Karumonix, the Rat King (Commander) - Expensive Proliferate

Karumonix, the Rat King
Rank #385
4decks
As CommanderAs CardAverage DeckDecks
Bracket
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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Rat King, Verminister
100%inclusion1 decks1 decks
97%synergy
Rat King, Pale Piper
100%inclusion1 decks1 decks
96%synergy
High Synergy Cards
Marrow-Gnawer
100%inclusion4 decks4 decks
97%synergy
Ashcoat of the Shadow Swarm
100%inclusion4 decks4 decks
97%synergy
Karn's Bastion
100%inclusion4 decks4 decks
96%synergy
Swarmyard
100%inclusion4 decks4 decks
94%synergy
Phyrexian Tower
100%inclusion4 decks4 decks
75%synergy
Nykthos, Shrine to Nyx
100%inclusion4 decks4 decks
70%synergy
Urborg, Tomb of Yawgmoth
100%inclusion4 decks4 decks
62%synergy
Cabal Coffers
100%inclusion4 decks4 decks
45%synergy
Game Changers
Demonic Tutor
75%inclusion3 decks4 decks
48%synergy
Vampiric Tutor
50%inclusion2 decks4 decks
29%synergy
Imperial Seal
25%inclusion1 decks4 decks
18%synergy
Mishra's Workshop
25%inclusion1 decks4 decks
25%synergy
Creatures
Piper of the Swarm
75%inclusion3 decks4 decks
68%synergy
Blightbelly Rat
75%inclusion3 decks4 decks
71%synergy
Rat Colony
75%inclusion3 decks4 decks
69%synergy
Lord Skitter, Sewer King
75%inclusion3 decks4 decks
67%synergy
Ichor Rats
75%inclusion3 decks4 decks
72%synergy
Ogre Slumlord
50%inclusion2 decks4 decks
40%synergy
Crypt Rats
50%inclusion2 decks4 decks
45%synergy
Ayara, First of Locthwain
50%inclusion2 decks4 decks
24%synergy
Tangled Colony
50%inclusion2 decks4 decks
47%synergy
Filth
50%inclusion2 decks4 decks
48%synergy
Pack Rat
50%inclusion2 decks4 decks
44%synergy
Throat Slitter
50%inclusion2 decks4 decks
48%synergy
Ink-Eyes, Servant of Oni
50%inclusion2 decks4 decks
47%synergy
Locust Miser
50%inclusion2 decks4 decks
48%synergy
Chittering Skitterling
50%inclusion2 decks4 decks
49%synergy
Nezumi Prowler
50%inclusion2 decks4 decks
49%synergy
Pestilence Rats
50%inclusion2 decks4 decks
48%synergy
Septic Rats
50%inclusion2 decks4 decks
48%synergy
Wave of Rats
50%inclusion2 decks4 decks
48%synergy
Boggart Trawler
33%inclusion1 decks3 decks
24%synergy
Persistent Marshstalker
33%inclusion1 decks3 decks
30%synergy
Nezumi Graverobber
25%inclusion1 decks4 decks
24%synergy
Metallic Mimic
25%inclusion1 decks4 decks
24%synergy
Burglar Rat
25%inclusion1 decks4 decks
14%synergy
Ravenous Rats
25%inclusion1 decks4 decks
23%synergy
Crashing Drawbridge
25%inclusion1 decks4 decks
23%synergy
Ruthless Radrat
25%inclusion1 decks4 decks
24%synergy
Nezumi Bladeblesser
25%inclusion1 decks4 decks
24%synergy
Lord Skitter's Butcher
25%inclusion1 decks4 decks
22%synergy
Species Specialist
25%inclusion1 decks4 decks
22%synergy
Myr Convert
25%inclusion1 decks4 decks
24%synergy
Swarm of Rats
25%inclusion1 decks4 decks
22%synergy
Bilious Skulldweller
25%inclusion1 decks4 decks
24%synergy
Chittering Witch
25%inclusion1 decks4 decks
21%synergy
Voracious Vermin
25%inclusion1 decks4 decks
22%synergy
Ossuary Rats
25%inclusion1 decks4 decks
25%synergy
Crypt Ghast
25%inclusion1 decks4 decks
-23%synergy
Sheoldred's Headcleaver
25%inclusion1 decks4 decks
25%synergy
Ratcatcher
25%inclusion1 decks4 decks
22%synergy
Vraan, Executioner Thane
25%inclusion1 decks4 decks
22%synergy
Terror of Towashi
25%inclusion1 decks4 decks
25%synergy
Nimraiser Paladin
25%inclusion1 decks4 decks
25%synergy
Gnat Miser
25%inclusion1 decks4 decks
22%synergy
Nashi, Moon Sage's Scion
25%inclusion1 decks4 decks
21%synergy
Gulping Scraptrap
25%inclusion1 decks4 decks
24%synergy
Skithiryx, the Blight Dragon
25%inclusion1 decks4 decks
24%synergy
Rancid Rats
25%inclusion1 decks4 decks
22%synergy
Old Flitterfang
25%inclusion1 decks4 decks
24%synergy
Aclazotz, Deepest Betrayal
25%inclusion1 decks4 decks
19%synergy
Instants
Tainted Strike
75%inclusion3 decks4 decks
72%synergy
Whisper of the Dross
50%inclusion2 decks4 decks
47%synergy
Vraska's Fall
50%inclusion2 decks4 decks
47%synergy
Sudden Spoiling
50%inclusion2 decks4 decks
41%synergy
Fell the Profane
33%inclusion1 decks3 decks
15%synergy
Go for the Throat
25%inclusion1 decks4 decks
2%synergy
Songs of the Damned
25%inclusion1 decks4 decks
20%synergy
Wring Flesh
25%inclusion1 decks4 decks
25%synergy
Dark Ritual
25%inclusion1 decks4 decks
-42%synergy
Cabal Ritual
25%inclusion1 decks4 decks
7%synergy
Virulent Wound
25%inclusion1 decks4 decks
25%synergy
Extinguish the Light
25%inclusion1 decks4 decks
25%synergy
Malakir Rebirth
25%inclusion1 decks4 decks
2%synergy
Unseal the Necropolis
25%inclusion1 decks4 decks
23%synergy
Offer Immortality
25%inclusion1 decks4 decks
23%synergy
Sorceries
Bloodline Bidding
100%inclusion1 decks1 decks
95%synergy
Patriarch's Bidding
75%inclusion3 decks4 decks
71%synergy
Phyresis Outbreak
75%inclusion3 decks4 decks
73%synergy
Infectious Inquiry
75%inclusion3 decks4 decks
72%synergy
Drown in Ichor
50%inclusion2 decks4 decks
46%synergy
Strategic Betrayal
33%inclusion1 decks3 decks
33%synergy
Revenge of the Rats
33%inclusion1 decks3 decks
30%synergy
Swarmyard Massacre
33%inclusion1 decks3 decks
31%synergy
Diabolic Intent
25%inclusion1 decks4 decks
10%synergy
Black Sun's Zenith
25%inclusion1 decks4 decks
20%synergy
Vat Emergence
25%inclusion1 decks4 decks
24%synergy
Demogorgon's Clutches
25%inclusion1 decks4 decks
25%synergy
Bone Splinters
25%inclusion1 decks4 decks
23%synergy
Victimize
25%inclusion1 decks4 decks
-2%synergy
Bubbling Muck
25%inclusion1 decks4 decks
9%synergy
Feed the Swarm
25%inclusion1 decks4 decks
-25%synergy
Echoing Return
25%inclusion1 decks4 decks
22%synergy
Buried Alive
25%inclusion1 decks4 decks
13%synergy
Decree of Pain
25%inclusion1 decks4 decks
20%synergy
Living Death
25%inclusion1 decks4 decks
15%synergy
Reanimate
25%inclusion1 decks4 decks
-15%synergy
Kindred Dominance
25%inclusion1 decks4 decks
20%synergy
Plague of Vermin
25%inclusion1 decks4 decks
23%synergy
Utility Artifacts
Skullclamp
75%inclusion3 decks4 decks
53%synergy
Bontu's Monument
75%inclusion3 decks4 decks
47%synergy
Jet Medallion
75%inclusion3 decks4 decks
13%synergy
Contagion Engine
50%inclusion2 decks4 decks
48%synergy
Herald's Horn
50%inclusion2 decks4 decks
44%synergy
Eldrazi Monument
50%inclusion2 decks4 decks
48%synergy
Contagion Clasp
25%inclusion1 decks4 decks
23%synergy
Ashnod's Altar
25%inclusion1 decks4 decks
5%synergy
Coat of Arms
25%inclusion1 decks4 decks
22%synergy
Lavaspur Boots
25%inclusion1 decks4 decks
23%synergy
Sword of Truth and Justice
25%inclusion1 decks4 decks
24%synergy
Prosthetic Injector
25%inclusion1 decks4 decks
25%synergy
Manascape Refractor
25%inclusion1 decks4 decks
25%synergy
Thrumming Stone
25%inclusion1 decks4 decks
21%synergy
Nihil Spellbomb
25%inclusion1 decks4 decks
24%synergy
Lightning Greaves
25%inclusion1 decks4 decks
-9%synergy
Grafted Exoskeleton
25%inclusion1 decks4 decks
24%synergy
Enchantments
Cover of Darkness
75%inclusion3 decks4 decks
72%synergy
Oversold Cemetery
75%inclusion3 decks4 decks
70%synergy
Glistening Oil
50%inclusion2 decks4 decks
49%synergy
Grave Pact
50%inclusion2 decks4 decks
31%synergy
Dark Prophecy
50%inclusion2 decks4 decks
46%synergy
Necrogen Communion
50%inclusion2 decks4 decks
48%synergy
Waste Not
25%inclusion1 decks4 decks
14%synergy
The Meathook Massacre
25%inclusion1 decks4 decks
8%synergy
Black Market Connections
25%inclusion1 decks4 decks
1%synergy
Planeswalkers
Liliana of the Dark Realms
50%inclusion2 decks4 decks
36%synergy
Vraska, Betrayal's Sting
25%inclusion1 decks4 decks
22%synergy
Utility Lands
Crypt of Agadeem
75%inclusion3 decks4 decks
64%synergy
Reliquary Tower
75%inclusion3 decks4 decks
45%synergy
Three Tree City
67%inclusion2 decks3 decks
62%synergy
Bojuka Bog
50%inclusion2 decks4 decks
3%synergy
Westvale Abbey
50%inclusion2 decks4 decks
43%synergy
Cabal Stronghold
50%inclusion2 decks4 decks
15%synergy
Witch's Cottage
50%inclusion2 decks4 decks
25%synergy
War Room
50%inclusion2 decks4 decks
34%synergy
Castle Locthwain
50%inclusion2 decks4 decks
33%synergy
Rogue's Passage
50%inclusion2 decks4 decks
31%synergy
Mudflat Village
33%inclusion1 decks3 decks
31%synergy
Shizo, Death's Storehouse
25%inclusion1 decks4 decks
15%synergy
Witch's Clinic
25%inclusion1 decks4 decks
24%synergy
Ghost Quarter
25%inclusion1 decks4 decks
22%synergy
Barren Moor
25%inclusion1 decks4 decks
15%synergy
Winding Canyons
25%inclusion1 decks4 decks
25%synergy
Command Beacon
25%inclusion1 decks4 decks
17%synergy
The Dross Pits
25%inclusion1 decks4 decks
24%synergy
Minas Morgul, Dark Fortress
25%inclusion1 decks4 decks
22%synergy
Peat Bog
25%inclusion1 decks4 decks
23%synergy
Terrain Generator
25%inclusion1 decks4 decks
23%synergy
Takenuma, Abandoned Mire
25%inclusion1 decks4 decks
9%synergy
Lake of the Dead
25%inclusion1 decks4 decks
20%synergy
Dark Depths
25%inclusion1 decks4 decks
24%synergy
Dakmor Salvage
25%inclusion1 decks4 decks
23%synergy
Strip Mine
25%inclusion1 decks4 decks
22%synergy
Access Tunnel
25%inclusion1 decks4 decks
22%synergy
Mana Artifacts
Glistening Sphere
75%inclusion3 decks4 decks
74%synergy
Sol Ring
75%inclusion3 decks4 decks
-11%synergy
Everflowing Chalice
25%inclusion1 decks4 decks
19%synergy
Staff of Compleation
25%inclusion1 decks4 decks
23%synergy
Charcoal Diamond
25%inclusion1 decks4 decks
3%synergy
Astral Cornucopia
25%inclusion1 decks4 decks
25%synergy
Basalt Monolith
25%inclusion1 decks4 decks
23%synergy
Skull of Ramos
25%inclusion1 decks4 decks
25%synergy
Phyrexian Atlas
25%inclusion1 decks4 decks
25%synergy
Lands
Swamp
100%inclusion4 decks4 decks
5%synergy
Cavern of Souls
75%inclusion3 decks4 decks
68%synergy
Command Tower
50%inclusion2 decks4 decks
44%synergy
Path of Ancestry
50%inclusion2 decks4 decks
45%synergy
Fell the Profane
33%inclusion1 decks3 decks
15%synergy
Urza's Cave
33%inclusion1 decks3 decks
25%synergy
Boggart Trawler
33%inclusion1 decks3 decks
24%synergy
Demolition Field
25%inclusion1 decks4 decks
20%synergy
Malakir Rebirth
25%inclusion1 decks4 decks
2%synergy
Snow-Covered Swamp
25%inclusion1 decks4 decks
18%synergy
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