The Master of Keys (Commander) - Expensive Optimized Control

The Master of Keys
Rank #307
2decks
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Background image for What if Thassa's Oracle Were Banned?
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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Creatures
Instants
Sorceries
Utility Artifacts
Enchantments
Planeswalkers
Utility Lands
Mana Artifacts
Lands
Back to Top
Smothering Tithe
100%inclusion2 decks2 decks
68%synergy
Thassa's Oracle
100%inclusion2 decks2 decks
90%synergy
Ancient Tomb
100%inclusion2 decks2 decks
87%synergy
Intuition
100%inclusion2 decks2 decks
98%synergy
Rhystic Study
100%inclusion2 decks2 decks
68%synergy
Mana Vault
100%inclusion2 decks2 decks
91%synergy
Demonic Tutor
100%inclusion2 decks2 decks
79%synergy
Necropotence
100%inclusion2 decks2 decks
93%synergy
Enlightened Tutor
100%inclusion2 decks2 decks
80%synergy
Fierce Guardianship
100%inclusion2 decks2 decks
79%synergy
Creatures
Displacer Kitten
100%inclusion2 decks2 decks
93%synergy
Esper Sentinel
100%inclusion2 decks2 decks
72%synergy
Abdel Adrian, Gorion's Ward
100%inclusion2 decks2 decks
98%synergy
Archivist of Oghma
50%inclusion1 decks2 decks
43%synergy
Corpse Knight
50%inclusion1 decks2 decks
39%synergy
Lotho, Corrupt Shirriff
50%inclusion1 decks2 decks
33%synergy
Hoarding Broodlord
50%inclusion1 decks2 decks
48%synergy
Bruvac the Grandiloquent
50%inclusion1 decks2 decks
49%synergy
Sheoldred, the Apocalypse
50%inclusion1 decks2 decks
41%synergy
Roaming Throne
50%inclusion1 decks2 decks
43%synergy
Lurrus of the Dream-Den
50%inclusion1 decks2 decks
48%synergy
Valley Floodcaller
50%inclusion1 decks2 decks
46%synergy
Inquisitive Glimmer
50%inclusion1 decks2 decks
42%synergy
Demon of Fate's Design
50%inclusion1 decks2 decks
45%synergy
Overlord of the Balemurk
50%inclusion1 decks2 decks
48%synergy
Barrowgoyf
50%inclusion1 decks2 decks
50%synergy
Gilded Drake
50%inclusion1 decks2 decks
48%synergy
Leonin Relic-Warder
50%inclusion1 decks2 decks
50%synergy
Mesa Enchantress
50%inclusion1 decks2 decks
41%synergy
Golgari Thug
50%inclusion1 decks2 decks
50%synergy
Drannith Magistrate
50%inclusion1 decks2 decks
42%synergy
Entity Tracker
50%inclusion1 decks2 decks
44%synergy
Hullbreaker Horror
50%inclusion1 decks2 decks
44%synergy
Stinkweed Imp
50%inclusion1 decks2 decks
50%synergy
Braids, Arisen Nightmare
50%inclusion1 decks2 decks
49%synergy
Ledger Shredder
50%inclusion1 decks2 decks
41%synergy
Orcish Bowmasters
50%inclusion1 decks2 decks
39%synergy
Instants
Entomb
100%inclusion2 decks2 decks
93%synergy
Swords to Plowshares
100%inclusion2 decks2 decks
32%synergy
Path to Exile
100%inclusion2 decks2 decks
58%synergy
Vampiric Tutor
100%inclusion2 decks2 decks
82%synergy
Teferi's Protection
50%inclusion1 decks2 decks
33%synergy
Mental Misstep
50%inclusion1 decks2 decks
43%synergy
Chain of Vapor
50%inclusion1 decks2 decks
47%synergy
An Offer You Can't Refuse
50%inclusion1 decks2 decks
23%synergy
Flare of Denial
50%inclusion1 decks2 decks
48%synergy
Brain Freeze
50%inclusion1 decks2 decks
49%synergy
Dark Ritual
50%inclusion1 decks2 decks
31%synergy
Gifts Ungiven
50%inclusion1 decks2 decks
48%synergy
Cabal Ritual
50%inclusion1 decks2 decks
47%synergy
Flusterstorm
50%inclusion1 decks2 decks
42%synergy
Silence
50%inclusion1 decks2 decks
40%synergy
Force of Will
50%inclusion1 decks2 decks
37%synergy
Demonic Consultation
50%inclusion1 decks2 decks
42%synergy
Force of Negation
50%inclusion1 decks2 decks
38%synergy
Saw in Half
50%inclusion1 decks2 decks
48%synergy
Mystical Tutor
50%inclusion1 decks2 decks
39%synergy
Sorceries
Windfall
50%inclusion1 decks2 decks
36%synergy
Imperial Seal
50%inclusion1 decks2 decks
43%synergy
Sevinne's Reclamation
50%inclusion1 decks2 decks
41%synergy
Cut Your Losses
50%inclusion1 decks2 decks
50%synergy
Idyllic Tutor
50%inclusion1 decks2 decks
46%synergy
Reanimate
50%inclusion1 decks2 decks
34%synergy
Toxic Deluge
50%inclusion1 decks2 decks
30%synergy
Traumatize
50%inclusion1 decks2 decks
50%synergy
Grim Tutor
50%inclusion1 decks2 decks
46%synergy
Utility Artifacts
Mesmeric Orb
100%inclusion2 decks2 decks
99%synergy
The One Ring
50%inclusion1 decks2 decks
36%synergy
Wishclaw Talisman
50%inclusion1 decks2 decks
42%synergy
Altar of the Brood
50%inclusion1 decks2 decks
49%synergy
Enchantments
Necromancy
100%inclusion2 decks2 decks
95%synergy
Mystic Remora
100%inclusion2 decks2 decks
79%synergy
Animate Dead
100%inclusion2 decks2 decks
90%synergy
Treacherous Blessing
50%inclusion1 decks2 decks
50%synergy
Court of Cunning
50%inclusion1 decks2 decks
49%synergy
Tinybones Joins Up
50%inclusion1 decks2 decks
49%synergy
Out of the Tombs
50%inclusion1 decks2 decks
50%synergy
Mind Over Matter
50%inclusion1 decks2 decks
50%synergy
Induced Amnesia
50%inclusion1 decks2 decks
50%synergy
Copy Artifact
50%inclusion1 decks2 decks
49%synergy
Starfield of Nyx
50%inclusion1 decks2 decks
46%synergy
Cemetery Tampering
50%inclusion1 decks2 decks
49%synergy
All That Glitters
50%inclusion1 decks2 decks
41%synergy
Dress Down
50%inclusion1 decks2 decks
48%synergy
Hatching Plans
50%inclusion1 decks2 decks
50%synergy
Black Market Connections
50%inclusion1 decks2 decks
36%synergy
Land Tax
50%inclusion1 decks2 decks
44%synergy
Bloodchief Ascension
50%inclusion1 decks2 decks
45%synergy
Ghostly Prison
50%inclusion1 decks2 decks
28%synergy
Propaganda
50%inclusion1 decks2 decks
23%synergy
Chains of Mephistopheles
50%inclusion1 decks2 decks
50%synergy
Phyrexian Arena
50%inclusion1 decks2 decks
36%synergy
Standstill
50%inclusion1 decks2 decks
50%synergy
Planeswalkers
Teferi, Time Raveler
100%inclusion2 decks2 decks
92%synergy
Aminatou, the Fateshifter
50%inclusion1 decks2 decks
47%synergy
Tezzeret, Cruel Captain
50%inclusion1 decks2 decks
48%synergy
Utility Lands
Tyrite Sanctum
50%inclusion1 decks2 decks
50%synergy
Urza's Saga
50%inclusion1 decks2 decks
38%synergy
Cathedral of War
50%inclusion1 decks2 decks
50%synergy
Cephalid Coliseum
50%inclusion1 decks2 decks
46%synergy
Urborg, Tomb of Yawgmoth
50%inclusion1 decks2 decks
37%synergy
Rogue's Passage
50%inclusion1 decks2 decks
41%synergy
Mana Artifacts
Talisman of Progress
100%inclusion2 decks2 decks
57%synergy
Talisman of Dominance
100%inclusion2 decks2 decks
50%synergy
Sol Ring
100%inclusion2 decks2 decks
10%synergy
Talisman of Hierarchy
100%inclusion2 decks2 decks
56%synergy
Chrome Mox
100%inclusion2 decks2 decks
90%synergy
Arcane Signet
50%inclusion1 decks2 decks
-38%synergy
Grim Monolith
50%inclusion1 decks2 decks
47%synergy
Lotus Petal
50%inclusion1 decks2 decks
39%synergy
Basalt Monolith
50%inclusion1 decks2 decks
48%synergy
Dimir Signet
50%inclusion1 decks2 decks
18%synergy
Fellwar Stone
50%inclusion1 decks2 decks
16%synergy
Springleaf Drum
50%inclusion1 decks2 decks
48%synergy
Mox Opal
50%inclusion1 decks2 decks
41%synergy
Orzhov Signet
50%inclusion1 decks2 decks
16%synergy
Azorius Signet
50%inclusion1 decks2 decks
18%synergy
Mox Diamond
50%inclusion1 decks2 decks
43%synergy
Lands
Tundra
100%inclusion2 decks2 decks
84%synergy
Command Tower
100%inclusion2 decks2 decks
7%synergy
Brightclimb Pathway
100%inclusion2 decks2 decks
93%synergy
Caves of Koilos
100%inclusion2 decks2 decks
65%synergy
Underground Sea
100%inclusion2 decks2 decks
84%synergy
Sea of Clouds
100%inclusion2 decks2 decks
64%synergy
Raffine's Tower
100%inclusion2 decks2 decks
59%synergy
Scrubland
100%inclusion2 decks2 decks
84%synergy
Marsh Flats
100%inclusion2 decks2 decks
64%synergy
Vault of Champions
100%inclusion2 decks2 decks
67%synergy
Hallowed Fountain
100%inclusion2 decks2 decks
50%synergy
Watery Grave
100%inclusion2 decks2 decks
50%synergy
Undercity Sewers
50%inclusion1 decks2 decks
36%synergy
Gemstone Mine
50%inclusion1 decks2 decks
50%synergy
Fabled Passage
50%inclusion1 decks2 decks
43%synergy
Clearwater Pathway
50%inclusion1 decks2 decks
43%synergy
Shadowy Backstreet
50%inclusion1 decks2 decks
37%synergy
Exotic Orchard
50%inclusion1 decks2 decks
-9%synergy
Bleachbone Verge
50%inclusion1 decks2 decks
41%synergy
Hengegate Pathway
50%inclusion1 decks2 decks
44%synergy
Swamp
50%inclusion1 decks2 decks
-41%synergy
Verdant Catacombs
50%inclusion1 decks2 decks
40%synergy
Godless Shrine
50%inclusion1 decks2 decks
-1%synergy
Underground River
50%inclusion1 decks2 decks
17%synergy
Cavern of Souls
50%inclusion1 decks2 decks
43%synergy
Island
50%inclusion1 decks2 decks
-43%synergy
Plains
50%inclusion1 decks2 decks
-42%synergy
Morphic Pool
50%inclusion1 decks2 decks
16%synergy
Gemstone Caverns
50%inclusion1 decks2 decks
42%synergy
Arid Mesa
50%inclusion1 decks2 decks
40%synergy
Meticulous Archive
50%inclusion1 decks2 decks
36%synergy
Mana Confluence
50%inclusion1 decks2 decks
36%synergy
Adarkar Wastes
50%inclusion1 decks2 decks
19%synergy
Gloomlake Verge
50%inclusion1 decks2 decks
39%synergy
Polluted Delta
50%inclusion1 decks2 decks
12%synergy
Floodfarm Verge
50%inclusion1 decks2 decks
39%synergy
City of Brass
50%inclusion1 decks2 decks
35%synergy
Flooded Strand
50%inclusion1 decks2 decks
12%synergy
Bloodstained Mire
50%inclusion1 decks2 decks
39%synergy
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