The Master of Keys (Commander) - Control

The Master of Keys
Rank #295
215decks
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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 Artifacts
Enchantments
Battles
Planeswalkers
Utility Lands
Mana Artifacts
Lands
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Gleaming Splendor
19%inclusion5 decks27 decks
10%synergy
Uncover the Moon-Letters
15%inclusion4 decks27 decks
14%synergy
The Queen of Dale
11%inclusion4 decks35 decks
7%synergy
Confusticate and Bebother
3.7%inclusion1 decks27 decks
3%synergy
Celebrate the Mountain-king
3.7%inclusion1 decks27 decks
3%synergy
High Synergy Cards
Ripples of Undeath
69%inclusion148 decks215 decks
66%synergy
Dress Down
67%inclusion144 decks215 decks
65%synergy
Animate Dead
74%inclusion159 decks215 decks
64%synergy
Necromancy
63%inclusion135 decks215 decks
58%synergy
Entity Tracker
57%inclusion123 decks215 decks
51%synergy
Inquisitive Glimmer
58%inclusion124 decks215 decks
51%synergy
Mystic Remora
70%inclusion151 decks215 decks
50%synergy
Amphibian Downpour
53%inclusion115 decks215 decks
49%synergy
Dance of the Dead
45%inclusion97 decks215 decks
43%synergy
Sevinne's Reclamation
51%inclusion110 decks215 decks
42%synergy
Top Cards
Swords to Plowshares
59%inclusion126 decks215 decks
-9%synergy
Blind Obedience
51%inclusion109 decks215 decks
39%synergy
Mesa Enchantress
47%inclusion101 decks215 decks
38%synergy
Entomb
47%inclusion101 decks215 decks
40%synergy
Starfield Mystic
45%inclusion97 decks215 decks
39%synergy
An Offer You Can't Refuse
44%inclusion95 decks215 decks
16%synergy
Scrabbling Skullcrab
42%inclusion90 decks215 decks
41%synergy
Seal of Cleansing
42%inclusion90 decks215 decks
40%synergy
Gravebreaker Lamia
41%inclusion88 decks215 decks
40%synergy
Demon of Fate's Design
40%inclusion86 decks215 decks
35%synergy
Game Changers
Smothering Tithe
56%inclusion120 decks215 decks
26%synergy
Rhystic Study
52%inclusion111 decks215 decks
21%synergy
Enlightened Tutor
40%inclusion85 decks215 decks
21%synergy
Demonic Tutor
35%inclusion76 decks215 decks
15%synergy
Force of Will
30%inclusion64 decks215 decks
18%synergy
Vampiric Tutor
30%inclusion64 decks215 decks
13%synergy
Ancient Tomb
30%inclusion64 decks215 decks
18%synergy
Fierce Guardianship
29%inclusion63 decks215 decks
9%synergy
Thassa's Oracle
29%inclusion63 decks215 decks
21%synergy
Cyclonic Rift
27%inclusion58 decks215 decks
5%synergy
Creatures
Abdel Adrian, Gorion's Ward
40%inclusion86 decks215 decks
38%synergy
Fear of Impostors
37%inclusion80 decks215 decks
36%synergy
Doomwake Giant
36%inclusion78 decks215 decks
31%synergy
Overlord of the Balemurk
36%inclusion77 decks215 decks
34%synergy
Esper Sentinel
35%inclusion76 decks215 decks
8%synergy
Fear of Sleep Paralysis
35%inclusion76 decks215 decks
31%synergy
Overlord of the Floodpits
34%inclusion73 decks215 decks
31%synergy
Lotho, Corrupt Shirriff
32%inclusion68 decks215 decks
14%synergy
Zur, Eternal Schemer
32%inclusion68 decks215 decks
28%synergy
Ondu Spiritdancer
28%inclusion60 decks215 decks
22%synergy
Grand Abolisher
27%inclusion58 decks215 decks
12%synergy
Victor, Valgavoth's Seneschal
27%inclusion57 decks215 decks
25%synergy
Valley Floodcaller
26%inclusion55 decks215 decks
22%synergy
Orcish Bowmasters
25%inclusion53 decks215 decks
15%synergy
Heliod, the Radiant Dawn
24%inclusion52 decks215 decks
21%synergy
Hullbreaker Horror
24%inclusion52 decks215 decks
18%synergy
Zur the Enchanter
23%inclusion50 decks215 decks
18%synergy
Ledger Shredder
20%inclusion44 decks215 decks
12%synergy
Displacer Kitten
19%inclusion41 decks215 decks
12%synergy
Sage of Mysteries
19%inclusion40 decks215 decks
18%synergy
Grim Guardian
19%inclusion40 decks215 decks
16%synergy
Ranger-Captain of Eos
18%inclusion39 decks215 decks
12%synergy
Ghostly Dancers
16%inclusion35 decks215 decks
14%synergy
Opposition Agent
16%inclusion34 decks215 decks
8%synergy
Archon of Sun's Grace
15%inclusion33 decks215 decks
11%synergy
Silent Hallcreeper
15%inclusion33 decks215 decks
11%synergy
Enduring Curiosity
14%inclusion31 decks215 decks
6%synergy
Moon-Blessed Cleric
14%inclusion30 decks215 decks
9%synergy
Lurrus of the Dream-Den
13%inclusion29 decks215 decks
12%synergy
Aminatou, Veil Piercer
13%inclusion29 decks215 decks
12%synergy
Drannith Magistrate
13%inclusion28 decks215 decks
6%synergy
Hedron Crab
12%inclusion26 decks215 decks
11%synergy
Mockingbird
12%inclusion26 decks215 decks
8%synergy
Witch Enchanter
10%inclusion22 decks215 decks
3%synergy
Talion, the Kindly Lord
10%inclusion22 decks215 decks
3%synergy
Leonin Relic-Warder
10%inclusion21 decks215 decks
10%synergy
Faerie Mastermind
10%inclusion21 decks215 decks
-0%synergy
Alseid of Life's Bounty
9.3%inclusion20 decks215 decks
8%synergy
Mindwrack Harpy
9.3%inclusion20 decks215 decks
9%synergy
Archivist of Oghma
8.8%inclusion19 decks215 decks
3%synergy
Overlord of the Mistmoors
8.8%inclusion19 decks215 decks
7%synergy
Balemurk Leech
8.8%inclusion19 decks215 decks
8%synergy
Auriok Salvagers
8.8%inclusion19 decks215 decks
9%synergy
Wan Shi Tong, Librarian
8.8%inclusion10 decks114 decks
4%synergy
Psychic Frog
8.4%inclusion18 decks215 decks
1%synergy
Voice of Victory
8.1%inclusion13 decks161 decks
-0%synergy
Phyrexian Metamorph
7.9%inclusion17 decks215 decks
0%synergy
Soaring Lightbringer
7.9%inclusion17 decks215 decks
4%synergy
Athreos, Shroud-Veiled
7.9%inclusion17 decks215 decks
4%synergy
Summon: Yojimbo
7.5%inclusion11 decks146 decks
7%synergy
Instants
Swan Song
40%inclusion86 decks215 decks
20%synergy
Dark Ritual
39%inclusion83 decks215 decks
18%synergy
Counterspell
31%inclusion66 decks215 decks
-11%synergy
Silence
29%inclusion62 decks215 decks
19%synergy
Force of Negation
26%inclusion55 decks215 decks
14%synergy
Sink into Stupor
25%inclusion54 decks215 decks
12%synergy
Arcane Denial
25%inclusion53 decks215 decks
4%synergy
Dovin's Veto
24%inclusion51 decks215 decks
-3%synergy
Flusterstorm
24%inclusion51 decks215 decks
16%synergy
Path to Exile
23%inclusion50 decks215 decks
-19%synergy
Demonic Consultation
23%inclusion49 decks215 decks
15%synergy
Mystical Tutor
23%inclusion49 decks215 decks
12%synergy
Tainted Pact
22%inclusion48 decks215 decks
16%synergy
Intuition
22%inclusion47 decks215 decks
20%synergy
Mana Drain
21%inclusion46 decks215 decks
4%synergy
Borne Upon a Wind
21%inclusion46 decks215 decks
17%synergy
Mindbreak Trap
21%inclusion45 decks215 decks
14%synergy
Mental Misstep
20%inclusion42 decks215 decks
13%synergy
Pact of Negation
19%inclusion40 decks215 decks
11%synergy
Cabal Ritual
17%inclusion36 decks215 decks
13%synergy
Gifts Ungiven
15%inclusion32 decks215 decks
12%synergy
Frantic Search
14%inclusion31 decks215 decks
-5%synergy
Void Rend
14%inclusion30 decks215 decks
-21%synergy
Thirst for Meaning
13%inclusion28 decks215 decks
12%synergy
Into the Flood Maw
13%inclusion28 decks215 decks
9%synergy
Fell the Profane
12%inclusion26 decks215 decks
3%synergy
Negate
12%inclusion25 decks215 decks
-4%synergy
Chain of Vapor
11%inclusion23 decks215 decks
8%synergy
Inkshield
11%inclusion23 decks215 decks
1%synergy
Brainstorm
8.4%inclusion18 decks215 decks
-8%synergy
Muddle the Mixture
7.4%inclusion16 decks215 decks
4%synergy
Retraction Helix
7.4%inclusion16 decks215 decks
7%synergy
Teferi's Protection
7.0%inclusion15 decks215 decks
-9%synergy
Brain Freeze
7.0%inclusion15 decks215 decks
6%synergy
Anguished Unmaking
7.0%inclusion15 decks215 decks
-19%synergy
Darkblast
6.0%inclusion13 decks215 decks
6%synergy
Faithful Mending
6.0%inclusion13 decks215 decks
2%synergy
Otherworldly Gaze
6.0%inclusion13 decks215 decks
4%synergy
Deadly Rollick
5.6%inclusion12 decks215 decks
-11%synergy
Strix Serenade
5.6%inclusion12 decks215 decks
2%synergy
Waterlogged Teachings
5.6%inclusion12 decks215 decks
1%synergy
Generous Gift
5.6%inclusion12 decks215 decks
-8%synergy
Dispel
5.1%inclusion11 decks215 decks
2%synergy
Sorceries
Windfall
28%inclusion60 decks215 decks
15%synergy
Toxic Deluge
26%inclusion55 decks215 decks
6%synergy
Reanimate
20%inclusion43 decks215 decks
4%synergy
Imperial Seal
17%inclusion37 decks215 decks
10%synergy
Dance of the Manse
17%inclusion37 decks215 decks
14%synergy
Redress Fate
17%inclusion36 decks215 decks
12%synergy
Extinguish All Hope
15%inclusion32 decks215 decks
13%synergy
Singularity Rupture
12%inclusion16 decks135 decks
10%synergy
Supreme Verdict
12%inclusion25 decks215 decks
-3%synergy
Lively Dirge
11%inclusion24 decks215 decks
10%synergy
Idyllic Tutor
11%inclusion23 decks215 decks
6%synergy
Beseech the Mirror
11%inclusion23 decks215 decks
7%synergy
Resurgent Belief
10%inclusion22 decks215 decks
8%synergy
Glimpse the Unthinkable
10%inclusion22 decks215 decks
10%synergy
Demonic Counsel
10%inclusion22 decks215 decks
9%synergy
Damn
10%inclusion21 decks215 decks
-10%synergy
Space-Time Anomaly
8.9%inclusion12 decks135 decks
7%synergy
Buried Alive
8.8%inclusion19 decks215 decks
5%synergy
Time Wipe
7.9%inclusion17 decks215 decks
2%synergy
Unmarked Grave
7.4%inclusion16 decks215 decks
6%synergy
Replenish
7.4%inclusion16 decks215 decks
6%synergy
Yawgmoth's Will
6.5%inclusion14 decks215 decks
5%synergy
Mnemonic Betrayal
6.5%inclusion14 decks215 decks
4%synergy
Ponder
5.6%inclusion12 decks215 decks
-3%synergy
Traumatize
5.6%inclusion12 decks215 decks
5%synergy
Farewell
5.1%inclusion11 decks215 decks
-7%synergy
Utility Artifacts
Mesmeric Orb
25%inclusion53 decks215 decks
24%synergy
The One Ring
21%inclusion45 decks215 decks
9%synergy
Wishclaw Talisman
19%inclusion41 decks215 decks
12%synergy
Lightning Greaves
10%inclusion22 decks215 decks
-13%synergy
Cloud Key
6.5%inclusion14 decks215 decks
3%synergy
Enchantments
Mirrormade
40%inclusion85 decks215 decks
30%synergy
Sphere of Safety
37%inclusion80 decks215 decks
28%synergy
Grasp of Fate
36%inclusion77 decks215 decks
30%synergy
Propaganda
34%inclusion74 decks215 decks
5%synergy
Ghostly Prison
32%inclusion69 decks215 decks
9%synergy
Touch the Spirit Realm
30%inclusion64 decks215 decks
28%synergy
Starfield of Nyx
29%inclusion63 decks215 decks
25%synergy
Cemetery Tampering
28%inclusion61 decks215 decks
28%synergy
Secret Arcade // Dusty Parlor
28%inclusion61 decks215 decks
24%synergy
Seal of Removal
28%inclusion61 decks215 decks
28%synergy
Estrid's Invocation
26%inclusion56 decks215 decks
21%synergy
The Meathook Massacre
25%inclusion54 decks215 decks
22%synergy
Sigil of the Empty Throne
25%inclusion54 decks215 decks
19%synergy
Tinybones Joins Up
23%inclusion50 decks215 decks
22%synergy
Cacophony Unleashed
23%inclusion49 decks215 decks
21%synergy
Necropotence
22%inclusion48 decks215 decks
16%synergy
Static Prison
22%inclusion48 decks215 decks
22%synergy
Stillness in Motion
21%inclusion34 decks160 decks
21%synergy
Darksteel Mutation
20%inclusion44 decks215 decks
14%synergy
Sheltered by Ghosts
20%inclusion44 decks215 decks
18%synergy
Copy Enchantment
20%inclusion42 decks215 decks
15%synergy
The Tale of Tamiyo
19%inclusion40 decks215 decks
18%synergy
Imprisoned in the Moon
18%inclusion38 decks215 decks
11%synergy
Greater Auramancy
18%inclusion38 decks215 decks
13%synergy
Monologue Tax
17%inclusion37 decks215 decks
10%synergy
Out of the Tombs
16%inclusion34 decks215 decks
15%synergy
Authority of the Consuls
15%inclusion33 decks215 decks
1%synergy
Aura of Silence
15%inclusion33 decks215 decks
12%synergy
Phyrexian Arena
15%inclusion33 decks215 decks
1%synergy
Ethereal Armor
15%inclusion32 decks215 decks
10%synergy
Leyline of Anticipation
14%inclusion31 decks215 decks
10%synergy
All That Glitters
14%inclusion31 decks215 decks
6%synergy
Black Market Connections
14%inclusion31 decks215 decks
-1%synergy
Teval's Judgment
14%inclusion22 decks161 decks
13%synergy
Solitary Confinement
13%inclusion29 decks215 decks
11%synergy
Nowhere to Run
13%inclusion29 decks215 decks
12%synergy
Court of Cunning
13%inclusion28 decks215 decks
12%synergy
Timely Ward
13%inclusion28 decks215 decks
8%synergy
Trouble in Pairs
13%inclusion28 decks215 decks
8%synergy
Land Tax
13%inclusion27 decks215 decks
6%synergy
Defiled Crypt // Cadaver Lab
13%inclusion27 decks215 decks
12%synergy
Extravagant Replication
12%inclusion26 decks215 decks
7%synergy
Oubliette
12%inclusion26 decks215 decks
11%synergy
Founding the Third Path
11%inclusion23 decks215 decks
11%synergy
Secrets of the Dead
11%inclusion23 decks215 decks
10%synergy
Hallowed Haunting
11%inclusion23 decks215 decks
8%synergy
Unable to Scream
10%inclusion22 decks215 decks
9%synergy
Shark Typhoon
10%inclusion21 decks215 decks
4%synergy
Chronic Flooding
9.3%inclusion20 decks215 decks
9%synergy
Bottomless Pool // Locker Room
8.8%inclusion19 decks215 decks
7%synergy
Battles
Invasion of Theros
5.6%inclusion12 decks215 decks
4%synergy
Planeswalkers
Teferi, Time Raveler
17%inclusion37 decks215 decks
9%synergy
Utility Lands
Hall of Heliod's Generosity
47%inclusion102 decks215 decks
35%synergy
Otawara, Soaring City
37%inclusion79 decks215 decks
18%synergy
Bojuka Bog
27%inclusion58 decks215 decks
0%synergy
Urza's Saga
18%inclusion39 decks215 decks
7%synergy
Cephalid Coliseum
16%inclusion35 decks215 decks
13%synergy
Takenuma, Abandoned Mire
14%inclusion30 decks215 decks
8%synergy
Emergence Zone
13%inclusion28 decks215 decks
11%synergy
Serra's Sanctum
9.3%inclusion20 decks215 decks
8%synergy
Reliquary Tower
7.4%inclusion16 decks215 decks
-27%synergy
Urborg, Tomb of Yawgmoth
7.4%inclusion16 decks215 decks
-6%synergy
Eiganjo, Seat of the Empire
6.0%inclusion13 decks215 decks
1%synergy
Temple of the False God
5.1%inclusion11 decks215 decks
-3%synergy
City of Traitors
5.1%inclusion11 decks215 decks
4%synergy
Mana Artifacts
Sol Ring
89%inclusion191 decks215 decks
-1%synergy
Arcane Signet
87%inclusion188 decks215 decks
-0%synergy
Talisman of Dominance
64%inclusion137 decks215 decks
13%synergy
Talisman of Progress
60%inclusion130 decks215 decks
16%synergy
Talisman of Hierarchy
52%inclusion112 decks215 decks
7%synergy
Fellwar Stone
43%inclusion92 decks215 decks
10%synergy
Lotus Petal
27%inclusion59 decks215 decks
17%synergy
Mana Vault
27%inclusion57 decks215 decks
18%synergy
Chrome Mox
26%inclusion56 decks215 decks
17%synergy
Azorius Signet
24%inclusion52 decks215 decks
-5%synergy
Mox Opal
21%inclusion45 decks215 decks
13%synergy
Orzhov Signet
20%inclusion44 decks215 decks
-10%synergy
Mox Diamond
20%inclusion44 decks215 decks
14%synergy
Dimir Signet
20%inclusion42 decks215 decks
-10%synergy
Lion's Eye Diamond
14%inclusion31 decks215 decks
12%synergy
Mind Stone
10%inclusion21 decks215 decks
-2%synergy
Mox Amber
8.8%inclusion19 decks215 decks
3%synergy
Grim Monolith
7.9%inclusion17 decks215 decks
5%synergy
Lands
Command Tower
96%inclusion206 decks215 decks
3%synergy
Island
87%inclusion187 decks215 decks
-6%synergy
Swamp
83%inclusion178 decks215 decks
-9%synergy
Plains
81%inclusion174 decks215 decks
-11%synergy
Watery Grave
71%inclusion152 decks215 decks
19%synergy
Hallowed Fountain
70%inclusion151 decks215 decks
19%synergy
Godless Shrine
69%inclusion149 decks215 decks
17%synergy
Exotic Orchard
61%inclusion132 decks215 decks
2%synergy
Flooded Strand
60%inclusion129 decks215 decks
21%synergy
Polluted Delta
59%inclusion126 decks215 decks
20%synergy
Marsh Flats
57%inclusion122 decks215 decks
21%synergy
Caves of Koilos
50%inclusion107 decks215 decks
14%synergy
Adarkar Wastes
48%inclusion104 decks215 decks
15%synergy
Underground River
46%inclusion98 decks215 decks
10%synergy
Sea of Clouds
44%inclusion94 decks215 decks
9%synergy
Morphic Pool
42%inclusion91 decks215 decks
9%synergy
Undercity Sewers
40%inclusion87 decks215 decks
26%synergy
Arcane Sanctum
39%inclusion84 decks215 decks
-15%synergy
Vault of Champions
38%inclusion81 decks215 decks
6%synergy
Raffine's Tower
37%inclusion80 decks215 decks
-3%synergy
Glacial Fortress
34%inclusion73 decks215 decks
-10%synergy
City of Brass
34%inclusion73 decks215 decks
18%synergy
Meticulous Archive
32%inclusion69 decks215 decks
18%synergy
Isolated Chapel
32%inclusion68 decks215 decks
-11%synergy
Tundra
31%inclusion66 decks215 decks
15%synergy
Misty Rainforest
31%inclusion66 decks215 decks
20%synergy
Bloodstained Mire
31%inclusion66 decks215 decks
20%synergy
Underground Sea
30%inclusion65 decks215 decks
14%synergy
Verdant Catacombs
30%inclusion65 decks215 decks
21%synergy
Scrubland
30%inclusion65 decks215 decks
14%synergy
Mana Confluence
30%inclusion64 decks215 decks
16%synergy
Shadowy Backstreet
28%inclusion61 decks215 decks
16%synergy
Drowned Catacomb
28%inclusion61 decks215 decks
-11%synergy
Windswept Heath
27%inclusion59 decks215 decks
18%synergy
Scalding Tarn
27%inclusion59 decks215 decks
17%synergy
Sink into Stupor
25%inclusion54 decks215 decks
12%synergy
Gemstone Caverns
24%inclusion51 decks215 decks
16%synergy
Valgavoth's Lair
23%inclusion49 decks215 decks
20%synergy
Arid Mesa
23%inclusion49 decks215 decks
14%synergy
Floodfarm Verge
23%inclusion49 decks215 decks
12%synergy
Prairie Stream
22%inclusion48 decks215 decks
-18%synergy
Gloomlake Verge
21%inclusion46 decks215 decks
10%synergy
Sunken Hollow
21%inclusion45 decks215 decks
-19%synergy
Deserted Beach
21%inclusion45 decks215 decks
0%synergy
Contaminated Landscape
20%inclusion43 decks215 decks
7%synergy
Evolving Wilds
20%inclusion42 decks215 decks
-5%synergy
Terramorphic Expanse
19%inclusion41 decks215 decks
4%synergy
Shipwreck Marsh
17%inclusion37 decks215 decks
-3%synergy
Obscura Storefront
15%inclusion33 decks215 decks
7%synergy
Tainted Field
15%inclusion32 decks215 decks
8%synergy
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