The Master of Keys (Commander) - Control

The Master of Keys
Rank #302
201decks
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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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Enchantments
Battles
Planeswalkers
Utility Lands
Mana Artifacts
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Exhibition Tidecaller
7.5%inclusion3 decks40 decks
7%synergy
Eiganjo Dynastorian
2.7%inclusion1 decks37 decks
1%synergy
Primary Research
2.7%inclusion1 decks37 decks
3%synergy
Changing Loyalty
2.7%inclusion1 decks37 decks
2%synergy
Silverquill, the Disputant
2.5%inclusion1 decks40 decks
2%synergy
High Synergy Cards
Ripples of Undeath
68%inclusion137 decks201 decks
65%synergy
Dress Down
66%inclusion133 decks201 decks
64%synergy
Animate Dead
73%inclusion147 decks201 decks
64%synergy
Necromancy
63%inclusion126 decks201 decks
58%synergy
Mystic Remora
70%inclusion141 decks201 decks
50%synergy
Inquisitive Glimmer
57%inclusion114 decks201 decks
50%synergy
Entity Tracker
55%inclusion110 decks201 decks
49%synergy
Amphibian Downpour
53%inclusion107 decks201 decks
49%synergy
Dance of the Dead
46%inclusion92 decks201 decks
44%synergy
Entomb
48%inclusion97 decks201 decks
42%synergy
Top Cards
Swords to Plowshares
59%inclusion119 decks201 decks
-9%synergy
Sevinne's Reclamation
50%inclusion101 decks201 decks
41%synergy
Blind Obedience
50%inclusion100 decks201 decks
38%synergy
Mesa Enchantress
47%inclusion94 decks201 decks
38%synergy
An Offer You Can't Refuse
44%inclusion89 decks201 decks
17%synergy
Starfield Mystic
44%inclusion88 decks201 decks
37%synergy
Swan Song
42%inclusion85 decks201 decks
22%synergy
Seal of Cleansing
42%inclusion84 decks201 decks
40%synergy
Scrabbling Skullcrab
41%inclusion83 decks201 decks
40%synergy
Gravebreaker Lamia
41%inclusion83 decks201 decks
40%synergy
Game Changers
Smothering Tithe
57%inclusion115 decks201 decks
27%synergy
Rhystic Study
53%inclusion106 decks201 decks
22%synergy
Enlightened Tutor
41%inclusion83 decks201 decks
23%synergy
Demonic Tutor
37%inclusion75 decks201 decks
17%synergy
Ancient Tomb
32%inclusion65 decks201 decks
20%synergy
Thassa's Oracle
31%inclusion63 decks201 decks
22%synergy
Force of Will
31%inclusion63 decks201 decks
19%synergy
Vampiric Tutor
31%inclusion63 decks201 decks
15%synergy
Fierce Guardianship
31%inclusion62 decks201 decks
11%synergy
Mana Vault
29%inclusion58 decks201 decks
20%synergy
Creatures
Demon of Fate's Design
41%inclusion83 decks201 decks
36%synergy
Abdel Adrian, Gorion's Ward
40%inclusion80 decks201 decks
38%synergy
Esper Sentinel
38%inclusion76 decks201 decks
11%synergy
Overlord of the Balemurk
37%inclusion74 decks201 decks
35%synergy
Doomwake Giant
37%inclusion74 decks201 decks
31%synergy
Fear of Impostors
36%inclusion72 decks201 decks
34%synergy
Overlord of the Floodpits
34%inclusion69 decks201 decks
31%synergy
Fear of Sleep Paralysis
34%inclusion69 decks201 decks
29%synergy
Lotho, Corrupt Shirriff
33%inclusion66 decks201 decks
16%synergy
Zur, Eternal Schemer
31%inclusion63 decks201 decks
28%synergy
Victor, Valgavoth's Seneschal
28%inclusion56 decks201 decks
26%synergy
Valley Floodcaller
27%inclusion55 decks201 decks
24%synergy
Grand Abolisher
27%inclusion55 decks201 decks
13%synergy
Ondu Spiritdancer
27%inclusion55 decks201 decks
21%synergy
Orcish Bowmasters
26%inclusion53 decks201 decks
16%synergy
Hullbreaker Horror
24%inclusion49 decks201 decks
18%synergy
Heliod, the Radiant Dawn
23%inclusion47 decks201 decks
20%synergy
Zur the Enchanter
23%inclusion46 decks201 decks
18%synergy
Ledger Shredder
21%inclusion42 decks201 decks
12%synergy
Displacer Kitten
19%inclusion39 decks201 decks
13%synergy
Grim Guardian
19%inclusion39 decks201 decks
17%synergy
Ranger-Captain of Eos
19%inclusion39 decks201 decks
13%synergy
Sage of Mysteries
18%inclusion36 decks201 decks
18%synergy
Opposition Agent
16%inclusion33 decks201 decks
8%synergy
Archon of Sun's Grace
16%inclusion33 decks201 decks
12%synergy
Silent Hallcreeper
16%inclusion32 decks201 decks
11%synergy
Ghostly Dancers
16%inclusion32 decks201 decks
14%synergy
Enduring Curiosity
15%inclusion31 decks201 decks
7%synergy
Lurrus of the Dream-Den
13%inclusion27 decks201 decks
12%synergy
Drannith Magistrate
13%inclusion27 decks201 decks
6%synergy
Moon-Blessed Cleric
13%inclusion26 decks201 decks
8%synergy
Mockingbird
13%inclusion26 decks201 decks
9%synergy
Aminatou, Veil Piercer
12%inclusion25 decks201 decks
11%synergy
Hedron Crab
12%inclusion24 decks201 decks
11%synergy
Talion, the Kindly Lord
10%inclusion21 decks201 decks
3%synergy
Archivist of Oghma
10%inclusion20 decks201 decks
4%synergy
Mindwrack Harpy
10%inclusion20 decks201 decks
10%synergy
Witch Enchanter
9.5%inclusion19 decks201 decks
2%synergy
Alseid of Life's Bounty
9.5%inclusion19 decks201 decks
8%synergy
Auriok Salvagers
9.5%inclusion19 decks201 decks
9%synergy
Wan Shi Tong, Librarian
9.4%inclusion9 decks96 decks
4%synergy
Overlord of the Mistmoors
9.0%inclusion18 decks201 decks
7%synergy
Leonin Relic-Warder
9.0%inclusion18 decks201 decks
9%synergy
Faerie Mastermind
9.0%inclusion18 decks201 decks
-1%synergy
Psychic Frog
9.0%inclusion18 decks201 decks
2%synergy
Summon: Yojimbo
8.5%inclusion11 decks129 decks
7%synergy
Phyrexian Metamorph
8.5%inclusion17 decks201 decks
0%synergy
Balemurk Leech
8.5%inclusion17 decks201 decks
8%synergy
Voice of Victory
8.3%inclusion12 decks145 decks
-0%synergy
Soaring Lightbringer
8.0%inclusion16 decks201 decks
4%synergy
Instants
Dark Ritual
40%inclusion81 decks201 decks
20%synergy
Silence
29%inclusion59 decks201 decks
19%synergy
Counterspell
29%inclusion59 decks201 decks
-13%synergy
Cyclonic Rift
28%inclusion56 decks201 decks
5%synergy
Force of Negation
27%inclusion55 decks201 decks
16%synergy
Flusterstorm
25%inclusion51 decks201 decks
18%synergy
Demonic Consultation
24%inclusion49 decks201 decks
17%synergy
Sink into Stupor
24%inclusion49 decks201 decks
11%synergy
Mystical Tutor
24%inclusion49 decks201 decks
14%synergy
Tainted Pact
24%inclusion48 decks201 decks
17%synergy
Dovin's Veto
24%inclusion48 decks201 decks
-2%synergy
Intuition
23%inclusion47 decks201 decks
22%synergy
Borne Upon a Wind
23%inclusion47 decks201 decks
19%synergy
Mindbreak Trap
23%inclusion46 decks201 decks
16%synergy
Mana Drain
23%inclusion46 decks201 decks
6%synergy
Path to Exile
22%inclusion45 decks201 decks
-20%synergy
Arcane Denial
22%inclusion44 decks201 decks
2%synergy
Mental Misstep
21%inclusion43 decks201 decks
15%synergy
Pact of Negation
19%inclusion39 decks201 decks
12%synergy
Cabal Ritual
18%inclusion36 decks201 decks
15%synergy
Gifts Ungiven
14%inclusion29 decks201 decks
12%synergy
Void Rend
14%inclusion29 decks201 decks
-20%synergy
Frantic Search
14%inclusion28 decks201 decks
-5%synergy
Into the Flood Maw
12%inclusion25 decks201 decks
9%synergy
Fell the Profane
12%inclusion24 decks201 decks
3%synergy
Negate
12%inclusion24 decks201 decks
-4%synergy
Thirst for Meaning
12%inclusion24 decks201 decks
10%synergy
Chain of Vapor
11%inclusion23 decks201 decks
9%synergy
Inkshield
10%inclusion20 decks201 decks
0%synergy
Retraction Helix
8.5%inclusion17 decks201 decks
8%synergy
Muddle the Mixture
7.5%inclusion15 decks201 decks
4%synergy
Teferi's Protection
7.5%inclusion15 decks201 decks
-9%synergy
Brainstorm
7.5%inclusion15 decks201 decks
-9%synergy
Brain Freeze
7.5%inclusion15 decks201 decks
7%synergy
Darkblast
7.0%inclusion14 decks201 decks
7%synergy
Deadly Rollick
6.0%inclusion12 decks201 decks
-10%synergy
Anguished Unmaking
6.0%inclusion12 decks201 decks
-20%synergy
Dispel
5.5%inclusion11 decks201 decks
2%synergy
Strix Serenade
5.5%inclusion11 decks201 decks
2%synergy
Faithful Mending
5.5%inclusion11 decks201 decks
2%synergy
Otherworldly Gaze
5.5%inclusion11 decks201 decks
3%synergy
Sorceries
Windfall
27%inclusion54 decks201 decks
14%synergy
Toxic Deluge
26%inclusion52 decks201 decks
6%synergy
Reanimate
20%inclusion41 decks201 decks
4%synergy
Imperial Seal
19%inclusion38 decks201 decks
12%synergy
Dance of the Manse
18%inclusion36 decks201 decks
15%synergy
Extinguish All Hope
17%inclusion34 decks201 decks
15%synergy
Redress Fate
16%inclusion32 decks201 decks
11%synergy
Singularity Rupture
15%inclusion18 decks118 decks
13%synergy
Space-Time Anomaly
11%inclusion13 decks118 decks
9%synergy
Lively Dirge
11%inclusion22 decks201 decks
10%synergy
Resurgent Belief
11%inclusion22 decks201 decks
9%synergy
Idyllic Tutor
11%inclusion22 decks201 decks
7%synergy
Supreme Verdict
10%inclusion21 decks201 decks
-4%synergy
Glimpse the Unthinkable
10%inclusion21 decks201 decks
10%synergy
Beseech the Mirror
10%inclusion20 decks201 decks
6%synergy
Demonic Counsel
9.5%inclusion19 decks201 decks
8%synergy
Damn
9.5%inclusion19 decks201 decks
-11%synergy
Time Wipe
9.0%inclusion18 decks201 decks
3%synergy
Buried Alive
8.0%inclusion16 decks201 decks
4%synergy
Unmarked Grave
7.5%inclusion15 decks201 decks
6%synergy
Yawgmoth's Will
7.0%inclusion14 decks201 decks
6%synergy
Replenish
7.0%inclusion14 decks201 decks
5%synergy
Mnemonic Betrayal
7.0%inclusion14 decks201 decks
4%synergy
Farewell
5.5%inclusion11 decks201 decks
-7%synergy
Traumatize
5.5%inclusion11 decks201 decks
5%synergy
Utility Artifacts
Mesmeric Orb
24%inclusion49 decks201 decks
23%synergy
The One Ring
22%inclusion45 decks201 decks
10%synergy
Wishclaw Talisman
20%inclusion40 decks201 decks
12%synergy
Lightning Greaves
10%inclusion21 decks201 decks
-12%synergy
Cloud Key
6.0%inclusion12 decks201 decks
3%synergy
Enchantments
Mirrormade
40%inclusion80 decks201 decks
30%synergy
Propaganda
37%inclusion74 decks201 decks
8%synergy
Grasp of Fate
36%inclusion72 decks201 decks
30%synergy
Sphere of Safety
36%inclusion72 decks201 decks
26%synergy
Touch the Spirit Realm
32%inclusion64 decks201 decks
30%synergy
Ghostly Prison
32%inclusion64 decks201 decks
9%synergy
Starfield of Nyx
31%inclusion62 decks201 decks
27%synergy
Cemetery Tampering
29%inclusion59 decks201 decks
29%synergy
Seal of Removal
29%inclusion58 decks201 decks
28%synergy
Secret Arcade // Dusty Parlor
28%inclusion56 decks201 decks
23%synergy
The Meathook Massacre
25%inclusion50 decks201 decks
22%synergy
Estrid's Invocation
25%inclusion50 decks201 decks
20%synergy
Sigil of the Empty Throne
24%inclusion49 decks201 decks
19%synergy
Tinybones Joins Up
24%inclusion48 decks201 decks
23%synergy
Necropotence
23%inclusion47 decks201 decks
17%synergy
Static Prison
23%inclusion47 decks201 decks
23%synergy
Stillness in Motion
22%inclusion32 decks144 decks
22%synergy
Cacophony Unleashed
22%inclusion44 decks201 decks
20%synergy
Copy Enchantment
22%inclusion44 decks201 decks
17%synergy
Darksteel Mutation
20%inclusion40 decks201 decks
14%synergy
The Tale of Tamiyo
19%inclusion38 decks201 decks
18%synergy
Sheltered by Ghosts
19%inclusion38 decks201 decks
16%synergy
Imprisoned in the Moon
18%inclusion37 decks201 decks
12%synergy
Greater Auramancy
17%inclusion35 decks201 decks
13%synergy
Out of the Tombs
16%inclusion33 decks201 decks
16%synergy
Monologue Tax
16%inclusion33 decks201 decks
10%synergy
Ethereal Armor
15%inclusion30 decks201 decks
10%synergy
Aura of Silence
15%inclusion30 decks201 decks
12%synergy
Authority of the Consuls
14%inclusion29 decks201 decks
1%synergy
All That Glitters
14%inclusion29 decks201 decks
6%synergy
Solitary Confinement
14%inclusion29 decks201 decks
12%synergy
Phyrexian Arena
14%inclusion29 decks201 decks
0%synergy
Court of Cunning
13%inclusion27 decks201 decks
12%synergy
Leyline of Anticipation
13%inclusion27 decks201 decks
9%synergy
Black Market Connections
13%inclusion27 decks201 decks
-1%synergy
Nowhere to Run
13%inclusion27 decks201 decks
12%synergy
Trouble in Pairs
13%inclusion27 decks201 decks
8%synergy
Defiled Crypt // Cadaver Lab
13%inclusion27 decks201 decks
13%synergy
Teval's Judgment
13%inclusion19 decks145 decks
12%synergy
Timely Ward
12%inclusion25 decks201 decks
8%synergy
Oubliette
12%inclusion24 decks201 decks
10%synergy
Extravagant Replication
11%inclusion23 decks201 decks
6%synergy
Hallowed Haunting
11%inclusion23 decks201 decks
9%synergy
Land Tax
11%inclusion22 decks201 decks
5%synergy
Founding the Third Path
10%inclusion21 decks201 decks
10%synergy
Unable to Scream
10%inclusion21 decks201 decks
9%synergy
Secrets of the Dead
10%inclusion21 decks201 decks
10%synergy
Shark Typhoon
9.5%inclusion19 decks201 decks
4%synergy
Chronic Flooding
9.0%inclusion18 decks201 decks
9%synergy
Polluted Cistern // Dim Oubliette
9.0%inclusion18 decks201 decks
8%synergy
Battles
Invasion of Theros
6.0%inclusion12 decks201 decks
4%synergy
Planeswalkers
Teferi, Time Raveler
17%inclusion34 decks201 decks
9%synergy
Utility Lands
Hall of Heliod's Generosity
47%inclusion95 decks201 decks
34%synergy
Otawara, Soaring City
37%inclusion75 decks201 decks
18%synergy
Bojuka Bog
26%inclusion52 decks201 decks
-1%synergy
Urza's Saga
19%inclusion39 decks201 decks
8%synergy
Cephalid Coliseum
16%inclusion32 decks201 decks
12%synergy
Takenuma, Abandoned Mire
14%inclusion29 decks201 decks
8%synergy
Emergence Zone
13%inclusion26 decks201 decks
11%synergy
Serra's Sanctum
10%inclusion21 decks201 decks
9%synergy
Urborg, Tomb of Yawgmoth
8.0%inclusion16 decks201 decks
-5%synergy
Reliquary Tower
7.5%inclusion15 decks201 decks
-27%synergy
Eiganjo, Seat of the Empire
6.5%inclusion13 decks201 decks
1%synergy
City of Traitors
5.5%inclusion11 decks201 decks
4%synergy
Ishgard, the Holy See
5.4%inclusion7 decks130 decks
2%synergy
Mana Artifacts
Sol Ring
89%inclusion178 decks201 decks
-1%synergy
Arcane Signet
88%inclusion176 decks201 decks
-0%synergy
Talisman of Dominance
65%inclusion131 decks201 decks
15%synergy
Talisman of Progress
61%inclusion122 decks201 decks
16%synergy
Talisman of Hierarchy
52%inclusion104 decks201 decks
7%synergy
Fellwar Stone
45%inclusion90 decks201 decks
12%synergy
Lotus Petal
29%inclusion58 decks201 decks
19%synergy
Chrome Mox
28%inclusion56 decks201 decks
19%synergy
Azorius Signet
23%inclusion46 decks201 decks
-7%synergy
Mox Opal
22%inclusion45 decks201 decks
14%synergy
Mox Diamond
22%inclusion45 decks201 decks
16%synergy
Dimir Signet
19%inclusion38 decks201 decks
-11%synergy
Orzhov Signet
19%inclusion38 decks201 decks
-13%synergy
Lion's Eye Diamond
16%inclusion32 decks201 decks
14%synergy
Mox Amber
10%inclusion20 decks201 decks
4%synergy
Grim Monolith
9.0%inclusion18 decks201 decks
6%synergy
Mind Stone
9.0%inclusion18 decks201 decks
-3%synergy
Lands
Command Tower
97%inclusion195 decks201 decks
4%synergy
Island
86%inclusion173 decks201 decks
-7%synergy
Swamp
82%inclusion165 decks201 decks
-10%synergy
Plains
79%inclusion159 decks201 decks
-13%synergy
Watery Grave
72%inclusion145 decks201 decks
21%synergy
Hallowed Fountain
72%inclusion144 decks201 decks
21%synergy
Godless Shrine
70%inclusion141 decks201 decks
18%synergy
Flooded Strand
63%inclusion126 decks201 decks
24%synergy
Exotic Orchard
62%inclusion124 decks201 decks
3%synergy
Polluted Delta
62%inclusion124 decks201 decks
24%synergy
Marsh Flats
60%inclusion120 decks201 decks
24%synergy
Caves of Koilos
48%inclusion96 decks201 decks
12%synergy
Adarkar Wastes
47%inclusion94 decks201 decks
14%synergy
Sea of Clouds
46%inclusion93 decks201 decks
11%synergy
Morphic Pool
44%inclusion89 decks201 decks
11%synergy
Underground River
44%inclusion88 decks201 decks
9%synergy
Undercity Sewers
41%inclusion83 decks201 decks
27%synergy
Vault of Champions
40%inclusion80 decks201 decks
8%synergy
City of Brass
36%inclusion73 decks201 decks
21%synergy
Raffine's Tower
36%inclusion72 decks201 decks
-5%synergy
Arcane Sanctum
36%inclusion72 decks201 decks
-18%synergy
Meticulous Archive
33%inclusion67 decks201 decks
19%synergy
Bloodstained Mire
33%inclusion67 decks201 decks
23%synergy
Tundra
33%inclusion66 decks201 decks
17%synergy
Underground Sea
32%inclusion65 decks201 decks
17%synergy
Verdant Catacombs
32%inclusion65 decks201 decks
23%synergy
Scrubland
32%inclusion65 decks201 decks
16%synergy
Glacial Fortress
32%inclusion64 decks201 decks
-11%synergy
Misty Rainforest
32%inclusion64 decks201 decks
21%synergy
Mana Confluence
31%inclusion63 decks201 decks
18%synergy
Windswept Heath
31%inclusion62 decks201 decks
22%synergy
Shadowy Backstreet
30%inclusion60 decks201 decks
17%synergy
Isolated Chapel
30%inclusion60 decks201 decks
-12%synergy
Scalding Tarn
29%inclusion59 decks201 decks
19%synergy
Drowned Catacomb
27%inclusion54 decks201 decks
-11%synergy
Gemstone Caverns
25%inclusion51 decks201 decks
18%synergy
Arid Mesa
25%inclusion51 decks201 decks
16%synergy
Sink into Stupor
24%inclusion49 decks201 decks
11%synergy
Valgavoth's Lair
23%inclusion47 decks201 decks
21%synergy
Floodfarm Verge
22%inclusion45 decks201 decks
11%synergy
Gloomlake Verge
22%inclusion44 decks201 decks
11%synergy
Prairie Stream
21%inclusion43 decks201 decks
-19%synergy
Deserted Beach
21%inclusion43 decks201 decks
1%synergy
Contaminated Landscape
20%inclusion40 decks201 decks
6%synergy
Sunken Hollow
20%inclusion40 decks201 decks
-20%synergy
Evolving Wilds
18%inclusion37 decks201 decks
-6%synergy
Terramorphic Expanse
18%inclusion36 decks201 decks
2%synergy
Shipwreck Marsh
18%inclusion36 decks201 decks
-3%synergy
Obscura Storefront
15%inclusion30 decks201 decks
6%synergy
Shattered Sanctum
14%inclusion28 decks201 decks
-3%synergy
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