The Master of Keys (Commander) - Expensive Optimized

The Master of Keys
Rank #315
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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
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Creatures
Instants
Sorceries
Utility Artifacts
Enchantments
Planeswalkers
Utility Lands
Mana Artifacts
Lands
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Wan Shi Tong, Librarian
50%inclusion2 decks4 decks
45%synergy
Bender's Waterskin
17%inclusion1 decks6 decks
14%synergy
High Synergy Cards
Abdel Adrian, Gorion's Ward
92%inclusion22 decks24 decks
90%synergy
Necromancy
92%inclusion22 decks24 decks
87%synergy
Animate Dead
96%inclusion23 decks24 decks
86%synergy
Entomb
92%inclusion22 decks24 decks
85%synergy
Dance of the Dead
83%inclusion20 decks24 decks
81%synergy
Dress Down
83%inclusion20 decks24 decks
81%synergy
Mystic Remora
96%inclusion23 decks24 decks
74%synergy
Orcish Bowmasters
83%inclusion20 decks24 decks
72%synergy
Intuition
71%inclusion17 decks24 decks
69%synergy
Imperial Seal
75%inclusion18 decks24 decks
67%synergy
Top Cards
Esper Sentinel
88%inclusion21 decks24 decks
60%synergy
Dark Ritual
79%inclusion19 decks24 decks
60%synergy
Blind Obedience
79%inclusion19 decks24 decks
67%synergy
Force of Will
75%inclusion18 decks24 decks
62%synergy
Thassa's Oracle
75%inclusion18 decks24 decks
65%synergy
Sevinne's Reclamation
71%inclusion17 decks24 decks
62%synergy
Valley Floodcaller
71%inclusion17 decks24 decks
67%synergy
Swords to Plowshares
71%inclusion17 decks24 decks
3%synergy
Ripples of Undeath
67%inclusion16 decks24 decks
64%synergy
Silence
67%inclusion16 decks24 decks
56%synergy
Game Changers
Vampiric Tutor
100%inclusion24 decks24 decks
82%synergy
Rhystic Study
96%inclusion23 decks24 decks
63%synergy
Enlightened Tutor
96%inclusion23 decks24 decks
76%synergy
Ancient Tomb
96%inclusion23 decks24 decks
82%synergy
Demonic Tutor
96%inclusion23 decks24 decks
74%synergy
The One Ring
88%inclusion21 decks24 decks
74%synergy
Mox Diamond
88%inclusion21 decks24 decks
80%synergy
Smothering Tithe
88%inclusion21 decks24 decks
55%synergy
Chrome Mox
88%inclusion21 decks24 decks
78%synergy
Mana Vault
83%inclusion20 decks24 decks
74%synergy
Creatures
Lotho, Corrupt Shirriff
67%inclusion16 decks24 decks
50%synergy
Grand Abolisher
67%inclusion16 decks24 decks
52%synergy
Ranger-Captain of Eos
58%inclusion14 decks24 decks
52%synergy
Opposition Agent
58%inclusion14 decks24 decks
49%synergy
Auriok Salvagers
54%inclusion13 decks24 decks
54%synergy
Displacer Kitten
54%inclusion13 decks24 decks
47%synergy
Hullbreaker Horror
50%inclusion12 decks24 decks
44%synergy
Lurrus of the Dream-Den
42%inclusion10 decks24 decks
40%synergy
Drannith Magistrate
42%inclusion10 decks24 decks
33%synergy
Ledger Shredder
42%inclusion10 decks24 decks
33%synergy
Psychic Frog
38%inclusion9 decks24 decks
31%synergy
Archivist of Oghma
29%inclusion7 decks24 decks
22%synergy
Talion, the Kindly Lord
29%inclusion7 decks24 decks
21%synergy
Voice of Victory
25%inclusion4 decks16 decks
17%synergy
Mockingbird
25%inclusion6 decks24 decks
21%synergy
Phyrexian Metamorph
25%inclusion6 decks24 decks
16%synergy
Victor, Valgavoth's Seneschal
25%inclusion6 decks24 decks
23%synergy
Inquisitive Glimmer
21%inclusion5 decks24 decks
13%synergy
Overlord of the Balemurk
21%inclusion5 decks24 decks
19%synergy
Entity Tracker
21%inclusion5 decks24 decks
14%synergy
Heliod, the Radiant Dawn
17%inclusion4 decks24 decks
13%synergy
Starfield Mystic
17%inclusion4 decks24 decks
10%synergy
Hedron Crab
17%inclusion4 decks24 decks
16%synergy
Pollywog Prodigy
17%inclusion4 decks24 decks
12%synergy
Scrabbling Skullcrab
13%inclusion3 decks24 decks
11%synergy
Snapcaster Mage
13%inclusion3 decks24 decks
11%synergy
Leonin Relic-Warder
13%inclusion3 decks24 decks
12%synergy
Mesa Enchantress
13%inclusion3 decks24 decks
3%synergy
Hoarding Broodlord
13%inclusion3 decks24 decks
11%synergy
Fear of Impostors
13%inclusion3 decks24 decks
11%synergy
Grim Guardian
13%inclusion3 decks24 decks
10%synergy
Zur, Eternal Schemer
13%inclusion3 decks24 decks
9%synergy
Volatile Stormdrake
8.3%inclusion2 decks24 decks
7%synergy
Grand Arbiter Augustin IV
8.3%inclusion2 decks24 decks
3%synergy
Demon of Fate's Design
8.3%inclusion2 decks24 decks
3%synergy
Tameshi, Reality Architect
8.3%inclusion2 decks24 decks
8%synergy
Ondu Spiritdancer
8.3%inclusion2 decks24 decks
2%synergy
Ghostly Pilferer
8.3%inclusion2 decks24 decks
1%synergy
Enduring Tenacity
8.3%inclusion2 decks24 decks
1%synergy
Enduring Curiosity
8.3%inclusion2 decks24 decks
1%synergy
Faerie Mastermind
8.3%inclusion2 decks24 decks
-1%synergy
Zur the Enchanter
8.3%inclusion2 decks24 decks
3%synergy
Emry, Lurker of the Loch
8.3%inclusion2 decks24 decks
3%synergy
Instants
Fierce Guardianship
67%inclusion16 decks24 decks
46%synergy
Cyclonic Rift
67%inclusion16 decks24 decks
42%synergy
Demonic Consultation
63%inclusion15 decks24 decks
54%synergy
Force of Negation
63%inclusion15 decks24 decks
51%synergy
Mindbreak Trap
63%inclusion15 decks24 decks
56%synergy
Tainted Pact
63%inclusion15 decks24 decks
55%synergy
Pact of Negation
63%inclusion15 decks24 decks
54%synergy
Mental Misstep
58%inclusion14 decks24 decks
51%synergy
Flusterstorm
58%inclusion14 decks24 decks
50%synergy
Borne Upon a Wind
58%inclusion14 decks24 decks
54%synergy
Mystical Tutor
54%inclusion13 decks24 decks
42%synergy
Cabal Ritual
50%inclusion12 decks24 decks
47%synergy
Swan Song
46%inclusion11 decks24 decks
26%synergy
An Offer You Can't Refuse
42%inclusion10 decks24 decks
15%synergy
Mana Drain
38%inclusion9 decks24 decks
20%synergy
Gifts Ungiven
33%inclusion8 decks24 decks
31%synergy
Into the Flood Maw
33%inclusion8 decks24 decks
30%synergy
Chain of Vapor
25%inclusion6 decks24 decks
21%synergy
Sink into Stupor
21%inclusion5 decks24 decks
8%synergy
Retraction Helix
21%inclusion5 decks24 decks
20%synergy
Path to Exile
17%inclusion4 decks24 decks
-25%synergy
Brain Freeze
17%inclusion4 decks24 decks
16%synergy
Banishing Knack
17%inclusion4 decks24 decks
16%synergy
Counterspell
13%inclusion3 decks24 decks
-29%synergy
Sacrifice
13%inclusion3 decks24 decks
12%synergy
Teferi's Protection
13%inclusion3 decks24 decks
-4%synergy
Saw in Half
13%inclusion3 decks24 decks
10%synergy
Deadly Rollick
8.3%inclusion2 decks24 decks
-5%synergy
Culling the Weak
8.3%inclusion2 decks24 decks
7%synergy
Void Rend
8.3%inclusion2 decks24 decks
-25%synergy
Snuff Out
8.3%inclusion2 decks24 decks
1%synergy
Sorceries
Lively Dirge
29%inclusion7 decks24 decks
28%synergy
Beseech the Mirror
29%inclusion7 decks24 decks
25%synergy
Toxic Deluge
25%inclusion6 decks24 decks
6%synergy
Cabal Therapy
21%inclusion5 decks24 decks
21%synergy
Reanimate
17%inclusion4 decks24 decks
1%synergy
Replenish
17%inclusion4 decks24 decks
15%synergy
Demonic Counsel
13%inclusion3 decks24 decks
11%synergy
Mnemonic Betrayal
13%inclusion3 decks24 decks
9%synergy
Idyllic Tutor
8.3%inclusion2 decks24 decks
4%synergy
Windfall
8.3%inclusion2 decks24 decks
-6%synergy
Grim Tutor
8.3%inclusion2 decks24 decks
4%synergy
Redress Fate
8.3%inclusion2 decks24 decks
2%synergy
Utility Artifacts
Wishclaw Talisman
54%inclusion13 decks24 decks
46%synergy
Sensei's Divining Top
17%inclusion4 decks24 decks
7%synergy
Vexing Bauble
17%inclusion4 decks24 decks
15%synergy
Mesmeric Orb
13%inclusion3 decks24 decks
11%synergy
Enchantments
Tinybones Joins Up
67%inclusion16 decks24 decks
65%synergy
Necropotence
58%inclusion14 decks24 decks
51%synergy
Amphibian Downpour
46%inclusion11 decks24 decks
41%synergy
Copy Artifact
42%inclusion10 decks24 decks
41%synergy
The Meathook Massacre
38%inclusion9 decks24 decks
34%synergy
Steal Enchantment
38%inclusion9 decks24 decks
37%synergy
Chthonian Nightmare
33%inclusion8 decks24 decks
33%synergy
Static Prison
29%inclusion7 decks24 decks
29%synergy
Counterbalance
29%inclusion7 decks24 decks
27%synergy
Touch the Spirit Realm
29%inclusion7 decks24 decks
27%synergy
Trouble in Pairs
29%inclusion7 decks24 decks
24%synergy
Stillness in Motion
20%inclusion3 decks15 decks
20%synergy
Ghostly Prison
17%inclusion4 decks24 decks
-5%synergy
Mirrormade
17%inclusion4 decks24 decks
7%synergy
Cemetery Tampering
17%inclusion4 decks24 decks
16%synergy
Starfield of Nyx
17%inclusion4 decks24 decks
13%synergy
Bloodchief Ascension
17%inclusion4 decks24 decks
12%synergy
Darksteel Mutation
13%inclusion3 decks24 decks
6%synergy
Teval's Judgment
13%inclusion2 decks16 decks
12%synergy
Leyline of Anticipation
13%inclusion3 decks24 decks
8%synergy
Land Tax
13%inclusion3 decks24 decks
6%synergy
Secret Arcade // Dusty Parlor
13%inclusion3 decks24 decks
7%synergy
Propaganda
13%inclusion3 decks24 decks
-14%synergy
Chains of Mephistopheles
13%inclusion3 decks24 decks
12%synergy
Authority of the Consuls
8.3%inclusion2 decks24 decks
-3%synergy
Shark Typhoon
8.3%inclusion2 decks24 decks
2%synergy
Monologue Tax
8.3%inclusion2 decks24 decks
2%synergy
Enchanted Evening
8.3%inclusion2 decks24 decks
7%synergy
Aura of Silence
8.3%inclusion2 decks24 decks
5%synergy
Solemnity
8.3%inclusion2 decks24 decks
5%synergy
The Cruelty of Gix
8.3%inclusion2 decks24 decks
8%synergy
Out of the Tombs
8.3%inclusion2 decks24 decks
8%synergy
Mind Over Matter
8.3%inclusion2 decks24 decks
8%synergy
Phyrexian Unlife
8.3%inclusion2 decks24 decks
7%synergy
Exquisite Blood
8.3%inclusion2 decks24 decks
2%synergy
Greater Auramancy
8.3%inclusion2 decks24 decks
4%synergy
Founding the Third Path
8.3%inclusion2 decks24 decks
8%synergy
Estrid's Invocation
8.3%inclusion2 decks24 decks
4%synergy
Sphere of Safety
8.3%inclusion2 decks24 decks
-1%synergy
Hallowed Haunting
8.3%inclusion2 decks24 decks
6%synergy
Phyrexian Arena
8.3%inclusion2 decks24 decks
-6%synergy
Planeswalkers
Teferi, Time Raveler
54%inclusion13 decks24 decks
46%synergy
Utility Lands
Otawara, Soaring City
79%inclusion19 decks24 decks
60%synergy
Urza's Saga
46%inclusion11 decks24 decks
34%synergy
Serra's Sanctum
29%inclusion7 decks24 decks
27%synergy
Emergence Zone
29%inclusion7 decks24 decks
27%synergy
Hall of Heliod's Generosity
29%inclusion7 decks24 decks
16%synergy
Takenuma, Abandoned Mire
25%inclusion6 decks24 decks
18%synergy
Minamo, School at Water's Edge
25%inclusion6 decks24 decks
21%synergy
Cephalid Coliseum
17%inclusion4 decks24 decks
13%synergy
Uthros, Titanic Godcore
14%inclusion1 decks7 decks
11%synergy
Urborg, Tomb of Yawgmoth
13%inclusion3 decks24 decks
-1%synergy
Mistrise Village
6.3%inclusion1 decks16 decks
2%synergy
Mana Artifacts
Arcane Signet
100%inclusion24 decks24 decks
12%synergy
Sol Ring
92%inclusion22 decks24 decks
2%synergy
Lotus Petal
79%inclusion19 decks24 decks
68%synergy
Talisman of Dominance
75%inclusion18 decks24 decks
26%synergy
Lion's Eye Diamond
71%inclusion17 decks24 decks
69%synergy
Mox Opal
63%inclusion15 decks24 decks
54%synergy
Fellwar Stone
58%inclusion14 decks24 decks
24%synergy
Talisman of Hierarchy
46%inclusion11 decks24 decks
3%synergy
Talisman of Progress
42%inclusion10 decks24 decks
-1%synergy
Grim Monolith
38%inclusion9 decks24 decks
34%synergy
The Soul Stone
29%inclusion2 decks7 decks
26%synergy
Mox Amber
21%inclusion5 decks24 decks
15%synergy
Azorius Signet
8.3%inclusion2 decks24 decks
-24%synergy
Dimir Signet
8.3%inclusion2 decks24 decks
-25%synergy
Lands
Tundra
100%inclusion24 decks24 decks
84%synergy
Command Tower
100%inclusion24 decks24 decks
8%synergy
Scrubland
100%inclusion24 decks24 decks
84%synergy
Underground Sea
100%inclusion24 decks24 decks
84%synergy
Watery Grave
100%inclusion24 decks24 decks
50%synergy
Godless Shrine
96%inclusion23 decks24 decks
46%synergy
Marsh Flats
96%inclusion23 decks24 decks
60%synergy
Polluted Delta
96%inclusion23 decks24 decks
59%synergy
Hallowed Fountain
92%inclusion22 decks24 decks
43%synergy
Flooded Strand
92%inclusion22 decks24 decks
54%synergy
Bloodstained Mire
79%inclusion19 decks24 decks
68%synergy
Undercity Sewers
79%inclusion19 decks24 decks
65%synergy
Mana Confluence
75%inclusion18 decks24 decks
61%synergy
Gemstone Caverns
71%inclusion17 decks24 decks
63%synergy
Misty Rainforest
71%inclusion17 decks24 decks
59%synergy
Verdant Catacombs
71%inclusion17 decks24 decks
60%synergy
City of Brass
71%inclusion17 decks24 decks
56%synergy
Morphic Pool
67%inclusion16 decks24 decks
32%synergy
Windswept Heath
63%inclusion15 decks24 decks
53%synergy
Arid Mesa
63%inclusion15 decks24 decks
52%synergy
Vault of Champions
63%inclusion15 decks24 decks
30%synergy
Exotic Orchard
58%inclusion14 decks24 decks
0%synergy
Sea of Clouds
58%inclusion14 decks24 decks
22%synergy
Scalding Tarn
54%inclusion13 decks24 decks
43%synergy
Island
46%inclusion11 decks24 decks
-47%synergy
Meticulous Archive
42%inclusion10 decks24 decks
28%synergy
Shadowy Backstreet
42%inclusion10 decks24 decks
29%synergy
Swamp
38%inclusion9 decks24 decks
-54%synergy
Plains
33%inclusion8 decks24 decks
-58%synergy
Raffine's Tower
29%inclusion7 decks24 decks
-12%synergy
Sink into Stupor
21%inclusion5 decks24 decks
8%synergy
Forbidden Orchard
21%inclusion5 decks24 decks
18%synergy
Underground River
17%inclusion4 decks24 decks
-16%synergy
Spire of Industry
17%inclusion4 decks24 decks
8%synergy
Snow-Covered Swamp
17%inclusion4 decks24 decks
13%synergy
Caves of Koilos
13%inclusion3 decks24 decks
-23%synergy
Cavern of Souls
13%inclusion3 decks24 decks
6%synergy
Snow-Covered Plains
13%inclusion3 decks24 decks
9%synergy
Valgavoth's Lair
13%inclusion3 decks24 decks
10%synergy
Floodfarm Verge
13%inclusion3 decks24 decks
1%synergy
Bleachbone Verge
8.7%inclusion2 decks23 decks
0%synergy
Isolated Chapel
8.3%inclusion2 decks24 decks
-30%synergy
Adarkar Wastes
8.3%inclusion2 decks24 decks
-22%synergy
Glacial Fortress
8.3%inclusion2 decks24 decks
-31%synergy
Snow-Covered Island
8.3%inclusion2 decks24 decks
5%synergy
Reflecting Pool
8.3%inclusion2 decks24 decks
0%synergy
Arcane Sanctum
8.3%inclusion2 decks24 decks
-46%synergy
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