Karumonix, the Rat King (Commander) - Relentless Rats

Karumonix, the Rat King
Rank #384
191decks
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
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Rat King, Pale Piper
17%inclusion1 decks6 decks
12%synergy
Big Apple, 3 a.m.
17%inclusion1 decks6 decks
15%synergy
Rat King, Verminister
13%inclusion1 decks8 decks
10%synergy
High Synergy Cards
Relentless Rats
95%inclusion182 decks191 decks
94%synergy
Piper of the Swarm
70%inclusion133 decks191 decks
63%synergy
Marrow-Gnawer
62%inclusion119 decks191 decks
59%synergy
Ogre Slumlord
66%inclusion127 decks191 decks
56%synergy
Pack Rat
59%inclusion112 decks191 decks
53%synergy
Thrumming Stone
53%inclusion102 decks191 decks
49%synergy
Blightbelly Rat
47%inclusion90 decks191 decks
44%synergy
Lord Skitter, Sewer King
50%inclusion96 decks191 decks
42%synergy
Ichor Rats
44%inclusion84 decks191 decks
41%synergy
Swarmyard
42%inclusion81 decks191 decks
37%synergy
Top Cards
Jet Medallion
58%inclusion111 decks191 decks
-4%synergy
Dark Ritual
53%inclusion102 decks191 decks
-13%synergy
Bontu's Monument
53%inclusion102 decks191 decks
25%synergy
Herald's Horn
42%inclusion80 decks191 decks
36%synergy
Phyrexian Arena
40%inclusion76 decks191 decks
0%synergy
Infectious Inquiry
39%inclusion74 decks191 decks
36%synergy
Patriarch's Bidding
38%inclusion73 decks191 decks
34%synergy
Typhoid Rats
37%inclusion70 decks191 decks
33%synergy
Ratcatcher
36%inclusion68 decks191 decks
32%synergy
Vanquisher's Banner
35%inclusion66 decks191 decks
31%synergy
Game Changers
Demonic Tutor
38%inclusion73 decks191 decks
11%synergy
Vampiric Tutor
28%inclusion54 decks191 decks
7%synergy
Bolas's Citadel
13%inclusion25 decks191 decks
-16%synergy
Imperial Seal
8.9%inclusion17 decks191 decks
2%synergy
Ancient Tomb
5.8%inclusion11 decks191 decks
-6%synergy
Creatures
Lord Skitter's Butcher
31%inclusion59 decks191 decks
28%synergy
Septic Rats
30%inclusion58 decks191 decks
28%synergy
Ashcoat of the Shadow Swarm
30%inclusion57 decks191 decks
26%synergy
Crypt Rats
29%inclusion56 decks191 decks
25%synergy
Rancid Rats
28%inclusion53 decks191 decks
25%synergy
Burglar Rat
26%inclusion49 decks191 decks
15%synergy
Persistent Marshstalker
23%inclusion30 decks131 decks
20%synergy
Tangled Colony
23%inclusion43 decks191 decks
19%synergy
Voracious Vermin
21%inclusion41 decks191 decks
18%synergy
Wave of Rats
21%inclusion41 decks191 decks
20%synergy
Ink-Eyes, Servant of Oni
21%inclusion40 decks191 decks
18%synergy
Swarm of Rats
21%inclusion40 decks191 decks
18%synergy
Gnat Miser
21%inclusion40 decks191 decks
18%synergy
Engine Rat
21%inclusion5 decks24 decks
19%synergy
Pestilence Rats
19%inclusion36 decks191 decks
17%synergy
Ayara, First of Locthwain
16%inclusion31 decks191 decks
-9%synergy
Stronghold Rats
16%inclusion31 decks191 decks
12%synergy
Gray Merchant of Asphodel
16%inclusion30 decks191 decks
-35%synergy
Twisted Sewer-Witch
15%inclusion28 decks191 decks
13%synergy
Crypt Ghast
15%inclusion28 decks191 decks
-33%synergy
Chittering Skitterling
14%inclusion27 decks191 decks
13%synergy
Ruin Rat
14%inclusion27 decks191 decks
13%synergy
Ravenous Rats
14%inclusion26 decks191 decks
12%synergy
Species Specialist
14%inclusion26 decks191 decks
10%synergy
Throat Slitter
14%inclusion26 decks191 decks
12%synergy
Locust Miser
14%inclusion26 decks191 decks
12%synergy
Nezumi Informant
13%inclusion24 decks191 decks
6%synergy
Nashi, Moon Sage's Scion
13%inclusion24 decks191 decks
9%synergy
Drainpipe Vermin
12%inclusion22 decks191 decks
10%synergy
Old Flitterfang
12%inclusion22 decks191 decks
10%synergy
Nezumi Prowler
11%inclusion21 decks191 decks
10%synergy
Changeling Outcast
10%inclusion20 decks191 decks
5%synergy
Valley Rotcaller
10%inclusion14 decks134 decks
8%synergy
Nezumi Graverobber
10%inclusion19 decks191 decks
9%synergy
Chittering Witch
10%inclusion19 decks191 decks
5%synergy
Innocuous Rat
10%inclusion9 decks93 decks
9%synergy
Gnawing Vermin
9.4%inclusion18 decks191 decks
8%synergy
Daggerfang Duo
9.3%inclusion12 decks129 decks
9%synergy
Adaptive Automaton
8.9%inclusion17 decks191 decks
8%synergy
Nezumi Bladeblesser
8.4%inclusion16 decks191 decks
8%synergy
Nezumi Cutthroat
8.4%inclusion16 decks191 decks
8%synergy
Patron of the Nezumi
7.9%inclusion15 decks191 decks
7%synergy
Rotting Rats
7.9%inclusion15 decks191 decks
5%synergy
Mukotai Ambusher
7.9%inclusion15 decks191 decks
7%synergy
Yawgmoth, Thran Physician
7.3%inclusion14 decks191 decks
-3%synergy
Thornplate Intimidator
6.9%inclusion9 decks130 decks
6%synergy
Refurbished Familiar
6.9%inclusion11 decks160 decks
5%synergy
Ruthless Radrat
6.8%inclusion13 decks191 decks
6%synergy
Filth
6.8%inclusion13 decks191 decks
4%synergy
Rat Colony
6.8%inclusion13 decks191 decks
1%synergy
Instants
Vraska's Fall
30%inclusion58 decks191 decks
27%synergy
Defile
29%inclusion55 decks191 decks
-8%synergy
Village Rites
27%inclusion51 decks191 decks
1%synergy
Go for the Throat
25%inclusion47 decks191 decks
2%synergy
Whisper of the Dross
24%inclusion45 decks191 decks
21%synergy
Corrupted Conviction
19%inclusion37 decks191 decks
7%synergy
Murder
17%inclusion32 decks191 decks
7%synergy
Deadly Rollick
16%inclusion31 decks191 decks
-8%synergy
Rat Out
16%inclusion31 decks191 decks
15%synergy
Foul-Tongue Shriek
16%inclusion31 decks191 decks
14%synergy
Deadly Dispute
15%inclusion29 decks191 decks
-11%synergy
Grim Affliction
14%inclusion27 decks191 decks
12%synergy
Tainted Strike
13%inclusion24 decks191 decks
10%synergy
Consuming Corruption
11%inclusion18 decks161 decks
-4%synergy
Gravepurge
11%inclusion21 decks191 decks
9%synergy
Withering Torment
10%inclusion10 decks96 decks
-21%synergy
Anoint with Affliction
10%inclusion19 decks191 decks
9%synergy
Infernal Grasp
10%inclusion19 decks191 decks
-15%synergy
Hero's Downfall
9.4%inclusion18 decks191 decks
3%synergy
Tragic Slip
8.9%inclusion17 decks191 decks
-11%synergy
Bitter Triumph
7.9%inclusion15 decks191 decks
-2%synergy
Doom Blade
7.3%inclusion14 decks191 decks
0%synergy
Cabal Ritual
7.3%inclusion14 decks191 decks
-11%synergy
Death Denied
7.3%inclusion14 decks191 decks
7%synergy
Sudden Spoiling
6.3%inclusion12 decks191 decks
-3%synergy
Archenemy's Charm
6.3%inclusion1 decks16 decks
-3%synergy
Raise the Draugr
5.8%inclusion11 decks191 decks
5%synergy
Baleful Mastery
5.8%inclusion11 decks191 decks
-3%synergy
Sorceries
Echoing Return
31%inclusion59 decks191 decks
28%synergy
Drown in Ichor
30%inclusion58 decks191 decks
26%synergy
Kindred Dominance
30%inclusion57 decks191 decks
25%synergy
Revenge of the Rats
27%inclusion18 decks67 decks
24%synergy
Feed the Swarm
26%inclusion49 decks191 decks
-25%synergy
Sign in Blood
25%inclusion47 decks191 decks
-11%synergy
Phyresis Outbreak
24%inclusion45 decks191 decks
22%synergy
Diabolic Tutor
23%inclusion43 decks191 decks
8%synergy
Crippling Fear
23%inclusion43 decks191 decks
19%synergy
Swarmyard Massacre
19%inclusion25 decks129 decks
17%synergy
Vat Emergence
19%inclusion37 decks191 decks
18%synergy
Night's Whisper
15%inclusion29 decks191 decks
-9%synergy
Grim Tutor
15%inclusion29 decks191 decks
4%synergy
Read the Bones
14%inclusion27 decks191 decks
-3%synergy
Damnation
14%inclusion27 decks191 decks
-6%synergy
Spread the Sickness
14%inclusion26 decks191 decks
13%synergy
Diabolic Intent
13%inclusion24 decks191 decks
-2%synergy
Fell
11%inclusion15 decks134 decks
8%synergy
Gruesome Fate
11%inclusion21 decks191 decks
9%synergy
Forever Young
10%inclusion20 decks191 decks
9%synergy
In Garruk's Wake
10%inclusion19 decks191 decks
6%synergy
Feed the Infection
9.4%inclusion18 decks191 decks
9%synergy
Living Death
9.4%inclusion18 decks191 decks
-1%synergy
Toxic Deluge
9.4%inclusion18 decks191 decks
-27%synergy
Victimize
8.9%inclusion17 decks191 decks
-18%synergy
Haunting Voyage
8.9%inclusion17 decks191 decks
8%synergy
Reanimate
8.4%inclusion16 decks191 decks
-31%synergy
Mutilate
7.9%inclusion15 decks191 decks
-9%synergy
Insatiable Avarice
7.9%inclusion15 decks191 decks
-4%synergy
Plague of Vermin
7.3%inclusion14 decks191 decks
5%synergy
Villainous Wrath
7.1%inclusion1 decks14 decks
5%synergy
Profane Tutor
6.8%inclusion13 decks191 decks
3%synergy
Lab Rats
6.8%inclusion13 decks191 decks
6%synergy
Pact of the Serpent
6.3%inclusion12 decks191 decks
5%synergy
Embrace Oblivion
6.3%inclusion1 decks16 decks
5%synergy
Exsanguinate
5.8%inclusion11 decks191 decks
-19%synergy
Bubbling Muck
5.2%inclusion10 decks191 decks
-10%synergy
Utility Artifacts
Coat of Arms
28%inclusion53 decks191 decks
25%synergy
Door of Destinies
25%inclusion47 decks191 decks
22%synergy
Chronicle of Victory
22%inclusion2 decks9 decks
19%synergy
Banner of Kinship
21%inclusion14 decks67 decks
19%synergy
Whip of Erebos
18%inclusion34 decks191 decks
7%synergy
Swiftfoot Boots
18%inclusion34 decks191 decks
-14%synergy
Skullclamp
17%inclusion33 decks191 decks
-5%synergy
Contagion Clasp
16%inclusion31 decks191 decks
14%synergy
Lightning Greaves
14%inclusion27 decks191 decks
-19%synergy
Icon of Ancestry
10%inclusion20 decks191 decks
9%synergy
Eldrazi Monument
10%inclusion20 decks191 decks
9%synergy
Contagion Engine
10%inclusion19 decks191 decks
8%synergy
Akroma's Memorial
9.4%inclusion18 decks191 decks
9%synergy
Ashnod's Altar
7.9%inclusion15 decks191 decks
-12%synergy
Grafted Exoskeleton
7.9%inclusion15 decks191 decks
7%synergy
Prosthetic Injector
6.3%inclusion12 decks191 decks
6%synergy
The Darkness Crystal
5.9%inclusion1 decks17 decks
-14%synergy
Obelisk of Urd
5.8%inclusion11 decks191 decks
5%synergy
Enchantments
Bad Moon
24%inclusion45 decks191 decks
20%synergy
Necrogen Communion
21%inclusion41 decks191 decks
20%synergy
Cover of Darkness
19%inclusion37 decks191 decks
16%synergy
Black Market
18%inclusion35 decks191 decks
-3%synergy
Grave Pact
15%inclusion29 decks191 decks
-4%synergy
Phyresis
15%inclusion29 decks191 decks
13%synergy
Black Market Connections
15%inclusion29 decks191 decks
-9%synergy
Oversold Cemetery
14%inclusion27 decks191 decks
9%synergy
Haunted One
10%inclusion20 decks191 decks
8%synergy
Dark Prophecy
9.4%inclusion18 decks191 decks
6%synergy
Tribute to Horobi
8.4%inclusion16 decks191 decks
7%synergy
Vampiric Rites
7.9%inclusion15 decks191 decks
2%synergy
The Meathook Massacre
7.3%inclusion14 decks191 decks
-10%synergy
Dictate of Erebos
7.3%inclusion14 decks191 decks
-4%synergy
Lord Skitter's Blessing
6.3%inclusion12 decks191 decks
6%synergy
Sothera, the Supervoid
6.3%inclusion1 decks16 decks
3%synergy
Phyrexian Reclamation
5.8%inclusion11 decks191 decks
-4%synergy
Greed
5.2%inclusion10 decks191 decks
-2%synergy
Planeswalkers
Vraska, Betrayal's Sting
23%inclusion43 decks191 decks
20%synergy
Liliana of the Dark Realms
13%inclusion25 decks191 decks
-1%synergy
Utility Lands
Cabal Coffers
43%inclusion83 decks191 decks
-11%synergy
Bojuka Bog
34%inclusion65 decks191 decks
-13%synergy
Rogue's Passage
29%inclusion55 decks191 decks
10%synergy
Karn's Bastion
28%inclusion54 decks191 decks
24%synergy
Cabal Stronghold
28%inclusion53 decks191 decks
-7%synergy
Urborg, Tomb of Yawgmoth
27%inclusion52 decks191 decks
-10%synergy
Reliquary Tower
25%inclusion47 decks191 decks
-6%synergy
Nykthos, Shrine to Nyx
23%inclusion43 decks191 decks
-7%synergy
Three Tree City
22%inclusion30 decks134 decks
18%synergy
Mudflat Village
22%inclusion31 decks140 decks
19%synergy
Witch's Cottage
20%inclusion38 decks191 decks
-5%synergy
Mortuary Mire
18%inclusion35 decks191 decks
5%synergy
Secret Tunnel
14%inclusion2 decks14 decks
13%synergy
Phyrexian Tower
13%inclusion25 decks191 decks
-12%synergy
Castle Locthwain
10%inclusion19 decks191 decks
-7%synergy
Shizo, Death's Storehouse
9.4%inclusion18 decks191 decks
-1%synergy
Crypt of Agadeem
8.9%inclusion17 decks191 decks
-2%synergy
War Room
8.4%inclusion16 decks191 decks
-8%synergy
Barren Moor
7.9%inclusion15 decks191 decks
-2%synergy
Access Tunnel
7.3%inclusion14 decks191 decks
4%synergy
Takenuma, Abandoned Mire
6.3%inclusion12 decks191 decks
-9%synergy
Mana Artifacts
Sol Ring
72%inclusion138 decks191 decks
-14%synergy
Arcane Signet
42%inclusion80 decks191 decks
-20%synergy
Patchwork Banner
25%inclusion33 decks130 decks
21%synergy
Glistening Sphere
19%inclusion37 decks191 decks
18%synergy
Charcoal Diamond
19%inclusion36 decks191 decks
-4%synergy
Thought Vessel
19%inclusion36 decks191 decks
-7%synergy
Caged Sun
18%inclusion35 decks191 decks
7%synergy
Mind Stone
17%inclusion32 decks191 decks
-12%synergy
Heraldic Banner
15%inclusion28 decks191 decks
9%synergy
Commander's Sphere
9.4%inclusion18 decks191 decks
1%synergy
Staff of Compleation
9.4%inclusion18 decks191 decks
8%synergy
Phyrexian Atlas
9.4%inclusion18 decks191 decks
9%synergy
Gauntlet of Power
8.4%inclusion16 decks191 decks
5%synergy
The Soul Stone
6.7%inclusion1 decks15 decks
-8%synergy
Throne of Eldraine
5.8%inclusion11 decks191 decks
-4%synergy
Fellwar Stone
5.8%inclusion11 decks191 decks
-9%synergy
Extraplanar Lens
5.8%inclusion11 decks191 decks
1%synergy
Lands
Swamp
98%inclusion188 decks191 decks
3%synergy
Path of Ancestry
23%inclusion43 decks191 decks
17%synergy
Myriad Landscape
15%inclusion28 decks191 decks
-11%synergy
Command Tower
11%inclusion21 decks191 decks
5%synergy
Cavern of Souls
10%inclusion19 decks191 decks
3%synergy
Vibrant Cityscape
7.1%inclusion1 decks14 decks
6%synergy
Daily Bugle Building
6.7%inclusion1 decks15 decks
6%synergy
Evolving Wilds
6.3%inclusion12 decks191 decks
3%synergy
Command Bridge
6.3%inclusion1 decks16 decks
6%synergy
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