Karumonix, the Rat King (Commander) - Upgraded Midrange

Karumonix, the Rat King
Rank #412
2decks
As CommanderAs CardAverage DeckDecks
Bracket
All
1
2345
Budget
Any
$
$$$
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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Creatures
Instants
Sorceries
Utility Artifacts
Enchantments
Planeswalkers
Utility Lands
Mana Artifacts
Lands
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Imperial Seal
50%inclusion1 decks2 decks
43%synergy
Bolas's Citadel
50%inclusion1 decks2 decks
22%synergy
Demonic Tutor
50%inclusion1 decks2 decks
23%synergy
Vampiric Tutor
50%inclusion1 decks2 decks
29%synergy
Creatures
Ogre Slumlord
100%inclusion2 decks2 decks
91%synergy
Rat Colony
100%inclusion2 decks2 decks
95%synergy
Rat King, Verminister
100%inclusion1 decks1 decks
97%synergy
Mirkwood Bats
50%inclusion1 decks2 decks
42%synergy
Crypt Rats
50%inclusion1 decks2 decks
46%synergy
Marrow-Gnawer
50%inclusion1 decks2 decks
47%synergy
Burglar Rat
50%inclusion1 decks2 decks
40%synergy
Ayara, First of Locthwain
50%inclusion1 decks2 decks
25%synergy
Defiler of Flesh
50%inclusion1 decks2 decks
46%synergy
Tangled Colony
50%inclusion1 decks2 decks
47%synergy
Lord Skitter's Butcher
50%inclusion1 decks2 decks
47%synergy
Pack Rat
50%inclusion1 decks2 decks
44%synergy
Nirkana Revenant
50%inclusion1 decks2 decks
40%synergy
Persistent Marshstalker
50%inclusion1 decks2 decks
47%synergy
Swarm of Rats
50%inclusion1 decks2 decks
48%synergy
Chittering Skitterling
50%inclusion1 decks2 decks
49%synergy
Chittering Witch
50%inclusion1 decks2 decks
46%synergy
Voracious Vermin
50%inclusion1 decks2 decks
47%synergy
Changeling Outcast
50%inclusion1 decks2 decks
45%synergy
Piper of the Swarm
50%inclusion1 decks2 decks
43%synergy
Ratcatcher
50%inclusion1 decks2 decks
47%synergy
Blightbelly Rat
50%inclusion1 decks2 decks
47%synergy
Septic Rats
50%inclusion1 decks2 decks
48%synergy
Wave of Rats
50%inclusion1 decks2 decks
48%synergy
Gnat Miser
50%inclusion1 decks2 decks
47%synergy
Typhoid Rats
50%inclusion1 decks2 decks
47%synergy
Rancid Rats
50%inclusion1 decks2 decks
48%synergy
Lord Skitter, Sewer King
50%inclusion1 decks2 decks
42%synergy
Ichor Rats
50%inclusion1 decks2 decks
47%synergy
Instants
Dark Ritual
100%inclusion2 decks2 decks
33%synergy
Cabal Ritual
100%inclusion2 decks2 decks
81%synergy
Withering Torment
100%inclusion2 decks2 decks
68%synergy
Hero's Downfall
50%inclusion1 decks2 decks
44%synergy
Deadly Rollick
50%inclusion1 decks2 decks
24%synergy
Whisper of the Dross
50%inclusion1 decks2 decks
47%synergy
Give In to Violence
50%inclusion1 decks2 decks
50%synergy
Go for the Throat
50%inclusion1 decks2 decks
28%synergy
Vraska's Fall
50%inclusion1 decks2 decks
47%synergy
Village Rites
50%inclusion1 decks2 decks
24%synergy
Rat Out
50%inclusion1 decks2 decks
49%synergy
Deadly Dispute
50%inclusion1 decks2 decks
23%synergy
Doom Blade
50%inclusion1 decks2 decks
43%synergy
Virulent Wound
50%inclusion1 decks2 decks
50%synergy
Raise the Draugr
50%inclusion1 decks2 decks
49%synergy
Darkness
50%inclusion1 decks2 decks
39%synergy
Murder
50%inclusion1 decks2 decks
40%synergy
Death Denied
50%inclusion1 decks2 decks
49%synergy
Foul-Tongue Shriek
50%inclusion1 decks2 decks
48%synergy
Corrupted Conviction
50%inclusion1 decks2 decks
38%synergy
Gravepurge
50%inclusion1 decks2 decks
49%synergy
Sorceries
Crippling Fear
100%inclusion2 decks2 decks
97%synergy
Diabolic Intent
50%inclusion1 decks2 decks
35%synergy
Diabolic Tutor
50%inclusion1 decks2 decks
37%synergy
Revenge of the Rats
50%inclusion1 decks2 decks
47%synergy
Desperate Research
50%inclusion1 decks2 decks
50%synergy
Forever Young
50%inclusion1 decks2 decks
49%synergy
Phyresis Outbreak
50%inclusion1 decks2 decks
48%synergy
Feed the Swarm
50%inclusion1 decks2 decks
-0%synergy
Echoing Return
50%inclusion1 decks2 decks
47%synergy
Infectious Inquiry
50%inclusion1 decks2 decks
47%synergy
Night's Whisper
50%inclusion1 decks2 decks
24%synergy
Kindred Dominance
50%inclusion1 decks2 decks
45%synergy
Drown in Ichor
50%inclusion1 decks2 decks
47%synergy
Plague of Vermin
50%inclusion1 decks2 decks
48%synergy
Utility Artifacts
Bontu's Monument
100%inclusion2 decks2 decks
72%synergy
Jet Medallion
100%inclusion2 decks2 decks
38%synergy
Sensei's Divining Top
50%inclusion1 decks2 decks
42%synergy
Glaring Spotlight
50%inclusion1 decks2 decks
49%synergy
Nemesis Mask
50%inclusion1 decks2 decks
50%synergy
Ashnod's Altar
50%inclusion1 decks2 decks
30%synergy
Cloudstone Curio
50%inclusion1 decks2 decks
50%synergy
Aetherflux Reservoir
50%inclusion1 decks2 decks
41%synergy
Banner of Kinship
50%inclusion1 decks2 decks
48%synergy
Thrumming Stone
50%inclusion1 decks2 decks
46%synergy
Altar of the Brood
50%inclusion1 decks2 decks
48%synergy
Mindcrank
50%inclusion1 decks2 decks
45%synergy
Lightning Greaves
50%inclusion1 decks2 decks
16%synergy
Thornbite Staff
50%inclusion1 decks2 decks
47%synergy
Enchantments
The Meathook Massacre
50%inclusion1 decks2 decks
33%synergy
Black Market
50%inclusion1 decks2 decks
30%synergy
Sanguine Bond
50%inclusion1 decks2 decks
39%synergy
Exquisite Blood
50%inclusion1 decks2 decks
37%synergy
Intimidation
50%inclusion1 decks2 decks
49%synergy
Virulent Plague
50%inclusion1 decks2 decks
50%synergy
Dauthi Embrace
50%inclusion1 decks2 decks
48%synergy
Bloodchief Ascension
50%inclusion1 decks2 decks
41%synergy
Cover of Darkness
50%inclusion1 decks2 decks
47%synergy
Oversold Cemetery
50%inclusion1 decks2 decks
45%synergy
Planeswalkers
Liliana of the Dark Realms
50%inclusion1 decks2 decks
36%synergy
Utility Lands
Swarmyard
100%inclusion2 decks2 decks
94%synergy
Three Tree City
100%inclusion2 decks2 decks
95%synergy
Urborg, Tomb of Yawgmoth
100%inclusion2 decks2 decks
62%synergy
Bojuka Bog
50%inclusion1 decks2 decks
3%synergy
Phyrexian Tower
50%inclusion1 decks2 decks
23%synergy
Nykthos, Shrine to Nyx
50%inclusion1 decks2 decks
20%synergy
Karn's Bastion
50%inclusion1 decks2 decks
46%synergy
Mudflat Village
50%inclusion1 decks2 decks
47%synergy
Reliquary Tower
50%inclusion1 decks2 decks
21%synergy
Mana Artifacts
Sol Ring
100%inclusion2 decks2 decks
15%synergy
Arcane Signet
50%inclusion1 decks2 decks
-11%synergy
Lands
Big Apple, 3 a.m.
100%inclusion1 decks1 decks
98%synergy
Escape Tunnel
50%inclusion1 decks2 decks
49%synergy
Myriad Landscape
50%inclusion1 decks2 decks
26%synergy
Swamp
50%inclusion1 decks2 decks
-45%synergy
Evolving Wilds
50%inclusion1 decks2 decks
46%synergy
Snow-Covered Swamp
50%inclusion1 decks2 decks
44%synergy
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