The Master of Keys (Commander) - Expensive Midrange

The Master of Keys
Rank #302
10decks
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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 Lands
Mana Artifacts
Lands
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Exhibition Tidecaller
50%inclusion1 decks2 decks
49%synergy
High Synergy Cards
Dress Down
100%inclusion10 decks10 decks
98%synergy
Necromancy
100%inclusion10 decks10 decks
96%synergy
Tainted Pact
100%inclusion10 decks10 decks
93%synergy
Force of Negation
100%inclusion10 decks10 decks
88%synergy
Mental Misstep
90%inclusion9 decks10 decks
84%synergy
Mindbreak Trap
90%inclusion9 decks10 decks
83%synergy
Entomb
90%inclusion9 decks10 decks
83%synergy
Demonic Consultation
90%inclusion9 decks10 decks
82%synergy
Animate Dead
90%inclusion9 decks10 decks
80%synergy
Silence
90%inclusion9 decks10 decks
80%synergy
Top Cards
Dark Ritual
100%inclusion10 decks10 decks
80%synergy
Esper Sentinel
100%inclusion10 decks10 decks
73%synergy
Mystic Remora
100%inclusion10 decks10 decks
80%synergy
Lotho, Corrupt Shirriff
90%inclusion9 decks10 decks
73%synergy
Rhystic Study
90%inclusion9 decks10 decks
59%synergy
Swan Song
90%inclusion9 decks10 decks
70%synergy
Grand Abolisher
90%inclusion9 decks10 decks
76%synergy
Dance of the Dead
80%inclusion8 decks10 decks
78%synergy
Imperial Seal
80%inclusion8 decks10 decks
73%synergy
Valley Floodcaller
80%inclusion8 decks10 decks
76%synergy
Game Changers
Smothering Tithe
100%inclusion10 decks10 decks
70%synergy
Thassa's Oracle
100%inclusion10 decks10 decks
91%synergy
Ancient Tomb
100%inclusion10 decks10 decks
88%synergy
Intuition
100%inclusion10 decks10 decks
98%synergy
Mana Vault
100%inclusion10 decks10 decks
91%synergy
Demonic Tutor
100%inclusion10 decks10 decks
80%synergy
Force of Will
100%inclusion10 decks10 decks
88%synergy
Enlightened Tutor
100%inclusion10 decks10 decks
81%synergy
Chrome Mox
100%inclusion10 decks10 decks
91%synergy
Vampiric Tutor
100%inclusion10 decks10 decks
83%synergy
Creatures
Abdel Adrian, Gorion's Ward
80%inclusion8 decks10 decks
78%synergy
Orcish Bowmasters
80%inclusion8 decks10 decks
70%synergy
Ranger-Captain of Eos
70%inclusion7 decks10 decks
64%synergy
Mockingbird
60%inclusion6 decks10 decks
56%synergy
Hullbreaker Horror
60%inclusion6 decks10 decks
54%synergy
Displacer Kitten
50%inclusion5 decks10 decks
43%synergy
Opposition Agent
50%inclusion5 decks10 decks
42%synergy
Gran-Gran
50%inclusion1 decks2 decks
50%synergy
Wan Shi Tong, Librarian
50%inclusion1 decks2 decks
45%synergy
Archivist of Oghma
40%inclusion4 decks10 decks
34%synergy
Phyrexian Metamorph
40%inclusion4 decks10 decks
32%synergy
Lurrus of the Dream-Den
40%inclusion4 decks10 decks
39%synergy
Faerie Mastermind
40%inclusion4 decks10 decks
30%synergy
Voice of Victory
40%inclusion2 decks5 decks
32%synergy
Auriok Salvagers
40%inclusion4 decks10 decks
40%synergy
Ledger Shredder
40%inclusion4 decks10 decks
31%synergy
Tataru Taru
40%inclusion2 decks5 decks
31%synergy
Drannith Magistrate
30%inclusion3 decks10 decks
22%synergy
Ghostly Pilferer
30%inclusion3 decks10 decks
23%synergy
Volatile Stormdrake
20%inclusion2 decks10 decks
19%synergy
High Fae Trickster
20%inclusion2 decks10 decks
16%synergy
Snapcaster Mage
20%inclusion2 decks10 decks
18%synergy
Hedron Crab
20%inclusion2 decks10 decks
19%synergy
Scrabbling Skullcrab
10%inclusion1 decks10 decks
9%synergy
Hoarding Broodlord
10%inclusion1 decks10 decks
8%synergy
Bruvac the Grandiloquent
10%inclusion1 decks10 decks
9%synergy
Starfield Mystic
10%inclusion1 decks10 decks
4%synergy
Tishana's Tidebinder
10%inclusion1 decks10 decks
9%synergy
Gravebreaker Lamia
10%inclusion1 decks10 decks
9%synergy
Consecrated Sphinx
10%inclusion1 decks10 decks
4%synergy
Subtlety
10%inclusion1 decks10 decks
10%synergy
Spellseeker
10%inclusion1 decks10 decks
9%synergy
Malevolent Hermit
10%inclusion1 decks10 decks
9%synergy
Drana and Linvala
10%inclusion1 decks10 decks
8%synergy
Gilded Drake
10%inclusion1 decks10 decks
8%synergy
Mesa Enchantress
10%inclusion1 decks10 decks
1%synergy
Talion, the Kindly Lord
10%inclusion1 decks10 decks
3%synergy
Fear of Sleep Paralysis
10%inclusion1 decks10 decks
5%synergy
Doomwake Giant
10%inclusion1 decks10 decks
4%synergy
Nezahal, Primal Tide
10%inclusion1 decks10 decks
6%synergy
Entity Tracker
10%inclusion1 decks10 decks
4%synergy
Ondu Spiritdancer
10%inclusion1 decks10 decks
4%synergy
Clever Impersonator
10%inclusion1 decks10 decks
8%synergy
Spellskite
10%inclusion1 decks10 decks
7%synergy
Psychic Frog
10%inclusion1 decks10 decks
3%synergy
Academy Rector
10%inclusion1 decks10 decks
9%synergy
Dauthi Voidwalker
10%inclusion1 decks10 decks
4%synergy
Instants
Flusterstorm
80%inclusion8 decks10 decks
72%synergy
Pact of Negation
80%inclusion8 decks10 decks
73%synergy
Borne Upon a Wind
60%inclusion6 decks10 decks
55%synergy
Fierce Guardianship
60%inclusion6 decks10 decks
40%synergy
An Offer You Can't Refuse
50%inclusion5 decks10 decks
22%synergy
Retraction Helix
50%inclusion5 decks10 decks
49%synergy
Cabal Ritual
50%inclusion5 decks10 decks
47%synergy
Swords to Plowshares
50%inclusion5 decks10 decks
-18%synergy
Cyclonic Rift
50%inclusion5 decks10 decks
27%synergy
Brain Freeze
40%inclusion4 decks10 decks
39%synergy
Banishing Knack
40%inclusion4 decks10 decks
40%synergy
Mystical Tutor
40%inclusion4 decks10 decks
29%synergy
Chain of Vapor
30%inclusion3 decks10 decks
27%synergy
Gifts Ungiven
30%inclusion3 decks10 decks
27%synergy
Darkblast
30%inclusion3 decks10 decks
30%synergy
Ad Nauseam
30%inclusion3 decks10 decks
28%synergy
Culling the Weak
20%inclusion2 decks10 decks
18%synergy
Dispel
20%inclusion2 decks10 decks
17%synergy
Mana Drain
20%inclusion2 decks10 decks
3%synergy
Into the Flood Maw
20%inclusion2 decks10 decks
16%synergy
Sink into Stupor
20%inclusion2 decks10 decks
7%synergy
Deadly Rollick
10%inclusion1 decks10 decks
-6%synergy
Sacrifice
10%inclusion1 decks10 decks
9%synergy
Ephemerate
10%inclusion1 decks10 decks
6%synergy
Orim's Chant
10%inclusion1 decks10 decks
8%synergy
Flare of Denial
10%inclusion1 decks10 decks
8%synergy
Strix Serenade
10%inclusion1 decks10 decks
7%synergy
Commandeer
10%inclusion1 decks10 decks
9%synergy
Misdirection
10%inclusion1 decks10 decks
8%synergy
Path to Exile
10%inclusion1 decks10 decks
-32%synergy
Miscast
10%inclusion1 decks10 decks
9%synergy
Snapback
10%inclusion1 decks10 decks
10%synergy
Saw in Half
10%inclusion1 decks10 decks
8%synergy
Sorceries
Sevinne's Reclamation
60%inclusion6 decks10 decks
51%synergy
Reanimate
60%inclusion6 decks10 decks
44%synergy
Flash Photography
50%inclusion1 decks2 decks
49%synergy
Yawgmoth's Will
40%inclusion4 decks10 decks
39%synergy
Windfall
30%inclusion3 decks10 decks
17%synergy
Lively Dirge
30%inclusion3 decks10 decks
29%synergy
Mnemonic Betrayal
30%inclusion3 decks10 decks
27%synergy
Timetwister
30%inclusion3 decks10 decks
29%synergy
Singularity Rupture
25%inclusion1 decks4 decks
23%synergy
Unmarked Grave
20%inclusion2 decks10 decks
19%synergy
Demonic Counsel
20%inclusion2 decks10 decks
19%synergy
Toxic Deluge
20%inclusion2 decks10 decks
0%synergy
Beseech the Mirror
20%inclusion2 decks10 decks
16%synergy
Diabolic Intent
10%inclusion1 decks10 decks
5%synergy
Gitaxian Probe
10%inclusion1 decks10 decks
8%synergy
Idyllic Tutor
10%inclusion1 decks10 decks
6%synergy
Praetor's Grasp
10%inclusion1 decks10 decks
7%synergy
Dark Deal
10%inclusion1 decks10 decks
9%synergy
Maddening Cacophony
10%inclusion1 decks10 decks
9%synergy
Utility Artifacts
The One Ring
70%inclusion7 decks10 decks
57%synergy
Wishclaw Talisman
50%inclusion5 decks10 decks
42%synergy
Vexing Bauble
30%inclusion3 decks10 decks
28%synergy
Agatha's Soul Cauldron
10%inclusion1 decks10 decks
10%synergy
Swiftfoot Boots
10%inclusion1 decks10 decks
-14%synergy
Imposter Mech
10%inclusion1 decks10 decks
8%synergy
Enchantments
Tinybones Joins Up
70%inclusion7 decks10 decks
69%synergy
Amphibian Downpour
70%inclusion7 decks10 decks
65%synergy
Copy Artifact
60%inclusion6 decks10 decks
59%synergy
Chains of Mephistopheles
60%inclusion6 decks10 decks
60%synergy
Blind Obedience
50%inclusion5 decks10 decks
38%synergy
Mirrormade
50%inclusion5 decks10 decks
40%synergy
The Meathook Massacre
40%inclusion4 decks10 decks
37%synergy
Touch the Spirit Realm
40%inclusion4 decks10 decks
38%synergy
Steal Enchantment
40%inclusion4 decks10 decks
39%synergy
Necropotence
40%inclusion4 decks10 decks
34%synergy
Static Prison
40%inclusion4 decks10 decks
40%synergy
Counterbalance
30%inclusion3 decks10 decks
28%synergy
Founding the Third Path
30%inclusion3 decks10 decks
30%synergy
Seal of Cleansing
30%inclusion3 decks10 decks
29%synergy
Teval's Judgment
20%inclusion1 decks5 decks
19%synergy
Copy Enchantment
20%inclusion2 decks10 decks
15%synergy
Monologue Tax
20%inclusion2 decks10 decks
13%synergy
Trouble in Pairs
20%inclusion2 decks10 decks
15%synergy
Waste Not
10%inclusion1 decks10 decks
10%synergy
Ripples of Undeath
10%inclusion1 decks10 decks
7%synergy
Curse of Silence
10%inclusion1 decks10 decks
10%synergy
Attunement
10%inclusion1 decks10 decks
10%synergy
Dance of Many
10%inclusion1 decks10 decks
10%synergy
Omniscience
10%inclusion1 decks10 decks
6%synergy
Kismet
10%inclusion1 decks10 decks
10%synergy
Charitable Levy
10%inclusion1 decks10 decks
10%synergy
Starfield of Nyx
10%inclusion1 decks10 decks
6%synergy
Sphere of Safety
10%inclusion1 decks10 decks
1%synergy
Power Artifact
10%inclusion1 decks10 decks
10%synergy
Leyline of Anticipation
10%inclusion1 decks10 decks
6%synergy
Spreading Seas
10%inclusion1 decks10 decks
10%synergy
Mind Harness
10%inclusion1 decks10 decks
10%synergy
Secret Arcade // Dusty Parlor
10%inclusion1 decks10 decks
6%synergy
Black Market Connections
10%inclusion1 decks10 decks
-5%synergy
Seal of Removal
10%inclusion1 decks10 decks
9%synergy
Leyline of the Void
10%inclusion1 decks10 decks
9%synergy
Planeswalkers
Teferi, Time Raveler
40%inclusion4 decks10 decks
32%synergy
Tezzeret, Cruel Captain
25%inclusion1 decks4 decks
23%synergy
Utility Lands
Otawara, Soaring City
90%inclusion9 decks10 decks
71%synergy
Urza's Saga
40%inclusion4 decks10 decks
28%synergy
City of Traitors
40%inclusion4 decks10 decks
39%synergy
Serra's Sanctum
30%inclusion3 decks10 decks
28%synergy
Cephalid Coliseum
30%inclusion3 decks10 decks
26%synergy
Emergence Zone
20%inclusion2 decks10 decks
18%synergy
Wasteland
10%inclusion1 decks10 decks
9%synergy
Minamo, School at Water's Edge
10%inclusion1 decks10 decks
6%synergy
Phyrexian Tower
10%inclusion1 decks10 decks
6%synergy
Hall of Heliod's Generosity
10%inclusion1 decks10 decks
-3%synergy
Treasure Vault
10%inclusion1 decks10 decks
9%synergy
Cabal Coffers
10%inclusion1 decks10 decks
7%synergy
Strip Mine
10%inclusion1 decks10 decks
8%synergy
Urborg, Tomb of Yawgmoth
10%inclusion1 decks10 decks
-3%synergy
Saprazzan Skerry
10%inclusion1 decks10 decks
10%synergy
Mana Artifacts
Arcane Signet
100%inclusion10 decks10 decks
12%synergy
Sol Ring
100%inclusion10 decks10 decks
10%synergy
Mox Diamond
100%inclusion10 decks10 decks
93%synergy
Lotus Petal
90%inclusion9 decks10 decks
80%synergy
Grim Monolith
70%inclusion7 decks10 decks
67%synergy
Mox Opal
70%inclusion7 decks10 decks
62%synergy
Lion's Eye Diamond
70%inclusion7 decks10 decks
68%synergy
Fellwar Stone
60%inclusion6 decks10 decks
27%synergy
Talisman of Progress
50%inclusion5 decks10 decks
6%synergy
Talisman of Dominance
40%inclusion4 decks10 decks
-10%synergy
Mox Amber
30%inclusion3 decks10 decks
24%synergy
Relic of Legends
10%inclusion1 decks10 decks
3%synergy
Talisman of Hierarchy
10%inclusion1 decks10 decks
-35%synergy
Springleaf Drum
10%inclusion1 decks10 decks
8%synergy
Lands
Tundra
100%inclusion10 decks10 decks
84%synergy
Command Tower
100%inclusion10 decks10 decks
7%synergy
Underground Sea
100%inclusion10 decks10 decks
84%synergy
Godless Shrine
100%inclusion10 decks10 decks
48%synergy
Gemstone Caverns
100%inclusion10 decks10 decks
93%synergy
Scrubland
100%inclusion10 decks10 decks
84%synergy
Mana Confluence
100%inclusion10 decks10 decks
86%synergy
Marsh Flats
100%inclusion10 decks10 decks
64%synergy
Polluted Delta
100%inclusion10 decks10 decks
62%synergy
City of Brass
100%inclusion10 decks10 decks
85%synergy
Flooded Strand
100%inclusion10 decks10 decks
61%synergy
Watery Grave
100%inclusion10 decks10 decks
49%synergy
Hallowed Fountain
90%inclusion9 decks10 decks
39%synergy
Bloodstained Mire
90%inclusion9 decks10 decks
79%synergy
Misty Rainforest
80%inclusion8 decks10 decks
69%synergy
Scalding Tarn
80%inclusion8 decks10 decks
69%synergy
Windswept Heath
70%inclusion7 decks10 decks
61%synergy
Verdant Catacombs
70%inclusion7 decks10 decks
60%synergy
Morphic Pool
70%inclusion7 decks10 decks
36%synergy
Undercity Sewers
60%inclusion6 decks10 decks
45%synergy
Arid Mesa
60%inclusion6 decks10 decks
51%synergy
Exotic Orchard
50%inclusion5 decks10 decks
-9%synergy
Vault of Champions
40%inclusion4 decks10 decks
8%synergy
Starting Town
40%inclusion2 decks5 decks
36%synergy
Tarnished Citadel
30%inclusion3 decks10 decks
29%synergy
Sea of Clouds
30%inclusion3 decks10 decks
-5%synergy
Meticulous Archive
30%inclusion3 decks10 decks
16%synergy
Shadowy Backstreet
20%inclusion2 decks10 decks
7%synergy
Swamp
20%inclusion2 decks10 decks
-72%synergy
Cavern of Souls
20%inclusion2 decks10 decks
13%synergy
Sink into Stupor
20%inclusion2 decks10 decks
7%synergy
Gemstone Mine
10%inclusion1 decks10 decks
10%synergy
Valgavoth's Lair
10%inclusion1 decks10 decks
7%synergy
Raffine's Tower
10%inclusion1 decks10 decks
-31%synergy
Island
10%inclusion1 decks10 decks
-83%synergy
Plains
10%inclusion1 decks10 decks
-82%synergy
Gloomlake Verge
10%inclusion1 decks10 decks
-1%synergy
Floodfarm Verge
10%inclusion1 decks10 decks
-1%synergy
Silent Clearing
10%inclusion1 decks10 decks
8%synergy
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