian
21%inclusion47 decks228 decks
18%synergy
Overlord of the Balemurk
20%inclusion46 decks228 decks
18%synergy
Demon of Fate's Design
20%inclusion45 decks228 decks
14%synergy
Hedron Crab
19%inclusion44 decks228 decks
19%synergy
Phyrexian Metamorph
18%inclusion42 decks228 decks
10%synergy
Starfield Mystic
18%inclusion41 decks228 decks
11%synergy
Talion, the Kindly Lord
18%inclusion40 decks228 decks
10%synergy
Tataru Taru
17%inclusion20 decks117 decks
9%synergy
Faerie Mastermind
17%inclusion38 decks228 decks
7%synergy
Overlord of the Floodpits
16%inclusion37 decks228 decks
13%synergy
Fear of Impostors
16%inclusion37 decks228 decks
15%synergy
Fear of Sleep Paralysis
16%inclusion36 decks228 decks
11%synergy
Doomwake Giant
14%inclusion32 decks228 decks
8%synergy
Ondu Spiritdancer
14%inclusion32 decks228 decks
8%synergy
Zur the Enchanter
14%inclusion32 decks228 decks
9%synergy
Zur, Eternal Schemer
14%inclusion31 decks228 decks
10%synergy
Psychic Frog
14%inclusion31 decks228 decks
6%synergy
Leonin Relic-Warder
13%inclusion30 decks228 decks
13%synergy
Ghostly Pilferer
13%inclusion29 decks228 decks
5%synergy
Ghostly Dancers
12%inclusion27 decks228 decks
9%synergy
Victor, Valgavoth's Seneschal
11%inclusion26 decks228 decks
9%synergy
Moon-Blessed Cleric
11%inclusion24 decks228 decks
6%synergy
Pollywog Prodigy
11%inclusion24 decks228 decks
7%synergy
Laboratory Maniac
10%inclusion22 decks228 decks
6%synergy
Heliod, the Radiant Dawn
10%inclusion22 decks228 decks
6%synergy
Enduring Curiosity
9.2%inclusion21 decks228 decks
1%synergy
Snapcaster Mage
8.3%inclusion19 decks228 decks
6%synergy
Hoarding Broodlord
7.9%inclusion18 decks228 decks
6%synergy
Gremlin Tamer
7.9%inclusion18 decks228 decks
7%synergy
Balemurk Leech
7.9%inclusion18 decks228 decks
7%synergy
Sage of Mysteries
7.5%inclusion17 decks228 decks
7%synergy
Instants
Flusterstorm
53%inclusion120 decks228 decks
45%synergy
An Offer You Can't Refuse
48%inclusion109 decks228 decks
20%synergy
Mystical Tutor
47%inclusion108 decks228 decks
37%synergy
Pact of Negation
47%inclusion107 decks228 decks
39%synergy
Mental Misstep
46%inclusion106 decks228 decks
40%synergy
Mindbreak Trap
46%inclusion105 decks228 decks
39%synergy
Fierce Guardianship
46%inclusion105 decks228 decks
26%synergy
Intuition
46%inclusion104 decks228 decks
44%synergy
Borne Upon a Wind
46%inclusion104 decks228 decks
41%synergy
Cyclonic Rift
42%inclusion96 decks228 decks
19%synergy
Cabal Ritual
41%inclusion94 decks228 decks
38%synergy
Sink into Stupor
30%inclusion69 decks228 decks
17%synergy
Gifts Ungiven
26%inclusion60 decks228 decks
24%synergy
Mana Drain
26%inclusion60 decks228 decks
9%synergy
Into the Flood Maw
26%inclusion60 decks228 decks
23%synergy
Chain of Vapor
26%inclusion59 decks228 decks
23%synergy
Counterspell
21%inclusion49 decks228 decks
-20%synergy
Path to Exile
20%inclusion46 decks228 decks
-22%synergy
Dovin's Veto
17%inclusion38 decks228 decks
-9%synergy
Retraction Helix
14%inclusion33 decks228 decks
14%synergy
Brain Freeze
14%inclusion32 decks228 decks
13%synergy
Culling the Weak
12%inclusion28 decks228 decks
11%synergy
Arcane Denial
12%inclusion27 decks228 decks
-8%synergy
Ad Nauseam
11%inclusion25 decks228 decks
9%synergy
Frantic Search
11%inclusion24 decks228 decks
-8%synergy
Brainstorm
9.2%inclusion21 decks228 decks
-8%synergy
Darkblast
9.2%inclusion21 decks228 decks
9%synergy
Deadly Rollick
8.8%inclusion20 decks228 decks
-6%synergy
Dispel
8.8%inclusion20 decks228 decks
5%synergy
Banishing Knack
8.3%inclusion19 decks228 decks
8%synergy
Muddle the Mixture
7.9%inclusion18 decks228 decks
4%synergy
Void Rend
7.9%inclusion18 decks228 decks
-27%synergy
Strix Serenade
7.5%inclusion17 decks228 decks
4%synergy
Saw in Half
7.5%inclusion17 decks228 decks
5%synergy
Fell the Profane
7.0%inclusion16 decks228 decks
-2%synergy
Sacrifice
7.0%inclusion16 decks228 decks
6%synergy
Orim's Chant
6.6%inclusion15 decks228 decks
5%synergy
Thirst for Meaning
6.6%inclusion15 decks228 decks
5%synergy
Teferi's Protection
6.1%inclusion14 decks228 decks
-10%synergy
Lim-Dûl's Vault
6.1%inclusion14 decks228 decks
3%synergy
Negate
5.7%inclusion13 decks228 decks
-11%synergy
Angel's Grace
5.3%inclusion12 decks228 decks
3%synergy
Sorceries
Imperial Seal
45%inclusion103 decks228 decks
38%synergy
Reanimate
36%inclusion81 decks228 decks
19%synergy
Toxic Deluge
32%inclusion73 decks228 decks
12%synergy
Windfall
26%inclusion59 decks228 decks
13%synergy
Lively Dirge
22%inclusion51 decks228 decks
21%synergy
Beseech the Mirror
18%inclusion41 decks228 decks
14%synergy
Demonic Counsel
16%inclusion36 decks228 decks
15%synergy
Unmarked Grave
13%inclusion29 decks228 decks
11%synergy
Mnemonic Betrayal
12%inclusion28 decks228 decks
9%synergy
Diabolic Intent
10%inclusion22 decks228 decks
5%synergy
Singularity Rupture
9.1%inclusion9 decks99 decks
7%synergy
Redress Fate
8.8%inclusion20 decks228 decks
3%synergy
Buried Alive
8.3%inclusion19 decks228 decks
4%synergy
Yawgmoth's Will
7.9%inclusion18 decks228 decks
7%synergy
Idyllic Tutor
7.9%inclusion18 decks228 decks
4%synergy
Cabal Therapy
7.5%inclusion17 decks228 decks
7%synergy
Damn
7.0%inclusion16 decks228 decks
-13%synergy
Glimpse the Unthinkable
6.6%inclusion15 decks228 decks
6%synergy
Supreme Verdict
6.1%inclusion14 decks228 decks
-9%synergy
Praetor's Grasp
6.1%inclusion14 decks228 decks
3%synergy
Dance of the Manse
6.1%inclusion14 decks228 decks
3%synergy
Grim Tutor
6.1%inclusion14 decks228 decks
2%synergy
Extinguish All Hope
5.3%inclusion12 decks228 decks
4%synergy
Space-Time Anomaly
5.2%inclusion5 decks97 decks
4%synergy
Utility Artifacts
The One Ring
47%inclusion108 decks228 decks
35%synergy
Wishclaw Talisman
42%inclusion96 decks228 decks
34%synergy
Mesmeric Orb
11%inclusion24 decks228 decks
9%synergy
Cursed Totem
6.6%inclusion15 decks228 decks
4%synergy
Sensei's Divining Top
6.1%inclusion14 decks228 decks
-3%synergy
Enchantments
Necropotence
48%inclusion110 decks228 decks
42%synergy
Tinybones Joins Up
46%inclusion104 decks228 decks
44%synergy
Amphibian Downpour
43%inclusion98 decks228 decks
38%synergy
Mirrormade
39%inclusion89 decks228 decks
29%synergy
Touch the Spirit Realm
39%inclusion88 decks228 decks
36%synergy
The Meathook Massacre
29%inclusion66 decks228 decks
26%synergy
Static Prison
27%inclusion61 decks228 decks
26%synergy
Copy Artifact
21%inclusion47 decks228 decks
20%synergy
Seal of Cleansing
20%inclusion46 decks228 decks
19%synergy
Propaganda
20%inclusion46 decks228 decks
-8%synergy
Sphere of Safety
19%inclusion44 decks228 decks
10%synergy
Grasp of Fate
19%inclusion43 decks228 decks
13%synergy
Secret Arcade // Dusty Parlor
16%inclusion36 decks228 decks
11%synergy
Chthonian Nightmare
15%inclusion35 decks228 decks
15%synergy
Stillness in Motion
15%inclusion21 decks139 decks
15%synergy
Ghostly Prison
15%inclusion34 decks228 decks
-7%synergy
Copy Enchantment
14%inclusion33 decks228 decks
10%synergy
Trouble in Pairs
14%inclusion33 decks228 decks
9%synergy
Founding the Third Path
14%inclusion32 decks228 decks
14%synergy
Monologue Tax
14%inclusion31 decks228 decks
7%synergy
Estrid's Invocation
13%inclusion30 decks228 decks
9%synergy
Seal of Removal
13%inclusion30 decks228 decks
13%synergy
Counterbalance
12%inclusion28 decks228 decks
11%synergy
Cemetery Tampering
12%inclusion28 decks228 decks
12%synergy
Steal Enchantment
12%inclusion27 decks228 decks
11%synergy
Leyline of Anticipation
12%inclusion27 decks228 decks
7%synergy
Teval's Judgment
11%inclusion16 decks143 decks
10%synergy
Out of the Tombs
11%inclusion25 decks228 decks
11%synergy
Starfield of Nyx
11%inclusion24 decks228 decks
7%synergy
Sigil of the Empty Throne
9.2%inclusion21 decks228 decks
3%synergy
The Tale of Tamiyo
8.8%inclusion20 decks228 decks
8%synergy
Enchanted Evening
8.8%inclusion20 decks228 decks
7%synergy
Darksteel Mutation
7.9%inclusion18 decks228 decks
2%synergy
Greater Auramancy
7.9%inclusion18 decks228 decks
4%synergy
Aura of Silence
7.9%inclusion18 decks228 decks
5%synergy
Chains of Mephistopheles
7.9%inclusion18 decks228 decks
8%synergy
Black Market Connections
7.9%inclusion18 decks228 decks
-7%synergy
Phyrexian Arena
7.9%inclusion18 decks228 decks
-6%synergy
Noggle the Mind
7.8%inclusion4 decks51 decks
7%synergy
Imprisoned in the Moon
7.5%inclusion17 decks228 decks
1%synergy
Court of Cunning
7.5%inclusion17 decks228 decks
6%synergy
Sheltered by Ghosts
7.0%inclusion16 decks228 decks
4%synergy
Cacophony Unleashed
6.6%inclusion15 decks228 decks
5%synergy
Dance of Many
6.6%inclusion15 decks228 decks
6%synergy
Nowhere to Run
6.6%inclusion15 decks228 decks
5%synergy
All That Glitters
6.1%inclusion14 decks228 decks
-2%synergy
Authority of the Consuls
5.7%inclusion13 decks228 decks
-7%synergy
Out of Time
5.7%inclusion13 decks228 decks
5%synergy
Timely Ward
5.7%inclusion13 decks228 decks
1%synergy
Defiled Crypt // Cadaver Lab
5.3%inclusion12 decks227 decks
5%synergy
Planeswalkers
Teferi, Time Raveler
36%inclusion83 decks228 decks
28%synergy
Utility Lands
Otawara, Soaring City
63%inclusion144 decks228 decks
44%synergy
Hall of Heliod's Generosity
32%inclusion72 decks228 decks
19%synergy
Urza's Saga
32%inclusion72 decks228 decks
20%synergy
Emergence Zone
21%inclusion48 decks228 decks
19%synergy
Cephalid Coliseum
20%inclusion46 decks228 decks
17%synergy
Takenuma, Abandoned Mire
16%inclusion37 decks228 decks
10%synergy
Bojuka Bog
16%inclusion36 decks228 decks
-11%synergy
Minamo, School at Water's Edge
14%inclusion33 decks228 decks
11%synergy
Urborg, Tomb of Yawgmoth
10%inclusion23 decks228 decks
-3%synergy
Serra's Sanctum
10%inclusion22 decks228 decks
8%synergy
City of Traitors
7.9%inclusion18 decks228 decks
7%synergy
Phyrexian Tower
6.1%inclusion14 decks228 decks
3%synergy
Reliquary Tower
5.3%inclusion12 decks228 decks
-29%synergy
Mana Artifacts
Sol Ring
96%inclusion220 decks228 decks
7%synergy
Arcane Signet
93%inclusion213 decks228 decks
6%synergy
Talisman of Dominance
72%inclusion165 decks228 decks
23%synergy
Fellwar Stone
59%inclusion134 decks228 decks
26%synergy
Lotus Petal
58%inclusion133 decks228 decks
48%synergy
Talisman of Progress
56%inclusion127 decks228 decks
12%synergy
Mox Diamond
48%inclusion109 decks228 decks
41%synergy
Mox Opal
45%inclusion103 decks228 decks
37%synergy
Talisman of Hierarchy
42%inclusion96 decks228 decks
-2%synergy
Lion's Eye Diamond
39%inclusion88 decks228 decks
37%synergy
Mox Amber
25%inclusion58 decks228 decks
19%synergy
Grim Monolith
21%inclusion49 decks228 decks
18%synergy
Orzhov Signet
16%inclusion36 decks228 decks
-17%synergy
Azorius Signet
15%inclusion34 decks228 decks
-15%synergy
Dimir Signet
14%inclusion33 decks228 decks
-16%synergy
Mind Stone
6.1%inclusion14 decks228 decks
-6%synergy
Lands
Command Tower
96%inclusion220 decks228 decks
4%synergy
Watery Grave
82%inclusion187 decks228 decks
31%synergy
Hallowed Fountain
82%inclusion186 decks228 decks
31%synergy
Flooded Strand
81%inclusion185 decks228 decks
43%synergy
Godless Shrine
81%inclusion184 decks228 decks
29%synergy
Polluted Delta
80%inclusion182 decks228 decks
42%synergy
Marsh Flats
75%inclusion171 decks228 decks
39%synergy
Island
68%inclusion154 decks228 decks
-25%synergy
Swamp
65%inclusion149 decks228 decks
-26%synergy
Exotic Orchard
63%inclusion144 decks228 decks
4%synergy
City of Brass
59%inclusion134 decks228 decks
44%synergy
Plains
58%inclusion132 decks228 decks
-34%synergy
Mana Confluence
56%inclusion128 decks228 decks
42%synergy
Tundra
55%inclusion126 decks228 decks
39%synergy
Underground Sea
55%inclusion125 decks228 decks
39%synergy
Morphic Pool
54%inclusion124 decks228 decks
21%synergy
Scrubland
54%inclusion124 decks228 decks
38%synergy
Bloodstained Mire
53%inclusion120 decks228 decks
42%synergy
Gemstone Caverns
52%inclusion119 decks228 decks
45%synergy
Undercity Sewers
49%inclusion111 decks228 decks
34%synergy
Misty Rainforest
49%inclusion111 decks228 decks
38%synergy
Sea of Clouds
49%inclusion111 decks228 decks
14%synergy
Verdant Catacombs
48%inclusion109 decks228 decks
38%synergy
Scalding Tarn
48%inclusion109 decks228 decks
37%synergy
Windswept Heath
44%inclusion101 decks228 decks
35%synergy
Vault of Champions
44%inclusion101 decks228 decks
12%synergy
Arid Mesa
39%inclusion88 decks228 decks
29%synergy
Underground River
32%inclusion73 decks228 decks
-2%synergy
Sink into Stupor
30%inclusion69 decks228 decks
17%synergy
Adarkar Wastes
29%inclusion67 decks228 decks
-3%synergy
Caves of Koilos
29%inclusion65 decks228 decks
-7%synergy
Meticulous Archive
28%inclusion63 decks228 decks
14%synergy
Raffine's Tower
27%inclusion62 decks228 decks
-14%synergy
Arcane Sanctum
25%inclusion58 decks228 decks
-29%synergy
Shadowy Backstreet
24%inclusion54 decks228 decks
11%synergy
Glacial Fortress
20%inclusion45 decks228 decks
-23%synergy
Isolated Chapel
17%inclusion38 decks228 decks
-24%synergy
Starting Town
16%inclusion19 decks117 decks
12%synergy
Gloomlake Verge
15%inclusion35 decks228 decks
4%synergy
Drowned Catacomb
15%inclusion34 decks228 decks
-23%synergy
Floodfarm Verge
15%inclusion34 decks228 decks
4%synergy
Valgavoth's Lair
12%inclusion28 decks228 decks
10%synergy
Shipwreck Marsh
12%inclusion28 decks228 decks
-8%synergy
Contaminated Landscape
12%inclusion27 decks228 decks
-2%synergy
Reflecting Pool
12%inclusion27 decks228 decks
4%synergy
Terramorphic Expanse
11%inclusion26 decks228 decks
-4%synergy
Prairie Stream
11%inclusion26 decks228 decks
-29%synergy
Cavern of Souls
11%inclusion25 decks228 decks
4%synergy
Deserted Beach
11%inclusion25 decks228 decks
-10%synergy
Tainted Field
11%inclusion24 decks228 decks
4%synergy
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