Karumonix, the Rat King (Commander) - Optimized Combo

Karumonix, the Rat King
Rank #385
2decks
As CommanderAs CardAverage DeckDecks
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All12345
Budget
Any
$
$$$
Background image for Building Rat Typal With Marrow-Gnawer
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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Demonic Tutor
100%inclusion2 decks2 decks
73%synergy
Vampiric Tutor
100%inclusion2 decks2 decks
79%synergy
Bolas's Citadel
50%inclusion1 decks2 decks
21%synergy
Chrome Mox
50%inclusion1 decks2 decks
44%synergy
Creatures
Marrow-Gnawer
100%inclusion2 decks2 decks
97%synergy
Pack Rat
100%inclusion2 decks2 decks
94%synergy
Piper of the Swarm
100%inclusion2 decks2 decks
93%synergy
Blightbelly Rat
100%inclusion2 decks2 decks
96%synergy
Mirkwood Bats
50%inclusion1 decks2 decks
41%synergy
Ogre Slumlord
50%inclusion1 decks2 decks
40%synergy
Crypt Rats
50%inclusion1 decks2 decks
45%synergy
Ayara, First of Locthwain
50%inclusion1 decks2 decks
24%synergy
Tangled Colony
50%inclusion1 decks2 decks
47%synergy
Nezumi Bladeblesser
50%inclusion1 decks2 decks
49%synergy
Chittering Skitterling
50%inclusion1 decks2 decks
49%synergy
Chittering Witch
50%inclusion1 decks2 decks
46%synergy
Valley Rotcaller
50%inclusion1 decks2 decks
47%synergy
Jade-Cast Sentinel
50%inclusion1 decks2 decks
50%synergy
Ashcoat of the Shadow Swarm
50%inclusion1 decks2 decks
47%synergy
Yawgmoth, Thran Physician
50%inclusion1 decks2 decks
40%synergy
Rancid Rats
50%inclusion1 decks2 decks
47%synergy
Rat Colony
50%inclusion1 decks2 decks
44%synergy
Lord Skitter, Sewer King
50%inclusion1 decks2 decks
42%synergy
Ichor Rats
50%inclusion1 decks2 decks
47%synergy
Instants
Vraska's Fall
100%inclusion2 decks2 decks
97%synergy
Dark Ritual
100%inclusion2 decks2 decks
33%synergy
Murder
100%inclusion2 decks2 decks
90%synergy
Fight On!
100%inclusion1 decks1 decks
98%synergy
Zuko's Conviction
100%inclusion1 decks1 decks
99%synergy
Go for the Throat
50%inclusion1 decks2 decks
27%synergy
Village Rites
50%inclusion1 decks2 decks
25%synergy
Cabal Ritual
50%inclusion1 decks2 decks
32%synergy
Infernal Grasp
50%inclusion1 decks2 decks
25%synergy
You Are Already Dead
50%inclusion1 decks2 decks
49%synergy
Fake Your Own Death
50%inclusion1 decks2 decks
43%synergy
Ob Nixilis's Cruelty
50%inclusion1 decks2 decks
50%synergy
Sorceries
Bone Splinters
50%inclusion1 decks2 decks
48%synergy
Diabolic Tutor
50%inclusion1 decks2 decks
36%synergy
Victimize
50%inclusion1 decks2 decks
23%synergy
Final Act
50%inclusion1 decks2 decks
49%synergy
Phyresis Outbreak
50%inclusion1 decks2 decks
48%synergy
Feed the Swarm
50%inclusion1 decks2 decks
0%synergy
Infectious Inquiry
50%inclusion1 decks2 decks
47%synergy
Lash of the Balrog
50%inclusion1 decks2 decks
49%synergy
Mutilate
50%inclusion1 decks2 decks
33%synergy
Exsanguinate
50%inclusion1 decks2 decks
25%synergy
Fortuitous Find
50%inclusion1 decks2 decks
49%synergy
Reanimate
50%inclusion1 decks2 decks
10%synergy
In Garruk's Wake
50%inclusion1 decks2 decks
46%synergy
Beacon of Unrest
50%inclusion1 decks2 decks
46%synergy
Toxic Deluge
50%inclusion1 decks2 decks
13%synergy
Sign in Blood
50%inclusion1 decks2 decks
14%synergy
Raise Dead
50%inclusion1 decks2 decks
49%synergy
Assassinate
50%inclusion1 decks2 decks
50%synergy
Drown in Ichor
50%inclusion1 decks2 decks
46%synergy
Disentomb
50%inclusion1 decks2 decks
49%synergy
Grim Tutor
50%inclusion1 decks2 decks
38%synergy
Plague of Vermin
50%inclusion1 decks2 decks
48%synergy
Utility Artifacts
Contagion Engine
100%inclusion2 decks2 decks
98%synergy
Lightning Greaves
100%inclusion2 decks2 decks
66%synergy
Thornbite Staff
100%inclusion2 decks2 decks
97%synergy
Elixir of Immortality
50%inclusion1 decks2 decks
48%synergy
Contagion Clasp
50%inclusion1 decks2 decks
48%synergy
Bloodsoaked Altar
50%inclusion1 decks2 decks
50%synergy
Wishclaw Talisman
50%inclusion1 decks2 decks
43%synergy
Phyrexian Altar
50%inclusion1 decks2 decks
36%synergy
Bontu's Monument
50%inclusion1 decks2 decks
22%synergy
Akroma's Memorial
50%inclusion1 decks2 decks
49%synergy
Thrumming Stone
50%inclusion1 decks2 decks
46%synergy
Swiftfoot Boots
50%inclusion1 decks2 decks
19%synergy
Welding Jar
50%inclusion1 decks2 decks
50%synergy
Grafted Exoskeleton
50%inclusion1 decks2 decks
49%synergy
Enchantments
Phyrexian Arena
100%inclusion2 decks2 decks
60%synergy
Black Market
50%inclusion1 decks2 decks
29%synergy
Contamination
50%inclusion1 decks2 decks
47%synergy
Grave Pact
50%inclusion1 decks2 decks
31%synergy
Seal of Doom
50%inclusion1 decks2 decks
50%synergy
Dictate of Erebos
50%inclusion1 decks2 decks
39%synergy
Phyresis
50%inclusion1 decks2 decks
48%synergy
No Mercy
50%inclusion1 decks2 decks
43%synergy
Animate Dead
50%inclusion1 decks2 decks
33%synergy
Black Market Connections
50%inclusion1 decks2 decks
26%synergy
Cover of Darkness
50%inclusion1 decks2 decks
47%synergy
Leyline of the Void
50%inclusion1 decks2 decks
48%synergy
Utility Lands
Bojuka Bog
100%inclusion2 decks2 decks
53%synergy
Karn's Bastion
100%inclusion2 decks2 decks
96%synergy
Buried Ruin
50%inclusion1 decks2 decks
45%synergy
Swarmyard
50%inclusion1 decks2 decks
44%synergy
Cabal Coffers
50%inclusion1 decks2 decks
-5%synergy
Reliquary Tower
50%inclusion1 decks2 decks
20%synergy
Urborg, Tomb of Yawgmoth
50%inclusion1 decks2 decks
12%synergy
Mana Artifacts
Staff of Compleation
100%inclusion2 decks2 decks
98%synergy
Glistening Sphere
50%inclusion1 decks2 decks
49%synergy
Sol Ring
50%inclusion1 decks2 decks
-36%synergy
Lands
Swamp
100%inclusion2 decks2 decks
5%synergy
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