Karumonix, the Rat King (Commander) - Core Proliferate

Karumonix, the Rat King
Rank #412
11decks
As CommanderAs CardAverage DeckDecks
Bracket
All123
4
5
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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Utility Lands
Mana Artifacts
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Ichor Rats
91%inclusion10 decks11 decks
88%synergy
Marrow-Gnawer
91%inclusion10 decks11 decks
87%synergy
Piper of the Swarm
91%inclusion10 decks11 decks
84%synergy
Drown in Ichor
82%inclusion9 decks11 decks
78%synergy
Phyresis Outbreak
73%inclusion8 decks11 decks
71%synergy
Septic Rats
73%inclusion8 decks11 decks
71%synergy
Rancid Rats
73%inclusion8 decks11 decks
70%synergy
Cover of Darkness
73%inclusion8 decks11 decks
70%synergy
Blightbelly Rat
73%inclusion8 decks11 decks
69%synergy
Typhoid Rats
73%inclusion8 decks11 decks
69%synergy
Top Cards
Dark Ritual
82%inclusion9 decks11 decks
14%synergy
Pack Rat
73%inclusion8 decks11 decks
67%synergy
Lord Skitter, Sewer King
73%inclusion8 decks11 decks
65%synergy
Rat Colony
73%inclusion8 decks11 decks
67%synergy
Feed the Swarm
73%inclusion8 decks11 decks
22%synergy
Vraska's Fall
64%inclusion7 decks11 decks
60%synergy
Infectious Inquiry
64%inclusion7 decks11 decks
61%synergy
Lord Skitter's Butcher
64%inclusion7 decks11 decks
61%synergy
Tangled Colony
64%inclusion7 decks11 decks
61%synergy
Whisper of the Dross
64%inclusion7 decks11 decks
61%synergy
Game Changers
Demonic Tutor
9.1%inclusion1 decks11 decks
-18%synergy
Creatures
Ogre Slumlord
55%inclusion6 decks11 decks
45%synergy
Crypt Rats
55%inclusion6 decks11 decks
50%synergy
Persistent Marshstalker
55%inclusion6 decks11 decks
52%synergy
Ashcoat of the Shadow Swarm
55%inclusion6 decks11 decks
51%synergy
Stronghold Rats
55%inclusion6 decks11 decks
51%synergy
Species Specialist
45%inclusion5 decks11 decks
42%synergy
Rat King, Verminister
40%inclusion4 decks10 decks
37%synergy
Rat King, Pale Piper
40%inclusion4 decks10 decks
36%synergy
Voracious Vermin
36%inclusion4 decks11 decks
34%synergy
Pestilence Rats
36%inclusion4 decks11 decks
35%synergy
Gnat Miser
36%inclusion4 decks11 decks
34%synergy
Ayara, First of Locthwain
27%inclusion3 decks11 decks
2%synergy
Filth
27%inclusion3 decks11 decks
25%synergy
Ink-Eyes, Servant of Oni
27%inclusion3 decks11 decks
24%synergy
Engine Rat
27%inclusion3 decks11 decks
26%synergy
Twisted Sewer-Witch
27%inclusion3 decks11 decks
26%synergy
Ratcatcher
27%inclusion3 decks11 decks
24%synergy
Drainpipe Vermin
27%inclusion3 decks11 decks
26%synergy
Rotting Rats
18%inclusion2 decks11 decks
15%synergy
Priest of Forgotten Gods
18%inclusion2 decks11 decks
10%synergy
Burglar Rat
18%inclusion2 decks11 decks
8%synergy
Zodiac Rat
18%inclusion2 decks11 decks
18%synergy
Razortooth Rats
18%inclusion2 decks11 decks
18%synergy
Locust Miser
18%inclusion2 decks11 decks
17%synergy
Chittering Skitterling
18%inclusion2 decks11 decks
17%synergy
Crypt Ghast
18%inclusion2 decks11 decks
-29%synergy
Changeling Outcast
18%inclusion2 decks11 decks
13%synergy
Nashi, Moon Sage's Scion
18%inclusion2 decks11 decks
15%synergy
Old Flitterfang
18%inclusion2 decks11 decks
17%synergy
Elephant-Rat
18%inclusion2 decks11 decks
18%synergy
Refurbished Familiar
9.1%inclusion1 decks11 decks
7%synergy
Nezumi Ronin
9.1%inclusion1 decks11 decks
9%synergy
Relentless Rats
9.1%inclusion1 decks11 decks
7%synergy
Plaguecrafter
9.1%inclusion1 decks11 decks
-11%synergy
Ravenous Rats
9.1%inclusion1 decks11 decks
7%synergy
Crashing Drawbridge
9.1%inclusion1 decks11 decks
7%synergy
Thornplate Intimidator
9.1%inclusion1 decks11 decks
8%synergy
Gnawing Vermin
9.1%inclusion1 decks11 decks
8%synergy
Roaming Throne
9.1%inclusion1 decks11 decks
6%synergy
Mukotai Ambusher
9.1%inclusion1 decks11 decks
8%synergy
Dauthi Trapper
9.1%inclusion1 decks11 decks
9%synergy
Defiler of Flesh
9.1%inclusion1 decks11 decks
6%synergy
Nezumi Bladeblesser
9.1%inclusion1 decks11 decks
9%synergy
Skull Collector
9.1%inclusion1 decks11 decks
9%synergy
Diseased Vermin
9.1%inclusion1 decks11 decks
9%synergy
Throat Slitter
9.1%inclusion1 decks11 decks
7%synergy
Nezumi Linkbreaker
9.1%inclusion1 decks11 decks
8%synergy
Swarm of Rats
9.1%inclusion1 decks11 decks
7%synergy
Chittering Witch
9.1%inclusion1 decks11 decks
5%synergy
Valley Rotcaller
9.1%inclusion1 decks11 decks
6%synergy
Instants
Defile
45%inclusion5 decks11 decks
10%synergy
Tainted Strike
45%inclusion5 decks11 decks
42%synergy
Village Rites
36%inclusion4 decks11 decks
11%synergy
Grim Affliction
36%inclusion4 decks11 decks
35%synergy
Not Dead After All
27%inclusion3 decks11 decks
16%synergy
Deadly Dispute
27%inclusion3 decks11 decks
0%synergy
Culling the Weak
27%inclusion3 decks11 decks
9%synergy
Malakir Rebirth
27%inclusion3 decks11 decks
3%synergy
Withering Torment
27%inclusion3 decks11 decks
-5%synergy
Deadly Rollick
18%inclusion2 decks11 decks
-8%synergy
Rat Out
18%inclusion2 decks11 decks
17%synergy
Cabal Ritual
18%inclusion2 decks11 decks
-1%synergy
Raise the Draugr
18%inclusion2 decks11 decks
17%synergy
Undying Malice
18%inclusion2 decks11 decks
8%synergy
Infernal Grasp
18%inclusion2 decks11 decks
-7%synergy
Corrupted Conviction
18%inclusion2 decks11 decks
6%synergy
Sudden Spoiling
18%inclusion2 decks11 decks
10%synergy
Tragic Slip
18%inclusion2 decks11 decks
-1%synergy
Reckoner's Bargain
9.1%inclusion1 decks11 decks
6%synergy
Go for the Throat
9.1%inclusion1 decks11 decks
-13%synergy
Mausoleum Secrets
9.1%inclusion1 decks11 decks
7%synergy
Imp's Mischief
9.1%inclusion1 decks11 decks
-17%synergy
Snuff Out
9.1%inclusion1 decks11 decks
-5%synergy
Songs of the Damned
9.1%inclusion1 decks11 decks
3%synergy
Consuming Corruption
9.1%inclusion1 decks11 decks
-6%synergy
Anoint with Affliction
9.1%inclusion1 decks11 decks
9%synergy
Supernatural Stamina
9.1%inclusion1 decks11 decks
1%synergy
Virulent Wound
9.1%inclusion1 decks11 decks
9%synergy
Costly Plunder
9.1%inclusion1 decks11 decks
7%synergy
Foul-Tongue Shriek
9.1%inclusion1 decks11 decks
7%synergy
Plumb the Forbidden
9.1%inclusion1 decks11 decks
5%synergy
Sudden Edict
9.1%inclusion1 decks11 decks
7%synergy
Crypt Incursion
9.1%inclusion1 decks11 decks
7%synergy
Nameless Inversion
9.1%inclusion1 decks11 decks
9%synergy
Feign Death
9.1%inclusion1 decks11 decks
1%synergy
Sorceries
Sign in Blood
55%inclusion6 decks11 decks
20%synergy
Spread the Sickness
45%inclusion5 decks11 decks
45%synergy
Vat Emergence
36%inclusion4 decks11 decks
35%synergy
Revenge of the Rats
36%inclusion4 decks11 decks
33%synergy
Patriarch's Bidding
27%inclusion3 decks11 decks
23%synergy
Swarmyard Massacre
27%inclusion3 decks11 decks
25%synergy
Read the Bones
27%inclusion3 decks11 decks
12%synergy
Night's Whisper
27%inclusion3 decks11 decks
2%synergy
Kindred Dominance
27%inclusion3 decks11 decks
23%synergy
Crippling Fear
27%inclusion3 decks11 decks
25%synergy
Diabolic Tutor
18%inclusion2 decks11 decks
5%synergy
Victimize
18%inclusion2 decks11 decks
-10%synergy
Haunting Voyage
18%inclusion2 decks11 decks
17%synergy
Bubbling Muck
18%inclusion2 decks11 decks
2%synergy
Feed the Infection
18%inclusion2 decks11 decks
18%synergy
Unearth
18%inclusion2 decks11 decks
9%synergy
Echoing Return
18%inclusion2 decks11 decks
15%synergy
Caress of Phyrexia
18%inclusion2 decks11 decks
18%synergy
Reanimate
18%inclusion2 decks11 decks
-23%synergy
Toxic Deluge
18%inclusion2 decks11 decks
-19%synergy
Plague of Vermin
18%inclusion2 decks11 decks
16%synergy
Final Act
9.1%inclusion1 decks11 decks
8%synergy
Psychic Whorl
9.1%inclusion1 decks11 decks
9%synergy
Mutilate
9.1%inclusion1 decks11 decks
-6%synergy
Bone Shards
9.1%inclusion1 decks11 decks
6%synergy
Funeral Rites
9.1%inclusion1 decks11 decks
8%synergy
Exsanguinate
9.1%inclusion1 decks11 decks
-16%synergy
Buried Alive
9.1%inclusion1 decks11 decks
-4%synergy
Living Death
9.1%inclusion1 decks11 decks
-1%synergy
In Garruk's Wake
9.1%inclusion1 decks11 decks
6%synergy
Risky Shortcut
9.1%inclusion1 decks11 decks
8%synergy
Dirge of Dread
9.1%inclusion1 decks11 decks
9%synergy
Final Vengeance
9.1%inclusion1 decks11 decks
8%synergy
Eaten Alive
9.1%inclusion1 decks11 decks
6%synergy
Damnation
9.1%inclusion1 decks11 decks
-11%synergy
Perish
9.1%inclusion1 decks11 decks
9%synergy
Pact of the Serpent
9.1%inclusion1 decks11 decks
8%synergy
Secret Salvage
9.1%inclusion1 decks11 decks
8%synergy
Worst Fears
9.1%inclusion1 decks11 decks
9%synergy
Utility Artifacts
Jet Medallion
55%inclusion6 decks11 decks
-7%synergy
Herald's Horn
55%inclusion6 decks11 decks
49%synergy
Contagion Clasp
27%inclusion3 decks11 decks
25%synergy
Contagion Engine
27%inclusion3 decks11 decks
26%synergy
Bontu's Monument
27%inclusion3 decks11 decks
-1%synergy
Skullclamp
18%inclusion2 decks11 decks
-4%synergy
Vanquisher's Banner
18%inclusion2 decks11 decks
14%synergy
Whispersilk Cloak
18%inclusion2 decks11 decks
12%synergy
Thrumming Stone
18%inclusion2 decks11 decks
14%synergy
Chronicle of Victory
10%inclusion1 decks10 decks
7%synergy
Vat of Rebirth
9.1%inclusion1 decks11 decks
6%synergy
Psychic Paper
9.1%inclusion1 decks11 decks
9%synergy
Transmogrant Altar
9.1%inclusion1 decks11 decks
8%synergy
Icon of Ancestry
9.1%inclusion1 decks11 decks
8%synergy
Erratic Portal
9.1%inclusion1 decks11 decks
9%synergy
Ashnod's Altar
9.1%inclusion1 decks11 decks
-11%synergy
Cloudstone Curio
9.1%inclusion1 decks11 decks
9%synergy
Coat of Arms
9.1%inclusion1 decks11 decks
7%synergy
Vorpal Sword
9.1%inclusion1 decks11 decks
5%synergy
Trailblazer's Boots
9.1%inclusion1 decks11 decks
7%synergy
Pyre of Heroes
9.1%inclusion1 decks11 decks
9%synergy
Sword of the Squeak
9.1%inclusion1 decks11 decks
9%synergy
Banner of Kinship
9.1%inclusion1 decks11 decks
7%synergy
Expedition Map
9.1%inclusion1 decks11 decks
-2%synergy
Blade of Selves
9.1%inclusion1 decks11 decks
8%synergy
Urza's Incubator
9.1%inclusion1 decks11 decks
7%synergy
Silver Shroud Costume
9.1%inclusion1 decks11 decks
8%synergy
Swiftfoot Boots
9.1%inclusion1 decks11 decks
-22%synergy
Lightning Greaves
9.1%inclusion1 decks11 decks
-25%synergy
Dolmen Gate
9.1%inclusion1 decks11 decks
9%synergy
Grafted Exoskeleton
9.1%inclusion1 decks11 decks
8%synergy
Enchantments
Necrogen Communion
45%inclusion5 decks11 decks
44%synergy
Phyrexian Arena
36%inclusion4 decks11 decks
-3%synergy
Lord Skitter's Blessing
27%inclusion3 decks11 decks
27%synergy
Phyrexian Reclamation
18%inclusion2 decks11 decks
8%synergy
Dictate of Erebos
18%inclusion2 decks11 decks
7%synergy
Phyresis
18%inclusion2 decks11 decks
16%synergy
Kaya's Ghostform
18%inclusion2 decks11 decks
8%synergy
Demonic Embrace
18%inclusion2 decks11 decks
17%synergy
Oversold Cemetery
18%inclusion2 decks11 decks
13%synergy
Bad Moon
18%inclusion2 decks11 decks
15%synergy
Greed
9.1%inclusion1 decks11 decks
3%synergy
Black Market
9.1%inclusion1 decks11 decks
-11%synergy
Fear
9.1%inclusion1 decks11 decks
9%synergy
Glistening Oil
9.1%inclusion1 decks11 decks
8%synergy
Vampiric Rites
9.1%inclusion1 decks11 decks
3%synergy
Haunted One
9.1%inclusion1 decks11 decks
7%synergy
Grave Pact
9.1%inclusion1 decks11 decks
-10%synergy
Relic Putrescence
9.1%inclusion1 decks11 decks
9%synergy
Exquisite Blood
9.1%inclusion1 decks11 decks
-4%synergy
Snake Cult Initiation
9.1%inclusion1 decks11 decks
9%synergy
No Mercy
9.1%inclusion1 decks11 decks
2%synergy
Chthonian Nightmare
9.1%inclusion1 decks11 decks
6%synergy
Black Market Connections
9.1%inclusion1 decks11 decks
-16%synergy
Hissing Miasma
9.1%inclusion1 decks11 decks
9%synergy
Dark Prophecy
9.1%inclusion1 decks11 decks
5%synergy
Illicit Masquerade
9.1%inclusion1 decks11 decks
9%synergy
Planeswalkers
Vraska, Betrayal's Sting
45%inclusion5 decks11 decks
43%synergy
Liliana of the Dark Realms
18%inclusion2 decks11 decks
5%synergy
Utility Lands
Swarmyard
73%inclusion8 decks11 decks
67%synergy
Cabal Stronghold
55%inclusion6 decks11 decks
21%synergy
Cabal Coffers
55%inclusion6 decks11 decks
-0%synergy
Karn's Bastion
55%inclusion6 decks11 decks
51%synergy
Mudflat Village
55%inclusion6 decks11 decks
52%synergy
Bojuka Bog
45%inclusion5 decks11 decks
-2%synergy
Witch's Cottage
36%inclusion4 decks11 decks
12%synergy
Urborg, Tomb of Yawgmoth
36%inclusion4 decks11 decks
-1%synergy
Access Tunnel
36%inclusion4 decks11 decks
33%synergy
Rogue's Passage
36%inclusion4 decks11 decks
17%synergy
Nykthos, Shrine to Nyx
27%inclusion3 decks11 decks
-3%synergy
Three Tree City
27%inclusion3 decks11 decks
23%synergy
Phyrexian Tower
18%inclusion2 decks11 decks
-8%synergy
Crypt of Agadeem
18%inclusion2 decks11 decks
7%synergy
Inkmoth Nexus
18%inclusion2 decks11 decks
17%synergy
War Room
18%inclusion2 decks11 decks
2%synergy
Minas Morgul, Dark Fortress
18%inclusion2 decks11 decks
15%synergy
Thespian's Stage
18%inclusion2 decks11 decks
13%synergy
Castle Locthwain
18%inclusion2 decks11 decks
1%synergy
Shizo, Death's Storehouse
9.1%inclusion1 decks11 decks
-1%synergy
Mage-Ring Network
9.1%inclusion1 decks11 decks
9%synergy
Mortuary Mire
9.1%inclusion1 decks11 decks
-4%synergy
Vesuva
9.1%inclusion1 decks11 decks
6%synergy
Command Beacon
9.1%inclusion1 decks11 decks
1%synergy
Peat Bog
9.1%inclusion1 decks11 decks
7%synergy
Reliquary Tower
9.1%inclusion1 decks11 decks
-20%synergy
Mana Artifacts
Glistening Sphere
64%inclusion7 decks11 decks
63%synergy
Sol Ring
64%inclusion7 decks11 decks
-22%synergy
Arcane Signet
45%inclusion5 decks11 decks
-16%synergy
Staff of Compleation
36%inclusion4 decks11 decks
35%synergy
Patchwork Banner
27%inclusion3 decks11 decks
23%synergy
Caged Sun
9.1%inclusion1 decks11 decks
-1%synergy
Commander's Sphere
9.1%inclusion1 decks11 decks
2%synergy
Charcoal Diamond
9.1%inclusion1 decks11 decks
-13%synergy
Throne of Eldraine
9.1%inclusion1 decks11 decks
0%synergy
Thought Vessel
9.1%inclusion1 decks11 decks
-15%synergy
Mind Stone
9.1%inclusion1 decks11 decks
-18%synergy
Extraplanar Lens
9.1%inclusion1 decks11 decks
4%synergy
Lands
Swamp
100%inclusion11 decks11 decks
5%synergy
Path of Ancestry
45%inclusion5 decks11 decks
41%synergy
Cavern of Souls
27%inclusion3 decks11 decks
20%synergy
Malakir Rebirth
27%inclusion3 decks11 decks
3%synergy
Big Apple, 3 a.m.
10%inclusion1 decks10 decks
8%synergy
Escape Tunnel
9.1%inclusion1 decks11 decks
8%synergy
Urza's Cave
9.1%inclusion1 decks11 decks
1%synergy
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