Karumonix, the Rat King (Commander) - Optimized Combo

Karumonix, the Rat King
Rank #412
3decks
As CommanderAs CardAverage DeckDecks
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1
234
5
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$
$$$
Jeremy Rowe
Mar 20, 2026
Jeremy Rowe
Building Rat Typal With Marrow-Gnawer
These Rats will do a lot more than pull your hair. Let's see what Marrow-Gnawer can do leading a swarm of Rats in Commander.
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Archidekt
Commander Spellbook
Moxfield
Scryfall
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Creatures
Instants
Sorceries
Utility Artifacts
Enchantments
Utility Lands
Mana Artifacts
Lands
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Demonic Tutor
100%inclusion3 decks3 decks
73%synergy
Vampiric Tutor
100%inclusion3 decks3 decks
79%synergy
Chrome Mox
67%inclusion2 decks3 decks
61%synergy
Imperial Seal
33%inclusion1 decks3 decks
26%synergy
Ancient Tomb
33%inclusion1 decks3 decks
22%synergy
Bolas's Citadel
33%inclusion1 decks3 decks
6%synergy
The One Ring
33%inclusion1 decks3 decks
24%synergy
Mana Vault
33%inclusion1 decks3 decks
27%synergy
Necropotence
33%inclusion1 decks3 decks
19%synergy
Ad Nauseam
33%inclusion1 decks3 decks
30%synergy
Creatures
Marrow-Gnawer
100%inclusion3 decks3 decks
97%synergy
Piper of the Swarm
100%inclusion3 decks3 decks
93%synergy
Blightbelly Rat
100%inclusion3 decks3 decks
97%synergy
Pack Rat
67%inclusion2 decks3 decks
61%synergy
Rancid Rats
67%inclusion2 decks3 decks
64%synergy
Rat Colony
67%inclusion2 decks3 decks
61%synergy
Ichor Rats
67%inclusion2 decks3 decks
64%synergy
Bog Rats
33%inclusion1 decks3 decks
33%synergy
Mirkwood Bats
33%inclusion1 decks3 decks
25%synergy
Ogre Slumlord
33%inclusion1 decks3 decks
24%synergy
Crypt Rats
33%inclusion1 decks3 decks
29%synergy
Ruthless Radrat
33%inclusion1 decks3 decks
33%synergy
Ayara, First of Locthwain
33%inclusion1 decks3 decks
8%synergy
Tangled Colony
33%inclusion1 decks3 decks
30%synergy
Nezumi Bladeblesser
33%inclusion1 decks3 decks
33%synergy
Zodiac Rat
33%inclusion1 decks3 decks
33%synergy
Chittering Skitterling
33%inclusion1 decks3 decks
32%synergy
Chittering Witch
33%inclusion1 decks3 decks
29%synergy
Valley Rotcaller
33%inclusion1 decks3 decks
31%synergy
Jade-Cast Sentinel
33%inclusion1 decks3 decks
33%synergy
Ashcoat of the Shadow Swarm
33%inclusion1 decks3 decks
30%synergy
Yawgmoth, Thran Physician
33%inclusion1 decks3 decks
23%synergy
Muck Rats
33%inclusion1 decks3 decks
33%synergy
Gnat Miser
33%inclusion1 decks3 decks
31%synergy
Typhoid Rats
33%inclusion1 decks3 decks
30%synergy
Lord Skitter, Sewer King
33%inclusion1 decks3 decks
25%synergy
Instants
Vraska's Fall
100%inclusion3 decks3 decks
97%synergy
Dark Ritual
100%inclusion3 decks3 decks
33%synergy
Village Rites
67%inclusion2 decks3 decks
41%synergy
Murder
67%inclusion2 decks3 decks
57%synergy
Fight On!
50%inclusion1 decks2 decks
48%synergy
Zuko's Conviction
50%inclusion1 decks2 decks
49%synergy
Whisper of the Dross
33%inclusion1 decks3 decks
31%synergy
Go for the Throat
33%inclusion1 decks3 decks
11%synergy
Deadly Dispute
33%inclusion1 decks3 decks
6%synergy
Cabal Ritual
33%inclusion1 decks3 decks
14%synergy
Culling the Weak
33%inclusion1 decks3 decks
15%synergy
Infernal Grasp
33%inclusion1 decks3 decks
8%synergy
You Are Already Dead
33%inclusion1 decks3 decks
33%synergy
Fake Your Own Death
33%inclusion1 decks3 decks
26%synergy
Corrupted Conviction
33%inclusion1 decks3 decks
21%synergy
Ob Nixilis's Cruelty
33%inclusion1 decks3 decks
33%synergy
Sorceries
Phyresis Outbreak
67%inclusion2 decks3 decks
65%synergy
Infectious Inquiry
67%inclusion2 decks3 decks
64%synergy
Drown in Ichor
67%inclusion2 decks3 decks
63%synergy
Diabolic Intent
33%inclusion1 decks3 decks
18%synergy
Bone Splinters
33%inclusion1 decks3 decks
32%synergy
Diabolic Tutor
33%inclusion1 decks3 decks
20%synergy
Victimize
33%inclusion1 decks3 decks
5%synergy
Final Act
33%inclusion1 decks3 decks
32%synergy
Feed the Swarm
33%inclusion1 decks3 decks
-17%synergy
Echoing Return
33%inclusion1 decks3 decks
30%synergy
Lash of the Balrog
33%inclusion1 decks3 decks
33%synergy
Mutilate
33%inclusion1 decks3 decks
18%synergy
Exsanguinate
33%inclusion1 decks3 decks
9%synergy
Fortuitous Find
33%inclusion1 decks3 decks
33%synergy
Reanimate
33%inclusion1 decks3 decks
-8%synergy
In Garruk's Wake
33%inclusion1 decks3 decks
30%synergy
Beacon of Unrest
33%inclusion1 decks3 decks
30%synergy
Toxic Deluge
33%inclusion1 decks3 decks
-4%synergy
Sign in Blood
33%inclusion1 decks3 decks
-1%synergy
Raise Dead
33%inclusion1 decks3 decks
32%synergy
Assassinate
33%inclusion1 decks3 decks
33%synergy
Disentomb
33%inclusion1 decks3 decks
32%synergy
Grim Tutor
33%inclusion1 decks3 decks
22%synergy
Plague of Vermin
33%inclusion1 decks3 decks
31%synergy
Pact of the Serpent
33%inclusion1 decks3 decks
32%synergy
Utility Artifacts
Contagion Engine
67%inclusion2 decks3 decks
65%synergy
Bontu's Monument
67%inclusion2 decks3 decks
39%synergy
Thrumming Stone
67%inclusion2 decks3 decks
63%synergy
Lightning Greaves
67%inclusion2 decks3 decks
33%synergy
Thornbite Staff
67%inclusion2 decks3 decks
64%synergy
Elixir of Immortality
33%inclusion1 decks3 decks
31%synergy
Contagion Clasp
33%inclusion1 decks3 decks
31%synergy
Bloodsoaked Altar
33%inclusion1 decks3 decks
33%synergy
Wishclaw Talisman
33%inclusion1 decks3 decks
26%synergy
Phyrexian Altar
33%inclusion1 decks3 decks
19%synergy
Akroma's Memorial
33%inclusion1 decks3 decks
32%synergy
Jet Medallion
33%inclusion1 decks3 decks
-29%synergy
Herald's Horn
33%inclusion1 decks3 decks
28%synergy
Swiftfoot Boots
33%inclusion1 decks3 decks
2%synergy
Welding Jar
33%inclusion1 decks3 decks
33%synergy
Grafted Exoskeleton
33%inclusion1 decks3 decks
32%synergy
Enchantments
Phyresis
67%inclusion2 decks3 decks
65%synergy
Black Market Connections
67%inclusion2 decks3 decks
41%synergy
Cover of Darkness
67%inclusion2 decks3 decks
64%synergy
Phyrexian Arena
67%inclusion2 decks3 decks
27%synergy
Black Market
33%inclusion1 decks3 decks
13%synergy
Contamination
33%inclusion1 decks3 decks
30%synergy
Grave Pact
33%inclusion1 decks3 decks
14%synergy
Seal of Doom
33%inclusion1 decks3 decks
33%synergy
Dictate of Erebos
33%inclusion1 decks3 decks
22%synergy
No Mercy
33%inclusion1 decks3 decks
26%synergy
Animate Dead
33%inclusion1 decks3 decks
16%synergy
Leyline of the Void
33%inclusion1 decks3 decks
32%synergy
Necrogen Communion
33%inclusion1 decks3 decks
32%synergy
Utility Lands
Karn's Bastion
100%inclusion3 decks3 decks
96%synergy
Bojuka Bog
67%inclusion2 decks3 decks
19%synergy
Swarmyard
67%inclusion2 decks3 decks
61%synergy
Cabal Coffers
67%inclusion2 decks3 decks
12%synergy
Reliquary Tower
67%inclusion2 decks3 decks
38%synergy
Urborg, Tomb of Yawgmoth
67%inclusion2 decks3 decks
29%synergy
Cabal Stronghold
33%inclusion1 decks3 decks
-0%synergy
Phyrexian Tower
33%inclusion1 decks3 decks
7%synergy
Buried Ruin
33%inclusion1 decks3 decks
28%synergy
Inkmoth Nexus
33%inclusion1 decks3 decks
32%synergy
Mutavault
33%inclusion1 decks3 decks
33%synergy
Nykthos, Shrine to Nyx
33%inclusion1 decks3 decks
4%synergy
Three Tree City
33%inclusion1 decks3 decks
29%synergy
Mana Artifacts
Staff of Compleation
67%inclusion2 decks3 decks
65%synergy
Sol Ring
67%inclusion2 decks3 decks
-19%synergy
Glistening Sphere
33%inclusion1 decks3 decks
32%synergy
Lotus Petal
33%inclusion1 decks3 decks
26%synergy
Mox Amber
33%inclusion1 decks3 decks
29%synergy
Mox Diamond
33%inclusion1 decks3 decks
30%synergy
Lands
Swamp
100%inclusion3 decks3 decks
5%synergy
Prismatic Vista
33%inclusion1 decks3 decks
31%synergy
Verdant Catacombs
33%inclusion1 decks3 decks
30%synergy
Marsh Flats
33%inclusion1 decks3 decks
30%synergy
Polluted Delta
33%inclusion1 decks3 decks
30%synergy
Bloodstained Mire
33%inclusion1 decks3 decks
29%synergy
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