The Master of Keys (Commander) - Upgraded

The Master of Keys
Rank #304
602decks
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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
Battles
Utility Lands
Mana Artifacts
Lands
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Gleaming Bastion
2.3%inclusion2 decks87 decks
1%synergy
King T'Challa
2.2%inclusion2 decks92 decks
1%synergy
Doom's Time Platform
1.5%inclusion1 decks68 decks
1%synergy
Stark's Ingenuity
1.4%inclusion1 decks73 decks
1%synergy
Falcon and Redwing
1.4%inclusion1 decks73 decks
1%synergy
High Synergy Cards
Inquisitive Glimmer
77%inclusion464 decks602 decks
70%synergy
Ripples of Undeath
72%inclusion435 decks602 decks
70%synergy
Entity Tracker
68%inclusion408 decks602 decks
62%synergy
Starfield Mystic
65%inclusion393 decks602 decks
59%synergy
Gravebreaker Lamia
58%inclusion351 decks602 decks
57%synergy
Animate Dead
67%inclusion402 decks602 decks
57%synergy
Mesa Enchantress
65%inclusion393 decks602 decks
57%synergy
Demon of Fate's Design
60%inclusion361 decks602 decks
55%synergy
Hall of Heliod's Generosity
65%inclusion391 decks602 decks
52%synergy
Scrabbling Skullcrab
52%inclusion311 decks602 decks
51%synergy
Top Cards
Doomwake Giant
55%inclusion334 decks602 decks
50%synergy
Fear of Sleep Paralysis
55%inclusion330 decks602 decks
50%synergy
Sphere of Safety
53%inclusion318 decks602 decks
43%synergy
Dress Down
52%inclusion316 decks602 decks
50%synergy
Swords to Plowshares
52%inclusion316 decks602 decks
-15%synergy
Mystic Remora
51%inclusion310 decks602 decks
31%synergy
Necromancy
51%inclusion308 decks602 decks
47%synergy
Mirrormade
50%inclusion303 decks602 decks
41%synergy
Overlord of the Floodpits
49%inclusion294 decks602 decks
45%synergy
Secret Arcade // Dusty Parlor
49%inclusion294 decks602 decks
44%synergy
Game Changers
Smothering Tithe
40%inclusion238 decks602 decks
9%synergy
Rhystic Study
30%inclusion181 decks602 decks
-0%synergy
Enlightened Tutor
13%inclusion81 decks602 decks
-5%synergy
Gifts Ungiven
9.5%inclusion57 decks602 decks
7%synergy
Necropotence
7.1%inclusion43 decks602 decks
1%synergy
Cyclonic Rift
6.6%inclusion40 decks602 decks
-16%synergy
Serra's Sanctum
6.1%inclusion37 decks602 decks
4%synergy
Demonic Tutor
6.1%inclusion37 decks602 decks
-14%synergy
Farewell
5.8%inclusion35 decks602 decks
-6%synergy
Fierce Guardianship
5.5%inclusion33 decks602 decks
-15%synergy
Creatures
Overlord of the Balemurk
47%inclusion280 decks602 decks
45%synergy
Ondu Spiritdancer
45%inclusion273 decks602 decks
39%synergy
Victor, Valgavoth's Seneschal
43%inclusion260 decks602 decks
41%synergy
Zur, Eternal Schemer
43%inclusion260 decks602 decks
40%synergy
Fear of Impostors
43%inclusion258 decks602 decks
41%synergy
Silent Hallcreeper
33%inclusion200 decks602 decks
29%synergy
Zur the Enchanter
32%inclusion195 decks602 decks
27%synergy
Ghostly Dancers
29%inclusion172 decks602 decks
26%synergy
Enduring Curiosity
27%inclusion160 decks602 decks
19%synergy
Heliod, the Radiant Dawn
25%inclusion153 decks602 decks
22%synergy
Grim Guardian
24%inclusion147 decks602 decks
22%synergy
Soaring Lightbringer
23%inclusion139 decks602 decks
19%synergy
Moon-Blessed Cleric
23%inclusion139 decks602 decks
18%synergy
Archon of Sun's Grace
22%inclusion131 decks602 decks
17%synergy
Sage of Mysteries
19%inclusion113 decks602 decks
18%synergy
Abdel Adrian, Gorion's Ward
19%inclusion112 decks602 decks
17%synergy
Aminatou, Veil Piercer
17%inclusion104 decks602 decks
16%synergy
Overlord of the Mistmoors
16%inclusion98 decks602 decks
14%synergy
Eiganjo Dynastorian
16%inclusion30 decks192 decks
14%synergy
Hedron Crab
15%inclusion90 decks602 decks
14%synergy
Lotho, Corrupt Shirriff
14%inclusion87 decks602 decks
-3%synergy
Alseid of Life's Bounty
14%inclusion87 decks602 decks
13%synergy
Mindwrack Harpy
14%inclusion85 decks602 decks
14%synergy
Athreos, Shroud-Veiled
14%inclusion83 decks602 decks
10%synergy
Archetype of Imagination
13%inclusion76 decks602 decks
8%synergy
Balemurk Leech
12%inclusion73 decks602 decks
12%synergy
Ancient Cellarspawn
12%inclusion72 decks602 decks
9%synergy
Esper Sentinel
12%inclusion70 decks602 decks
-15%synergy
Witch Enchanter
11%inclusion67 decks602 decks
4%synergy
Hullbreaker Horror
11%inclusion65 decks602 decks
5%synergy
Skullsnap Nuisance
10%inclusion60 decks602 decks
10%synergy
Ledger Shredder
10%inclusion58 decks602 decks
1%synergy
Gremlin Tamer
9.5%inclusion57 decks602 decks
9%synergy
Spirited Companion
9.5%inclusion57 decks602 decks
8%synergy
Nashi, Searcher in the Dark
9.0%inclusion54 decks602 decks
8%synergy
Sun Titan
9.0%inclusion54 decks602 decks
1%synergy
Summon: Yojimbo
8.2%inclusion40 decks487 decks
7%synergy
Grand Abolisher
7.8%inclusion47 decks602 decks
-7%synergy
Stenn, Paranoid Partisan
7.5%inclusion45 decks602 decks
6%synergy
Lurrus of the Dream-Den
7.3%inclusion44 decks602 decks
6%synergy
Laboratory Maniac
7.1%inclusion43 decks602 decks
4%synergy
Solemn Simulacrum
7.0%inclusion42 decks602 decks
-6%synergy
Auramancer
7.0%inclusion42 decks602 decks
4%synergy
Valley Floodcaller
6.8%inclusion41 decks602 decks
3%synergy
Nightmare Shepherd
6.8%inclusion41 decks602 decks
4%synergy
Summon: Bahamut
6.7%inclusion33 decks490 decks
5%synergy
Emet-Selch of the Third Seat
6.3%inclusion31 decks490 decks
-3%synergy
Fear of Infinity
6.3%inclusion38 decks602 decks
6%synergy
Stitcher's Supplier
6.3%inclusion38 decks602 decks
6%synergy
Starnheim Courser
6.1%inclusion37 decks602 decks
3%synergy
Instants
Counterspell
37%inclusion220 decks602 decks
-5%synergy
Arcane Denial
32%inclusion191 decks602 decks
12%synergy
Entomb
30%inclusion178 decks602 decks
23%synergy
An Offer You Can't Refuse
28%inclusion168 decks602 decks
0%synergy
Path to Exile
27%inclusion163 decks602 decks
-15%synergy
Dark Ritual
25%inclusion148 decks602 decks
4%synergy
Void Rend
18%inclusion110 decks602 decks
-17%synergy
Swan Song
17%inclusion105 decks602 decks
-3%synergy
Dovin's Veto
16%inclusion98 decks602 decks
-10%synergy
Inkshield
16%inclusion98 decks602 decks
6%synergy
Frantic Search
16%inclusion95 decks602 decks
-3%synergy
Sink into Stupor
15%inclusion92 decks602 decks
2%synergy
Thirst for Meaning
15%inclusion91 decks602 decks
14%synergy
Mana Drain
13%inclusion79 decks602 decks
-4%synergy
Otherworldly Gaze
13%inclusion77 decks602 decks
11%synergy
Negate
12%inclusion75 decks602 decks
-4%synergy
Fell the Profane
12%inclusion72 decks602 decks
3%synergy
Brainstorm
10%inclusion63 decks602 decks
-6%synergy
Anguished Unmaking
10%inclusion60 decks602 decks
-16%synergy
Fact or Fiction
7.5%inclusion45 decks602 decks
4%synergy
Waterlogged Teachings
6.3%inclusion38 decks602 decks
2%synergy
Utter End
6.0%inclusion36 decks602 decks
-0%synergy
Cabal Ritual
5.3%inclusion32 decks602 decks
2%synergy
Generous Gift
5.1%inclusion31 decks602 decks
-9%synergy
Sorceries
Sevinne's Reclamation
43%inclusion261 decks602 decks
35%synergy
Redress Fate
35%inclusion208 decks602 decks
29%synergy
Windfall
25%inclusion148 decks602 decks
12%synergy
Reanimate
21%inclusion128 decks602 decks
5%synergy
Singularity Rupture
20%inclusion87 decks444 decks
17%synergy
Extinguish All Hope
19%inclusion114 decks602 decks
17%synergy
Dance of the Manse
18%inclusion106 decks602 decks
14%synergy
Idyllic Tutor
15%inclusion91 decks602 decks
11%synergy
Glimpse the Unthinkable
15%inclusion90 decks602 decks
14%synergy
Toxic Deluge
14%inclusion86 decks602 decks
-5%synergy
Time Wipe
13%inclusion78 decks602 decks
7%synergy
Damn
13%inclusion76 decks602 decks
-8%synergy
Supreme Verdict
12%inclusion72 decks602 decks
-3%synergy
Resurgent Belief
12%inclusion71 decks602 decks
10%synergy
Space-Time Anomaly
10%inclusion46 decks439 decks
9%synergy
Replenish
10%inclusion59 decks602 decks
8%synergy
Buried Alive
9.5%inclusion57 decks602 decks
5%synergy
Demonic Counsel
8.6%inclusion52 decks602 decks
8%synergy
Ponder
7.3%inclusion44 decks602 decks
-2%synergy
Unmarked Grave
7.3%inclusion44 decks602 decks
6%synergy
Lively Dirge
6.6%inclusion40 decks602 decks
5%synergy
Austere Command
6.0%inclusion36 decks602 decks
-2%synergy
Utility Artifacts
Mesmeric Orb
20%inclusion118 decks602 decks
18%synergy
Cloud Key
13%inclusion77 decks602 decks
10%synergy
Lightning Greaves
7.3%inclusion44 decks602 decks
-16%synergy
Wayfarer's Bauble
6.8%inclusion41 decks602 decks
-0%synergy
Swiftfoot Boots
5.6%inclusion34 decks602 decks
-18%synergy
Perpetual Timepiece
5.1%inclusion31 decks602 decks
5%synergy
Enchantments
Amphibian Downpour
47%inclusion284 decks602 decks
43%synergy
Propaganda
46%inclusion274 decks602 decks
16%synergy
Grasp of Fate
42%inclusion254 decks602 decks
36%synergy
Seal of Cleansing
42%inclusion250 decks602 decks
40%synergy
Sigil of the Empty Throne
41%inclusion246 decks602 decks
35%synergy
Ghostly Prison
40%inclusion240 decks602 decks
17%synergy
Cemetery Tampering
38%inclusion230 decks602 decks
37%synergy
Estrid's Invocation
36%inclusion216 decks602 decks
31%synergy
Starfield of Nyx
36%inclusion216 decks602 decks
32%synergy
Blind Obedience
34%inclusion202 decks602 decks
22%synergy
Cacophony Unleashed
32%inclusion190 decks602 decks
30%synergy
Monologue Tax
31%inclusion186 decks602 decks
24%synergy
Dance of the Dead
29%inclusion172 decks602 decks
26%synergy
The Tale of Tamiyo
24%inclusion147 decks602 decks
24%synergy
Darksteel Mutation
24%inclusion143 decks602 decks
18%synergy
Seal of Removal
23%inclusion141 decks602 decks
23%synergy
Stillness in Motion
23%inclusion124 decks543 decks
22%synergy
Greater Auramancy
22%inclusion133 decks602 decks
18%synergy
The Meathook Massacre
22%inclusion130 decks602 decks
18%synergy
Phyrexian Arena
22%inclusion130 decks602 decks
8%synergy
Imprisoned in the Moon
21%inclusion129 decks602 decks
15%synergy
Timely Ward
21%inclusion127 decks602 decks
16%synergy
All That Glitters
21%inclusion127 decks602 decks
13%synergy
Shark Typhoon
21%inclusion126 decks602 decks
15%synergy
Black Market Connections
20%inclusion121 decks602 decks
5%synergy
Defiled Crypt // Cadaver Lab
20%inclusion121 decks602 decks
19%synergy
Polluted Cistern // Dim Oubliette
20%inclusion120 decks602 decks
19%synergy
Extravagant Replication
20%inclusion119 decks602 decks
15%synergy
Sheltered by Ghosts
20%inclusion118 decks602 decks
17%synergy
Copy Enchantment
19%inclusion117 decks602 decks
15%synergy
Ethereal Armor
19%inclusion117 decks602 decks
15%synergy
Out of the Tombs
18%inclusion111 decks602 decks
18%synergy
Authority of the Consuls
17%inclusion104 decks602 decks
4%synergy
Hallowed Haunting
17%inclusion104 decks602 decks
15%synergy
Leyline of Anticipation
17%inclusion104 decks602 decks
13%synergy
The Eldest Reborn
16%inclusion95 decks602 decks
13%synergy
Touch the Spirit Realm
16%inclusion94 decks602 decks
13%synergy
Bottomless Pool // Locker Room
15%inclusion89 decks602 decks
13%synergy
Mirror Room // Fractured Realm
15%inclusion89 decks602 decks
13%synergy
Static Prison
15%inclusion88 decks602 decks
14%synergy
Court of Cunning
14%inclusion87 decks602 decks
13%synergy
Restricted Office // Lecture Hall
14%inclusion87 decks602 decks
12%synergy
Land Tax
14%inclusion86 decks602 decks
8%synergy
Teval's Judgment
14%inclusion78 decks549 decks
13%synergy
One with the Multiverse
14%inclusion83 decks602 decks
9%synergy
Secrets of the Dead
14%inclusion83 decks602 decks
13%synergy
Nowhere to Run
13%inclusion81 decks602 decks
12%synergy
Central Elevator // Promising Stairs
13%inclusion78 decks602 decks
12%synergy
Oubliette
13%inclusion76 decks602 decks
11%synergy
Cramped Vents // Access Maze
12%inclusion73 decks602 decks
10%synergy
Battles
Invasion of Theros
6.5%inclusion39 decks602 decks
5%synergy
Utility Lands
Bojuka Bog
45%inclusion272 decks602 decks
18%synergy
Otawara, Soaring City
17%inclusion101 decks602 decks
-2%synergy
Cephalid Coliseum
17%inclusion101 decks602 decks
13%synergy
Takenuma, Abandoned Mire
15%inclusion93 decks602 decks
9%synergy
Reliquary Tower
13%inclusion81 decks602 decks
-21%synergy
Halimar Depths
11%inclusion64 decks602 decks
6%synergy
Urborg, Tomb of Yawgmoth
7.3%inclusion44 decks602 decks
-6%synergy
Urza's Saga
6.8%inclusion41 decks602 decks
-5%synergy
Adagia, Windswept Bastion
6.8%inclusion30 decks444 decks
4%synergy
Mana Artifacts
Sol Ring
88%inclusion530 decks602 decks
-2%synergy
Arcane Signet
87%inclusion521 decks602 decks
-1%synergy
Talisman of Progress
52%inclusion312 decks602 decks
7%synergy
Talisman of Dominance
51%inclusion310 decks602 decks
1%synergy
Talisman of Hierarchy
47%inclusion283 decks602 decks
2%synergy
Azorius Signet
40%inclusion240 decks602 decks
10%synergy
Orzhov Signet
38%inclusion229 decks602 decks
7%synergy
Fellwar Stone
32%inclusion192 decks602 decks
-1%synergy
Dimir Signet
28%inclusion168 decks602 decks
-2%synergy
Mind Stone
14%inclusion84 decks602 decks
2%synergy
Commander's Sphere
12%inclusion71 decks602 decks
-5%synergy
Chromatic Lantern
5.3%inclusion32 decks602 decks
-7%synergy
Lands
Swamp
97%inclusion582 decks602 decks
5%synergy
Island
97%inclusion581 decks602 decks
3%synergy
Command Tower
95%inclusion574 decks602 decks
3%synergy
Plains
95%inclusion572 decks602 decks
3%synergy
Caves of Koilos
62%inclusion371 decks602 decks
26%synergy
Arcane Sanctum
60%inclusion359 decks602 decks
6%synergy
Adarkar Wastes
58%inclusion351 decks602 decks
26%synergy
Godless Shrine
56%inclusion338 decks602 decks
4%synergy
Watery Grave
56%inclusion336 decks602 decks
5%synergy
Hallowed Fountain
55%inclusion332 decks602 decks
4%synergy
Underground River
54%inclusion323 decks602 decks
19%synergy
Exotic Orchard
51%inclusion310 decks602 decks
-7%synergy
Flooded Strand
45%inclusion271 decks602 decks
6%synergy
Polluted Delta
45%inclusion270 decks602 decks
7%synergy
Raffine's Tower
44%inclusion262 decks602 decks
3%synergy
Glacial Fortress
40%inclusion240 decks602 decks
-3%synergy
Isolated Chapel
40%inclusion240 decks602 decks
-2%synergy
Marsh Flats
39%inclusion233 decks602 decks
3%synergy
Drowned Catacomb
35%inclusion212 decks602 decks
-3%synergy
Sea of Clouds
34%inclusion205 decks602 decks
-1%synergy
Meticulous Archive
34%inclusion205 decks602 decks
20%synergy
Prairie Stream
33%inclusion201 decks602 decks
-7%synergy
Undercity Sewers
33%inclusion198 decks602 decks
18%synergy
Sunken Hollow
33%inclusion197 decks602 decks
-7%synergy
Shadowy Backstreet
32%inclusion192 decks602 decks
19%synergy
Vault of Champions
32%inclusion192 decks602 decks
-0%synergy
Valgavoth's Lair
31%inclusion187 decks602 decks
29%synergy
Morphic Pool
30%inclusion180 decks602 decks
-4%synergy
Floodfarm Verge
26%inclusion159 decks602 decks
15%synergy
Azorius Chancery
26%inclusion155 decks602 decks
13%synergy
Temple of Enlightenment
25%inclusion152 decks602 decks
10%synergy
Temple of Silence
25%inclusion151 decks602 decks
7%synergy
Terramorphic Expanse
24%inclusion147 decks602 decks
9%synergy
Evolving Wilds
24%inclusion145 decks602 decks
-0%synergy
Temple of Deceit
23%inclusion141 decks602 decks
7%synergy
Obscura Storefront
23%inclusion141 decks602 decks
14%synergy
Tainted Field
23%inclusion140 decks602 decks
16%synergy
Deserted Beach
23%inclusion139 decks602 decks
2%synergy
Orzhov Basilica
23%inclusion137 decks602 decks
8%synergy
Shipwreck Marsh
22%inclusion131 decks602 decks
1%synergy
Gloomlake Verge
22%inclusion131 decks602 decks
11%synergy
Dimir Aqueduct
22%inclusion130 decks602 decks
9%synergy
Tainted Isle
21%inclusion126 decks602 decks
15%synergy
Contaminated Landscape
20%inclusion119 decks602 decks
6%synergy
Shattered Sanctum
17%inclusion100 decks602 decks
-1%synergy
Ash Barrens
16%inclusion98 decks602 decks
6%synergy
Sink into Stupor
15%inclusion92 decks602 decks
2%synergy
Path of Ancestry
15%inclusion89 decks602 decks
-13%synergy
Fetid Heath
13%inclusion78 decks602 decks
-1%synergy
Fabled Passage
13%inclusion77 decks602 decks
5%synergy
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