The Master of Keys (Commander) - Toolbox

The Master of Keys
Rank #303
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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
Planeswalkers
Utility Lands
Mana Artifacts
Lands
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Ripples of Undeath
82%inclusion18 decks22 decks
79%synergy
Gravebreaker Lamia
77%inclusion17 decks22 decks
76%synergy
Animate Dead
73%inclusion16 decks22 decks
63%synergy
Dress Down
64%inclusion14 decks22 decks
61%synergy
Scrabbling Skullcrab
59%inclusion13 decks22 decks
58%synergy
Inquisitive Glimmer
64%inclusion14 decks22 decks
57%synergy
Sevinne's Reclamation
64%inclusion14 decks22 decks
55%synergy
Mystic Remora
73%inclusion16 decks22 decks
52%synergy
Estrid's Invocation
55%inclusion12 decks22 decks
50%synergy
Mirrormade
59%inclusion13 decks22 decks
49%synergy
Top Cards
Propaganda
59%inclusion13 decks22 decks
30%synergy
Grasp of Fate
55%inclusion12 decks22 decks
48%synergy
Entomb
55%inclusion12 decks22 decks
48%synergy
Mesa Enchantress
50%inclusion11 decks22 decks
41%synergy
Cemetery Tampering
50%inclusion11 decks22 decks
49%synergy
Entity Tracker
50%inclusion11 decks22 decks
44%synergy
Blind Obedience
45%inclusion10 decks22 decks
34%synergy
Necromancy
45%inclusion10 decks22 decks
41%synergy
The Tale of Tamiyo
45%inclusion10 decks22 decks
45%synergy
Amphibian Downpour
45%inclusion10 decks22 decks
41%synergy
Game Changers
Smothering Tithe
45%inclusion10 decks22 decks
15%synergy
Rhystic Study
36%inclusion8 decks22 decks
6%synergy
Enlightened Tutor
27%inclusion6 decks22 decks
9%synergy
Demonic Tutor
23%inclusion5 decks22 decks
3%synergy
Gifts Ungiven
14%inclusion3 decks22 decks
11%synergy
Fierce Guardianship
14%inclusion3 decks22 decks
-7%synergy
Thassa's Oracle
9.1%inclusion2 decks22 decks
0%synergy
Mana Vault
9.1%inclusion2 decks22 decks
1%synergy
Force of Will
9.1%inclusion2 decks22 decks
-3%synergy
Creatures
Doomwake Giant
45%inclusion10 decks22 decks
40%synergy
Starfield Mystic
41%inclusion9 decks22 decks
34%synergy
Fear of Impostors
36%inclusion8 decks22 decks
35%synergy
Hedron Crab
36%inclusion8 decks22 decks
36%synergy
Demon of Fate's Design
32%inclusion7 decks22 decks
26%synergy
Fear of Sleep Paralysis
32%inclusion7 decks22 decks
27%synergy
Ondu Spiritdancer
32%inclusion7 decks22 decks
26%synergy
Lotho, Corrupt Shirriff
27%inclusion6 decks22 decks
10%synergy
Overlord of the Floodpits
27%inclusion6 decks22 decks
24%synergy
Esper Sentinel
27%inclusion6 decks22 decks
0%synergy
Sage of Mysteries
27%inclusion6 decks22 decks
27%synergy
Victor, Valgavoth's Seneschal
27%inclusion6 decks22 decks
25%synergy
Zur the Enchanter
27%inclusion6 decks22 decks
22%synergy
Doom Whisperer
23%inclusion5 decks22 decks
21%synergy
Grim Guardian
23%inclusion5 decks22 decks
20%synergy
Alseid of Life's Bounty
23%inclusion5 decks22 decks
21%synergy
Valley Floodcaller
18%inclusion4 decks22 decks
14%synergy
Archon of Sun's Grace
18%inclusion4 decks22 decks
14%synergy
Overlord of the Balemurk
18%inclusion4 decks22 decks
16%synergy
Ghostly Dancers
18%inclusion4 decks22 decks
16%synergy
Abdel Adrian, Gorion's Ward
18%inclusion4 decks22 decks
17%synergy
Millikin
18%inclusion4 decks22 decks
18%synergy
Stenn, Paranoid Partisan
14%inclusion3 decks22 decks
12%synergy
Displacer Kitten
14%inclusion3 decks22 decks
7%synergy
Angel of Suffering
14%inclusion3 decks22 decks
13%synergy
Skullsnap Nuisance
14%inclusion3 decks22 decks
13%synergy
Spirited Companion
14%inclusion3 decks22 decks
12%synergy
Balemurk Leech
14%inclusion3 decks22 decks
13%synergy
Sun Titan
14%inclusion3 decks22 decks
6%synergy
Zur, Eternal Schemer
14%inclusion3 decks22 decks
10%synergy
Ledger Shredder
14%inclusion3 decks22 decks
5%synergy
Mindwrack Harpy
14%inclusion3 decks22 decks
13%synergy
Solemn Simulacrum
9.1%inclusion2 decks22 decks
-4%synergy
Starnheim Courser
9.1%inclusion2 decks22 decks
6%synergy
Baleful Strix
9.1%inclusion2 decks22 decks
-12%synergy
Lurrus of the Dream-Den
9.1%inclusion2 decks22 decks
8%synergy
Scholar of New Horizons
9.1%inclusion2 decks22 decks
8%synergy
Fear of Surveillance
9.1%inclusion2 decks22 decks
9%synergy
Soaring Lightbringer
9.1%inclusion2 decks22 decks
5%synergy
Boggart Trawler
9.1%inclusion2 decks22 decks
6%synergy
Moon-Blessed Cleric
9.1%inclusion2 decks22 decks
4%synergy
Enduring Curiosity
9.1%inclusion2 decks22 decks
1%synergy
Deranged Assistant
9.1%inclusion2 decks22 decks
9%synergy
Archaeomancer
9.1%inclusion2 decks22 decks
7%synergy
Laboratory Maniac
9.1%inclusion2 decks22 decks
6%synergy
Cloud of Faeries
9.1%inclusion2 decks22 decks
8%synergy
Tameshi, Reality Architect
9.1%inclusion2 decks22 decks
8%synergy
Thassa's Devourer
9.1%inclusion2 decks22 decks
9%synergy
Hullbreaker Horror
9.1%inclusion2 decks22 decks
3%synergy
Likeness Looter
9.1%inclusion2 decks22 decks
2%synergy
Instants
Swords to Plowshares
41%inclusion9 decks22 decks
-27%synergy
Arcane Denial
36%inclusion8 decks22 decks
16%synergy
Swan Song
32%inclusion7 decks22 decks
12%synergy
An Offer You Can't Refuse
23%inclusion5 decks22 decks
-5%synergy
Negate
23%inclusion5 decks22 decks
7%synergy
Void Rend
23%inclusion5 decks22 decks
-12%synergy
Otherworldly Gaze
23%inclusion5 decks22 decks
21%synergy
Counterspell
23%inclusion5 decks22 decks
-19%synergy
Dark Ritual
18%inclusion4 decks22 decks
-2%synergy
Mana Drain
18%inclusion4 decks22 decks
1%synergy
Perplex
18%inclusion4 decks22 decks
17%synergy
Inkshield
18%inclusion4 decks22 decks
8%synergy
Ephemerate
14%inclusion3 decks22 decks
10%synergy
Faithful Mending
14%inclusion3 decks22 decks
10%synergy
Waterlogged Teachings
14%inclusion3 decks22 decks
9%synergy
Fell the Profane
9.1%inclusion2 decks22 decks
-0%synergy
Muddle the Mixture
9.1%inclusion2 decks22 decks
5%synergy
Drown in the Loch
9.1%inclusion2 decks22 decks
7%synergy
Dovin's Veto
9.1%inclusion2 decks22 decks
-17%synergy
Fact or Fiction
9.1%inclusion2 decks22 decks
6%synergy
Cabal Ritual
9.1%inclusion2 decks22 decks
6%synergy
Darkblast
9.1%inclusion2 decks22 decks
9%synergy
Thirst for Meaning
9.1%inclusion2 decks22 decks
8%synergy
Strix Serenade
9.1%inclusion2 decks22 decks
6%synergy
Delay
9.1%inclusion2 decks22 decks
7%synergy
Sink into Stupor
9.1%inclusion2 decks22 decks
-4%synergy
Path to Exile
9.1%inclusion2 decks22 decks
-33%synergy
Spider-Sense
6.7%inclusion1 decks15 decks
5%synergy
Consult the Star Charts
6.3%inclusion1 decks16 decks
5%synergy
Dreams of Laguna
5.6%inclusion1 decks18 decks
5%synergy
Swallowed by Leviathan
5.6%inclusion1 decks18 decks
5%synergy
Sorceries
Glimpse the Unthinkable
32%inclusion7 decks22 decks
31%synergy
Space-Time Anomaly
25%inclusion4 decks16 decks
23%synergy
Replenish
18%inclusion4 decks22 decks
16%synergy
Toxic Deluge
18%inclusion4 decks22 decks
-2%synergy
Austere Command
14%inclusion3 decks22 decks
5%synergy
Incarnation Technique
14%inclusion3 decks22 decks
13%synergy
Resurgent Belief
14%inclusion3 decks22 decks
12%synergy
Buried Alive
14%inclusion3 decks22 decks
9%synergy
Reanimate
14%inclusion3 decks22 decks
-3%synergy
Traumatize
14%inclusion3 decks22 decks
13%synergy
Redress Fate
14%inclusion3 decks22 decks
8%synergy
Singularity Rupture
13%inclusion2 decks16 decks
10%synergy
Windfall
9.1%inclusion2 decks22 decks
-4%synergy
Time Wipe
9.1%inclusion2 decks22 decks
3%synergy
Unearth
9.1%inclusion2 decks22 decks
7%synergy
Scheming Symmetry
9.1%inclusion2 decks22 decks
8%synergy
Damn
9.1%inclusion2 decks22 decks
-11%synergy
Taigam's Scheming
9.1%inclusion2 decks22 decks
9%synergy
Dance of the Manse
9.1%inclusion2 decks22 decks
6%synergy
Utility Artifacts
Mesmeric Orb
23%inclusion5 decks22 decks
22%synergy
Perpetual Timepiece
18%inclusion4 decks22 decks
18%synergy
Wayfarer's Bauble
18%inclusion4 decks22 decks
11%synergy
Enchantments
Dance of the Dead
41%inclusion9 decks22 decks
39%synergy
Seal of Cleansing
36%inclusion8 decks22 decks
35%synergy
Seal of Removal
36%inclusion8 decks22 decks
36%synergy
Darksteel Mutation
32%inclusion7 decks22 decks
26%synergy
Touch the Spirit Realm
32%inclusion7 decks22 decks
30%synergy
Starfield of Nyx
32%inclusion7 decks22 decks
28%synergy
Sphere of Safety
32%inclusion7 decks22 decks
22%synergy
Solitary Confinement
32%inclusion7 decks22 decks
30%synergy
Ghostly Prison
32%inclusion7 decks22 decks
9%synergy
Stillness in Motion
30%inclusion6 decks20 decks
30%synergy
Court of Cunning
27%inclusion6 decks22 decks
26%synergy
Sigil of the Empty Throne
27%inclusion6 decks22 decks
22%synergy
Copy Enchantment
27%inclusion6 decks22 decks
22%synergy
Monologue Tax
27%inclusion6 decks22 decks
21%synergy
Static Prison
27%inclusion6 decks22 decks
27%synergy
Secret Arcade // Dusty Parlor
27%inclusion6 decks22 decks
23%synergy
Sheltered by Ghosts
27%inclusion6 decks22 decks
25%synergy
Greater Auramancy
27%inclusion6 decks22 decks
23%synergy
Cacophony Unleashed
23%inclusion5 decks22 decks
21%synergy
Out of the Tombs
23%inclusion5 decks22 decks
22%synergy
Chronic Flooding
23%inclusion5 decks22 decks
23%synergy
Authority of the Consuls
23%inclusion5 decks22 decks
9%synergy
Leyline of Anticipation
23%inclusion5 decks22 decks
18%synergy
All That Glitters
23%inclusion5 decks22 decks
14%synergy
Defiled Crypt // Cadaver Lab
23%inclusion5 decks22 decks
22%synergy
Teval's Judgment
19%inclusion4 decks21 decks
18%synergy
Imprisoned in the Moon
18%inclusion4 decks22 decks
11%synergy
Court of Ardenvale
18%inclusion4 decks22 decks
18%synergy
Eaten by Piranhas
18%inclusion4 decks22 decks
17%synergy
Polluted Cistern // Dim Oubliette
18%inclusion4 decks22 decks
18%synergy
Nowhere to Run
18%inclusion4 decks22 decks
17%synergy
Ethereal Armor
18%inclusion4 decks22 decks
14%synergy
Aura of Silence
18%inclusion4 decks22 decks
15%synergy
Phyrexian Arena
18%inclusion4 decks22 decks
4%synergy
Search for Azcanta
18%inclusion4 decks22 decks
17%synergy
Noggle the Mind
18%inclusion2 decks11 decks
18%synergy
Chakra Meditation
17%inclusion2 decks12 decks
17%synergy
Glasswing Grace
14%inclusion3 decks22 decks
11%synergy
Unable to Scream
14%inclusion3 decks22 decks
13%synergy
Attunement
14%inclusion3 decks22 decks
13%synergy
Charitable Levy
14%inclusion3 decks22 decks
13%synergy
Shark Typhoon
14%inclusion3 decks22 decks
8%synergy
Timely Ward
14%inclusion3 decks22 decks
9%synergy
Benevolent Blessing
14%inclusion3 decks22 decks
13%synergy
Restricted Office // Lecture Hall
14%inclusion3 decks22 decks
12%synergy
Dimensional Exile
11%inclusion1 decks9 decks
11%synergy
Endless Foot Assault
11%inclusion1 decks9 decks
8%synergy
Retro-Mutation
11%inclusion1 decks9 decks
11%synergy
One with the Multiverse
9.1%inclusion2 decks22 decks
4%synergy
Omen of the Dead
9.1%inclusion2 decks22 decks
9%synergy
Planeswalkers
Ashiok, Dream Render
18%inclusion4 decks22 decks
17%synergy
Utility Lands
Hall of Heliod's Generosity
41%inclusion9 decks22 decks
28%synergy
Takenuma, Abandoned Mire
27%inclusion6 decks22 decks
21%synergy
Otawara, Soaring City
27%inclusion6 decks22 decks
8%synergy
Bojuka Bog
23%inclusion5 decks22 decks
-4%synergy
Cephalid Coliseum
18%inclusion4 decks22 decks
15%synergy
Mystic Sanctuary
14%inclusion3 decks22 decks
10%synergy
Emergence Zone
14%inclusion3 decks22 decks
12%synergy
Eiganjo, Seat of the Empire
14%inclusion3 decks22 decks
9%synergy
Barren Moor
9.1%inclusion2 decks22 decks
7%synergy
Urza's Saga
9.1%inclusion2 decks22 decks
-3%synergy
Lonely Sandbar
9.1%inclusion2 decks22 decks
7%synergy
Secluded Steppe
9.1%inclusion2 decks22 decks
8%synergy
Dakmor Salvage
9.1%inclusion2 decks22 decks
9%synergy
Eumidian Hatchery
6.3%inclusion1 decks16 decks
6%synergy
Adagia, Windswept Bastion
6.3%inclusion1 decks16 decks
4%synergy
Ishgard, the Holy See
5.6%inclusion1 decks18 decks
2%synergy
Eden, Seat of the Sanctum
5.6%inclusion1 decks18 decks
5%synergy
Mana Artifacts
Sol Ring
91%inclusion20 decks22 decks
1%synergy
Arcane Signet
77%inclusion17 decks22 decks
-10%synergy
Orzhov Signet
45%inclusion10 decks22 decks
14%synergy
Dimir Signet
41%inclusion9 decks22 decks
11%synergy
Azorius Signet
41%inclusion9 decks22 decks
11%synergy
Talisman of Hierarchy
36%inclusion8 decks22 decks
-8%synergy
Talisman of Progress
32%inclusion7 decks22 decks
-13%synergy
Talisman of Dominance
32%inclusion7 decks22 decks
-18%synergy
Lotus Petal
18%inclusion4 decks22 decks
8%synergy
Lotus Bloom
9.1%inclusion2 decks22 decks
9%synergy
Fellwar Stone
9.1%inclusion2 decks22 decks
-24%synergy
Mind Stone
9.1%inclusion2 decks22 decks
-3%synergy
Lands
Command Tower
100%inclusion22 decks22 decks
7%synergy
Swamp
95%inclusion21 decks22 decks
4%synergy
Island
95%inclusion21 decks22 decks
2%synergy
Plains
95%inclusion21 decks22 decks
3%synergy
Godless Shrine
73%inclusion16 decks22 decks
21%synergy
Hallowed Fountain
73%inclusion16 decks22 decks
22%synergy
Watery Grave
73%inclusion16 decks22 decks
21%synergy
Caves of Koilos
64%inclusion14 decks22 decks
28%synergy
Raffine's Tower
59%inclusion13 decks22 decks
18%synergy
Meticulous Archive
59%inclusion13 decks22 decks
45%synergy
Marsh Flats
59%inclusion13 decks22 decks
23%synergy
Polluted Delta
59%inclusion13 decks22 decks
21%synergy
Flooded Strand
59%inclusion13 decks22 decks
21%synergy
Undercity Sewers
55%inclusion12 decks22 decks
40%synergy
Shadowy Backstreet
55%inclusion12 decks22 decks
42%synergy
Underground River
55%inclusion12 decks22 decks
20%synergy
Exotic Orchard
50%inclusion11 decks22 decks
-9%synergy
Sea of Clouds
50%inclusion11 decks22 decks
15%synergy
Morphic Pool
45%inclusion10 decks22 decks
12%synergy
Adarkar Wastes
45%inclusion10 decks22 decks
13%synergy
Vault of Champions
45%inclusion10 decks22 decks
13%synergy
Arcane Sanctum
36%inclusion8 decks22 decks
-18%synergy
Windswept Heath
32%inclusion7 decks22 decks
23%synergy
Verdant Catacombs
32%inclusion7 decks22 decks
22%synergy
Misty Rainforest
27%inclusion6 decks22 decks
17%synergy
Dimir Aqueduct
27%inclusion6 decks22 decks
15%synergy
Isolated Chapel
27%inclusion6 decks22 decks
-15%synergy
Arid Mesa
27%inclusion6 decks22 decks
18%synergy
Gloomlake Verge
27%inclusion6 decks22 decks
16%synergy
City of Brass
27%inclusion6 decks22 decks
12%synergy
Bloodstained Mire
27%inclusion6 decks22 decks
17%synergy
Tundra
23%inclusion5 decks22 decks
7%synergy
Glacial Fortress
23%inclusion5 decks22 decks
-21%synergy
Azorius Chancery
23%inclusion5 decks22 decks
10%synergy
Contaminated Landscape
23%inclusion5 decks22 decks
9%synergy
Underground Sea
23%inclusion5 decks22 decks
7%synergy
Ash Barrens
23%inclusion5 decks22 decks
12%synergy
Valgavoth's Lair
23%inclusion5 decks22 decks
20%synergy
Orzhov Basilica
23%inclusion5 decks22 decks
8%synergy
Scrubland
23%inclusion5 decks22 decks
7%synergy
Scalding Tarn
23%inclusion5 decks22 decks
12%synergy
Fabled Passage
18%inclusion4 decks22 decks
10%synergy
Temple of Deceit
18%inclusion4 decks22 decks
1%synergy
Irrigated Farmland
18%inclusion4 decks22 decks
11%synergy
Fetid Heath
18%inclusion4 decks22 decks
5%synergy
Prairie Stream
18%inclusion4 decks22 decks
-22%synergy
Sunken Hollow
18%inclusion4 decks22 decks
-22%synergy
Mana Confluence
18%inclusion4 decks22 decks
4%synergy
Temple of Silence
18%inclusion4 decks22 decks
-0%synergy
Mystic Gate
18%inclusion4 decks22 decks
13%synergy
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