Karumonix, the Rat King (Commander) - Relentless Rats

Karumonix, the Rat King
Rank #382
175decks
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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Relentless Rats
95%inclusion166 decks175 decks
93%synergy
Piper of the Swarm
68%inclusion119 decks175 decks
61%synergy
Marrow-Gnawer
62%inclusion109 decks175 decks
59%synergy
Ogre Slumlord
65%inclusion113 decks175 decks
55%synergy
Pack Rat
57%inclusion99 decks175 decks
51%synergy
Thrumming Stone
54%inclusion94 decks175 decks
50%synergy
Blightbelly Rat
48%inclusion84 decks175 decks
44%synergy
Ichor Rats
45%inclusion79 decks175 decks
42%synergy
Lord Skitter, Sewer King
50%inclusion87 decks175 decks
41%synergy
Infectious Inquiry
39%inclusion68 decks175 decks
36%synergy
Top Cards
Jet Medallion
59%inclusion104 decks175 decks
-2%synergy
Dark Ritual
52%inclusion91 decks175 decks
-15%synergy
Bontu's Monument
52%inclusion91 decks175 decks
24%synergy
Herald's Horn
41%inclusion72 decks175 decks
35%synergy
Phyrexian Arena
39%inclusion69 decks175 decks
0%synergy
Ratcatcher
38%inclusion66 decks175 decks
34%synergy
Typhoid Rats
37%inclusion65 decks175 decks
33%synergy
Patriarch's Bidding
36%inclusion63 decks175 decks
32%synergy
Vanquisher's Banner
33%inclusion57 decks175 decks
29%synergy
Lord Skitter's Butcher
31%inclusion55 decks175 decks
28%synergy
Game Changers
Demonic Tutor
37%inclusion65 decks175 decks
10%synergy
Vampiric Tutor
29%inclusion50 decks175 decks
8%synergy
Bolas's Citadel
13%inclusion22 decks175 decks
-16%synergy
Imperial Seal
8.6%inclusion15 decks175 decks
2%synergy
Ancient Tomb
5.7%inclusion10 decks175 decks
-6%synergy
Creatures
Septic Rats
31%inclusion55 decks175 decks
30%synergy
Crypt Rats
30%inclusion52 decks175 decks
25%synergy
Ashcoat of the Shadow Swarm
30%inclusion52 decks175 decks
26%synergy
Rancid Rats
28%inclusion49 decks175 decks
25%synergy
Burglar Rat
25%inclusion44 decks175 decks
14%synergy
Persistent Marshstalker
23%inclusion30 decks133 decks
20%synergy
Tangled Colony
22%inclusion39 decks175 decks
19%synergy
Voracious Vermin
22%inclusion39 decks175 decks
19%synergy
Ink-Eyes, Servant of Oni
22%inclusion38 decks175 decks
18%synergy
Swarm of Rats
22%inclusion38 decks175 decks
19%synergy
Wave of Rats
22%inclusion38 decks175 decks
20%synergy
Gnat Miser
21%inclusion36 decks175 decks
18%synergy
Pestilence Rats
20%inclusion35 decks175 decks
18%synergy
Engine Rat
19%inclusion5 decks26 decks
18%synergy
Ayara, First of Locthwain
17%inclusion29 decks175 decks
-9%synergy
Crypt Ghast
15%inclusion27 decks175 decks
-32%synergy
Stronghold Rats
15%inclusion27 decks175 decks
12%synergy
Gray Merchant of Asphodel
14%inclusion25 decks175 decks
-37%synergy
Twisted Sewer-Witch
14%inclusion25 decks175 decks
13%synergy
Ruin Rat
14%inclusion25 decks175 decks
13%synergy
Ravenous Rats
13%inclusion23 decks175 decks
11%synergy
Throat Slitter
13%inclusion23 decks175 decks
11%synergy
Locust Miser
13%inclusion23 decks175 decks
12%synergy
Chittering Skitterling
13%inclusion23 decks175 decks
12%synergy
Rat King, Pale Piper
13%inclusion1 decks8 decks
8%synergy
Species Specialist
12%inclusion21 decks175 decks
9%synergy
Nezumi Informant
12%inclusion21 decks175 decks
5%synergy
Drainpipe Vermin
12%inclusion21 decks175 decks
11%synergy
Nashi, Moon Sage's Scion
11%inclusion20 decks175 decks
8%synergy
Nezumi Prowler
11%inclusion19 decks175 decks
9%synergy
Old Flitterfang
11%inclusion19 decks175 decks
10%synergy
Valley Rotcaller
10%inclusion14 decks136 decks
8%synergy
Nezumi Graverobber
10%inclusion18 decks175 decks
9%synergy
Chittering Witch
10%inclusion18 decks175 decks
6%synergy
Rat King, Verminister
10%inclusion1 decks10 decks
7%synergy
Innocuous Rat
9.5%inclusion9 decks95 decks
8%synergy
Daggerfang Duo
9.2%inclusion12 decks131 decks
8%synergy
Gnawing Vermin
9.1%inclusion16 decks175 decks
8%synergy
Mukotai Ambusher
8.6%inclusion15 decks175 decks
8%synergy
Nezumi Bladeblesser
8.6%inclusion15 decks175 decks
8%synergy
Adaptive Automaton
8.6%inclusion15 decks175 decks
8%synergy
Nezumi Cutthroat
8.6%inclusion15 decks175 decks
8%synergy
Changeling Outcast
8.6%inclusion15 decks175 decks
3%synergy
Patron of the Nezumi
8.0%inclusion14 decks175 decks
7%synergy
Rat Colony
8.0%inclusion14 decks175 decks
2%synergy
Rotting Rats
7.4%inclusion13 decks175 decks
4%synergy
Yawgmoth, Thran Physician
7.4%inclusion13 decks175 decks
-3%synergy
Chittering Rats
6.9%inclusion12 decks175 decks
6%synergy
Ruthless Radrat
6.9%inclusion12 decks175 decks
6%synergy
Filth
6.9%inclusion12 decks175 decks
4%synergy
Instants
Vraska's Fall
31%inclusion54 decks175 decks
27%synergy
Defile
27%inclusion47 decks175 decks
-9%synergy
Village Rites
25%inclusion44 decks175 decks
0%synergy
Whisper of the Dross
25%inclusion43 decks175 decks
22%synergy
Go for the Throat
22%inclusion39 decks175 decks
-1%synergy
Rat Out
17%inclusion29 decks175 decks
15%synergy
Murder
17%inclusion29 decks175 decks
6%synergy
Corrupted Conviction
17%inclusion29 decks175 decks
4%synergy
Foul-Tongue Shriek
16%inclusion28 decks175 decks
14%synergy
Grim Affliction
15%inclusion27 decks175 decks
13%synergy
Deadly Rollick
15%inclusion26 decks175 decks
-10%synergy
Deadly Dispute
14%inclusion24 decks175 decks
-12%synergy
Tainted Strike
13%inclusion23 decks175 decks
10%synergy
Consuming Corruption
11%inclusion18 decks163 decks
-5%synergy
Anoint with Affliction
10%inclusion18 decks175 decks
10%synergy
Withering Torment
10%inclusion10 decks98 decks
-21%synergy
Infernal Grasp
9.1%inclusion16 decks175 decks
-16%synergy
Hero's Downfall
8.6%inclusion15 decks175 decks
2%synergy
Gravepurge
8.6%inclusion15 decks175 decks
7%synergy
Tragic Slip
8.6%inclusion15 decks175 decks
-11%synergy
Bitter Triumph
8.0%inclusion14 decks175 decks
-2%synergy
Cabal Ritual
6.9%inclusion12 decks175 decks
-11%synergy
Sudden Spoiling
6.9%inclusion12 decks175 decks
-2%synergy
Raise the Draugr
6.3%inclusion11 decks175 decks
5%synergy
Death Denied
6.3%inclusion11 decks175 decks
6%synergy
Doom Blade
5.7%inclusion10 decks175 decks
-2%synergy
Archenemy's Charm
5.6%inclusion1 decks18 decks
-3%synergy
Baleful Mastery
5.1%inclusion9 decks175 decks
-3%synergy
Sorceries
Echoing Return
31%inclusion54 decks175 decks
28%synergy
Drown in Ichor
31%inclusion54 decks175 decks
27%synergy
Kindred Dominance
29%inclusion51 decks175 decks
24%synergy
Revenge of the Rats
26%inclusion18 decks69 decks
23%synergy
Diabolic Tutor
23%inclusion40 decks175 decks
9%synergy
Phyresis Outbreak
23%inclusion40 decks175 decks
21%synergy
Feed the Swarm
23%inclusion40 decks175 decks
-28%synergy
Sign in Blood
23%inclusion40 decks175 decks
-12%synergy
Crippling Fear
21%inclusion36 decks175 decks
18%synergy
Vat Emergence
20%inclusion35 decks175 decks
19%synergy
Swarmyard Massacre
19%inclusion25 decks131 decks
17%synergy
Grim Tutor
16%inclusion28 decks175 decks
4%synergy
Damnation
14%inclusion25 decks175 decks
-6%synergy
Read the Bones
14%inclusion24 decks175 decks
-3%synergy
Spread the Sickness
13%inclusion23 decks175 decks
12%synergy
Diabolic Intent
13%inclusion22 decks175 decks
-2%synergy
Night's Whisper
13%inclusion22 decks175 decks
-12%synergy
Fell
11%inclusion15 decks136 decks
8%synergy
Forever Young
10%inclusion18 decks175 decks
9%synergy
Gruesome Fate
10%inclusion18 decks175 decks
8%synergy
Reanimate
10%inclusion17 decks175 decks
-30%synergy
Toxic Deluge
10%inclusion17 decks175 decks
-27%synergy
Living Death
9.1%inclusion16 decks175 decks
-1%synergy
Victimize
8.6%inclusion15 decks175 decks
-18%synergy
Feed the Infection
8.6%inclusion15 decks175 decks
8%synergy
In Garruk's Wake
8.0%inclusion14 decks175 decks
4%synergy
Insatiable Avarice
8.0%inclusion14 decks175 decks
-4%synergy
Plague of Vermin
8.0%inclusion14 decks175 decks
6%synergy
Profane Tutor
6.9%inclusion12 decks175 decks
3%synergy
Lab Rats
6.9%inclusion12 decks175 decks
6%synergy
Haunting Voyage
6.3%inclusion11 decks175 decks
5%synergy
Exsanguinate
6.3%inclusion11 decks175 decks
-18%synergy
Pact of the Serpent
6.3%inclusion11 decks175 decks
5%synergy
Villainous Wrath
6.3%inclusion1 decks16 decks
4%synergy
Mutilate
5.7%inclusion10 decks175 decks
-11%synergy
Plague Wind
5.1%inclusion9 decks175 decks
4%synergy
Return from Extinction
5.1%inclusion9 decks175 decks
5%synergy
Geth's Summons
5.1%inclusion9 decks175 decks
5%synergy
Utility Artifacts
Chronicle of Victory
27%inclusion3 decks11 decks
24%synergy
Coat of Arms
26%inclusion45 decks175 decks
23%synergy
Door of Destinies
23%inclusion41 decks175 decks
21%synergy
Banner of Kinship
22%inclusion15 decks69 decks
20%synergy
Skullclamp
19%inclusion33 decks175 decks
-3%synergy
Swiftfoot Boots
17%inclusion30 decks175 decks
-14%synergy
Contagion Clasp
17%inclusion29 decks175 decks
14%synergy
Whip of Erebos
17%inclusion29 decks175 decks
6%synergy
Lightning Greaves
13%inclusion23 decks175 decks
-20%synergy
Contagion Engine
10%inclusion18 decks175 decks
8%synergy
Icon of Ancestry
9.1%inclusion16 decks175 decks
8%synergy
Akroma's Memorial
8.6%inclusion15 decks175 decks
8%synergy
Eldrazi Monument
8.6%inclusion15 decks175 decks
7%synergy
Ashnod's Altar
8.0%inclusion14 decks175 decks
-12%synergy
Grafted Exoskeleton
8.0%inclusion14 decks175 decks
7%synergy
Prosthetic Injector
6.9%inclusion12 decks175 decks
7%synergy
The Darkness Crystal
5.3%inclusion1 decks19 decks
-15%synergy
Obelisk of Urd
5.1%inclusion9 decks175 decks
4%synergy
Enchantments
Bad Moon
23%inclusion40 decks175 decks
20%synergy
Necrogen Communion
22%inclusion38 decks175 decks
20%synergy
Cover of Darkness
20%inclusion35 decks175 decks
17%synergy
Black Market
17%inclusion30 decks175 decks
-4%synergy
Phyresis
16%inclusion28 decks175 decks
14%synergy
Black Market Connections
15%inclusion27 decks175 decks
-9%synergy
Grave Pact
15%inclusion26 decks175 decks
-5%synergy
Oversold Cemetery
14%inclusion24 decks175 decks
8%synergy
Haunted One
10%inclusion17 decks175 decks
7%synergy
Dark Prophecy
10%inclusion17 decks175 decks
6%synergy
Dictate of Erebos
8.0%inclusion14 decks175 decks
-3%synergy
The Meathook Massacre
7.4%inclusion13 decks175 decks
-10%synergy
Tribute to Horobi
7.4%inclusion13 decks175 decks
6%synergy
Vampiric Rites
6.9%inclusion12 decks175 decks
1%synergy
Lord Skitter's Blessing
6.9%inclusion12 decks175 decks
6%synergy
Sothera, the Supervoid
5.6%inclusion1 decks18 decks
3%synergy
Greed
5.1%inclusion9 decks175 decks
-2%synergy
Phyrexian Reclamation
5.1%inclusion9 decks175 decks
-5%synergy
Planeswalkers
Vraska, Betrayal's Sting
22%inclusion39 decks175 decks
20%synergy
Liliana of the Dark Realms
14%inclusion24 decks175 decks
0%synergy
Utility Lands
Cabal Coffers
43%inclusion75 decks175 decks
-12%synergy
Swarmyard
41%inclusion71 decks175 decks
35%synergy
Bojuka Bog
34%inclusion60 decks175 decks
-13%synergy
Karn's Bastion
29%inclusion51 decks175 decks
25%synergy
Rogue's Passage
29%inclusion51 decks175 decks
10%synergy
Urborg, Tomb of Yawgmoth
26%inclusion46 decks175 decks
-11%synergy
Cabal Stronghold
25%inclusion44 decks175 decks
-9%synergy
Reliquary Tower
23%inclusion41 decks175 decks
-7%synergy
Three Tree City
22%inclusion30 decks136 decks
17%synergy
Mudflat Village
22%inclusion31 decks142 decks
19%synergy
Nykthos, Shrine to Nyx
21%inclusion36 decks175 decks
-9%synergy
Witch's Cottage
20%inclusion35 decks175 decks
-5%synergy
Mortuary Mire
18%inclusion32 decks175 decks
5%synergy
Phyrexian Tower
14%inclusion24 decks175 decks
-12%synergy
Secret Tunnel
13%inclusion2 decks16 decks
11%synergy
Castle Locthwain
10%inclusion17 decks175 decks
-7%synergy
Shizo, Death's Storehouse
9.1%inclusion16 decks175 decks
-1%synergy
Crypt of Agadeem
9.1%inclusion16 decks175 decks
-2%synergy
War Room
8.6%inclusion15 decks175 decks
-7%synergy
Barren Moor
7.4%inclusion13 decks175 decks
-2%synergy
Access Tunnel
7.4%inclusion13 decks175 decks
4%synergy
Takenuma, Abandoned Mire
5.7%inclusion10 decks175 decks
-10%synergy
Mana Artifacts
Sol Ring
70%inclusion123 decks175 decks
-15%synergy
Arcane Signet
42%inclusion73 decks175 decks
-20%synergy
Patchwork Banner
26%inclusion34 decks132 decks
21%synergy
Glistening Sphere
20%inclusion35 decks175 decks
19%synergy
Thought Vessel
19%inclusion33 decks175 decks
-7%synergy
Charcoal Diamond
17%inclusion30 decks175 decks
-5%synergy
Caged Sun
17%inclusion29 decks175 decks
5%synergy
Mind Stone
15%inclusion27 decks175 decks
-13%synergy
Heraldic Banner
14%inclusion24 decks175 decks
8%synergy
Phyrexian Atlas
10%inclusion18 decks175 decks
10%synergy
Commander's Sphere
8.6%inclusion15 decks175 decks
0%synergy
Staff of Compleation
8.6%inclusion15 decks175 decks
7%synergy
Gauntlet of Power
8.0%inclusion14 decks175 decks
5%synergy
The Soul Stone
5.9%inclusion1 decks17 decks
-9%synergy
Throne of Eldraine
5.1%inclusion9 decks175 decks
-5%synergy
Fellwar Stone
5.1%inclusion9 decks175 decks
-9%synergy
Extraplanar Lens
5.1%inclusion9 decks175 decks
0%synergy
Lands
Swamp
99%inclusion173 decks175 decks
4%synergy
Path of Ancestry
23%inclusion40 decks175 decks
18%synergy
Myriad Landscape
13%inclusion23 decks175 decks
-12%synergy
Big Apple, 3 a.m.
13%inclusion1 decks8 decks
10%synergy
Command Tower
11%inclusion20 decks175 decks
6%synergy
Cavern of Souls
10%inclusion18 decks175 decks
4%synergy
Evolving Wilds
6.3%inclusion11 decks175 decks
3%synergy
Vibrant Cityscape
6.3%inclusion1 decks16 decks
5%synergy
Daily Bugle Building
5.9%inclusion1 decks17 decks
5%synergy
Command Bridge
5.6%inclusion1 decks18 decks
5%synergy
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