The Master of Keys (Commander) - Expensive Combo

The Master of Keys
Rank #315
20decks
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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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Instants
Sorceries
Utility Artifacts
Enchantments
Planeswalkers
Utility Lands
Mana Artifacts
Lands
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Wan Shi Tong, Librarian
100%inclusion1 decks1 decks
95%synergy
High Synergy Cards
Entomb
100%inclusion20 decks20 decks
93%synergy
Dress Down
95%inclusion19 decks20 decks
92%synergy
Necromancy
95%inclusion19 decks20 decks
90%synergy
Abdel Adrian, Gorion's Ward
90%inclusion18 decks20 decks
88%synergy
Mindbreak Trap
95%inclusion19 decks20 decks
88%synergy
Mental Misstep
95%inclusion19 decks20 decks
88%synergy
Flusterstorm
95%inclusion19 decks20 decks
87%synergy
Animate Dead
95%inclusion19 decks20 decks
85%synergy
Silence
95%inclusion19 decks20 decks
85%synergy
Dance of the Dead
85%inclusion17 decks20 decks
83%synergy
Top Cards
Dark Ritual
95%inclusion19 decks20 decks
76%synergy
Esper Sentinel
95%inclusion19 decks20 decks
67%synergy
Mystic Remora
95%inclusion19 decks20 decks
73%synergy
Smothering Tithe
90%inclusion18 decks20 decks
58%synergy
Tainted Pact
90%inclusion18 decks20 decks
82%synergy
Rhystic Study
90%inclusion18 decks20 decks
57%synergy
Demonic Consultation
90%inclusion18 decks20 decks
82%synergy
Force of Negation
90%inclusion18 decks20 decks
78%synergy
Orcish Bowmasters
90%inclusion18 decks20 decks
79%synergy
Lotho, Corrupt Shirriff
85%inclusion17 decks20 decks
68%synergy
Game Changers
Ancient Tomb
100%inclusion20 decks20 decks
87%synergy
Intuition
100%inclusion20 decks20 decks
98%synergy
Demonic Tutor
100%inclusion20 decks20 decks
78%synergy
Force of Will
100%inclusion20 decks20 decks
87%synergy
Thassa's Oracle
95%inclusion19 decks20 decks
85%synergy
Mana Vault
95%inclusion19 decks20 decks
85%synergy
Enlightened Tutor
95%inclusion19 decks20 decks
75%synergy
Chrome Mox
95%inclusion19 decks20 decks
85%synergy
Vampiric Tutor
95%inclusion19 decks20 decks
77%synergy
Mox Diamond
95%inclusion19 decks20 decks
88%synergy
Creatures
Grand Abolisher
85%inclusion17 decks20 decks
71%synergy
Ranger-Captain of Eos
85%inclusion17 decks20 decks
78%synergy
Valley Floodcaller
80%inclusion16 decks20 decks
76%synergy
Archivist of Oghma
65%inclusion13 decks20 decks
58%synergy
Voice of Victory
56%inclusion5 decks9 decks
47%synergy
Opposition Agent
55%inclusion11 decks20 decks
46%synergy
Hullbreaker Horror
55%inclusion11 decks20 decks
49%synergy
Mockingbird
50%inclusion10 decks20 decks
46%synergy
Displacer Kitten
45%inclusion9 decks20 decks
38%synergy
Phyrexian Metamorph
45%inclusion9 decks20 decks
36%synergy
Lurrus of the Dream-Den
45%inclusion9 decks20 decks
43%synergy
Auriok Salvagers
45%inclusion9 decks20 decks
45%synergy
Tataru Taru
38%inclusion3 decks8 decks
29%synergy
Hedron Crab
35%inclusion7 decks20 decks
34%synergy
Drannith Magistrate
30%inclusion6 decks20 decks
22%synergy
Ledger Shredder
30%inclusion6 decks20 decks
21%synergy
Ghostly Pilferer
30%inclusion6 decks20 decks
23%synergy
Faerie Mastermind
25%inclusion5 decks20 decks
16%synergy
Snapcaster Mage
15%inclusion3 decks20 decks
13%synergy
Leonin Relic-Warder
15%inclusion3 decks20 decks
15%synergy
Pollywog Prodigy
15%inclusion3 decks20 decks
11%synergy
Psychic Frog
15%inclusion3 decks20 decks
8%synergy
Emet-Selch of the Third Seat
13%inclusion1 decks8 decks
3%synergy
Volatile Stormdrake
10%inclusion2 decks20 decks
9%synergy
Overlord of the Balemurk
10%inclusion2 decks20 decks
8%synergy
Gilded Drake
10%inclusion2 decks20 decks
8%synergy
Talion, the Kindly Lord
10%inclusion2 decks20 decks
2%synergy
Academy Rector
10%inclusion2 decks20 decks
9%synergy
High Fae Trickster
6.7%inclusion1 decks15 decks
2%synergy
Neerdiv, Devious Diver
6.7%inclusion1 decks15 decks
7%synergy
Flesh Duplicate
5.0%inclusion1 decks20 decks
4%synergy
Hoarding Broodlord
5.0%inclusion1 decks20 decks
3%synergy
Starfield Mystic
5.0%inclusion1 decks20 decks
-2%synergy
Consecrated Sphinx
5.0%inclusion1 decks20 decks
-1%synergy
Felidar Guardian
5.0%inclusion1 decks20 decks
3%synergy
Cephalid Illusionist
5.0%inclusion1 decks20 decks
5%synergy
Spellseeker
5.0%inclusion1 decks20 decks
4%synergy
Ruthless Technomancer
5.0%inclusion1 decks20 decks
5%synergy
Malevolent Hermit
5.0%inclusion1 decks20 decks
4%synergy
Fear of Impostors
5.0%inclusion1 decks20 decks
3%synergy
Sage of Mysteries
5.0%inclusion1 decks20 decks
5%synergy
Drana and Linvala
5.0%inclusion1 decks20 decks
3%synergy
Flux Channeler
5.0%inclusion1 decks20 decks
5%synergy
Moon-Blessed Cleric
5.0%inclusion1 decks20 decks
0%synergy
Archaeomancer
5.0%inclusion1 decks20 decks
3%synergy
Tameshi, Reality Architect
5.0%inclusion1 decks20 decks
4%synergy
Nomads en-Kor
5.0%inclusion1 decks20 decks
5%synergy
Auramancer
5.0%inclusion1 decks20 decks
2%synergy
Phantasmal Image
5.0%inclusion1 decks20 decks
2%synergy
Grim Guardian
5.0%inclusion1 decks20 decks
2%synergy
Instants
Swan Song
85%inclusion17 decks20 decks
66%synergy
Pact of Negation
85%inclusion17 decks20 decks
77%synergy
Borne Upon a Wind
65%inclusion13 decks20 decks
60%synergy
Cabal Ritual
60%inclusion12 decks20 decks
57%synergy
Swords to Plowshares
60%inclusion12 decks20 decks
-8%synergy
Fierce Guardianship
60%inclusion12 decks20 decks
39%synergy
Mystical Tutor
60%inclusion12 decks20 decks
48%synergy
Cyclonic Rift
50%inclusion10 decks20 decks
25%synergy
Chain of Vapor
40%inclusion8 decks20 decks
36%synergy
An Offer You Can't Refuse
40%inclusion8 decks20 decks
14%synergy
Gifts Ungiven
40%inclusion8 decks20 decks
38%synergy
Darkblast
35%inclusion7 decks20 decks
35%synergy
Mana Drain
30%inclusion6 decks20 decks
12%synergy
Retraction Helix
25%inclusion5 decks20 decks
24%synergy
Brain Freeze
25%inclusion5 decks20 decks
24%synergy
Banishing Knack
25%inclusion5 decks20 decks
25%synergy
Into the Flood Maw
20%inclusion4 decks20 decks
16%synergy
Culling the Weak
15%inclusion3 decks20 decks
13%synergy
Path to Exile
15%inclusion3 decks20 decks
-27%synergy
Sacrifice
10%inclusion2 decks20 decks
9%synergy
Dispel
10%inclusion2 decks20 decks
6%synergy
Strix Serenade
10%inclusion2 decks20 decks
6%synergy
Ad Nauseam
10%inclusion2 decks20 decks
8%synergy
Sink into Stupor
10%inclusion2 decks20 decks
-2%synergy
Muddle the Mixture
5.0%inclusion1 decks20 decks
1%synergy
Argivian Find
5.0%inclusion1 decks20 decks
5%synergy
Ephemerate
5.0%inclusion1 decks20 decks
1%synergy
Dovin's Veto
5.0%inclusion1 decks20 decks
-20%synergy
Orim's Chant
5.0%inclusion1 decks20 decks
4%synergy
Brainstorm
5.0%inclusion1 decks20 decks
-12%synergy
Spell Snare
5.0%inclusion1 decks20 decks
5%synergy
Lim-Dûl's Vault
5.0%inclusion1 decks20 decks
1%synergy
Thirst for Meaning
5.0%inclusion1 decks20 decks
3%synergy
Rain of Filth
5.0%inclusion1 decks20 decks
5%synergy
Arcane Denial
5.0%inclusion1 decks20 decks
-15%synergy
Stifle
5.0%inclusion1 decks20 decks
4%synergy
Dramatic Reversal
5.0%inclusion1 decks20 decks
3%synergy
March of Swirling Mist
5.0%inclusion1 decks20 decks
4%synergy
Miscast
5.0%inclusion1 decks20 decks
4%synergy
Saw in Half
5.0%inclusion1 decks20 decks
3%synergy
Dig Through Time
5.0%inclusion1 decks20 decks
0%synergy
Sorceries
Imperial Seal
85%inclusion17 decks20 decks
77%synergy
Sevinne's Reclamation
70%inclusion14 decks20 decks
61%synergy
Reanimate
50%inclusion10 decks20 decks
34%synergy
Lively Dirge
45%inclusion9 decks20 decks
44%synergy
Demonic Counsel
30%inclusion6 decks20 decks
29%synergy
Windfall
20%inclusion4 decks20 decks
6%synergy
Yawgmoth's Will
20%inclusion4 decks20 decks
19%synergy
Mnemonic Betrayal
20%inclusion4 decks20 decks
17%synergy
Toxic Deluge
20%inclusion4 decks20 decks
1%synergy
Beseech the Mirror
20%inclusion4 decks20 decks
16%synergy
Unmarked Grave
15%inclusion3 decks20 decks
14%synergy
Timetwister
15%inclusion3 decks20 decks
14%synergy
Cabal Therapy
10%inclusion2 decks20 decks
10%synergy
Diabolic Intent
10%inclusion2 decks20 decks
5%synergy
Resurgent Belief
5.0%inclusion1 decks20 decks
3%synergy
Gitaxian Probe
5.0%inclusion1 decks20 decks
3%synergy
Split Up
5.0%inclusion1 decks20 decks
4%synergy
Careful Study
5.0%inclusion1 decks20 decks
3%synergy
Terminus
5.0%inclusion1 decks20 decks
1%synergy
Replenish
5.0%inclusion1 decks20 decks
3%synergy
Idyllic Tutor
5.0%inclusion1 decks20 decks
1%synergy
Treasure Cruise
5.0%inclusion1 decks20 decks
2%synergy
Vindicate
5.0%inclusion1 decks20 decks
-5%synergy
Lórien Revealed
5.0%inclusion1 decks20 decks
3%synergy
Praetor's Grasp
5.0%inclusion1 decks20 decks
2%synergy
Dark Petition
5.0%inclusion1 decks20 decks
5%synergy
Buried Alive
5.0%inclusion1 decks20 decks
1%synergy
Dark Deal
5.0%inclusion1 decks20 decks
4%synergy
Transmute Artifact
5.0%inclusion1 decks20 decks
3%synergy
Redress Fate
5.0%inclusion1 decks20 decks
-1%synergy
Dance of the Manse
5.0%inclusion1 decks20 decks
1%synergy
Utility Artifacts
The One Ring
75%inclusion15 decks20 decks
61%synergy
Wishclaw Talisman
75%inclusion15 decks20 decks
67%synergy
Vexing Bauble
20%inclusion4 decks20 decks
18%synergy
Agatha's Soul Cauldron
15%inclusion3 decks20 decks
14%synergy
Sphere of Resistance
5.0%inclusion1 decks20 decks
5%synergy
Sensei's Divining Top
5.0%inclusion1 decks20 decks
-5%synergy
Crucible of Worlds
5.0%inclusion1 decks20 decks
4%synergy
Cursed Totem
5.0%inclusion1 decks20 decks
3%synergy
Altar of the Brood
5.0%inclusion1 decks20 decks
4%synergy
Isochron Scepter
5.0%inclusion1 decks20 decks
3%synergy
Imposter Mech
5.0%inclusion1 decks20 decks
3%synergy
Enchantments
Tinybones Joins Up
80%inclusion16 decks20 decks
79%synergy
Blind Obedience
65%inclusion13 decks20 decks
53%synergy
Copy Artifact
65%inclusion13 decks20 decks
64%synergy
Amphibian Downpour
65%inclusion13 decks20 decks
60%synergy
Steal Enchantment
55%inclusion11 decks20 decks
54%synergy
Chains of Mephistopheles
55%inclusion11 decks20 decks
55%synergy
The Meathook Massacre
50%inclusion10 decks20 decks
47%synergy
Necropotence
50%inclusion10 decks20 decks
43%synergy
Counterbalance
40%inclusion8 decks20 decks
38%synergy
Mirrormade
40%inclusion8 decks20 decks
30%synergy
Touch the Spirit Realm
35%inclusion7 decks20 decks
32%synergy
Ripples of Undeath
30%inclusion6 decks20 decks
27%synergy
Static Prison
30%inclusion6 decks20 decks
29%synergy
Founding the Third Path
25%inclusion5 decks20 decks
25%synergy
Teval's Judgment
22%inclusion2 decks9 decks
21%synergy
Seal of Cleansing
15%inclusion3 decks20 decks
13%synergy
Monologue Tax
15%inclusion3 decks20 decks
9%synergy
Trouble in Pairs
15%inclusion3 decks20 decks
9%synergy
Attunement
10%inclusion2 decks20 decks
10%synergy
Seal of Removal
10%inclusion2 decks20 decks
9%synergy
Waste Not
5.0%inclusion1 decks20 decks
5%synergy
One with the Multiverse
5.0%inclusion1 decks20 decks
0%synergy
Parallax Wave
5.0%inclusion1 decks20 decks
5%synergy
Unnatural Selection
5.0%inclusion1 decks20 decks
5%synergy
Curse of Silence
5.0%inclusion1 decks20 decks
5%synergy
Parallax Nexus
5.0%inclusion1 decks20 decks
5%synergy
Spirit Mirror
5.0%inclusion1 decks20 decks
5%synergy
Opalescence
5.0%inclusion1 decks20 decks
5%synergy
Dance of Many
5.0%inclusion1 decks20 decks
5%synergy
Omniscience
5.0%inclusion1 decks20 decks
1%synergy
Kismet
5.0%inclusion1 decks20 decks
5%synergy
Spirit-Sister's Call
5.0%inclusion1 decks20 decks
4%synergy
Copy Enchantment
5.0%inclusion1 decks20 decks
0%synergy
Starfield of Nyx
5.0%inclusion1 decks20 decks
1%synergy
Power Artifact
5.0%inclusion1 decks20 decks
5%synergy
Leyline of Anticipation
5.0%inclusion1 decks20 decks
0%synergy
Chthonian Nightmare
5.0%inclusion1 decks20 decks
4%synergy
Black Market Connections
5.0%inclusion1 decks20 decks
-9%synergy
Parallax Tide
5.0%inclusion1 decks20 decks
5%synergy
Aura of Silence
5.0%inclusion1 decks20 decks
2%synergy
Ghostly Prison
5.0%inclusion1 decks20 decks
-16%synergy
Propaganda
5.0%inclusion1 decks20 decks
-21%synergy
Leyline of the Void
5.0%inclusion1 decks20 decks
4%synergy
Pure Reflection
5.0%inclusion1 decks20 decks
5%synergy
Planeswalkers
Teferi, Time Raveler
40%inclusion8 decks20 decks
32%synergy
Tezzeret, Cruel Captain
14%inclusion1 decks7 decks
12%synergy
Utility Lands
Otawara, Soaring City
90%inclusion18 decks20 decks
71%synergy
City of Traitors
35%inclusion7 decks20 decks
34%synergy
Emergence Zone
30%inclusion6 decks20 decks
28%synergy
Minamo, School at Water's Edge
25%inclusion5 decks20 decks
21%synergy
Serra's Sanctum
25%inclusion5 decks20 decks
23%synergy
Urza's Saga
25%inclusion5 decks20 decks
13%synergy
Cephalid Coliseum
25%inclusion5 decks20 decks
21%synergy
Wasteland
10%inclusion2 decks20 decks
9%synergy
Hall of Heliod's Generosity
10%inclusion2 decks20 decks
-3%synergy
Bazaar of Baghdad
10%inclusion2 decks20 decks
10%synergy
Strip Mine
10%inclusion2 decks20 decks
8%synergy
Mystic Sanctuary
5.0%inclusion1 decks20 decks
1%synergy
Phyrexian Tower
5.0%inclusion1 decks20 decks
1%synergy
Arcane Lighthouse
5.0%inclusion1 decks20 decks
4%synergy
Treasure Vault
5.0%inclusion1 decks20 decks
4%synergy
Crystal Vein
5.0%inclusion1 decks20 decks
5%synergy
Cabal Pit
5.0%inclusion1 decks20 decks
5%synergy
Karn's Bastion
5.0%inclusion1 decks20 decks
4%synergy
Saprazzan Skerry
5.0%inclusion1 decks20 decks
5%synergy
Mana Artifacts
Arcane Signet
100%inclusion20 decks20 decks
12%synergy
Sol Ring
100%inclusion20 decks20 decks
10%synergy
Lotus Petal
90%inclusion18 decks20 decks
79%synergy
Lion's Eye Diamond
80%inclusion16 decks20 decks
78%synergy
Mox Opal
75%inclusion15 decks20 decks
66%synergy
Talisman of Dominance
70%inclusion14 decks20 decks
21%synergy
Grim Monolith
55%inclusion11 decks20 decks
51%synergy
Fellwar Stone
55%inclusion11 decks20 decks
21%synergy
Talisman of Progress
45%inclusion9 decks20 decks
2%synergy
Mox Amber
25%inclusion5 decks20 decks
19%synergy
Talisman of Hierarchy
15%inclusion3 decks20 decks
-28%synergy
Springleaf Drum
5.0%inclusion1 decks20 decks
3%synergy
Lands
Tundra
100%inclusion20 decks20 decks
84%synergy
Underground Sea
100%inclusion20 decks20 decks
84%synergy
Godless Shrine
100%inclusion20 decks20 decks
50%synergy
Scrubland
100%inclusion20 decks20 decks
84%synergy
Marsh Flats
100%inclusion20 decks20 decks
64%synergy
Polluted Delta
100%inclusion20 decks20 decks
63%synergy
Hallowed Fountain
100%inclusion20 decks20 decks
51%synergy
Flooded Strand
100%inclusion20 decks20 decks
62%synergy
Watery Grave
100%inclusion20 decks20 decks
50%synergy
Command Tower
95%inclusion19 decks20 decks
3%synergy
Mana Confluence
95%inclusion19 decks20 decks
81%synergy
Gemstone Caverns
90%inclusion18 decks20 decks
82%synergy
Scalding Tarn
90%inclusion18 decks20 decks
79%synergy
Bloodstained Mire
90%inclusion18 decks20 decks
79%synergy
Verdant Catacombs
85%inclusion17 decks20 decks
75%synergy
City of Brass
85%inclusion17 decks20 decks
70%synergy
Misty Rainforest
80%inclusion16 decks20 decks
69%synergy
Windswept Heath
80%inclusion16 decks20 decks
70%synergy
Undercity Sewers
75%inclusion15 decks20 decks
61%synergy
Exotic Orchard
65%inclusion13 decks20 decks
7%synergy
Morphic Pool
65%inclusion13 decks20 decks
31%synergy
Arid Mesa
65%inclusion13 decks20 decks
55%synergy
Sea of Clouds
50%inclusion10 decks20 decks
14%synergy
Vault of Champions
50%inclusion10 decks20 decks
17%synergy
Island
45%inclusion9 decks20 decks
-48%synergy
Swamp
30%inclusion6 decks20 decks
-61%synergy
Starting Town
25%inclusion2 decks8 decks
21%synergy
Meticulous Archive
20%inclusion4 decks20 decks
6%synergy
Forbidden Orchard
15%inclusion3 decks20 decks
12%synergy
Shadowy Backstreet
10%inclusion2 decks20 decks
-2%synergy
Spire of Industry
10%inclusion2 decks20 decks
1%synergy
Tarnished Citadel
10%inclusion2 decks20 decks
9%synergy
Raffine's Tower
10%inclusion2 decks20 decks
-31%synergy
Cavern of Souls
10%inclusion2 decks20 decks
3%synergy
Plains
10%inclusion2 decks20 decks
-81%synergy
Sink into Stupor
10%inclusion2 decks20 decks
-2%synergy
Gloomlake Verge
10%inclusion2 decks20 decks
-1%synergy
Prismatic Vista
5.0%inclusion1 decks20 decks
1%synergy
Gemstone Mine
5.0%inclusion1 decks20 decks
5%synergy
Prairie Stream
5.0%inclusion1 decks20 decks
-36%synergy
Silent Clearing
5.0%inclusion1 decks20 decks
2%synergy
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