The Master of Keys (Commander) - Expensive Core Control

The Master of Keys
Rank #305
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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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Thassa's Oracle
100%inclusion1 decks1 decks
91%synergy
Creatures
Phenax, God of Deception
100%inclusion1 decks1 decks
100%synergy
The Mindskinner
100%inclusion1 decks1 decks
99%synergy
Overlord of the Floodpits
100%inclusion1 decks1 decks
96%synergy
Fear of Failed Tests
100%inclusion1 decks1 decks
100%synergy
Ertai, the Corrupted
100%inclusion1 decks1 decks
100%synergy
Inquisitive Glimmer
100%inclusion1 decks1 decks
93%synergy
Fear of Surveillance
100%inclusion1 decks1 decks
100%synergy
Demon of Fate's Design
100%inclusion1 decks1 decks
95%synergy
Fear of Impostors
100%inclusion1 decks1 decks
99%synergy
Overlord of the Balemurk
100%inclusion1 decks1 decks
98%synergy
Hedron Crab
100%inclusion1 decks1 decks
99%synergy
Boggart Trawler
100%inclusion1 decks1 decks
97%synergy
Fear of the Dark
100%inclusion1 decks1 decks
100%synergy
Enduring Curiosity
100%inclusion1 decks1 decks
92%synergy
Appendage Amalgam
100%inclusion1 decks1 decks
100%synergy
Fear of Sleep Paralysis
100%inclusion1 decks1 decks
95%synergy
Ancient Cellarspawn
100%inclusion1 decks1 decks
97%synergy
Aegis of the Gods
100%inclusion1 decks1 decks
99%synergy
Faith Healer
100%inclusion1 decks1 decks
100%synergy
Entity Tracker
100%inclusion1 decks1 decks
94%synergy
Valgavoth, Terror Eater
100%inclusion1 decks1 decks
97%synergy
Rona, Herald of Invasion
100%inclusion1 decks1 decks
96%synergy
Zur, Eternal Schemer
100%inclusion1 decks1 decks
97%synergy
Likeness Looter
100%inclusion1 decks1 decks
93%synergy
Phantatog
100%inclusion1 decks1 decks
100%synergy
Auratog
100%inclusion1 decks1 decks
100%synergy
Instants
Fell the Profane
100%inclusion1 decks1 decks
91%synergy
Sejiri Shelter
100%inclusion1 decks1 decks
98%synergy
Sorceries
Replenish
100%inclusion1 decks1 decks
98%synergy
Utility Artifacts
Claws of Gix
100%inclusion1 decks1 decks
100%synergy
Altar of Dementia
100%inclusion1 decks1 decks
99%synergy
Bident of Thassa
100%inclusion1 decks1 decks
91%synergy
Enchantments
Omen of the Dead
100%inclusion1 decks1 decks
100%synergy
Cacophony Unleashed
100%inclusion1 decks1 decks
98%synergy
Ripples of Undeath
100%inclusion1 decks1 decks
97%synergy
Imprisoned in the Moon
100%inclusion1 decks1 decks
93%synergy
Lost in the Maze
100%inclusion1 decks1 decks
100%synergy
Unable to Scream
100%inclusion1 decks1 decks
99%synergy
Shardmage's Rescue
100%inclusion1 decks1 decks
100%synergy
Arenson's Aura
100%inclusion1 decks1 decks
100%synergy
Out of the Tombs
100%inclusion1 decks1 decks
100%synergy
Leyline of Sanctity
100%inclusion1 decks1 decks
99%synergy
Soul Snare
100%inclusion1 decks1 decks
100%synergy
Case of the Stashed Skeleton
100%inclusion1 decks1 decks
100%synergy
Necromancy
100%inclusion1 decks1 decks
95%synergy
Seal of Doom
100%inclusion1 decks1 decks
100%synergy
Teval's Judgment
100%inclusion1 decks1 decks
99%synergy
Starfield of Nyx
100%inclusion1 decks1 decks
96%synergy
Benevolent Blessing
100%inclusion1 decks1 decks
100%synergy
Leyline of Anticipation
100%inclusion1 decks1 decks
96%synergy
Amphibian Downpour
100%inclusion1 decks1 decks
95%synergy
Seal of Cleansing
100%inclusion1 decks1 decks
99%synergy
Animate Dead
100%inclusion1 decks1 decks
90%synergy
Dress Down
100%inclusion1 decks1 decks
98%synergy
Eaten by Piranhas
100%inclusion1 decks1 decks
99%synergy
Chthonian Nightmare
100%inclusion1 decks1 decks
99%synergy
Fae Flight
100%inclusion1 decks1 decks
100%synergy
Stillness in Motion
100%inclusion1 decks1 decks
100%synergy
Nowhere to Run
100%inclusion1 decks1 decks
99%synergy
Hallowed Haunting
100%inclusion1 decks1 decks
98%synergy
Greater Auramancy
100%inclusion1 decks1 decks
96%synergy
Seal of Removal
100%inclusion1 decks1 decks
99%synergy
Tortured Existence
100%inclusion1 decks1 decks
93%synergy
Utility Lands
Hall of Heliod's Generosity
100%inclusion1 decks1 decks
87%synergy
Buried Ruin
100%inclusion1 decks1 decks
97%synergy
War Room
100%inclusion1 decks1 decks
100%synergy
Lands
Glacial Fortress
100%inclusion1 decks1 decks
58%synergy
Fell the Profane
100%inclusion1 decks1 decks
91%synergy
Command Tower
100%inclusion1 decks1 decks
7%synergy
Terramorphic Expanse
100%inclusion1 decks1 decks
84%synergy
Exotic Orchard
100%inclusion1 decks1 decks
41%synergy
Contaminated Landscape
100%inclusion1 decks1 decks
86%synergy
Caves of Koilos
100%inclusion1 decks1 decks
64%synergy
Swamp
100%inclusion1 decks1 decks
8%synergy
Valgavoth's Lair
100%inclusion1 decks1 decks
97%synergy
Sea of Clouds
100%inclusion1 decks1 decks
65%synergy
Boggart Trawler
100%inclusion1 decks1 decks
97%synergy
Godless Shrine
100%inclusion1 decks1 decks
49%synergy
Arcane Sanctum
100%inclusion1 decks1 decks
46%synergy
Isolated Chapel
100%inclusion1 decks1 decks
60%synergy
Drowned Catacomb
100%inclusion1 decks1 decks
63%synergy
Underground River
100%inclusion1 decks1 decks
66%synergy
Evolving Wilds
100%inclusion1 decks1 decks
75%synergy
Island
100%inclusion1 decks1 decks
7%synergy
Plains
100%inclusion1 decks1 decks
8%synergy
Morphic Pool
100%inclusion1 decks1 decks
66%synergy
Sejiri Shelter
100%inclusion1 decks1 decks
98%synergy
Adarkar Wastes
100%inclusion1 decks1 decks
68%synergy
Vault of Champions
100%inclusion1 decks1 decks
67%synergy
Hallowed Fountain
100%inclusion1 decks1 decks
50%synergy
Watery Grave
100%inclusion1 decks1 decks
49%synergy
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