The Master of Keys (Commander) - Expensive Upgraded Control

The Master of Keys
Rank #315
3decks
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Background image for Examining Duskmourn: House of Horror, One Year Later
Josh Nelson
Sep 26, 2025
Josh Nelson
Examining Duskmourn: House of Horror, One Year Later
Last time, we examined Bloomburrow and its cozy woodland vibes. Today, we're taking a much darker turn with Duskmourn: House of Horror!
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Commander Spellbook
Moxfield
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Creatures
Instants
Sorceries
Utility Artifacts
Enchantments
Planeswalkers
Utility Lands
Mana Artifacts
Lands
Back to Top
Smothering Tithe
67%inclusion2 decks3 decks
34%synergy
Rhystic Study
67%inclusion2 decks3 decks
34%synergy
Teferi's Protection
33%inclusion1 decks3 decks
16%synergy
Serra's Sanctum
33%inclusion1 decks3 decks
32%synergy
The One Ring
33%inclusion1 decks3 decks
20%synergy
Intuition
33%inclusion1 decks3 decks
32%synergy
Necropotence
33%inclusion1 decks3 decks
26%synergy
Creatures
Overlord of the Floodpits
67%inclusion2 decks3 decks
63%synergy
Lurrus of the Dream-Den
67%inclusion2 decks3 decks
65%synergy
Scrabbling Skullcrab
33%inclusion1 decks3 decks
32%synergy
Gravebreaker Lamia
33%inclusion1 decks3 decks
32%synergy
Y'shtola, Night's Blessed
33%inclusion1 decks3 decks
32%synergy
Sheoldred, the Apocalypse
33%inclusion1 decks3 decks
25%synergy
Archon of Sun's Grace
33%inclusion1 decks3 decks
29%synergy
Inquisitive Glimmer
33%inclusion1 decks3 decks
26%synergy
Demon of Fate's Design
33%inclusion1 decks3 decks
28%synergy
Jace, Vryn's Prodigy
33%inclusion1 decks3 decks
33%synergy
Fear of Impostors
33%inclusion1 decks3 decks
32%synergy
Sage of Mysteries
33%inclusion1 decks3 decks
33%synergy
Leonin Relic-Warder
33%inclusion1 decks3 decks
33%synergy
Talion, the Kindly Lord
33%inclusion1 decks3 decks
25%synergy
Neerdiv, Devious Diver
33%inclusion1 decks3 decks
33%synergy
Sun Titan
33%inclusion1 decks3 decks
24%synergy
Doomwake Giant
33%inclusion1 decks3 decks
27%synergy
Grim Guardian
33%inclusion1 decks3 decks
31%synergy
Heliod, the Radiant Dawn
33%inclusion1 decks3 decks
29%synergy
Nezahal, Primal Tide
33%inclusion1 decks3 decks
29%synergy
Ghostly Dancers
33%inclusion1 decks3 decks
31%synergy
Toxrill, the Corrosive
33%inclusion1 decks3 decks
31%synergy
Entity Tracker
33%inclusion1 decks3 decks
27%synergy
Abdel Adrian, Gorion's Ward
33%inclusion1 decks3 decks
32%synergy
Valgavoth, Terror Eater
33%inclusion1 decks3 decks
30%synergy
Hullbreaker Horror
33%inclusion1 decks3 decks
27%synergy
Psychic Frog
33%inclusion1 decks3 decks
27%synergy
Ledger Shredder
33%inclusion1 decks3 decks
24%synergy
Jin-Gitaxias, Core Augur
33%inclusion1 decks3 decks
30%synergy
Emet-Selch of the Third Seat
33%inclusion1 decks3 decks
23%synergy
Fandaniel, Telophoroi Ascian
33%inclusion1 decks3 decks
27%synergy
Papalymo Totolymo
33%inclusion1 decks3 decks
23%synergy
Instants
An Offer You Can't Refuse
100%inclusion3 decks3 decks
74%synergy
Mana Drain
100%inclusion3 decks3 decks
82%synergy
Swan Song
100%inclusion3 decks3 decks
81%synergy
Entomb
67%inclusion2 decks3 decks
60%synergy
Swords to Plowshares
67%inclusion2 decks3 decks
-2%synergy
Sink into Stupor
67%inclusion2 decks3 decks
54%synergy
Mental Misstep
33%inclusion1 decks3 decks
26%synergy
Snuff Out
33%inclusion1 decks3 decks
26%synergy
Lim-Dûl's Vault
33%inclusion1 decks3 decks
30%synergy
Fact or Fiction
33%inclusion1 decks3 decks
29%synergy
Brain Freeze
33%inclusion1 decks3 decks
33%synergy
Darkblast
33%inclusion1 decks3 decks
33%synergy
Thirst for Meaning
33%inclusion1 decks3 decks
32%synergy
Strix Serenade
33%inclusion1 decks3 decks
30%synergy
Flusterstorm
33%inclusion1 decks3 decks
25%synergy
Jwari Disruption
33%inclusion1 decks3 decks
33%synergy
Force of Negation
33%inclusion1 decks3 decks
21%synergy
Anguished Unmaking
33%inclusion1 decks3 decks
9%synergy
Faithful Mending
33%inclusion1 decks3 decks
29%synergy
Path to Exile
33%inclusion1 decks3 decks
-9%synergy
Pact of Negation
33%inclusion1 decks3 decks
25%synergy
Sorceries
Toxic Deluge
100%inclusion3 decks3 decks
81%synergy
Supreme Verdict
67%inclusion2 decks3 decks
52%synergy
Sevinne's Reclamation
67%inclusion2 decks3 decks
58%synergy
Damn
67%inclusion2 decks3 decks
46%synergy
Resurgent Belief
33%inclusion1 decks3 decks
31%synergy
Yawgmoth's Will
33%inclusion1 decks3 decks
32%synergy
Farewell
33%inclusion1 decks3 decks
20%synergy
Replenish
33%inclusion1 decks3 decks
32%synergy
Vindicate
33%inclusion1 decks3 decks
23%synergy
Demonic Counsel
33%inclusion1 decks3 decks
32%synergy
Slaughter the Strong
33%inclusion1 decks3 decks
33%synergy
Reanimate
33%inclusion1 decks3 decks
17%synergy
Inevitable Betrayal
33%inclusion1 decks3 decks
33%synergy
Compulsive Research
33%inclusion1 decks3 decks
33%synergy
Circle of Power
33%inclusion1 decks3 decks
26%synergy
Cornered by Black Mages
33%inclusion1 decks3 decks
31%synergy
Utility Artifacts
Mesmeric Orb
67%inclusion2 decks3 decks
66%synergy
Ankh of Mishra
33%inclusion1 decks3 decks
33%synergy
Palantír of Orthanc
33%inclusion1 decks3 decks
32%synergy
Wishclaw Talisman
33%inclusion1 decks3 decks
25%synergy
Enchantments
The Meathook Massacre
100%inclusion3 decks3 decks
97%synergy
Dance of the Dead
100%inclusion3 decks3 decks
98%synergy
Ripples of Undeath
100%inclusion3 decks3 decks
97%synergy
Necromancy
100%inclusion3 decks3 decks
95%synergy
Mystic Remora
100%inclusion3 decks3 decks
78%synergy
Animate Dead
100%inclusion3 decks3 decks
90%synergy
Ghostly Prison
100%inclusion3 decks3 decks
79%synergy
Propaganda
100%inclusion3 decks3 decks
74%synergy
Out of the Tombs
67%inclusion2 decks3 decks
66%synergy
Chronic Flooding
67%inclusion2 decks3 decks
67%synergy
Cemetery Tampering
67%inclusion2 decks3 decks
66%synergy
Seal of Cleansing
67%inclusion2 decks3 decks
65%synergy
Static Prison
67%inclusion2 decks3 decks
66%synergy
Dress Down
67%inclusion2 decks3 decks
64%synergy
Stillness in Motion
67%inclusion2 decks3 decks
66%synergy
Seal of Removal
67%inclusion2 decks3 decks
66%synergy
Trouble in Pairs
67%inclusion2 decks3 decks
61%synergy
Sinister Concoction
67%inclusion2 decks3 decks
67%synergy
Darksteel Mutation
33%inclusion1 decks3 decks
27%synergy
Counterbalance
33%inclusion1 decks3 decks
32%synergy
Smuggler's Share
33%inclusion1 decks3 decks
31%synergy
Grasp of Fate
33%inclusion1 decks3 decks
27%synergy
Court of Cunning
33%inclusion1 decks3 decks
32%synergy
Sigil of the Empty Throne
33%inclusion1 decks3 decks
27%synergy
Unable to Scream
33%inclusion1 decks3 decks
32%synergy
Tinybones Joins Up
33%inclusion1 decks3 decks
32%synergy
Utter Insignificance
33%inclusion1 decks3 decks
33%synergy
Corroding Dragonstorm
33%inclusion1 decks3 decks
33%synergy
Touch the Spirit Realm
33%inclusion1 decks3 decks
31%synergy
Blind Obedience
33%inclusion1 decks3 decks
21%synergy
Hopeless Nightmare
33%inclusion1 decks3 decks
33%synergy
Mirrormade
33%inclusion1 decks3 decks
23%synergy
Estrid's Invocation
33%inclusion1 decks3 decks
29%synergy
Copy Artifact
33%inclusion1 decks3 decks
32%synergy
Out of Time
33%inclusion1 decks3 decks
32%synergy
Charitable Levy
33%inclusion1 decks3 decks
33%synergy
Shark Typhoon
33%inclusion1 decks3 decks
27%synergy
Sphere of Safety
33%inclusion1 decks3 decks
24%synergy
Underworld Dreams
33%inclusion1 decks3 decks
32%synergy
The Tale of Tamiyo
33%inclusion1 decks3 decks
33%synergy
Lethal Vapors
33%inclusion1 decks3 decks
33%synergy
Amphibian Downpour
33%inclusion1 decks3 decks
29%synergy
Witness Protection
33%inclusion1 decks3 decks
31%synergy
Second Chance
33%inclusion1 decks3 decks
33%synergy
Wound Reflection
33%inclusion1 decks3 decks
32%synergy
Kaya's Ghostform
33%inclusion1 decks3 decks
31%synergy
Painful Quandary
33%inclusion1 decks3 decks
31%synergy
Secret Arcade // Dusty Parlor
33%inclusion1 decks3 decks
28%synergy
Polluted Cistern // Dim Oubliette
33%inclusion1 decks3 decks
33%synergy
Land Tax
33%inclusion1 decks3 decks
27%synergy
Planeswalkers
Ashiok, Dream Render
33%inclusion1 decks3 decks
32%synergy
Utility Lands
Hall of Heliod's Generosity
67%inclusion2 decks3 decks
53%synergy
Urza's Saga
67%inclusion2 decks3 decks
55%synergy
Cephalid Coliseum
67%inclusion2 decks3 decks
63%synergy
Urborg, Tomb of Yawgmoth
67%inclusion2 decks3 decks
53%synergy
Otawara, Soaring City
67%inclusion2 decks3 decks
48%synergy
Bojuka Bog
33%inclusion1 decks3 decks
6%synergy
Wasteland
33%inclusion1 decks3 decks
33%synergy
Bazaar of Baghdad
33%inclusion1 decks3 decks
33%synergy
Cabal Coffers
33%inclusion1 decks3 decks
30%synergy
Geier Reach Sanitarium
33%inclusion1 decks3 decks
29%synergy
Takenuma, Abandoned Mire
33%inclusion1 decks3 decks
27%synergy
Strip Mine
33%inclusion1 decks3 decks
32%synergy
Mana Artifacts
Arcane Signet
100%inclusion3 decks3 decks
12%synergy
Sol Ring
100%inclusion3 decks3 decks
10%synergy
Talisman of Progress
33%inclusion1 decks3 decks
-9%synergy
Talisman of Dominance
33%inclusion1 decks3 decks
-16%synergy
Fellwar Stone
33%inclusion1 decks3 decks
-1%synergy
Talisman of Hierarchy
33%inclusion1 decks3 decks
-10%synergy
Lands
Tundra
100%inclusion3 decks3 decks
84%synergy
Command Tower
100%inclusion3 decks3 decks
8%synergy
Underground Sea
100%inclusion3 decks3 decks
84%synergy
Raffine's Tower
100%inclusion3 decks3 decks
59%synergy
Godless Shrine
100%inclusion3 decks3 decks
50%synergy
Scrubland
100%inclusion3 decks3 decks
84%synergy
Marsh Flats
100%inclusion3 decks3 decks
64%synergy
Polluted Delta
100%inclusion3 decks3 decks
63%synergy
Hallowed Fountain
100%inclusion3 decks3 decks
51%synergy
Flooded Strand
100%inclusion3 decks3 decks
62%synergy
Watery Grave
100%inclusion3 decks3 decks
50%synergy
Prismatic Vista
67%inclusion2 decks3 decks
63%synergy
Undercity Sewers
67%inclusion2 decks3 decks
53%synergy
Misty Rainforest
67%inclusion2 decks3 decks
55%synergy
Shadowy Backstreet
67%inclusion2 decks3 decks
54%synergy
Windswept Heath
67%inclusion2 decks3 decks
57%synergy
Swamp
67%inclusion2 decks3 decks
-25%synergy
Sea of Clouds
67%inclusion2 decks3 decks
31%synergy
Verdant Catacombs
67%inclusion2 decks3 decks
56%synergy
Reflecting Pool
67%inclusion2 decks3 decks
59%synergy
Island
67%inclusion2 decks3 decks
-26%synergy
Plains
67%inclusion2 decks3 decks
-25%synergy
Sink into Stupor
67%inclusion2 decks3 decks
54%synergy
Morphic Pool
67%inclusion2 decks3 decks
32%synergy
Arid Mesa
67%inclusion2 decks3 decks
57%synergy
Scalding Tarn
67%inclusion2 decks3 decks
55%synergy
Meticulous Archive
67%inclusion2 decks3 decks
53%synergy
Mana Confluence
67%inclusion2 decks3 decks
53%synergy
Vault of Champions
67%inclusion2 decks3 decks
34%synergy
Bloodstained Mire
67%inclusion2 decks3 decks
56%synergy
Bleachbone Verge
33%inclusion1 decks3 decks
25%synergy
Tarnished Citadel
33%inclusion1 decks3 decks
33%synergy
Jwari Disruption
33%inclusion1 decks3 decks
33%synergy
Gemstone Caverns
33%inclusion1 decks3 decks
25%synergy
Shattered Sanctum
33%inclusion1 decks3 decks
17%synergy
Gloomlake Verge
33%inclusion1 decks3 decks
22%synergy
Floodfarm Verge
33%inclusion1 decks3 decks
22%synergy
City of Brass
33%inclusion1 decks3 decks
18%synergy
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