The Master of Keys (Commander) - Upgraded

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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Game Changers
Creatures
Instants
Sorceries
Utility Artifacts
Enchantments
Battles
Utility Lands
Mana Artifacts
Lands
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Chakra Meditation
3.2%inclusion3 decks93 decks
3%synergy
The Legend of Yangchen
2.0%inclusion2 decks101 decks
2%synergy
Abandoned Air Temple
1.1%inclusion1 decks91 decks
0%synergy
Agna Qel'a
1.1%inclusion1 decks93 decks
0%synergy
Serpent's Pass
1.0%inclusion1 decks96 decks
1%synergy
High Synergy Cards
Inquisitive Glimmer
78%inclusion311 decks401 decks
70%synergy
Ripples of Undeath
72%inclusion290 decks401 decks
70%synergy
Entity Tracker
71%inclusion284 decks401 decks
64%synergy
Starfield Mystic
66%inclusion266 decks401 decks
60%synergy
Gravebreaker Lamia
59%inclusion238 decks401 decks
58%synergy
Mesa Enchantress
67%inclusion268 decks401 decks
58%synergy
Animate Dead
67%inclusion269 decks401 decks
57%synergy
Demon of Fate's Design
59%inclusion237 decks401 decks
54%synergy
Dress Down
56%inclusion224 decks401 decks
53%synergy
Scrabbling Skullcrab
54%inclusion215 decks401 decks
53%synergy
Top Cards
Fear of Sleep Paralysis
58%inclusion231 decks401 decks
52%synergy
Doomwake Giant
54%inclusion218 decks401 decks
48%synergy
Mystic Remora
53%inclusion214 decks401 decks
32%synergy
Necromancy
52%inclusion207 decks401 decks
47%synergy
Sphere of Safety
52%inclusion207 decks401 decks
42%synergy
Swords to Plowshares
51%inclusion205 decks401 decks
-17%synergy
Overlord of the Floodpits
51%inclusion205 decks401 decks
47%synergy
Secret Arcade // Dusty Parlor
51%inclusion203 decks401 decks
45%synergy
Mirrormade
49%inclusion196 decks401 decks
39%synergy
Overlord of the Balemurk
48%inclusion191 decks401 decks
46%synergy
Game Changers
Smothering Tithe
40%inclusion159 decks401 decks
7%synergy
Rhystic Study
29%inclusion117 decks401 decks
-3%synergy
Enlightened Tutor
12%inclusion48 decks401 decks
-8%synergy
Gifts Ungiven
9.5%inclusion38 decks401 decks
7%synergy
Necropotence
8.0%inclusion32 decks401 decks
1%synergy
Serra's Sanctum
6.5%inclusion26 decks401 decks
5%synergy
Cyclonic Rift
6.5%inclusion26 decks401 decks
-18%synergy
Demonic Tutor
5.5%inclusion22 decks401 decks
-16%synergy
Teferi's Protection
5.2%inclusion21 decks401 decks
-12%synergy
Creatures
Victor, Valgavoth's Seneschal
47%inclusion189 decks401 decks
45%synergy
Ondu Spiritdancer
46%inclusion183 decks401 decks
39%synergy
Fear of Impostors
46%inclusion183 decks401 decks
44%synergy
Zur, Eternal Schemer
45%inclusion179 decks401 decks
41%synergy
Silent Hallcreeper
33%inclusion134 decks401 decks
29%synergy
Zur the Enchanter
33%inclusion131 decks401 decks
27%synergy
Ghostly Dancers
31%inclusion124 decks401 decks
28%synergy
Enduring Curiosity
27%inclusion108 decks401 decks
19%synergy
Heliod, the Radiant Dawn
26%inclusion105 decks401 decks
22%synergy
Moon-Blessed Cleric
25%inclusion99 decks401 decks
20%synergy
Grim Guardian
24%inclusion95 decks401 decks
21%synergy
Soaring Lightbringer
24%inclusion95 decks401 decks
19%synergy
Archon of Sun's Grace
22%inclusion90 decks401 decks
18%synergy
Abdel Adrian, Gorion's Ward
20%inclusion80 decks401 decks
18%synergy
Sage of Mysteries
17%inclusion69 decks401 decks
17%synergy
Mindwrack Harpy
17%inclusion67 decks401 decks
16%synergy
Overlord of the Mistmoors
16%inclusion66 decks401 decks
14%synergy
Aminatou, Veil Piercer
16%inclusion65 decks401 decks
15%synergy
Archetype of Imagination
16%inclusion63 decks401 decks
11%synergy
Alseid of Life's Bounty
14%inclusion58 decks401 decks
13%synergy
Athreos, Shroud-Veiled
13%inclusion54 decks401 decks
9%synergy
Lotho, Corrupt Shirriff
13%inclusion52 decks401 decks
-4%synergy
Balemurk Leech
13%inclusion52 decks401 decks
12%synergy
Ancient Cellarspawn
13%inclusion51 decks401 decks
9%synergy
Hullbreaker Horror
12%inclusion49 decks401 decks
6%synergy
Hedron Crab
11%inclusion46 decks401 decks
11%synergy
Sun Titan
11%inclusion43 decks401 decks
2%synergy
Skullsnap Nuisance
11%inclusion43 decks401 decks
10%synergy
Ledger Shredder
10%inclusion41 decks401 decks
1%synergy
Witch Enchanter
10%inclusion39 decks401 decks
3%synergy
Lurrus of the Dream-Den
10%inclusion39 decks401 decks
8%synergy
Nashi, Searcher in the Dark
10%inclusion39 decks401 decks
9%synergy
Gremlin Tamer
9.5%inclusion38 decks401 decks
8%synergy
Esper Sentinel
9.2%inclusion37 decks401 decks
-19%synergy
Solemn Simulacrum
8.2%inclusion33 decks401 decks
-7%synergy
Spirited Companion
8.0%inclusion32 decks401 decks
6%synergy
Valgavoth, Terror Eater
7.2%inclusion29 decks401 decks
4%synergy
Nightmare Shepherd
7.0%inclusion28 decks401 decks
4%synergy
Fear of Infinity
6.7%inclusion27 decks401 decks
6%synergy
Grand Abolisher
6.7%inclusion27 decks401 decks
-8%synergy
Valley Floodcaller
6.7%inclusion27 decks401 decks
2%synergy
Auramancer
6.7%inclusion27 decks401 decks
4%synergy
Enduring Tenacity
6.5%inclusion26 decks401 decks
-1%synergy
Summon: Yojimbo
6.5%inclusion18 decks279 decks
5%synergy
Metamorphosis Fanatic
6.2%inclusion25 decks401 decks
1%synergy
Stenn, Paranoid Partisan
6.0%inclusion24 decks401 decks
4%synergy
Starnheim Courser
5.7%inclusion23 decks401 decks
2%synergy
Laboratory Maniac
5.7%inclusion23 decks401 decks
2%synergy
Neerdiv, Devious Diver
5.5%inclusion22 decks399 decks
5%synergy
Emet-Selch of the Third Seat
5.3%inclusion15 decks282 decks
-5%synergy
Instants
Arcane Denial
35%inclusion140 decks401 decks
15%synergy
Counterspell
34%inclusion135 decks401 decks
-7%synergy
An Offer You Can't Refuse
29%inclusion117 decks401 decks
3%synergy
Path to Exile
26%inclusion105 decks401 decks
-16%synergy
Dark Ritual
26%inclusion104 decks401 decks
7%synergy
Entomb
25%inclusion101 decks401 decks
18%synergy
Void Rend
19%inclusion77 decks401 decks
-14%synergy
Inkshield
17%inclusion67 decks401 decks
8%synergy
Thirst for Meaning
16%inclusion65 decks401 decks
15%synergy
Dovin's Veto
16%inclusion63 decks401 decks
-9%synergy
Swan Song
16%inclusion63 decks401 decks
-4%synergy
Frantic Search
15%inclusion62 decks401 decks
-1%synergy
Sink into Stupor
15%inclusion61 decks401 decks
3%synergy
Negate
13%inclusion53 decks401 decks
-3%synergy
Otherworldly Gaze
13%inclusion52 decks401 decks
11%synergy
Fell the Profane
12%inclusion50 decks401 decks
4%synergy
Mana Drain
11%inclusion46 decks401 decks
-6%synergy
Brainstorm
10%inclusion42 decks401 decks
-7%synergy
Anguished Unmaking
9.5%inclusion38 decks401 decks
-15%synergy
Faithful Mending
6.5%inclusion26 decks401 decks
3%synergy
Fact or Fiction
6.2%inclusion25 decks401 decks
2%synergy
Utter End
6.0%inclusion24 decks401 decks
-1%synergy
Generous Gift
6.0%inclusion24 decks401 decks
-9%synergy
Waterlogged Teachings
5.2%inclusion21 decks401 decks
1%synergy
Return to Dust
5.2%inclusion21 decks401 decks
1%synergy
Sorceries
Sevinne's Reclamation
47%inclusion187 decks401 decks
38%synergy
Redress Fate
36%inclusion145 decks401 decks
30%synergy
Windfall
25%inclusion102 decks401 decks
12%synergy
Singularity Rupture
23%inclusion53 decks233 decks
20%synergy
Reanimate
22%inclusion89 decks401 decks
6%synergy
Extinguish All Hope
20%inclusion79 decks401 decks
18%synergy
Dance of the Manse
19%inclusion76 decks401 decks
15%synergy
Time Wipe
16%inclusion64 decks401 decks
9%synergy
Damn
15%inclusion61 decks401 decks
-5%synergy
Idyllic Tutor
15%inclusion60 decks401 decks
11%synergy
Toxic Deluge
15%inclusion59 decks401 decks
-5%synergy
Glimpse the Unthinkable
14%inclusion55 decks401 decks
13%synergy
Supreme Verdict
11%inclusion45 decks401 decks
-4%synergy
Resurgent Belief
11%inclusion44 decks401 decks
9%synergy
Demonic Counsel
11%inclusion44 decks401 decks
10%synergy
Space-Time Anomaly
10%inclusion23 decks227 decks
8%synergy
Buried Alive
9.5%inclusion38 decks401 decks
5%synergy
Replenish
8.5%inclusion34 decks401 decks
7%synergy
Farewell
7.7%inclusion31 decks401 decks
-5%synergy
Unmarked Grave
7.7%inclusion31 decks401 decks
6%synergy
Ponder
6.7%inclusion27 decks401 decks
-3%synergy
Lively Dirge
5.7%inclusion23 decks401 decks
4%synergy
Traumatize
5.7%inclusion23 decks401 decks
5%synergy
Utility Artifacts
Mesmeric Orb
19%inclusion75 decks401 decks
18%synergy
Cloud Key
12%inclusion50 decks401 decks
9%synergy
Lightning Greaves
8.7%inclusion35 decks401 decks
-14%synergy
Wayfarer's Bauble
8.0%inclusion32 decks401 decks
0%synergy
Swiftfoot Boots
5.7%inclusion23 decks401 decks
-18%synergy
Crucible of Worlds
5.2%inclusion21 decks401 decks
4%synergy
Keys to the House
5.2%inclusion21 decks401 decks
5%synergy
Enchantments
Amphibian Downpour
46%inclusion184 decks401 decks
41%synergy
Propaganda
45%inclusion182 decks401 decks
19%synergy
Grasp of Fate
43%inclusion173 decks401 decks
37%synergy
Seal of Cleansing
42%inclusion168 decks401 decks
40%synergy
Cemetery Tampering
41%inclusion166 decks401 decks
41%synergy
Sigil of the Empty Throne
40%inclusion160 decks401 decks
34%synergy
Ghostly Prison
37%inclusion147 decks401 decks
15%synergy
Estrid's Invocation
36%inclusion143 decks401 decks
31%synergy
Blind Obedience
34%inclusion138 decks401 decks
22%synergy
Cacophony Unleashed
32%inclusion130 decks401 decks
31%synergy
Starfield of Nyx
32%inclusion129 decks401 decks
28%synergy
Monologue Tax
29%inclusion117 decks401 decks
23%synergy
Dance of the Dead
28%inclusion111 decks401 decks
25%synergy
The Tale of Tamiyo
27%inclusion109 decks401 decks
27%synergy
Stillness in Motion
25%inclusion83 decks337 decks
24%synergy
Darksteel Mutation
24%inclusion97 decks401 decks
18%synergy
Phyrexian Arena
23%inclusion94 decks401 decks
9%synergy
The Meathook Massacre
23%inclusion92 decks401 decks
19%synergy
Defiled Crypt // Cadaver Lab
23%inclusion92 decks401 decks
22%synergy
Seal of Removal
23%inclusion91 decks401 decks
22%synergy
Polluted Cistern // Dim Oubliette
22%inclusion87 decks401 decks
21%synergy
Timely Ward
21%inclusion85 decks401 decks
16%synergy
Extravagant Replication
21%inclusion85 decks401 decks
16%synergy
Shark Typhoon
21%inclusion83 decks401 decks
15%synergy
Black Market Connections
20%inclusion82 decks401 decks
7%synergy
Out of the Tombs
20%inclusion81 decks401 decks
20%synergy
All That Glitters
20%inclusion81 decks401 decks
11%synergy
Sheltered by Ghosts
20%inclusion79 decks401 decks
17%synergy
Greater Auramancy
19%inclusion76 decks401 decks
14%synergy
Ethereal Armor
19%inclusion75 decks401 decks
14%synergy
Copy Enchantment
18%inclusion74 decks401 decks
14%synergy
Imprisoned in the Moon
18%inclusion71 decks401 decks
11%synergy
Touch the Spirit Realm
17%inclusion70 decks401 decks
15%synergy
Hallowed Haunting
16%inclusion65 decks401 decks
14%synergy
The Eldest Reborn
16%inclusion65 decks401 decks
14%synergy
Mirror Room // Fractured Realm
16%inclusion65 decks401 decks
14%synergy
Authority of the Consuls
16%inclusion65 decks401 decks
5%synergy
Restricted Office // Lecture Hall
16%inclusion64 decks401 decks
14%synergy
Bottomless Pool // Locker Room
16%inclusion64 decks401 decks
14%synergy
Static Prison
15%inclusion61 decks401 decks
15%synergy
Leyline of Anticipation
15%inclusion61 decks401 decks
11%synergy
Secrets of the Dead
15%inclusion59 decks401 decks
14%synergy
Central Elevator // Promising Stairs
14%inclusion57 decks401 decks
14%synergy
One with the Multiverse
13%inclusion54 decks401 decks
9%synergy
Nowhere to Run
13%inclusion53 decks401 decks
12%synergy
Court of Cunning
13%inclusion53 decks401 decks
12%synergy
Teval's Judgment
13%inclusion45 decks343 decks
12%synergy
Cramped Vents // Access Maze
13%inclusion52 decks401 decks
10%synergy
Oubliette
12%inclusion50 decks401 decks
11%synergy
Land Tax
12%inclusion49 decks401 decks
6%synergy
Battles
Invasion of Theros
9.5%inclusion38 decks401 decks
8%synergy
Utility Lands
Hall of Heliod's Generosity
66%inclusion263 decks401 decks
52%synergy
Bojuka Bog
42%inclusion168 decks401 decks
15%synergy
Cephalid Coliseum
19%inclusion78 decks401 decks
16%synergy
Otawara, Soaring City
17%inclusion70 decks401 decks
-2%synergy
Takenuma, Abandoned Mire
16%inclusion66 decks401 decks
10%synergy
Reliquary Tower
12%inclusion49 decks401 decks
-21%synergy
Halimar Depths
10%inclusion41 decks401 decks
5%synergy
Urborg, Tomb of Yawgmoth
8.7%inclusion35 decks401 decks
-5%synergy
Urza's Saga
5.5%inclusion22 decks401 decks
-6%synergy
Nephalia Drownyard
5.2%inclusion21 decks401 decks
5%synergy
Adagia, Windswept Bastion
5.2%inclusion12 decks233 decks
3%synergy
Mana Artifacts
Arcane Signet
88%inclusion354 decks401 decks
0%synergy
Sol Ring
88%inclusion353 decks401 decks
-2%synergy
Talisman of Progress
51%inclusion204 decks401 decks
8%synergy
Talisman of Dominance
50%inclusion201 decks401 decks
1%synergy
Talisman of Hierarchy
47%inclusion187 decks401 decks
4%synergy
Orzhov Signet
40%inclusion160 decks401 decks
5%synergy
Azorius Signet
40%inclusion159 decks401 decks
7%synergy
Fellwar Stone
32%inclusion127 decks401 decks
-2%synergy
Dimir Signet
27%inclusion107 decks401 decks
-6%synergy
Mind Stone
15%inclusion62 decks401 decks
2%synergy
Commander's Sphere
13%inclusion52 decks401 decks
-7%synergy
Chromatic Lantern
7.2%inclusion29 decks401 decks
-6%synergy
Lands
Island
97%inclusion387 decks401 decks
4%synergy
Plains
96%inclusion386 decks401 decks
5%synergy
Swamp
96%inclusion385 decks401 decks
5%synergy
Command Tower
95%inclusion382 decks401 decks
3%synergy
Caves of Koilos
62%inclusion250 decks401 decks
27%synergy
Arcane Sanctum
60%inclusion241 decks401 decks
6%synergy
Adarkar Wastes
58%inclusion233 decks401 decks
28%synergy
Underground River
53%inclusion214 decks401 decks
21%synergy
Exotic Orchard
51%inclusion206 decks401 decks
-7%synergy
Godless Shrine
51%inclusion205 decks401 decks
1%synergy
Watery Grave
51%inclusion203 decks401 decks
1%synergy
Hallowed Fountain
48%inclusion194 decks401 decks
-1%synergy
Flooded Strand
45%inclusion179 decks401 decks
7%synergy
Raffine's Tower
44%inclusion175 decks401 decks
3%synergy
Polluted Delta
43%inclusion173 decks401 decks
6%synergy
Isolated Chapel
39%inclusion157 decks401 decks
1%synergy
Glacial Fortress
39%inclusion156 decks401 decks
0%synergy
Marsh Flats
37%inclusion150 decks401 decks
1%synergy
Prairie Stream
34%inclusion135 decks401 decks
-7%synergy
Valgavoth's Lair
33%inclusion134 decks401 decks
30%synergy
Sunken Hollow
33%inclusion132 decks401 decks
-7%synergy
Meticulous Archive
32%inclusion129 decks401 decks
19%synergy
Drowned Catacomb
32%inclusion127 decks401 decks
-3%synergy
Sea of Clouds
31%inclusion126 decks401 decks
-4%synergy
Undercity Sewers
31%inclusion123 decks401 decks
17%synergy
Shadowy Backstreet
30%inclusion122 decks401 decks
18%synergy
Vault of Champions
30%inclusion122 decks401 decks
-2%synergy
Morphic Pool
27%inclusion110 decks401 decks
-7%synergy
Temple of Silence
27%inclusion110 decks401 decks
8%synergy
Temple of Enlightenment
27%inclusion109 decks401 decks
10%synergy
Azorius Chancery
26%inclusion106 decks401 decks
12%synergy
Terramorphic Expanse
26%inclusion103 decks401 decks
9%synergy
Floodfarm Verge
26%inclusion103 decks401 decks
15%synergy
Temple of Deceit
25%inclusion100 decks401 decks
7%synergy
Deserted Beach
24%inclusion98 decks401 decks
4%synergy
Tainted Field
24%inclusion97 decks401 decks
17%synergy
Evolving Wilds
24%inclusion96 decks401 decks
-1%synergy
Obscura Storefront
24%inclusion96 decks401 decks
13%synergy
Orzhov Basilica
23%inclusion94 decks401 decks
7%synergy
Gloomlake Verge
23%inclusion91 decks401 decks
12%synergy
Dimir Aqueduct
22%inclusion90 decks401 decks
8%synergy
Contaminated Landscape
22%inclusion89 decks401 decks
8%synergy
Tainted Isle
21%inclusion86 decks401 decks
15%synergy
Shipwreck Marsh
21%inclusion84 decks401 decks
0%synergy
Shattered Sanctum
17%inclusion69 decks401 decks
1%synergy
Ash Barrens
16%inclusion63 decks401 decks
5%synergy
Sink into Stupor
15%inclusion61 decks401 decks
3%synergy
Path of Ancestry
15%inclusion59 decks401 decks
-13%synergy
Skycloud Expanse
13%inclusion52 decks401 decks
-2%synergy
Darkwater Catacombs
13%inclusion52 decks401 decks
-1%synergy
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