The Master of Keys (Commander) - Expensive Optimized

The Master of Keys
Rank #316
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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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Creatures
Instants
Sorceries
Utility Artifacts
Enchantments
Planeswalkers
Utility Lands
Mana Artifacts
Lands
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Wan Shi Tong, Librarian
33%inclusion1 decks3 decks
29%synergy
High Synergy Cards
Abdel Adrian, Gorion's Ward
91%inclusion21 decks23 decks
90%synergy
Necromancy
91%inclusion21 decks23 decks
87%synergy
Animate Dead
96%inclusion22 decks23 decks
86%synergy
Entomb
91%inclusion21 decks23 decks
84%synergy
Dance of the Dead
83%inclusion19 decks23 decks
80%synergy
Dress Down
83%inclusion19 decks23 decks
80%synergy
Mystic Remora
96%inclusion22 decks23 decks
74%synergy
Orcish Bowmasters
83%inclusion19 decks23 decks
71%synergy
Valley Floodcaller
74%inclusion17 decks23 decks
70%synergy
Tinybones Joins Up
70%inclusion16 decks23 decks
68%synergy
Top Cards
Esper Sentinel
87%inclusion20 decks23 decks
59%synergy
Dark Ritual
78%inclusion18 decks23 decks
59%synergy
Blind Obedience
78%inclusion18 decks23 decks
66%synergy
Imperial Seal
74%inclusion17 decks23 decks
66%synergy
Thassa's Oracle
74%inclusion17 decks23 decks
64%synergy
Swords to Plowshares
74%inclusion17 decks23 decks
6%synergy
Force of Will
74%inclusion17 decks23 decks
61%synergy
Sevinne's Reclamation
70%inclusion16 decks23 decks
61%synergy
Intuition
70%inclusion16 decks23 decks
68%synergy
Ripples of Undeath
65%inclusion15 decks23 decks
62%synergy
Game Changers
Vampiric Tutor
100%inclusion23 decks23 decks
82%synergy
Ancient Tomb
96%inclusion22 decks23 decks
82%synergy
Rhystic Study
96%inclusion22 decks23 decks
63%synergy
Enlightened Tutor
96%inclusion22 decks23 decks
75%synergy
Demonic Tutor
96%inclusion22 decks23 decks
74%synergy
Chrome Mox
91%inclusion21 decks23 decks
82%synergy
Mox Diamond
91%inclusion21 decks23 decks
84%synergy
Smothering Tithe
87%inclusion20 decks23 decks
54%synergy
The One Ring
87%inclusion20 decks23 decks
73%synergy
Mana Vault
87%inclusion20 decks23 decks
77%synergy
Creatures
Lotho, Corrupt Shirriff
65%inclusion15 decks23 decks
48%synergy
Grand Abolisher
65%inclusion15 decks23 decks
51%synergy
Opposition Agent
57%inclusion13 decks23 decks
47%synergy
Ranger-Captain of Eos
57%inclusion13 decks23 decks
50%synergy
Displacer Kitten
52%inclusion12 decks23 decks
45%synergy
Auriok Salvagers
52%inclusion12 decks23 decks
52%synergy
Hullbreaker Horror
48%inclusion11 decks23 decks
42%synergy
Drannith Magistrate
43%inclusion10 decks23 decks
35%synergy
Ledger Shredder
43%inclusion10 decks23 decks
35%synergy
Lurrus of the Dream-Den
39%inclusion9 decks23 decks
37%synergy
Psychic Frog
39%inclusion9 decks23 decks
32%synergy
Talion, the Kindly Lord
30%inclusion7 decks23 decks
22%synergy
Voice of Victory
27%inclusion4 decks15 decks
18%synergy
Archivist of Oghma
26%inclusion6 decks23 decks
19%synergy
Victor, Valgavoth's Seneschal
26%inclusion6 decks23 decks
24%synergy
Phyrexian Metamorph
22%inclusion5 decks23 decks
13%synergy
Inquisitive Glimmer
22%inclusion5 decks23 decks
14%synergy
Mockingbird
22%inclusion5 decks23 decks
17%synergy
Entity Tracker
22%inclusion5 decks23 decks
15%synergy
Starfield Mystic
17%inclusion4 decks23 decks
11%synergy
Hedron Crab
17%inclusion4 decks23 decks
17%synergy
Pollywog Prodigy
17%inclusion4 decks23 decks
13%synergy
Heliod, the Radiant Dawn
17%inclusion4 decks23 decks
13%synergy
Overlord of the Balemurk
17%inclusion4 decks23 decks
15%synergy
Scrabbling Skullcrab
13%inclusion3 decks23 decks
12%synergy
Hoarding Broodlord
13%inclusion3 decks23 decks
11%synergy
Fear of Impostors
13%inclusion3 decks23 decks
11%synergy
Snapcaster Mage
13%inclusion3 decks23 decks
11%synergy
Leonin Relic-Warder
13%inclusion3 decks23 decks
13%synergy
Mesa Enchantress
13%inclusion3 decks23 decks
4%synergy
Grim Guardian
13%inclusion3 decks23 decks
10%synergy
Volatile Stormdrake
8.7%inclusion2 decks23 decks
7%synergy
Enduring Tenacity
8.7%inclusion2 decks23 decks
1%synergy
Faerie Mastermind
8.7%inclusion2 decks23 decks
-1%synergy
Tameshi, Reality Architect
8.7%inclusion2 decks23 decks
8%synergy
Ondu Spiritdancer
8.7%inclusion2 decks23 decks
2%synergy
Emry, Lurker of the Loch
8.7%inclusion2 decks23 decks
3%synergy
Ghostly Pilferer
8.7%inclusion2 decks23 decks
2%synergy
Enduring Curiosity
8.7%inclusion2 decks23 decks
1%synergy
Zur, Eternal Schemer
8.7%inclusion2 decks23 decks
5%synergy
Instants
Silence
65%inclusion15 decks23 decks
55%synergy
Cyclonic Rift
65%inclusion15 decks23 decks
40%synergy
Pact of Negation
65%inclusion15 decks23 decks
57%synergy
Fierce Guardianship
65%inclusion15 decks23 decks
45%synergy
Tainted Pact
61%inclusion14 decks23 decks
53%synergy
Mindbreak Trap
61%inclusion14 decks23 decks
54%synergy
Flusterstorm
61%inclusion14 decks23 decks
52%synergy
Demonic Consultation
61%inclusion14 decks23 decks
52%synergy
Force of Negation
61%inclusion14 decks23 decks
49%synergy
Borne Upon a Wind
61%inclusion14 decks23 decks
56%synergy
Mental Misstep
57%inclusion13 decks23 decks
49%synergy
Cabal Ritual
52%inclusion12 decks23 decks
49%synergy
Mystical Tutor
52%inclusion12 decks23 decks
40%synergy
Swan Song
48%inclusion11 decks23 decks
28%synergy
An Offer You Can't Refuse
39%inclusion9 decks23 decks
13%synergy
Mana Drain
39%inclusion9 decks23 decks
22%synergy
Gifts Ungiven
35%inclusion8 decks23 decks
33%synergy
Into the Flood Maw
35%inclusion8 decks23 decks
31%synergy
Chain of Vapor
26%inclusion6 decks23 decks
23%synergy
Retraction Helix
22%inclusion5 decks23 decks
21%synergy
Sink into Stupor
22%inclusion5 decks23 decks
9%synergy
Brain Freeze
17%inclusion4 decks23 decks
17%synergy
Banishing Knack
17%inclusion4 decks23 decks
17%synergy
Path to Exile
17%inclusion4 decks23 decks
-24%synergy
Sacrifice
13%inclusion3 decks23 decks
12%synergy
Counterspell
13%inclusion3 decks23 decks
-28%synergy
Saw in Half
13%inclusion3 decks23 decks
11%synergy
Deadly Rollick
8.7%inclusion2 decks23 decks
-5%synergy
Teferi's Protection
8.7%inclusion2 decks23 decks
-8%synergy
Snuff Out
8.7%inclusion2 decks23 decks
1%synergy
Void Rend
8.7%inclusion2 decks23 decks
-24%synergy
Culling the Weak
8.7%inclusion2 decks23 decks
7%synergy
Sorceries
Beseech the Mirror
30%inclusion7 decks23 decks
26%synergy
Lively Dirge
26%inclusion6 decks23 decks
25%synergy
Toxic Deluge
26%inclusion6 decks23 decks
7%synergy
Cabal Therapy
22%inclusion5 decks23 decks
22%synergy
Replenish
17%inclusion4 decks23 decks
16%synergy
Reanimate
17%inclusion4 decks23 decks
2%synergy
Demonic Counsel
13%inclusion3 decks23 decks
12%synergy
Mnemonic Betrayal
13%inclusion3 decks23 decks
10%synergy
Windfall
8.7%inclusion2 decks23 decks
-5%synergy
Idyllic Tutor
8.7%inclusion2 decks23 decks
4%synergy
Grim Tutor
8.7%inclusion2 decks23 decks
5%synergy
Redress Fate
8.7%inclusion2 decks23 decks
2%synergy
Utility Artifacts
Wishclaw Talisman
52%inclusion12 decks23 decks
44%synergy
Sensei's Divining Top
17%inclusion4 decks23 decks
7%synergy
Vexing Bauble
17%inclusion4 decks23 decks
16%synergy
Mesmeric Orb
13%inclusion3 decks23 decks
12%synergy
Enchantments
Necropotence
57%inclusion13 decks23 decks
50%synergy
Amphibian Downpour
48%inclusion11 decks23 decks
43%synergy
Copy Artifact
43%inclusion10 decks23 decks
42%synergy
The Meathook Massacre
39%inclusion9 decks23 decks
36%synergy
Steal Enchantment
39%inclusion9 decks23 decks
38%synergy
Chthonian Nightmare
35%inclusion8 decks23 decks
34%synergy
Counterbalance
30%inclusion7 decks23 decks
29%synergy
Static Prison
30%inclusion7 decks23 decks
30%synergy
Trouble in Pairs
30%inclusion7 decks23 decks
25%synergy
Touch the Spirit Realm
26%inclusion6 decks23 decks
24%synergy
Stillness in Motion
21%inclusion3 decks14 decks
21%synergy
Cemetery Tampering
17%inclusion4 decks23 decks
17%synergy
Bloodchief Ascension
17%inclusion4 decks23 decks
12%synergy
Mirrormade
17%inclusion4 decks23 decks
8%synergy
Starfield of Nyx
17%inclusion4 decks23 decks
13%synergy
Teval's Judgment
13%inclusion2 decks15 decks
12%synergy
Darksteel Mutation
13%inclusion3 decks23 decks
7%synergy
Leyline of Anticipation
13%inclusion3 decks23 decks
8%synergy
Secret Arcade // Dusty Parlor
13%inclusion3 decks23 decks
8%synergy
Land Tax
13%inclusion3 decks23 decks
7%synergy
Chains of Mephistopheles
13%inclusion3 decks23 decks
13%synergy
Ghostly Prison
13%inclusion3 decks23 decks
-8%synergy
Founding the Third Path
8.7%inclusion2 decks23 decks
9%synergy
Authority of the Consuls
8.7%inclusion2 decks23 decks
-2%synergy
Mind Over Matter
8.7%inclusion2 decks23 decks
8%synergy
Phyrexian Unlife
8.7%inclusion2 decks23 decks
7%synergy
The Cruelty of Gix
8.7%inclusion2 decks23 decks
8%synergy
Estrid's Invocation
8.7%inclusion2 decks23 decks
4%synergy
Shark Typhoon
8.7%inclusion2 decks23 decks
3%synergy
Sphere of Safety
8.7%inclusion2 decks23 decks
-1%synergy
Monologue Tax
8.7%inclusion2 decks23 decks
3%synergy
Enchanted Evening
8.7%inclusion2 decks23 decks
7%synergy
Out of the Tombs
8.7%inclusion2 decks23 decks
8%synergy
Hallowed Haunting
8.7%inclusion2 decks23 decks
6%synergy
Solemnity
8.7%inclusion2 decks23 decks
5%synergy
Propaganda
8.7%inclusion2 decks23 decks
-17%synergy
Exquisite Blood
8.7%inclusion2 decks23 decks
2%synergy
Aura of Silence
8.7%inclusion2 decks23 decks
5%synergy
Planeswalkers
Teferi, Time Raveler
52%inclusion12 decks23 decks
44%synergy
Utility Lands
Otawara, Soaring City
78%inclusion18 decks23 decks
59%synergy
Urza's Saga
48%inclusion11 decks23 decks
36%synergy
Serra's Sanctum
30%inclusion7 decks23 decks
29%synergy
Emergence Zone
30%inclusion7 decks23 decks
28%synergy
Hall of Heliod's Generosity
26%inclusion6 decks23 decks
13%synergy
Takenuma, Abandoned Mire
26%inclusion6 decks23 decks
20%synergy
Minamo, School at Water's Edge
22%inclusion5 decks23 decks
18%synergy
Cephalid Coliseum
17%inclusion4 decks23 decks
14%synergy
Uthros, Titanic Godcore
17%inclusion1 decks6 decks
13%synergy
Urborg, Tomb of Yawgmoth
13%inclusion3 decks23 decks
0%synergy
Mistrise Village
6.7%inclusion1 decks15 decks
3%synergy
Mana Artifacts
Arcane Signet
100%inclusion23 decks23 decks
12%synergy
Sol Ring
91%inclusion21 decks23 decks
1%synergy
Lotus Petal
78%inclusion18 decks23 decks
67%synergy
Talisman of Dominance
74%inclusion17 decks23 decks
25%synergy
Lion's Eye Diamond
70%inclusion16 decks23 decks
67%synergy
Mox Opal
65%inclusion15 decks23 decks
56%synergy
Fellwar Stone
61%inclusion14 decks23 decks
27%synergy
Talisman of Hierarchy
48%inclusion11 decks23 decks
5%synergy
Talisman of Progress
39%inclusion9 decks23 decks
-3%synergy
Grim Monolith
39%inclusion9 decks23 decks
36%synergy
The Soul Stone
33%inclusion2 decks6 decks
31%synergy
Mox Amber
22%inclusion5 decks23 decks
16%synergy
Dimir Signet
8.7%inclusion2 decks23 decks
-24%synergy
Azorius Signet
8.7%inclusion2 decks23 decks
-24%synergy
Lands
Tundra
100%inclusion23 decks23 decks
84%synergy
Command Tower
100%inclusion23 decks23 decks
8%synergy
Scrubland
100%inclusion23 decks23 decks
84%synergy
Underground Sea
100%inclusion23 decks23 decks
84%synergy
Watery Grave
100%inclusion23 decks23 decks
50%synergy
Polluted Delta
96%inclusion22 decks23 decks
59%synergy
Godless Shrine
96%inclusion22 decks23 decks
46%synergy
Marsh Flats
96%inclusion22 decks23 decks
60%synergy
Hallowed Fountain
91%inclusion21 decks23 decks
42%synergy
Flooded Strand
91%inclusion21 decks23 decks
54%synergy
Bloodstained Mire
83%inclusion19 decks23 decks
71%synergy
Undercity Sewers
78%inclusion18 decks23 decks
64%synergy
Misty Rainforest
74%inclusion17 decks23 decks
63%synergy
Verdant Catacombs
74%inclusion17 decks23 decks
63%synergy
Mana Confluence
74%inclusion17 decks23 decks
60%synergy
Gemstone Caverns
70%inclusion16 decks23 decks
62%synergy
City of Brass
70%inclusion16 decks23 decks
54%synergy
Windswept Heath
65%inclusion15 decks23 decks
55%synergy
Arid Mesa
65%inclusion15 decks23 decks
55%synergy
Morphic Pool
65%inclusion15 decks23 decks
31%synergy
Vault of Champions
61%inclusion14 decks23 decks
28%synergy
Exotic Orchard
57%inclusion13 decks23 decks
-2%synergy
Sea of Clouds
57%inclusion13 decks23 decks
21%synergy
Scalding Tarn
57%inclusion13 decks23 decks
45%synergy
Island
48%inclusion11 decks23 decks
-45%synergy
Shadowy Backstreet
39%inclusion9 decks23 decks
27%synergy
Meticulous Archive
39%inclusion9 decks23 decks
26%synergy
Swamp
39%inclusion9 decks23 decks
-52%synergy
Plains
35%inclusion8 decks23 decks
-57%synergy
Raffine's Tower
30%inclusion7 decks23 decks
-11%synergy
Sink into Stupor
22%inclusion5 decks23 decks
9%synergy
Forbidden Orchard
17%inclusion4 decks23 decks
15%synergy
Snow-Covered Swamp
17%inclusion4 decks23 decks
14%synergy
Valgavoth's Lair
13%inclusion3 decks23 decks
10%synergy
Cavern of Souls
13%inclusion3 decks23 decks
6%synergy
Spire of Industry
13%inclusion3 decks23 decks
4%synergy
Underground River
13%inclusion3 decks23 decks
-19%synergy
Snow-Covered Plains
13%inclusion3 decks23 decks
10%synergy
Bleachbone Verge
9.1%inclusion2 decks22 decks
1%synergy
Glacial Fortress
8.7%inclusion2 decks23 decks
-30%synergy
Caves of Koilos
8.7%inclusion2 decks23 decks
-27%synergy
Snow-Covered Island
8.7%inclusion2 decks23 decks
5%synergy
Isolated Chapel
8.7%inclusion2 decks23 decks
-29%synergy
Reflecting Pool
8.7%inclusion2 decks23 decks
1%synergy
Arcane Sanctum
8.7%inclusion2 decks23 decks
-46%synergy
Adarkar Wastes
8.7%inclusion2 decks23 decks
-22%synergy
Floodfarm Verge
8.7%inclusion2 decks23 decks
-2%synergy
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