The Master of Keys (Commander) - Expensive Upgraded

The Master of Keys
Rank #301
61decks
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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
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Utility Lands
Mana Artifacts
Lands
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Falcon and Redwing
6.7%inclusion1 decks15 decks
6%synergy
High Synergy Cards
Ripples of Undeath
79%inclusion48 decks61 decks
76%synergy
Necromancy
77%inclusion47 decks61 decks
73%synergy
Animate Dead
80%inclusion49 decks61 decks
71%synergy
Inquisitive Glimmer
69%inclusion42 decks61 decks
62%synergy
Dress Down
57%inclusion35 decks61 decks
55%synergy
Dance of the Dead
54%inclusion33 decks61 decks
52%synergy
Amphibian Downpour
56%inclusion34 decks61 decks
51%synergy
Entomb
54%inclusion33 decks61 decks
47%synergy
Entity Tracker
51%inclusion31 decks61 decks
45%synergy
Gravebreaker Lamia
44%inclusion27 decks61 decks
43%synergy
Top Cards
Swords to Plowshares
57%inclusion35 decks61 decks
-10%synergy
Mystic Remora
56%inclusion34 decks61 decks
35%synergy
Propaganda
54%inclusion33 decks61 decks
25%synergy
Mirrormade
52%inclusion32 decks61 decks
43%synergy
Sevinne's Reclamation
51%inclusion31 decks61 decks
42%synergy
Sphere of Safety
51%inclusion31 decks61 decks
41%synergy
Demon of Fate's Design
46%inclusion28 decks61 decks
41%synergy
Fear of Impostors
44%inclusion27 decks61 decks
43%synergy
Mana Drain
44%inclusion27 decks61 decks
27%synergy
Mesa Enchantress
44%inclusion27 decks61 decks
36%synergy
Game Changers
Smothering Tithe
56%inclusion34 decks61 decks
26%synergy
Rhystic Study
51%inclusion31 decks61 decks
21%synergy
Serra's Sanctum
23%inclusion14 decks61 decks
21%synergy
Enlightened Tutor
20%inclusion12 decks61 decks
1%synergy
Demonic Tutor
15%inclusion9 decks61 decks
-5%synergy
Gifts Ungiven
15%inclusion9 decks61 decks
12%synergy
Thassa's Oracle
13%inclusion8 decks61 decks
4%synergy
Intuition
11%inclusion7 decks61 decks
10%synergy
Teferi's Protection
10%inclusion6 decks61 decks
-6%synergy
The One Ring
10%inclusion6 decks61 decks
-3%synergy
Creatures
Overlord of the Balemurk
43%inclusion26 decks61 decks
41%synergy
Starfield Mystic
41%inclusion25 decks61 decks
35%synergy
Scrabbling Skullcrab
39%inclusion24 decks61 decks
38%synergy
Esper Sentinel
36%inclusion22 decks61 decks
9%synergy
Zur the Enchanter
36%inclusion22 decks61 decks
31%synergy
Victor, Valgavoth's Seneschal
31%inclusion19 decks61 decks
29%synergy
Fear of Sleep Paralysis
31%inclusion19 decks61 decks
26%synergy
Lotho, Corrupt Shirriff
30%inclusion18 decks61 decks
12%synergy
Overlord of the Floodpits
30%inclusion18 decks61 decks
26%synergy
Doomwake Giant
28%inclusion17 decks61 decks
22%synergy
Ondu Spiritdancer
28%inclusion17 decks61 decks
22%synergy
Hedron Crab
28%inclusion17 decks61 decks
27%synergy
Zur, Eternal Schemer
28%inclusion17 decks61 decks
25%synergy
Enduring Curiosity
23%inclusion14 decks61 decks
15%synergy
Abdel Adrian, Gorion's Ward
23%inclusion14 decks61 decks
21%synergy
Sage of Mysteries
21%inclusion13 decks61 decks
21%synergy
Witch Enchanter
20%inclusion12 decks61 decks
13%synergy
Ghostly Dancers
16%inclusion10 decks61 decks
14%synergy
Hullbreaker Horror
16%inclusion10 decks61 decks
10%synergy
Ledger Shredder
16%inclusion10 decks61 decks
8%synergy
Displacer Kitten
15%inclusion9 decks61 decks
8%synergy
Valley Floodcaller
15%inclusion9 decks61 decks
11%synergy
Silent Hallcreeper
15%inclusion9 decks61 decks
10%synergy
Grand Abolisher
15%inclusion9 decks61 decks
0%synergy
Lurrus of the Dream-Den
13%inclusion8 decks61 decks
12%synergy
Overlord of the Mistmoors
13%inclusion8 decks61 decks
11%synergy
Laboratory Maniac
13%inclusion8 decks61 decks
10%synergy
Grim Guardian
13%inclusion8 decks61 decks
11%synergy
Boggart Trawler
13%inclusion8 decks61 decks
10%synergy
Moon-Blessed Cleric
13%inclusion8 decks61 decks
8%synergy
Psychic Frog
13%inclusion8 decks61 decks
6%synergy
Archon of Sun's Grace
11%inclusion7 decks61 decks
7%synergy
Angel of Suffering
11%inclusion7 decks61 decks
11%synergy
Aminatou, Veil Piercer
11%inclusion7 decks61 decks
10%synergy
Heliod, the Radiant Dawn
11%inclusion7 decks61 decks
8%synergy
Valgavoth, Terror Eater
11%inclusion7 decks61 decks
8%synergy
Sheoldred, the Apocalypse
10%inclusion6 decks61 decks
1%synergy
Soaring Lightbringer
10%inclusion6 decks61 decks
6%synergy
Emet-Selch of the Third Seat
9.3%inclusion5 decks54 decks
-0%synergy
Voice of Victory
8.8%inclusion5 decks57 decks
0%synergy
Eiganjo Dynastorian
8.3%inclusion2 decks24 decks
7%synergy
Stenn, Paranoid Partisan
8.2%inclusion5 decks61 decks
7%synergy
Doom Whisperer
8.2%inclusion5 decks61 decks
7%synergy
Stitcher's Supplier
8.2%inclusion5 decks61 decks
7%synergy
Hydroelectric Specimen
8.2%inclusion5 decks61 decks
5%synergy
Spirited Companion
8.2%inclusion5 decks61 decks
6%synergy
Talion, the Kindly Lord
8.2%inclusion5 decks61 decks
1%synergy
Leonin Relic-Warder
8.2%inclusion5 decks61 decks
8%synergy
Neerdiv, Devious Diver
8.2%inclusion5 decks61 decks
8%synergy
Summon: Yojimbo
7.4%inclusion4 decks54 decks
6%synergy
Instants
Swan Song
43%inclusion26 decks61 decks
22%synergy
An Offer You Can't Refuse
36%inclusion22 decks61 decks
8%synergy
Dark Ritual
36%inclusion22 decks61 decks
16%synergy
Sink into Stupor
36%inclusion22 decks61 decks
23%synergy
Counterspell
36%inclusion22 decks61 decks
-6%synergy
Arcane Denial
28%inclusion17 decks61 decks
8%synergy
Path to Exile
28%inclusion17 decks61 decks
-14%synergy
Fell the Profane
18%inclusion11 decks61 decks
9%synergy
Dovin's Veto
16%inclusion10 decks61 decks
-10%synergy
Void Rend
16%inclusion10 decks61 decks
-18%synergy
Cabal Ritual
15%inclusion9 decks61 decks
11%synergy
Frantic Search
13%inclusion8 decks61 decks
-6%synergy
Otherworldly Gaze
13%inclusion8 decks61 decks
11%synergy
Anguished Unmaking
11%inclusion7 decks61 decks
-15%synergy
Flusterstorm
11%inclusion7 decks61 decks
4%synergy
Force of Negation
11%inclusion7 decks61 decks
-0%synergy
Brain Freeze
10%inclusion6 decks61 decks
9%synergy
Strix Serenade
10%inclusion6 decks61 decks
7%synergy
Fierce Guardianship
10%inclusion6 decks61 decks
-10%synergy
Erode
8.3%inclusion2 decks24 decks
5%synergy
Deadly Rollick
8.2%inclusion5 decks61 decks
-8%synergy
Muddle the Mixture
8.2%inclusion5 decks61 decks
5%synergy
Darkblast
8.2%inclusion5 decks61 decks
8%synergy
Thirst for Meaning
8.2%inclusion5 decks61 decks
7%synergy
Silence
8.2%inclusion5 decks61 decks
-2%synergy
Perplex
8.2%inclusion5 decks61 decks
7%synergy
Cyclonic Rift
8.2%inclusion5 decks61 decks
-14%synergy
Pact of Negation
8.2%inclusion5 decks61 decks
1%synergy
Mental Misstep
6.6%inclusion4 decks61 decks
0%synergy
Tainted Pact
6.6%inclusion4 decks61 decks
-0%synergy
Chain of Vapor
6.6%inclusion4 decks61 decks
4%synergy
Negate
6.6%inclusion4 decks61 decks
-10%synergy
Culling the Weak
6.6%inclusion4 decks61 decks
5%synergy
Into the Flood Maw
6.6%inclusion4 decks61 decks
3%synergy
Demonic Consultation
6.6%inclusion4 decks61 decks
-1%synergy
Waterlogged Teachings
6.6%inclusion4 decks61 decks
2%synergy
Vampiric Tutor
6.6%inclusion4 decks61 decks
-10%synergy
Sorceries
Windfall
28%inclusion17 decks61 decks
15%synergy
Reanimate
28%inclusion17 decks61 decks
12%synergy
Replenish
26%inclusion16 decks61 decks
25%synergy
Toxic Deluge
25%inclusion15 decks61 decks
5%synergy
Glimpse the Unthinkable
20%inclusion12 decks61 decks
19%synergy
Redress Fate
20%inclusion12 decks61 decks
14%synergy
Damn
16%inclusion10 decks61 decks
-4%synergy
Singularity Rupture
16%inclusion8 decks49 decks
14%synergy
Idyllic Tutor
13%inclusion8 decks61 decks
9%synergy
Beseech the Mirror
13%inclusion8 decks61 decks
9%synergy
Extinguish All Hope
13%inclusion8 decks61 decks
12%synergy
Space-Time Anomaly
13%inclusion6 decks48 decks
11%synergy
Supreme Verdict
11%inclusion7 decks61 decks
-3%synergy
Buried Alive
11%inclusion7 decks61 decks
7%synergy
Dance of the Manse
11%inclusion7 decks61 decks
8%synergy
Lively Dirge
10%inclusion6 decks61 decks
9%synergy
Farewell
10%inclusion6 decks61 decks
-2%synergy
Austere Command
8.2%inclusion5 decks61 decks
-0%synergy
Blasphemous Edict
8.2%inclusion5 decks61 decks
6%synergy
Diabolic Intent
6.6%inclusion4 decks61 decks
2%synergy
Demonic Counsel
6.6%inclusion4 decks61 decks
6%synergy
Sea Gate Restoration
6.6%inclusion4 decks61 decks
4%synergy
Agadeem's Awakening
6.6%inclusion4 decks61 decks
4%synergy
Utility Artifacts
Mesmeric Orb
38%inclusion23 decks61 decks
37%synergy
Crucible of Worlds
11%inclusion7 decks61 decks
11%synergy
Wishclaw Talisman
11%inclusion7 decks61 decks
4%synergy
Lightning Greaves
11%inclusion7 decks61 decks
-11%synergy
Cloud Key
10%inclusion6 decks61 decks
7%synergy
Perpetual Timepiece
6.6%inclusion4 decks61 decks
6%synergy
Enchantments
Seal of Cleansing
43%inclusion26 decks61 decks
41%synergy
Ghostly Prison
41%inclusion25 decks61 decks
18%synergy
The Meathook Massacre
39%inclusion24 decks61 decks
36%synergy
Blind Obedience
39%inclusion24 decks61 decks
28%synergy
Out of the Tombs
33%inclusion20 decks61 decks
32%synergy
Secret Arcade // Dusty Parlor
33%inclusion20 decks61 decks
28%synergy
Sigil of the Empty Throne
31%inclusion19 decks61 decks
25%synergy
Starfield of Nyx
31%inclusion19 decks61 decks
27%synergy
Grasp of Fate
30%inclusion18 decks61 decks
23%synergy
Cemetery Tampering
30%inclusion18 decks61 decks
29%synergy
Stillness in Motion
28%inclusion16 decks57 decks
28%synergy
Estrid's Invocation
28%inclusion17 decks61 decks
23%synergy
Black Market Connections
28%inclusion17 decks61 decks
13%synergy
Greater Auramancy
28%inclusion17 decks61 decks
24%synergy
Imprisoned in the Moon
26%inclusion16 decks61 decks
19%synergy
Seal of Removal
26%inclusion16 decks61 decks
26%synergy
Copy Enchantment
26%inclusion16 decks61 decks
21%synergy
Polluted Cistern // Dim Oubliette
25%inclusion15 decks61 decks
24%synergy
Darksteel Mutation
23%inclusion14 decks61 decks
17%synergy
Tinybones Joins Up
20%inclusion12 decks61 decks
19%synergy
Trouble in Pairs
20%inclusion12 decks61 decks
15%synergy
Leyline of Anticipation
20%inclusion12 decks61 decks
15%synergy
Touch the Spirit Realm
18%inclusion11 decks61 decks
16%synergy
Static Prison
18%inclusion11 decks61 decks
18%synergy
Solitary Confinement
18%inclusion11 decks61 decks
16%synergy
Authority of the Consuls
16%inclusion10 decks61 decks
3%synergy
Out of Time
16%inclusion10 decks61 decks
15%synergy
Bloodchief Ascension
16%inclusion10 decks61 decks
10%synergy
Aura of Silence
16%inclusion10 decks61 decks
13%synergy
No Mercy
16%inclusion10 decks61 decks
14%synergy
Court of Cunning
15%inclusion9 decks61 decks
14%synergy
Cacophony Unleashed
15%inclusion9 decks61 decks
13%synergy
All That Glitters
15%inclusion9 decks61 decks
7%synergy
Monologue Tax
15%inclusion9 decks61 decks
8%synergy
Defiled Crypt // Cadaver Lab
15%inclusion9 decks61 decks
14%synergy
The Tale of Tamiyo
15%inclusion9 decks61 decks
14%synergy
Teval's Judgment
14%inclusion8 decks57 decks
13%synergy
Chronic Flooding
13%inclusion8 decks61 decks
13%synergy
Sheltered by Ghosts
13%inclusion8 decks61 decks
10%synergy
Land Tax
13%inclusion8 decks61 decks
7%synergy
Copy Artifact
13%inclusion8 decks61 decks
12%synergy
Timely Ward
13%inclusion8 decks61 decks
8%synergy
Changing Loyalty
13%inclusion3 decks24 decks
12%synergy
Bottomless Pool // Locker Room
11%inclusion7 decks61 decks
10%synergy
Phyrexian Arena
11%inclusion7 decks61 decks
-3%synergy
Funeral Room // Awakening Hall
11%inclusion7 decks61 decks
11%synergy
Founding the Third Path
10%inclusion6 decks61 decks
10%synergy
Extravagant Replication
10%inclusion6 decks61 decks
5%synergy
Attunement
10%inclusion6 decks61 decks
10%synergy
Shark Typhoon
10%inclusion6 decks61 decks
4%synergy
Planeswalkers
Teferi, Time Raveler
11%inclusion7 decks61 decks
3%synergy
Ashiok, Dream Render
10%inclusion6 decks61 decks
8%synergy
Jace, Wielder of Mysteries
8.2%inclusion5 decks61 decks
7%synergy
Utility Lands
Hall of Heliod's Generosity
46%inclusion28 decks61 decks
33%synergy
Otawara, Soaring City
43%inclusion26 decks61 decks
24%synergy
Takenuma, Abandoned Mire
31%inclusion19 decks61 decks
25%synergy
Bojuka Bog
30%inclusion18 decks61 decks
3%synergy
Urza's Saga
25%inclusion15 decks61 decks
13%synergy
Cephalid Coliseum
25%inclusion15 decks61 decks
21%synergy
Urborg, Tomb of Yawgmoth
20%inclusion12 decks61 decks
7%synergy
Mystic Sanctuary
15%inclusion9 decks61 decks
11%synergy
Reliquary Tower
11%inclusion7 decks61 decks
-23%synergy
Ancient Tomb
8.2%inclusion5 decks61 decks
-4%synergy
Eiganjo, Seat of the Empire
8.2%inclusion5 decks61 decks
3%synergy
Minamo, School at Water's Edge
6.6%inclusion4 decks61 decks
3%synergy
Command Beacon
6.6%inclusion4 decks61 decks
4%synergy
Bazaar of Baghdad
6.6%inclusion4 decks61 decks
6%synergy
Mana Artifacts
Sol Ring
93%inclusion57 decks61 decks
4%synergy
Arcane Signet
84%inclusion51 decks61 decks
-4%synergy
Talisman of Progress
57%inclusion35 decks61 decks
13%synergy
Talisman of Dominance
56%inclusion34 decks61 decks
5%synergy
Talisman of Hierarchy
54%inclusion33 decks61 decks
9%synergy
Fellwar Stone
39%inclusion24 decks61 decks
6%synergy
Azorius Signet
25%inclusion15 decks61 decks
-5%synergy
Orzhov Signet
20%inclusion12 decks61 decks
-12%synergy
Lotus Petal
16%inclusion10 decks61 decks
6%synergy
Dimir Signet
16%inclusion10 decks61 decks
-13%synergy
Mox Opal
10%inclusion6 decks61 decks
2%synergy
Mox Amber
8.2%inclusion5 decks61 decks
2%synergy
Commander's Sphere
6.6%inclusion4 decks61 decks
-10%synergy
Lands
Command Tower
100%inclusion61 decks61 decks
7%synergy
Tundra
97%inclusion59 decks61 decks
81%synergy
Underground Sea
97%inclusion59 decks61 decks
81%synergy
Scrubland
97%inclusion59 decks61 decks
81%synergy
Hallowed Fountain
97%inclusion59 decks61 decks
46%synergy
Watery Grave
97%inclusion59 decks61 decks
45%synergy
Godless Shrine
95%inclusion58 decks61 decks
43%synergy
Polluted Delta
92%inclusion56 decks61 decks
54%synergy
Marsh Flats
92%inclusion56 decks61 decks
56%synergy
Flooded Strand
92%inclusion56 decks61 decks
53%synergy
Swamp
84%inclusion51 decks61 decks
-8%synergy
Island
84%inclusion51 decks61 decks
-10%synergy
Plains
79%inclusion48 decks61 decks
-13%synergy
Raffine's Tower
69%inclusion42 decks61 decks
28%synergy
Undercity Sewers
66%inclusion40 decks61 decks
51%synergy
Sea of Clouds
64%inclusion39 decks61 decks
29%synergy
Vault of Champions
64%inclusion39 decks61 decks
32%synergy
Meticulous Archive
61%inclusion37 decks61 decks
47%synergy
Shadowy Backstreet
59%inclusion36 decks61 decks
46%synergy
Morphic Pool
57%inclusion35 decks61 decks
24%synergy
Exotic Orchard
52%inclusion32 decks61 decks
-7%synergy
Misty Rainforest
51%inclusion31 decks61 decks
40%synergy
Arid Mesa
48%inclusion29 decks61 decks
38%synergy
Windswept Heath
44%inclusion27 decks61 decks
35%synergy
Scalding Tarn
44%inclusion27 decks61 decks
34%synergy
Mana Confluence
44%inclusion27 decks61 decks
30%synergy
City of Brass
41%inclusion25 decks61 decks
26%synergy
Bloodstained Mire
41%inclusion25 decks61 decks
30%synergy
Verdant Catacombs
39%inclusion24 decks61 decks
30%synergy
Sink into Stupor
36%inclusion22 decks61 decks
23%synergy
Floodfarm Verge
34%inclusion21 decks61 decks
23%synergy
Caves of Koilos
30%inclusion18 decks61 decks
-6%synergy
Underground River
30%inclusion18 decks61 decks
-6%synergy
Adarkar Wastes
28%inclusion17 decks61 decks
-5%synergy
Prismatic Vista
26%inclusion16 decks61 decks
22%synergy
Arcane Sanctum
26%inclusion16 decks61 decks
-28%synergy
Gloomlake Verge
26%inclusion16 decks61 decks
15%synergy
Glacial Fortress
23%inclusion14 decks61 decks
-21%synergy
Isolated Chapel
21%inclusion13 decks61 decks
-21%synergy
Witch Enchanter
20%inclusion12 decks61 decks
13%synergy
Drowned Catacomb
20%inclusion12 decks61 decks
-19%synergy
Fell the Profane
18%inclusion11 decks61 decks
9%synergy
Bleachbone Verge
18%inclusion11 decks61 decks
9%synergy
Gemstone Caverns
18%inclusion11 decks61 decks
11%synergy
Reflecting Pool
15%inclusion9 decks61 decks
7%synergy
Shattered Sanctum
15%inclusion9 decks61 decks
-3%synergy
Deserted Beach
15%inclusion9 decks61 decks
-6%synergy
Brightclimb Pathway
13%inclusion8 decks61 decks
7%synergy
Shipwreck Marsh
13%inclusion8 decks61 decks
-7%synergy
Valgavoth's Lair
13%inclusion8 decks61 decks
11%synergy
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