The Master of Keys (Commander) - Expensive Core

The Master of Keys
Rank #301
43decks
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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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Instants
Sorceries
Utility Artifacts
Enchantments
Battles
Planeswalkers
Utility Lands
Mana Artifacts
Lands
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Bilbo, Thief in the Night
33%inclusion1 decks3 decks
33%synergy
Emeritus of Truce
14%inclusion1 decks7 decks
13%synergy
Umbral Expanse
13%inclusion1 decks8 decks
12%synergy
Emeritus of Ideation
13%inclusion1 decks8 decks
11%synergy
Grave Researcher
13%inclusion1 decks8 decks
10%synergy
High Synergy Cards
Ripples of Undeath
74%inclusion32 decks43 decks
72%synergy
Entity Tracker
67%inclusion29 decks43 decks
61%synergy
Animate Dead
67%inclusion29 decks43 decks
58%synergy
Inquisitive Glimmer
65%inclusion28 decks43 decks
58%synergy
Gravebreaker Lamia
58%inclusion25 decks43 decks
57%synergy
Demon of Fate's Design
60%inclusion26 decks43 decks
55%synergy
Hall of Heliod's Generosity
67%inclusion29 decks43 decks
54%synergy
Grasp of Fate
60%inclusion26 decks43 decks
54%synergy
Necromancy
58%inclusion25 decks43 decks
54%synergy
Overlord of the Floodpits
56%inclusion24 decks43 decks
52%synergy
Top Cards
Mesa Enchantress
60%inclusion26 decks43 decks
52%synergy
Starfield of Nyx
53%inclusion23 decks43 decks
49%synergy
Overlord of the Balemurk
53%inclusion23 decks43 decks
52%synergy
Starfield Mystic
51%inclusion22 decks43 decks
45%synergy
Fear of Impostors
49%inclusion21 decks43 decks
47%synergy
Doomwake Giant
49%inclusion21 decks43 decks
43%synergy
Secret Arcade // Dusty Parlor
49%inclusion21 decks43 decks
44%synergy
Dress Down
49%inclusion21 decks43 decks
47%synergy
Cacophony Unleashed
47%inclusion20 decks43 decks
45%synergy
Mirrormade
47%inclusion20 decks43 decks
37%synergy
Game Changers
Notion Thief
7.0%inclusion3 decks43 decks
0%synergy
Creatures
Fear of Sleep Paralysis
47%inclusion20 decks43 decks
41%synergy
Scrabbling Skullcrab
44%inclusion19 decks43 decks
43%synergy
Zur, Eternal Schemer
44%inclusion19 decks43 decks
41%synergy
Ondu Spiritdancer
42%inclusion18 decks43 decks
36%synergy
Victor, Valgavoth's Seneschal
37%inclusion16 decks43 decks
35%synergy
Heliod, the Radiant Dawn
35%inclusion15 decks43 decks
31%synergy
Silent Hallcreeper
33%inclusion14 decks43 decks
28%synergy
Grim Guardian
33%inclusion14 decks43 decks
30%synergy
Enduring Curiosity
28%inclusion12 decks43 decks
20%synergy
Overlord of the Mistmoors
28%inclusion12 decks43 decks
26%synergy
Summon: Yojimbo
28%inclusion8 decks29 decks
27%synergy
Soaring Lightbringer
26%inclusion11 decks43 decks
21%synergy
Ghostly Dancers
26%inclusion11 decks43 decks
23%synergy
Zur the Enchanter
23%inclusion10 decks43 decks
18%synergy
Archon of Sun's Grace
21%inclusion9 decks43 decks
16%synergy
Lotho, Corrupt Shirriff
19%inclusion8 decks43 decks
2%synergy
Sage of Mysteries
19%inclusion8 decks43 decks
18%synergy
Moon-Blessed Cleric
19%inclusion8 decks43 decks
14%synergy
Witch Enchanter
16%inclusion7 decks43 decks
9%synergy
Skullsnap Nuisance
16%inclusion7 decks43 decks
16%synergy
Balemurk Leech
16%inclusion7 decks43 decks
16%synergy
Hedron Crab
14%inclusion6 decks43 decks
13%synergy
Esper Sentinel
14%inclusion6 decks43 decks
-13%synergy
Aminatou, Veil Piercer
14%inclusion6 decks43 decks
13%synergy
Grand Abolisher
14%inclusion6 decks43 decks
-1%synergy
Summon: Valefor
14%inclusion4 decks29 decks
13%synergy
Doom Whisperer
12%inclusion5 decks43 decks
10%synergy
Spirited Companion
12%inclusion5 decks43 decks
10%synergy
Abdel Adrian, Gorion's Ward
12%inclusion5 decks43 decks
10%synergy
Valgavoth, Terror Eater
12%inclusion5 decks43 decks
8%synergy
Alseid of Life's Bounty
12%inclusion5 decks43 decks
10%synergy
Mindwrack Harpy
12%inclusion5 decks43 decks
11%synergy
Sun Titan
12%inclusion5 decks43 decks
3%synergy
Summon: Knights of Round
10%inclusion3 decks29 decks
8%synergy
Metamorphosis Fanatic
9.3%inclusion4 decks43 decks
5%synergy
Boggart Trawler
9.3%inclusion4 decks43 decks
6%synergy
Athreos, Shroud-Veiled
9.3%inclusion4 decks43 decks
5%synergy
Archetype of Imagination
9.3%inclusion4 decks43 decks
5%synergy
Ancient Cellarspawn
9.3%inclusion4 decks43 decks
6%synergy
Auramancer
9.3%inclusion4 decks43 decks
6%synergy
Glasspool Mimic
9.3%inclusion4 decks43 decks
7%synergy
Millikin
9.3%inclusion4 decks43 decks
9%synergy
Astelli Reclaimer
8.7%inclusion2 decks23 decks
8%synergy
Twilight Diviner
7.7%inclusion1 decks13 decks
6%synergy
Eidolon of Astral Winds
7.3%inclusion3 decks41 decks
7%synergy
Deranged Assistant
7.0%inclusion3 decks43 decks
7%synergy
Ledger Shredder
7.0%inclusion3 decks43 decks
-2%synergy
Enduring Innocence
7.0%inclusion3 decks43 decks
5%synergy
Nashi, Searcher in the Dark
7.0%inclusion3 decks43 decks
6%synergy
Loran of the Third Path
7.0%inclusion3 decks43 decks
4%synergy
Instants
Swords to Plowshares
42%inclusion18 decks43 decks
-26%synergy
An Offer You Can't Refuse
30%inclusion13 decks43 decks
3%synergy
Entomb
30%inclusion13 decks43 decks
23%synergy
Counterspell
30%inclusion13 decks43 decks
-12%synergy
Swan Song
28%inclusion12 decks43 decks
8%synergy
Arcane Denial
26%inclusion11 decks43 decks
5%synergy
Path to Exile
26%inclusion11 decks43 decks
-17%synergy
Dark Ritual
21%inclusion9 decks43 decks
1%synergy
Frantic Search
16%inclusion7 decks43 decks
-2%synergy
Fell the Profane
14%inclusion6 decks43 decks
5%synergy
Dovin's Veto
14%inclusion6 decks43 decks
-12%synergy
Void Rend
14%inclusion6 decks43 decks
-21%synergy
Mana Drain
14%inclusion6 decks43 decks
-3%synergy
Dawn's Truce
12%inclusion5 decks43 decks
7%synergy
Inkshield
12%inclusion5 decks43 decks
2%synergy
Sink into Stupor
12%inclusion5 decks43 decks
-1%synergy
Brainstorm
9.3%inclusion4 decks43 decks
-8%synergy
Silence
9.3%inclusion4 decks43 decks
-1%synergy
Anguished Unmaking
9.3%inclusion4 decks43 decks
-16%synergy
Otherworldly Gaze
9.3%inclusion4 decks43 decks
7%synergy
Thought Scour
9.3%inclusion4 decks43 decks
8%synergy
Fact or Fiction
7.0%inclusion3 decks43 decks
3%synergy
Thirst for Meaning
7.0%inclusion3 decks43 decks
6%synergy
Slip Out the Back
7.0%inclusion3 decks43 decks
6%synergy
Generous Gift
7.0%inclusion3 decks43 decks
-7%synergy
Force of Negation
7.0%inclusion3 decks43 decks
-5%synergy
Sorceries
Sevinne's Reclamation
44%inclusion19 decks43 decks
35%synergy
Redress Fate
40%inclusion17 decks43 decks
34%synergy
Windfall
37%inclusion16 decks43 decks
24%synergy
Reanimate
33%inclusion14 decks43 decks
16%synergy
Dance of the Manse
23%inclusion10 decks43 decks
20%synergy
Toxic Deluge
21%inclusion9 decks43 decks
1%synergy
Replenish
19%inclusion8 decks43 decks
17%synergy
Damn
16%inclusion7 decks43 decks
-4%synergy
Idyllic Tutor
14%inclusion6 decks43 decks
10%synergy
Space-Time Anomaly
13%inclusion3 decks23 decks
11%synergy
Resurgent Belief
12%inclusion5 decks43 decks
10%synergy
Glimpse the Unthinkable
12%inclusion5 decks43 decks
11%synergy
Extinguish All Hope
12%inclusion5 decks43 decks
10%synergy
Traumatize
9.3%inclusion4 decks43 decks
9%synergy
Singularity Rupture
8.7%inclusion2 decks23 decks
6%synergy
Ponder
7.0%inclusion3 decks43 decks
-2%synergy
Supreme Verdict
7.0%inclusion3 decks43 decks
-8%synergy
Dread Return
7.0%inclusion3 decks43 decks
4%synergy
Open the Vaults
7.0%inclusion3 decks43 decks
6%synergy
Cut Your Losses
7.0%inclusion3 decks43 decks
7%synergy
Brilliant Restoration
7.0%inclusion3 decks43 decks
5%synergy
Approach of the Second Sun
7.0%inclusion3 decks43 decks
3%synergy
Stock Up
5.4%inclusion2 decks37 decks
3%synergy
Utility Artifacts
Mesmeric Orb
26%inclusion11 decks43 decks
24%synergy
Lightning Greaves
16%inclusion7 decks43 decks
-6%synergy
Cloud Key
14%inclusion6 decks43 decks
11%synergy
Whip of Erebos
9.3%inclusion4 decks43 decks
7%synergy
Swiftfoot Boots
7.0%inclusion3 decks43 decks
-17%synergy
Enchantments
Seal of Cleansing
47%inclusion20 decks43 decks
45%synergy
Mystic Remora
44%inclusion19 decks43 decks
24%synergy
Cemetery Tampering
44%inclusion19 decks43 decks
43%synergy
Propaganda
44%inclusion19 decks43 decks
16%synergy
Ghostly Prison
42%inclusion18 decks43 decks
19%synergy
Dance of the Dead
37%inclusion16 decks43 decks
35%synergy
Stillness in Motion
35%inclusion11 decks31 decks
35%synergy
Black Market Connections
35%inclusion15 decks43 decks
20%synergy
Estrid's Invocation
35%inclusion15 decks43 decks
30%synergy
Sphere of Safety
35%inclusion15 decks43 decks
26%synergy
Sigil of the Empty Throne
33%inclusion14 decks43 decks
27%synergy
Hallowed Haunting
33%inclusion14 decks43 decks
30%synergy
Amphibian Downpour
33%inclusion14 decks43 decks
28%synergy
Darksteel Mutation
30%inclusion13 decks43 decks
24%synergy
The Meathook Massacre
30%inclusion13 decks43 decks
27%synergy
Monologue Tax
30%inclusion13 decks43 decks
24%synergy
Blind Obedience
30%inclusion13 decks43 decks
18%synergy
Polluted Cistern // Dim Oubliette
30%inclusion13 decks43 decks
30%synergy
Sheltered by Ghosts
30%inclusion13 decks43 decks
28%synergy
Greater Auramancy
30%inclusion13 decks43 decks
26%synergy
Mirror Room // Fractured Realm
28%inclusion12 decks43 decks
26%synergy
Teval's Judgment
26%inclusion8 decks31 decks
25%synergy
Out of the Tombs
26%inclusion11 decks43 decks
25%synergy
Copy Enchantment
26%inclusion11 decks43 decks
21%synergy
Imprisoned in the Moon
21%inclusion9 decks43 decks
14%synergy
Shark Typhoon
21%inclusion9 decks43 decks
15%synergy
Aura of Silence
19%inclusion8 decks43 decks
15%synergy
Central Elevator // Promising Stairs
19%inclusion8 decks43 decks
18%synergy
Touch the Spirit Realm
16%inclusion7 decks43 decks
14%synergy
Defiled Crypt // Cadaver Lab
16%inclusion7 decks43 decks
16%synergy
Restricted Office // Lecture Hall
16%inclusion7 decks43 decks
14%synergy
Secrets of the Dead
16%inclusion7 decks43 decks
16%synergy
Phyrexian Arena
16%inclusion7 decks43 decks
2%synergy
Cramped Vents // Access Maze
14%inclusion6 decks43 decks
12%synergy
The Tale of Tamiyo
14%inclusion6 decks43 decks
14%synergy
Funeral Room // Awakening Hall
14%inclusion6 decks43 decks
13%synergy
Oubliette
14%inclusion6 decks43 decks
12%synergy
Solitary Confinement
14%inclusion6 decks43 decks
12%synergy
Trouble in Pairs
14%inclusion6 decks43 decks
9%synergy
Underwater Tunnel // Slimy Aquarium
12%inclusion5 decks43 decks
11%synergy
Extravagant Replication
12%inclusion5 decks43 decks
7%synergy
The Eldest Reborn
12%inclusion5 decks43 decks
9%synergy
Leyline of Anticipation
12%inclusion5 decks43 decks
7%synergy
All That Glitters
12%inclusion5 decks43 decks
3%synergy
Bottomless Pool // Locker Room
12%inclusion5 decks43 decks
10%synergy
Land Tax
12%inclusion5 decks43 decks
6%synergy
Nowhere to Run
12%inclusion5 decks43 decks
10%synergy
Seal of Removal
12%inclusion5 decks43 decks
11%synergy
Tempest Technique
10%inclusion3 decks31 decks
9%synergy
Glasswing Grace
9.3%inclusion4 decks43 decks
6%synergy
Battles
Invasion of Theros
9.3%inclusion4 decks43 decks
8%synergy
Planeswalkers
Jace, Wielder of Mysteries
7.0%inclusion3 decks43 decks
5%synergy
Utility Lands
Otawara, Soaring City
47%inclusion20 decks43 decks
27%synergy
Bojuka Bog
42%inclusion18 decks43 decks
15%synergy
Takenuma, Abandoned Mire
33%inclusion14 decks43 decks
26%synergy
Reliquary Tower
19%inclusion8 decks43 decks
-15%synergy
Urborg, Tomb of Yawgmoth
19%inclusion8 decks43 decks
6%synergy
Cephalid Coliseum
14%inclusion6 decks43 decks
10%synergy
Adagia, Windswept Bastion
13%inclusion3 decks23 decks
11%synergy
Halimar Depths
9.3%inclusion4 decks43 decks
5%synergy
Urza's Saga
9.3%inclusion4 decks43 decks
-2%synergy
Ghost Quarter
7.0%inclusion3 decks43 decks
6%synergy
Mana Artifacts
Arcane Signet
72%inclusion31 decks43 decks
-16%synergy
Sol Ring
67%inclusion29 decks43 decks
-22%synergy
Talisman of Dominance
47%inclusion20 decks43 decks
-3%synergy
Talisman of Hierarchy
42%inclusion18 decks43 decks
-2%synergy
Talisman of Progress
40%inclusion17 decks43 decks
-4%synergy
Fellwar Stone
26%inclusion11 decks43 decks
-8%synergy
Orzhov Signet
26%inclusion11 decks43 decks
-7%synergy
Azorius Signet
23%inclusion10 decks43 decks
-7%synergy
Dimir Signet
21%inclusion9 decks43 decks
-10%synergy
Lotus Petal
7.0%inclusion3 decks43 decks
-3%synergy
Mind Stone
7.0%inclusion3 decks43 decks
-5%synergy
Lands
Command Tower
98%inclusion42 decks43 decks
5%synergy
Plains
98%inclusion42 decks43 decks
6%synergy
Island
95%inclusion41 decks43 decks
2%synergy
Swamp
91%inclusion39 decks43 decks
-1%synergy
Polluted Delta
86%inclusion37 decks43 decks
48%synergy
Hallowed Fountain
86%inclusion37 decks43 decks
35%synergy
Flooded Strand
86%inclusion37 decks43 decks
48%synergy
Watery Grave
84%inclusion36 decks43 decks
33%synergy
Godless Shrine
81%inclusion35 decks43 decks
30%synergy
Marsh Flats
81%inclusion35 decks43 decks
45%synergy
Raffine's Tower
72%inclusion31 decks43 decks
31%synergy
Undercity Sewers
70%inclusion30 decks43 decks
55%synergy
Shadowy Backstreet
70%inclusion30 decks43 decks
57%synergy
Morphic Pool
67%inclusion29 decks43 decks
34%synergy
Meticulous Archive
67%inclusion29 decks43 decks
54%synergy
Sea of Clouds
65%inclusion28 decks43 decks
30%synergy
Vault of Champions
63%inclusion27 decks43 decks
30%synergy
Adarkar Wastes
49%inclusion21 decks43 decks
17%synergy
Exotic Orchard
44%inclusion19 decks43 decks
-15%synergy
Drowned Catacomb
44%inclusion19 decks43 decks
6%synergy
Caves of Koilos
42%inclusion18 decks43 decks
6%synergy
Isolated Chapel
42%inclusion18 decks43 decks
1%synergy
Underground River
42%inclusion18 decks43 decks
7%synergy
Glacial Fortress
40%inclusion17 decks43 decks
-3%synergy
Arcane Sanctum
35%inclusion15 decks43 decks
-19%synergy
Gloomlake Verge
35%inclusion15 decks43 decks
24%synergy
Valgavoth's Lair
33%inclusion14 decks43 decks
30%synergy
Tundra
30%inclusion13 decks43 decks
14%synergy
Shipwreck Marsh
30%inclusion13 decks43 decks
10%synergy
Scrubland
30%inclusion13 decks43 decks
14%synergy
Floodfarm Verge
30%inclusion13 decks43 decks
19%synergy
Bleachbone Verge
30%inclusion11 decks37 decks
21%synergy
Underground Sea
28%inclusion12 decks43 decks
12%synergy
Deserted Beach
28%inclusion12 decks43 decks
7%synergy
Bloodstained Mire
26%inclusion11 decks43 decks
15%synergy
Misty Rainforest
23%inclusion10 decks43 decks
13%synergy
Verdant Catacombs
23%inclusion10 decks43 decks
13%synergy
Windswept Heath
21%inclusion9 decks43 decks
11%synergy
Arid Mesa
21%inclusion9 decks43 decks
12%synergy
Scalding Tarn
21%inclusion9 decks43 decks
10%synergy
Sunken Hollow
21%inclusion9 decks43 decks
-19%synergy
Shattered Sanctum
19%inclusion8 decks43 decks
2%synergy
Witch Enchanter
16%inclusion7 decks43 decks
9%synergy
Azorius Chancery
16%inclusion7 decks43 decks
3%synergy
Prairie Stream
16%inclusion7 decks43 decks
-24%synergy
Dimir Aqueduct
16%inclusion7 decks43 decks
3%synergy
Prismatic Vista
14%inclusion6 decks43 decks
10%synergy
Fell the Profane
14%inclusion6 decks43 decks
5%synergy
Fabled Passage
14%inclusion6 decks43 decks
6%synergy
Orzhov Basilica
14%inclusion6 decks43 decks
-1%synergy
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