Karumonix, the Rat King (Commander) - Core Rats

Karumonix, the Rat King
Rank #381
33decks
As CommanderAs CardAverage DeckDecks
Bracket
All12345
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
Lands
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Emeritus of Woe
14%inclusion1 decks7 decks
7%synergy
High Synergy Cards
Piper of the Swarm
91%inclusion30 decks33 decks
84%synergy
Blightbelly Rat
79%inclusion26 decks33 decks
75%synergy
Ogre Slumlord
85%inclusion28 decks33 decks
75%synergy
Ichor Rats
76%inclusion25 decks33 decks
73%synergy
Pack Rat
79%inclusion26 decks33 decks
73%synergy
Typhoid Rats
73%inclusion24 decks33 decks
69%synergy
Drown in Ichor
73%inclusion24 decks33 decks
69%synergy
Rancid Rats
67%inclusion22 decks33 decks
64%synergy
Swarmyard
70%inclusion23 decks33 decks
64%synergy
Septic Rats
64%inclusion21 decks33 decks
62%synergy
Top Cards
Lord Skitter, Sewer King
70%inclusion23 decks33 decks
61%synergy
Marrow-Gnawer
64%inclusion21 decks33 decks
60%synergy
Infectious Inquiry
64%inclusion21 decks33 decks
61%synergy
Vraska's Fall
61%inclusion20 decks33 decks
57%synergy
Crypt Rats
58%inclusion19 decks33 decks
53%synergy
Lord Skitter's Butcher
58%inclusion19 decks33 decks
54%synergy
Dark Ritual
58%inclusion19 decks33 decks
-9%synergy
Jet Medallion
58%inclusion19 decks33 decks
-4%synergy
Rat Colony
58%inclusion19 decks33 decks
52%synergy
Bontu's Monument
55%inclusion18 decks33 decks
26%synergy
Creatures
Tangled Colony
52%inclusion17 decks33 decks
48%synergy
Voracious Vermin
52%inclusion17 decks33 decks
49%synergy
Gnat Miser
48%inclusion16 decks33 decks
46%synergy
Persistent Marshstalker
45%inclusion15 decks33 decks
42%synergy
Chittering Skitterling
45%inclusion15 decks33 decks
45%synergy
Wave of Rats
45%inclusion15 decks33 decks
44%synergy
Stronghold Rats
45%inclusion15 decks33 decks
42%synergy
Engine Rat
42%inclusion14 decks33 decks
41%synergy
Ashcoat of the Shadow Swarm
42%inclusion14 decks33 decks
39%synergy
Ratcatcher
42%inclusion14 decks33 decks
39%synergy
Burglar Rat
39%inclusion13 decks33 decks
29%synergy
Ruin Rat
36%inclusion12 decks33 decks
35%synergy
Locust Miser
33%inclusion11 decks33 decks
32%synergy
Swarm of Rats
30%inclusion10 decks33 decks
28%synergy
Twisted Sewer-Witch
30%inclusion10 decks33 decks
29%synergy
Nezumi Cutthroat
30%inclusion10 decks33 decks
30%synergy
Changeling Outcast
30%inclusion10 decks33 decks
25%synergy
Old Flitterfang
30%inclusion10 decks33 decks
29%synergy
Rat King, Pale Piper
28%inclusion5 decks18 decks
23%synergy
Species Specialist
27%inclusion9 decks33 decks
24%synergy
Ink-Eyes, Servant of Oni
27%inclusion9 decks33 decks
24%synergy
Rat King, Verminister
27%inclusion6 decks22 decks
24%synergy
Pestilence Rats
24%inclusion8 decks33 decks
22%synergy
Nashi, Moon Sage's Scion
24%inclusion8 decks33 decks
20%synergy
Ravenous Rats
21%inclusion7 decks33 decks
19%synergy
Gnawing Vermin
21%inclusion7 decks33 decks
20%synergy
Ruthless Radrat
21%inclusion7 decks33 decks
20%synergy
Ayara, First of Locthwain
21%inclusion7 decks33 decks
-4%synergy
Mukotai Ambusher
21%inclusion7 decks33 decks
20%synergy
Razortooth Rats
21%inclusion7 decks33 decks
21%synergy
Chittering Witch
21%inclusion7 decks33 decks
17%synergy
Crypt Ghast
21%inclusion7 decks33 decks
-26%synergy
Nezumi Prowler
21%inclusion7 decks33 decks
20%synergy
Undercity Dire Rat
20%inclusion6 decks30 decks
18%synergy
Relentless Rats
18%inclusion6 decks33 decks
16%synergy
Throat Slitter
18%inclusion6 decks33 decks
16%synergy
Valley Rotcaller
18%inclusion6 decks33 decks
15%synergy
Nezumi Informant
18%inclusion6 decks33 decks
12%synergy
Skullsnatcher
15%inclusion5 decks33 decks
14%synergy
Elephant-Rat
13%inclusion4 decks30 decks
13%synergy
Rotting Rats
12%inclusion4 decks33 decks
9%synergy
Drainpipe Vermin
12%inclusion4 decks33 decks
11%synergy
Refurbished Familiar
9.1%inclusion3 decks33 decks
7%synergy
Chittering Rats
9.1%inclusion3 decks33 decks
9%synergy
Rabid Rats
9.1%inclusion3 decks33 decks
9%synergy
Nezumi Ronin
9.1%inclusion3 decks33 decks
9%synergy
Innocuous Rat
9.1%inclusion3 decks33 decks
8%synergy
Nezumi Graverobber
9.1%inclusion3 decks33 decks
8%synergy
Thornplate Intimidator
9.1%inclusion3 decks33 decks
8%synergy
Gray Merchant of Asphodel
9.1%inclusion3 decks33 decks
-42%synergy
Instants
Whisper of the Dross
48%inclusion16 decks33 decks
46%synergy
Village Rites
39%inclusion13 decks33 decks
14%synergy
Defile
39%inclusion13 decks33 decks
3%synergy
Grim Affliction
33%inclusion11 decks33 decks
31%synergy
Rat Out
27%inclusion9 decks33 decks
26%synergy
Anoint with Affliction
27%inclusion9 decks33 decks
27%synergy
Go for the Throat
24%inclusion8 decks33 decks
1%synergy
Not Dead After All
18%inclusion6 decks33 decks
7%synergy
Deadly Dispute
18%inclusion6 decks33 decks
-8%synergy
Tainted Strike
18%inclusion6 decks33 decks
15%synergy
Corrupted Conviction
15%inclusion5 decks33 decks
3%synergy
Undying Malice
12%inclusion4 decks33 decks
2%synergy
Murder
12%inclusion4 decks33 decks
2%synergy
Infernal Grasp
12%inclusion4 decks33 decks
-13%synergy
Malakir Rebirth
12%inclusion4 decks33 decks
-11%synergy
Offer Immortality
12%inclusion4 decks33 decks
10%synergy
Withering Torment
12%inclusion4 decks33 decks
-19%synergy
Sheoldred's Edict
9.1%inclusion3 decks33 decks
-6%synergy
Supernatural Stamina
9.1%inclusion3 decks33 decks
2%synergy
Costly Plunder
9.1%inclusion3 decks33 decks
7%synergy
Black Sun's Twilight
9.1%inclusion3 decks33 decks
6%synergy
Sudden Spoiling
9.1%inclusion3 decks33 decks
0%synergy
Feign Death
9.1%inclusion3 decks33 decks
1%synergy
Tragic Slip
9.1%inclusion3 decks33 decks
-11%synergy
Unbury
8.7%inclusion2 decks23 decks
8%synergy
Alesha's Legacy
6.5%inclusion2 decks31 decks
5%synergy
Fell the Profane
6.1%inclusion2 decks33 decks
-13%synergy
Imp's Mischief
6.1%inclusion2 decks33 decks
-19%synergy
Snuff Out
6.1%inclusion2 decks33 decks
-7%synergy
Consuming Corruption
6.1%inclusion2 decks33 decks
-10%synergy
Battle-Rage Blessing
6.1%inclusion2 decks33 decks
5%synergy
Doom Blade
6.1%inclusion2 decks33 decks
-1%synergy
Cabal Ritual
6.1%inclusion2 decks33 decks
-12%synergy
Culling the Weak
6.1%inclusion2 decks33 decks
-10%synergy
Altar's Reap
6.1%inclusion2 decks33 decks
4%synergy
Virulent Wound
6.1%inclusion2 decks33 decks
6%synergy
Bitter Triumph
6.1%inclusion2 decks33 decks
-4%synergy
Raise the Draugr
6.1%inclusion2 decks33 decks
5%synergy
Darkness
6.1%inclusion2 decks33 decks
-4%synergy
Death Denied
6.1%inclusion2 decks33 decks
5%synergy
Foul-Tongue Shriek
6.1%inclusion2 decks33 decks
4%synergy
Sorceries
Phyresis Outbreak
52%inclusion17 decks33 decks
50%synergy
Feed the Swarm
48%inclusion16 decks33 decks
-2%synergy
Vat Emergence
36%inclusion12 decks33 decks
35%synergy
Revenge of the Rats
33%inclusion11 decks33 decks
30%synergy
Crippling Fear
33%inclusion11 decks33 decks
30%synergy
Patriarch's Bidding
30%inclusion10 decks33 decks
26%synergy
Sign in Blood
30%inclusion10 decks33 decks
-5%synergy
Night's Whisper
27%inclusion9 decks33 decks
3%synergy
Kindred Dominance
27%inclusion9 decks33 decks
23%synergy
Swarmyard Massacre
24%inclusion8 decks33 decks
22%synergy
Spread the Sickness
18%inclusion6 decks33 decks
17%synergy
Diabolic Tutor
18%inclusion6 decks33 decks
4%synergy
Feed the Infection
18%inclusion6 decks33 decks
18%synergy
Unearth
18%inclusion6 decks33 decks
9%synergy
Read the Bones
18%inclusion6 decks33 decks
1%synergy
Victimize
12%inclusion4 decks33 decks
-15%synergy
Echoing Return
12%inclusion4 decks33 decks
9%synergy
Exsanguinate
12%inclusion4 decks33 decks
-13%synergy
Toxic Deluge
12%inclusion4 decks33 decks
-25%synergy
Bubbling Muck
9.1%inclusion3 decks33 decks
-6%synergy
Mutilate
9.1%inclusion3 decks33 decks
-8%synergy
Living Death
9.1%inclusion3 decks33 decks
-1%synergy
Geth's Summons
9.1%inclusion3 decks33 decks
9%synergy
Plague of Vermin
9.1%inclusion3 decks33 decks
7%synergy
Splinter's Technique
9.1%inclusion2 decks22 decks
7%synergy
Torment of Hailfire
6.1%inclusion2 decks33 decks
-9%synergy
Return from Extinction
6.1%inclusion2 decks33 decks
6%synergy
Decree of Pain
6.1%inclusion2 decks33 decks
1%synergy
Reanimate
6.1%inclusion2 decks33 decks
-34%synergy
In Garruk's Wake
6.1%inclusion2 decks33 decks
2%synergy
Corrupt
6.1%inclusion2 decks33 decks
3%synergy
Gruesome Realization
6.1%inclusion2 decks33 decks
4%synergy
Lab Rats
6.1%inclusion2 decks33 decks
6%synergy
Disentomb
6.1%inclusion2 decks33 decks
5%synergy
Utility Artifacts
Herald's Horn
52%inclusion17 decks33 decks
46%synergy
Swiftfoot Boots
33%inclusion11 decks33 decks
2%synergy
Contagion Clasp
30%inclusion10 decks33 decks
28%synergy
Skullclamp
27%inclusion9 decks33 decks
5%synergy
Vanquisher's Banner
27%inclusion9 decks33 decks
23%synergy
Whip of Erebos
21%inclusion7 decks33 decks
10%synergy
Door of Destinies
21%inclusion7 decks33 decks
19%synergy
Thrumming Stone
21%inclusion7 decks33 decks
17%synergy
Contagion Engine
18%inclusion6 decks33 decks
16%synergy
Prosthetic Injector
18%inclusion6 decks33 decks
18%synergy
Lightning Greaves
18%inclusion6 decks33 decks
-15%synergy
Chronicle of Victory
13%inclusion3 decks23 decks
10%synergy
Vat of Rebirth
9.1%inclusion3 decks33 decks
6%synergy
Ashnod's Altar
9.1%inclusion3 decks33 decks
-11%synergy
Hall of Triumph
9.1%inclusion3 decks33 decks
9%synergy
Akroma's Memorial
9.1%inclusion3 decks33 decks
8%synergy
Grafted Exoskeleton
9.1%inclusion3 decks33 decks
8%synergy
The Darkness Crystal
6.7%inclusion2 decks30 decks
-13%synergy
Coat of Arms
6.1%inclusion2 decks33 decks
3%synergy
Stoneforge Masterwork
6.1%inclusion2 decks33 decks
6%synergy
Blade of Selves
6.1%inclusion2 decks33 decks
5%synergy
Mask of Avacyn
6.1%inclusion2 decks33 decks
5%synergy
Urza's Incubator
6.1%inclusion2 decks33 decks
4%synergy
Nihil Spellbomb
6.1%inclusion2 decks33 decks
5%synergy
Basilisk Collar
6.1%inclusion2 decks33 decks
3%synergy
Enchantments
Necrogen Communion
45%inclusion15 decks33 decks
44%synergy
Cover of Darkness
36%inclusion12 decks33 decks
33%synergy
Phyrexian Arena
33%inclusion11 decks33 decks
-6%synergy
Phyresis
24%inclusion8 decks33 decks
22%synergy
Oversold Cemetery
24%inclusion8 decks33 decks
19%synergy
Vampiric Rites
21%inclusion7 decks33 decks
15%synergy
Grave Pact
21%inclusion7 decks33 decks
2%synergy
Black Market Connections
18%inclusion6 decks33 decks
-6%synergy
Haunted One
15%inclusion5 decks33 decks
12%synergy
Phyrexian Reclamation
12%inclusion4 decks33 decks
2%synergy
Black Market
9.1%inclusion3 decks33 decks
-12%synergy
Dictate of Erebos
9.1%inclusion3 decks33 decks
-2%synergy
Demonic Vigor
6.1%inclusion2 decks33 decks
6%synergy
The Meathook Massacre
6.1%inclusion2 decks33 decks
-11%synergy
Underworld Connections
6.1%inclusion2 decks33 decks
4%synergy
Glistening Oil
6.1%inclusion2 decks33 decks
5%synergy
Tribute to Horobi
6.1%inclusion2 decks33 decks
5%synergy
Eternal Thirst
6.1%inclusion2 decks33 decks
4%synergy
Kaya's Ghostform
6.1%inclusion2 decks33 decks
-4%synergy
Demonic Embrace
6.1%inclusion2 decks33 decks
5%synergy
Lord Skitter's Blessing
6.1%inclusion2 decks33 decks
5%synergy
Bad Moon
6.1%inclusion2 decks33 decks
3%synergy
Planeswalkers
Vraska, Betrayal's Sting
33%inclusion11 decks33 decks
31%synergy
Liliana of the Dark Realms
24%inclusion8 decks33 decks
10%synergy
Utility Lands
Karn's Bastion
52%inclusion17 decks33 decks
48%synergy
Rogue's Passage
48%inclusion16 decks33 decks
29%synergy
Bojuka Bog
45%inclusion15 decks33 decks
-1%synergy
Mudflat Village
45%inclusion15 decks33 decks
43%synergy
Cabal Stronghold
39%inclusion13 decks33 decks
5%synergy
Cabal Coffers
33%inclusion11 decks33 decks
-21%synergy
Three Tree City
33%inclusion11 decks33 decks
29%synergy
Mortuary Mire
30%inclusion10 decks33 decks
17%synergy
Reliquary Tower
30%inclusion10 decks33 decks
0%synergy
Urborg, Tomb of Yawgmoth
30%inclusion10 decks33 decks
-7%synergy
Witch's Cottage
24%inclusion8 decks33 decks
0%synergy
Secret Tunnel
22%inclusion6 decks27 decks
21%synergy
Access Tunnel
21%inclusion7 decks33 decks
18%synergy
Nykthos, Shrine to Nyx
18%inclusion6 decks33 decks
-12%synergy
Shizo, Death's Storehouse
15%inclusion5 decks33 decks
5%synergy
Phyrexian Tower
15%inclusion5 decks33 decks
-10%synergy
Barren Moor
15%inclusion5 decks33 decks
5%synergy
The Dross Pits
15%inclusion5 decks33 decks
14%synergy
Castle Locthwain
15%inclusion5 decks33 decks
-2%synergy
Crypt of Agadeem
12%inclusion4 decks33 decks
1%synergy
War Room
12%inclusion4 decks33 decks
-4%synergy
Minas Morgul, Dark Fortress
12%inclusion4 decks33 decks
9%synergy
Desert of the Glorified
9.1%inclusion3 decks33 decks
6%synergy
Memorial to Folly
9.1%inclusion3 decks33 decks
6%synergy
Susur Secundi, Void Altar
6.7%inclusion2 decks30 decks
-1%synergy
Vault of Whispers
6.1%inclusion2 decks33 decks
1%synergy
Mage-Ring Network
6.1%inclusion2 decks33 decks
6%synergy
Inkmoth Nexus
6.1%inclusion2 decks33 decks
5%synergy
Piranha Marsh
6.1%inclusion2 decks33 decks
5%synergy
Polluted Mire
6.1%inclusion2 decks33 decks
2%synergy
Deserted Temple
6.1%inclusion2 decks33 decks
2%synergy
Blighted Fen
6.1%inclusion2 decks33 decks
5%synergy
Temple of the False God
6.1%inclusion2 decks33 decks
-2%synergy
Mana Artifacts
Sol Ring
61%inclusion20 decks33 decks
-25%synergy
Arcane Signet
42%inclusion14 decks33 decks
-19%synergy
Glistening Sphere
42%inclusion14 decks33 decks
41%synergy
Staff of Compleation
21%inclusion7 decks33 decks
20%synergy
Heraldic Banner
18%inclusion6 decks33 decks
13%synergy
Patchwork Banner
18%inclusion6 decks33 decks
14%synergy
Charcoal Diamond
15%inclusion5 decks33 decks
-7%synergy
Phyrexian Atlas
15%inclusion5 decks33 decks
15%synergy
Mind Stone
12%inclusion4 decks33 decks
-17%synergy
The Soul Stone
10%inclusion3 decks30 decks
-5%synergy
Caged Sun
9.1%inclusion3 decks33 decks
-2%synergy
Gauntlet of Power
9.1%inclusion3 decks33 decks
6%synergy
Thought Vessel
9.1%inclusion3 decks33 decks
-16%synergy
Throne of Eldraine
6.1%inclusion2 decks33 decks
-4%synergy
Lands
Swamp
100%inclusion33 decks33 decks
5%synergy
Path of Ancestry
42%inclusion14 decks33 decks
37%synergy
Myriad Landscape
27%inclusion9 decks33 decks
2%synergy
Cavern of Souls
18%inclusion6 decks33 decks
11%synergy
Malakir Rebirth
12%inclusion4 decks33 decks
-11%synergy
Big Apple, 3 a.m.
11%inclusion2 decks18 decks
9%synergy
Escape Tunnel
9.1%inclusion3 decks33 decks
8%synergy
Fell the Profane
6.1%inclusion2 decks33 decks
-13%synergy
Command Tower
6.1%inclusion2 decks33 decks
0%synergy
Terramorphic Expanse
6.1%inclusion2 decks33 decks
3%synergy
Urza's Cave
6.1%inclusion2 decks33 decks
-2%synergy
Evolving Wilds
6.1%inclusion2 decks33 decks
2%synergy
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