Karumonix, the Rat King (Commander) - Relentless Rats

Karumonix, the Rat King
Rank #400
136decks
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.
Deck Filters
Cardsphere
Archidekt
Commander Spellbook
Moxfield
Scryfall
MTGStocks
High Synergy Cards
Top Cards
Game Changers
Creatures
Instants
Sorceries
Utility Artifacts
Enchantments
Planeswalkers
Utility Lands
Mana Artifacts
Lands
Back to Top
Relentless Rats
91%inclusion124 decks136 decks
89%synergy
Marrow-Gnawer
68%inclusion93 decks136 decks
65%synergy
Piper of the Swarm
68%inclusion92 decks136 decks
61%synergy
Ogre Slumlord
63%inclusion86 decks136 decks
53%synergy
Pack Rat
57%inclusion78 decks136 decks
51%synergy
Blightbelly Rat
51%inclusion69 decks136 decks
47%synergy
Thrumming Stone
51%inclusion69 decks136 decks
47%synergy
Ichor Rats
48%inclusion65 decks136 decks
45%synergy
Lord Skitter, Sewer King
53%inclusion72 decks136 decks
45%synergy
Swarmyard
45%inclusion61 decks136 decks
39%synergy
Top Cards
Jet Medallion
59%inclusion80 decks136 decks
-3%synergy
Bontu's Monument
54%inclusion74 decks136 decks
26%synergy
Dark Ritual
51%inclusion70 decks136 decks
-16%synergy
Typhoid Rats
40%inclusion55 decks136 decks
37%synergy
Ratcatcher
40%inclusion54 decks136 decks
36%synergy
Herald's Horn
39%inclusion53 decks136 decks
33%synergy
Patriarch's Bidding
38%inclusion51 decks136 decks
33%synergy
Infectious Inquiry
37%inclusion50 decks136 decks
34%synergy
Phyrexian Arena
37%inclusion50 decks136 decks
-3%synergy
Septic Rats
35%inclusion48 decks136 decks
33%synergy
Game Changers
Demonic Tutor
37%inclusion50 decks136 decks
10%synergy
Vampiric Tutor
29%inclusion39 decks136 decks
8%synergy
Bolas's Citadel
10%inclusion13 decks136 decks
-19%synergy
Imperial Seal
8.8%inclusion12 decks136 decks
2%synergy
Ancient Tomb
5.9%inclusion8 decks136 decks
-6%synergy
Necropotence
5.9%inclusion8 decks136 decks
-9%synergy
Creatures
Ashcoat of the Shadow Swarm
32%inclusion44 decks136 decks
29%synergy
Crypt Rats
31%inclusion42 decks136 decks
26%synergy
Lord Skitter's Butcher
31%inclusion42 decks136 decks
28%synergy
Burglar Rat
29%inclusion39 decks136 decks
18%synergy
Rancid Rats
28%inclusion38 decks136 decks
26%synergy
Voracious Vermin
26%inclusion35 decks136 decks
23%synergy
Ink-Eyes, Servant of Oni
25%inclusion34 decks136 decks
22%synergy
Rat King, Verminister
25%inclusion4 decks16 decks
22%synergy
Tangled Colony
24%inclusion32 decks136 decks
21%synergy
Persistent Marshstalker
24%inclusion32 decks136 decks
21%synergy
Swarm of Rats
24%inclusion32 decks136 decks
21%synergy
Wave of Rats
24%inclusion32 decks136 decks
22%synergy
Pestilence Rats
23%inclusion31 decks136 decks
21%synergy
Gnat Miser
22%inclusion30 decks136 decks
19%synergy
Rat King, Pale Piper
21%inclusion3 decks14 decks
17%synergy
Engine Rat
20%inclusion6 decks30 decks
18%synergy
Stronghold Rats
17%inclusion23 decks136 decks
13%synergy
Ayara, First of Locthwain
16%inclusion22 decks136 decks
-9%synergy
Chittering Skitterling
16%inclusion22 decks136 decks
15%synergy
Ruin Rat
16%inclusion22 decks136 decks
15%synergy
Throat Slitter
15%inclusion21 decks136 decks
14%synergy
Gray Merchant of Asphodel
15%inclusion20 decks136 decks
-36%synergy
Tunnel Rats
14%inclusion2 decks14 decks
14%synergy
Ravenous Rats
14%inclusion19 decks136 decks
12%synergy
Crypt Ghast
14%inclusion19 decks136 decks
-33%synergy
Locust Miser
14%inclusion19 decks136 decks
12%synergy
Rat Colony
13%inclusion18 decks136 decks
8%synergy
Twisted Sewer-Witch
13%inclusion17 decks136 decks
11%synergy
Drainpipe Vermin
13%inclusion17 decks136 decks
11%synergy
Gnawing Vermin
12%inclusion16 decks136 decks
10%synergy
Mukotai Ambusher
12%inclusion16 decks136 decks
11%synergy
Chittering Witch
12%inclusion16 decks136 decks
7%synergy
Nashi, Moon Sage's Scion
12%inclusion16 decks136 decks
8%synergy
Nezumi Informant
11%inclusion15 decks136 decks
5%synergy
Nezumi Prowler
11%inclusion15 decks136 decks
10%synergy
Old Flitterfang
11%inclusion15 decks136 decks
10%synergy
Species Specialist
11%inclusion15 decks136 decks
8%synergy
Valley Rotcaller
11%inclusion15 decks136 decks
8%synergy
Daggerfang Duo
10%inclusion13 decks134 decks
9%synergy
Nezumi Cutthroat
10%inclusion13 decks136 decks
9%synergy
Innocuous Rat
9.1%inclusion9 decks99 decks
8%synergy
Nezumi Bladeblesser
8.8%inclusion12 decks136 decks
8%synergy
Adaptive Automaton
8.8%inclusion12 decks136 decks
8%synergy
Undercity Dire Rat
8.7%inclusion2 decks23 decks
7%synergy
Patron of the Nezumi
8.1%inclusion11 decks136 decks
8%synergy
Refurbished Familiar
8.1%inclusion11 decks136 decks
6%synergy
Chittering Rats
8.1%inclusion11 decks136 decks
8%synergy
Nezumi Graverobber
8.1%inclusion11 decks136 decks
7%synergy
Rotting Rats
8.1%inclusion11 decks136 decks
5%synergy
Yawgmoth, Thran Physician
8.1%inclusion11 decks136 decks
-2%synergy
Instants
Vraska's Fall
32%inclusion44 decks136 decks
29%synergy
Defile
25%inclusion34 decks136 decks
-11%synergy
Whisper of the Dross
24%inclusion33 decks136 decks
22%synergy
Go for the Throat
22%inclusion30 decks136 decks
-1%synergy
Village Rites
21%inclusion29 decks136 decks
-4%synergy
Rat Out
21%inclusion28 decks136 decks
19%synergy
Foul-Tongue Shriek
17%inclusion23 decks136 decks
15%synergy
Grim Affliction
16%inclusion22 decks136 decks
14%synergy
Murder
16%inclusion22 decks136 decks
6%synergy
Deadly Rollick
15%inclusion21 decks136 decks
-10%synergy
Corrupted Conviction
15%inclusion20 decks136 decks
2%synergy
Tainted Strike
13%inclusion18 decks136 decks
10%synergy
Deadly Dispute
13%inclusion17 decks136 decks
-14%synergy
Consuming Corruption
10%inclusion14 decks136 decks
-5%synergy
Anoint with Affliction
10%inclusion14 decks136 decks
10%synergy
Withering Torment
10%inclusion10 decks102 decks
-22%synergy
Tragic Slip
10%inclusion13 decks136 decks
-10%synergy
Infernal Grasp
10%inclusion13 decks136 decks
-16%synergy
Hero's Downfall
8.8%inclusion12 decks136 decks
2%synergy
Gravepurge
8.8%inclusion12 decks136 decks
7%synergy
Rabid Attack
8.3%inclusion1 decks12 decks
8%synergy
Bitter Triumph
8.1%inclusion11 decks136 decks
-2%synergy
Cabal Ritual
8.1%inclusion11 decks136 decks
-11%synergy
Raise the Draugr
6.6%inclusion9 decks136 decks
6%synergy
Death Denied
6.6%inclusion9 decks136 decks
6%synergy
Sudden Spoiling
6.6%inclusion9 decks136 decks
-2%synergy
Stab
5.7%inclusion4 decks70 decks
5%synergy
Sorceries
Drown in Ichor
32%inclusion43 decks136 decks
28%synergy
Echoing Return
29%inclusion40 decks136 decks
26%synergy
Kindred Dominance
29%inclusion40 decks136 decks
25%synergy
Revenge of the Rats
27%inclusion20 decks73 decks
24%synergy
Phyresis Outbreak
25%inclusion34 decks136 decks
23%synergy
Crippling Fear
24%inclusion32 decks136 decks
21%synergy
Diabolic Tutor
23%inclusion31 decks136 decks
9%synergy
Feed the Swarm
22%inclusion30 decks136 decks
-28%synergy
Swarmyard Massacre
19%inclusion25 decks134 decks
16%synergy
Vat Emergence
18%inclusion25 decks136 decks
17%synergy
Sign in Blood
16%inclusion22 decks136 decks
-19%synergy
Damnation
16%inclusion22 decks136 decks
-4%synergy
Grim Tutor
14%inclusion19 decks136 decks
2%synergy
Spread the Sickness
13%inclusion18 decks136 decks
13%synergy
Reanimate
12%inclusion16 decks136 decks
-29%synergy
Diabolic Intent
11%inclusion15 decks136 decks
-4%synergy
Fell
11%inclusion15 decks136 decks
8%synergy
Gruesome Fate
11%inclusion15 decks136 decks
9%synergy
Victimize
10%inclusion14 decks136 decks
-17%synergy
Night's Whisper
10%inclusion14 decks136 decks
-15%synergy
Read the Bones
10%inclusion14 decks136 decks
-6%synergy
Living Death
10%inclusion13 decks136 decks
-1%synergy
Forever Young
10%inclusion13 decks136 decks
8%synergy
Toxic Deluge
8.8%inclusion12 decks136 decks
-28%synergy
Exsanguinate
8.1%inclusion11 decks136 decks
-17%synergy
In Garruk's Wake
8.1%inclusion11 decks136 decks
4%synergy
Plague of Vermin
7.4%inclusion10 decks136 decks
5%synergy
Haunting Voyage
6.6%inclusion9 decks136 decks
5%synergy
Insatiable Avarice
6.6%inclusion9 decks136 decks
-4%synergy
Lab Rats
6.6%inclusion9 decks136 decks
6%synergy
Splinter's Technique
6.3%inclusion1 decks16 decks
4%synergy
Plague Wind
5.9%inclusion8 decks136 decks
5%synergy
Return from Extinction
5.9%inclusion8 decks136 decks
5%synergy
Feed the Infection
5.9%inclusion8 decks136 decks
5%synergy
Geth's Summons
5.9%inclusion8 decks136 decks
5%synergy
Profane Tutor
5.1%inclusion7 decks136 decks
1%synergy
Mutilate
5.1%inclusion7 decks136 decks
-11%synergy
Pact of the Serpent
5.1%inclusion7 decks136 decks
4%synergy
Utility Artifacts
Vanquisher's Banner
31%inclusion42 decks136 decks
27%synergy
Coat of Arms
27%inclusion37 decks136 decks
25%synergy
Chronicle of Victory
25%inclusion4 decks16 decks
22%synergy
Door of Destinies
22%inclusion30 decks136 decks
20%synergy
Banner of Kinship
21%inclusion15 decks73 decks
18%synergy
Skullclamp
20%inclusion27 decks136 decks
-2%synergy
Whip of Erebos
19%inclusion26 decks136 decks
8%synergy
Contagion Clasp
18%inclusion24 decks136 decks
15%synergy
Swiftfoot Boots
17%inclusion23 decks136 decks
-15%synergy
Lightning Greaves
14%inclusion19 decks136 decks
-20%synergy
Icon of Ancestry
11%inclusion15 decks136 decks
10%synergy
Contagion Engine
10%inclusion14 decks136 decks
9%synergy
Grafted Exoskeleton
10%inclusion14 decks136 decks
9%synergy
Prosthetic Injector
10%inclusion13 decks136 decks
9%synergy
Eldrazi Monument
8.8%inclusion12 decks136 decks
7%synergy
Akroma's Memorial
8.1%inclusion11 decks136 decks
7%synergy
Ashnod's Altar
6.6%inclusion9 decks136 decks
-13%synergy
Obelisk of Urd
5.9%inclusion8 decks136 decks
5%synergy
Enchantments
Necrogen Communion
26%inclusion35 decks136 decks
24%synergy
Cover of Darkness
24%inclusion33 decks136 decks
21%synergy
Bad Moon
22%inclusion30 decks136 decks
19%synergy
Phyresis
19%inclusion26 decks136 decks
17%synergy
Black Market
15%inclusion21 decks136 decks
-5%synergy
Grave Pact
15%inclusion20 decks136 decks
-5%synergy
Black Market Connections
14%inclusion19 decks136 decks
-10%synergy
Oversold Cemetery
11%inclusion15 decks136 decks
6%synergy
Haunted One
10%inclusion14 decks136 decks
8%synergy
Dark Prophecy
10%inclusion13 decks136 decks
6%synergy
The Meathook Massacre
7.4%inclusion10 decks136 decks
-10%synergy
Tribute to Horobi
7.4%inclusion10 decks136 decks
6%synergy
Dictate of Erebos
7.4%inclusion10 decks136 decks
-4%synergy
Vampiric Rites
6.6%inclusion9 decks136 decks
1%synergy
Glistening Oil
5.9%inclusion8 decks136 decks
5%synergy
Lord Skitter's Blessing
5.9%inclusion8 decks136 decks
5%synergy
Planeswalkers
Vraska, Betrayal's Sting
26%inclusion35 decks136 decks
23%synergy
Liliana of the Dark Realms
15%inclusion21 decks136 decks
2%synergy
Utility Lands
Cabal Coffers
43%inclusion58 decks136 decks
-12%synergy
Karn's Bastion
33%inclusion45 decks136 decks
29%synergy
Rogue's Passage
32%inclusion43 decks136 decks
12%synergy
Bojuka Bog
30%inclusion41 decks136 decks
-17%synergy
Reliquary Tower
26%inclusion35 decks136 decks
-4%synergy
Mudflat Village
25%inclusion34 decks136 decks
22%synergy
Urborg, Tomb of Yawgmoth
25%inclusion34 decks136 decks
-13%synergy
Cabal Stronghold
24%inclusion33 decks136 decks
-10%synergy
Three Tree City
24%inclusion32 decks136 decks
19%synergy
Nykthos, Shrine to Nyx
21%inclusion29 decks136 decks
-8%synergy
Mortuary Mire
21%inclusion28 decks136 decks
8%synergy
Witch's Cottage
20%inclusion27 decks136 decks
-5%synergy
Secret Tunnel
14%inclusion3 decks21 decks
13%synergy
Phyrexian Tower
13%inclusion18 decks136 decks
-13%synergy
Castle Locthwain
11%inclusion15 decks136 decks
-6%synergy
War Room
10%inclusion13 decks136 decks
-6%synergy
Crypt of Agadeem
8.8%inclusion12 decks136 decks
-3%synergy
Shizo, Death's Storehouse
8.1%inclusion11 decks136 decks
-2%synergy
Access Tunnel
8.1%inclusion11 decks136 decks
5%synergy
Barren Moor
7.4%inclusion10 decks136 decks
-2%synergy
Temple of the False God
5.9%inclusion8 decks136 decks
-2%synergy
Minas Morgul, Dark Fortress
5.1%inclusion7 decks136 decks
2%synergy
Leechridden Swamp
5.1%inclusion7 decks136 decks
2%synergy
Mana Artifacts
Sol Ring
71%inclusion97 decks136 decks
-14%synergy
Arcane Signet
40%inclusion55 decks136 decks
-21%synergy
Patchwork Banner
27%inclusion37 decks135 decks
23%synergy
Glistening Sphere
22%inclusion30 decks136 decks
21%synergy
Thought Vessel
19%inclusion26 decks136 decks
-6%synergy
Charcoal Diamond
16%inclusion22 decks136 decks
-6%synergy
Heraldic Banner
16%inclusion22 decks136 decks
11%synergy
Caged Sun
15%inclusion20 decks136 decks
4%synergy
Mind Stone
13%inclusion18 decks136 decks
-15%synergy
Phyrexian Atlas
11%inclusion15 decks136 decks
11%synergy
Gauntlet of Power
8.8%inclusion12 decks136 decks
6%synergy
Staff of Compleation
8.8%inclusion12 decks136 decks
7%synergy
Commander's Sphere
6.6%inclusion9 decks136 decks
-1%synergy
Extraplanar Lens
6.6%inclusion9 decks136 decks
2%synergy
Throne of Eldraine
5.9%inclusion8 decks136 decks
-4%synergy
Fellwar Stone
5.1%inclusion7 decks136 decks
-9%synergy
Lands
Swamp
99%inclusion135 decks136 decks
4%synergy
Path of Ancestry
26%inclusion36 decks136 decks
21%synergy
Big Apple, 3 a.m.
14%inclusion2 decks14 decks
12%synergy
Myriad Landscape
12%inclusion16 decks136 decks
-13%synergy
Cavern of Souls
12%inclusion16 decks136 decks
5%synergy
Command Tower
11%inclusion15 decks136 decks
5%synergy
Evolving Wilds
5.9%inclusion8 decks136 decks
2%synergy
About UsContactPrivacy PolicyTerms of Service
Space Cow MediaArchidektCardsphereCommander SpellbookFABRECSpellvoid
Space Cow MediaArchidektCommander's Herald
Commander SpellbookFABRECSpellvoid
EDHREC is unofficial Fan Content permitted under the Fan Content Policy. Not approved/endorsed by Wizards. Portions of the materials used are property of Wizards of the Coast. ©Wizards of the Coast LLC.
next@15 test