Karumonix, the Rat King (Commander) - Expensive Relentless Rats

Karumonix, the Rat King
Rank #395
15decks
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
100%inclusion15 decks15 decks
98%synergy
Marrow-Gnawer
93%inclusion14 decks15 decks
90%synergy
Thrumming Stone
80%inclusion12 decks15 decks
76%synergy
Patriarch's Bidding
73%inclusion11 decks15 decks
69%synergy
Kindred Dominance
67%inclusion10 decks15 decks
62%synergy
Ashcoat of the Shadow Swarm
60%inclusion9 decks15 decks
57%synergy
Three Tree City
60%inclusion6 decks10 decks
55%synergy
Herald's Horn
60%inclusion9 decks15 decks
54%synergy
Pack Rat
60%inclusion9 decks15 decks
54%synergy
Piper of the Swarm
60%inclusion9 decks15 decks
53%synergy
Top Cards
Jet Medallion
100%inclusion15 decks15 decks
38%synergy
Dark Ritual
93%inclusion14 decks15 decks
27%synergy
Phyrexian Arena
67%inclusion10 decks15 decks
27%synergy
Bontu's Monument
60%inclusion9 decks15 decks
32%synergy
Crypt Ghast
60%inclusion9 decks15 decks
13%synergy
Ogre Slumlord
53%inclusion8 decks15 decks
43%synergy
Grim Tutor
53%inclusion8 decks15 decks
42%synergy
Lord Skitter, Sewer King
47%inclusion7 decks15 decks
38%synergy
Deadly Rollick
40%inclusion6 decks15 decks
15%synergy
Ink-Eyes, Servant of Oni
40%inclusion6 decks15 decks
37%synergy
Game Changers
Vampiric Tutor
93%inclusion14 decks15 decks
72%synergy
Demonic Tutor
87%inclusion13 decks15 decks
59%synergy
Imperial Seal
40%inclusion6 decks15 decks
33%synergy
Ancient Tomb
33%inclusion5 decks15 decks
22%synergy
Bolas's Citadel
27%inclusion4 decks15 decks
-2%synergy
Mana Vault
20%inclusion3 decks15 decks
13%synergy
The One Ring
13%inclusion2 decks15 decks
4%synergy
Necropotence
13%inclusion2 decks15 decks
-1%synergy
Chrome Mox
13%inclusion2 decks15 decks
7%synergy
Mox Diamond
13%inclusion2 decks15 decks
10%synergy
Creatures
Ratcatcher
40%inclusion6 decks15 decks
37%synergy
Ichor Rats
33%inclusion5 decks15 decks
30%synergy
Lord Skitter's Butcher
27%inclusion4 decks15 decks
23%synergy
Blightbelly Rat
27%inclusion4 decks15 decks
23%synergy
Septic Rats
27%inclusion4 decks15 decks
25%synergy
Refurbished Familiar
20%inclusion3 decks15 decks
18%synergy
Crypt Rats
20%inclusion3 decks15 decks
15%synergy
Roaming Throne
20%inclusion3 decks15 decks
17%synergy
Filth
20%inclusion3 decks15 decks
18%synergy
Swarm of Rats
20%inclusion3 decks15 decks
18%synergy
Voracious Vermin
20%inclusion3 decks15 decks
17%synergy
Gnat Miser
20%inclusion3 decks15 decks
17%synergy
Typhoid Rats
20%inclusion3 decks15 decks
16%synergy
Burglar Rat
13%inclusion2 decks15 decks
3%synergy
Ayara, First of Locthwain
13%inclusion2 decks15 decks
-12%synergy
Tangled Colony
13%inclusion2 decks15 decks
10%synergy
Species Specialist
13%inclusion2 decks15 decks
10%synergy
Adaptive Automaton
13%inclusion2 decks15 decks
12%synergy
Nirkana Revenant
13%inclusion2 decks15 decks
3%synergy
Locust Miser
13%inclusion2 decks15 decks
12%synergy
Yawgmoth, Thran Physician
13%inclusion2 decks15 decks
3%synergy
Rancid Rats
13%inclusion2 decks15 decks
11%synergy
Persistent Marshstalker
10%inclusion1 decks10 decks
7%synergy
Valley Rotcaller
10%inclusion1 decks10 decks
7%synergy
Patron of the Nezumi
6.7%inclusion1 decks15 decks
6%synergy
Mirkwood Bats
6.7%inclusion1 decks15 decks
-2%synergy
Chittering Rats
6.7%inclusion1 decks15 decks
6%synergy
Illuminor Szeras
6.7%inclusion1 decks15 decks
3%synergy
Nezumi Graverobber
6.7%inclusion1 decks15 decks
5%synergy
Magus of the Coffers
6.7%inclusion1 decks15 decks
0%synergy
Hell's Caretaker
6.7%inclusion1 decks15 decks
6%synergy
Ravenous Rats
6.7%inclusion1 decks15 decks
5%synergy
Necrotic Ooze
6.7%inclusion1 decks15 decks
2%synergy
Blood Artist
6.7%inclusion1 decks15 decks
-25%synergy
Crashing Drawbridge
6.7%inclusion1 decks15 decks
4%synergy
Sheoldred, the Apocalypse
6.7%inclusion1 decks15 decks
-8%synergy
Gray Merchant of Asphodel
6.7%inclusion1 decks15 decks
-44%synergy
Throat Slitter
6.7%inclusion1 decks15 decks
5%synergy
Mikaeus, the Unhallowed
6.7%inclusion1 decks15 decks
-1%synergy
Canoptek Wraith
6.7%inclusion1 decks15 decks
4%synergy
Grim Haruspex
6.7%inclusion1 decks15 decks
-2%synergy
Zulaport Cutthroat
6.7%inclusion1 decks15 decks
-17%synergy
Kozilek, Butcher of Truth
6.7%inclusion1 decks15 decks
6%synergy
Chittering Skitterling
6.7%inclusion1 decks15 decks
6%synergy
Burnished Hart
6.7%inclusion1 decks15 decks
0%synergy
Chittering Witch
6.7%inclusion1 decks15 decks
2%synergy
Changeling Outcast
6.7%inclusion1 decks15 decks
2%synergy
Nezumi Informant
6.7%inclusion1 decks15 decks
0%synergy
Pitiless Plunderer
6.7%inclusion1 decks15 decks
-13%synergy
Drainpipe Vermin
6.7%inclusion1 decks15 decks
5%synergy
Instants
Archenemy's Charm
50%inclusion1 decks2 decks
41%synergy
Village Rites
33%inclusion5 decks15 decks
8%synergy
Vraska's Fall
27%inclusion4 decks15 decks
23%synergy
Defile
20%inclusion3 decks15 decks
-16%synergy
Tainted Strike
20%inclusion3 decks15 decks
17%synergy
Foul-Tongue Shriek
20%inclusion3 decks15 decks
18%synergy
Whisper of the Dross
13%inclusion2 decks15 decks
11%synergy
Entomb
13%inclusion2 decks15 decks
1%synergy
Go for the Throat
13%inclusion2 decks15 decks
-9%synergy
Snuff Out
13%inclusion2 decks15 decks
0%synergy
Heartless Act
13%inclusion2 decks15 decks
11%synergy
Rat Out
13%inclusion2 decks15 decks
12%synergy
Deadly Dispute
13%inclusion2 decks15 decks
-13%synergy
Flare of Malice
13%inclusion2 decks15 decks
0%synergy
Cabal Ritual
13%inclusion2 decks15 decks
-5%synergy
Culling the Weak
13%inclusion2 decks15 decks
-3%synergy
Withering Boon
13%inclusion2 decks15 decks
9%synergy
Bitter Triumph
13%inclusion2 decks15 decks
4%synergy
Breathe Your Last
13%inclusion2 decks15 decks
11%synergy
Sudden Spoiling
13%inclusion2 decks15 decks
5%synergy
Withering Torment
13%inclusion1 decks8 decks
-19%synergy
Hagra Mauling
6.7%inclusion1 decks15 decks
2%synergy
Hero's Downfall
6.7%inclusion1 decks15 decks
0%synergy
Fell the Profane
6.7%inclusion1 decks15 decks
-12%synergy
Force of Despair
6.7%inclusion1 decks15 decks
-1%synergy
Cut Down
6.7%inclusion1 decks15 decks
3%synergy
Sheoldred's Edict
6.7%inclusion1 decks15 decks
-8%synergy
Scour from Existence
6.7%inclusion1 decks15 decks
6%synergy
Imp's Mischief
6.7%inclusion1 decks15 decks
-18%synergy
Consuming Corruption
6.7%inclusion1 decks15 decks
-9%synergy
Anoint with Affliction
6.7%inclusion1 decks15 decks
6%synergy
Grim Affliction
6.7%inclusion1 decks15 decks
5%synergy
Grasp of Darkness
6.7%inclusion1 decks15 decks
5%synergy
Doom Blade
6.7%inclusion1 decks15 decks
0%synergy
Soul Shatter
6.7%inclusion1 decks15 decks
-5%synergy
Dash Hopes
6.7%inclusion1 decks15 decks
6%synergy
Infernal Grasp
6.7%inclusion1 decks15 decks
-18%synergy
Spoils of Evil
6.7%inclusion1 decks15 decks
6%synergy
Plumb the Forbidden
6.7%inclusion1 decks15 decks
2%synergy
Warping Wail
6.7%inclusion1 decks15 decks
6%synergy
Dismember
6.7%inclusion1 decks15 decks
-4%synergy
Sorceries
Feed the Swarm
33%inclusion5 decks15 decks
-17%synergy
Echoing Return
33%inclusion5 decks15 decks
30%synergy
Damnation
27%inclusion4 decks15 decks
6%synergy
Diabolic Intent
20%inclusion3 decks15 decks
5%synergy
Torment of Hailfire
20%inclusion3 decks15 decks
5%synergy
Infectious Inquiry
20%inclusion3 decks15 decks
17%synergy
Sign in Blood
20%inclusion3 decks15 decks
-15%synergy
Crippling Fear
20%inclusion3 decks15 decks
17%synergy
Bubbling Muck
13%inclusion2 decks15 decks
-2%synergy
Phyresis Outbreak
13%inclusion2 decks15 decks
12%synergy
Read the Bones
13%inclusion2 decks15 decks
-3%synergy
Living Death
13%inclusion2 decks15 decks
3%synergy
Reanimate
13%inclusion2 decks15 decks
-27%synergy
Insatiable Avarice
13%inclusion2 decks15 decks
2%synergy
Gruesome Fate
13%inclusion2 decks15 decks
11%synergy
Cruel Tutor
13%inclusion2 decks15 decks
12%synergy
Swarmyard Massacre
11%inclusion1 decks9 decks
9%synergy
Diabolic Tutor
6.7%inclusion1 decks15 decks
-7%synergy
Plague Wind
6.7%inclusion1 decks15 decks
6%synergy
Profane Tutor
6.7%inclusion1 decks15 decks
2%synergy
Final Act
6.7%inclusion1 decks15 decks
5%synergy
Haunting Voyage
6.7%inclusion1 decks15 decks
6%synergy
Dread Return
6.7%inclusion1 decks15 decks
-5%synergy
Agadeem's Awakening
6.7%inclusion1 decks15 decks
-1%synergy
Infernal Tutor
6.7%inclusion1 decks15 decks
6%synergy
Exsanguinate
6.7%inclusion1 decks15 decks
-18%synergy
Final Parting
6.7%inclusion1 decks15 decks
2%synergy
In Garruk's Wake
6.7%inclusion1 decks15 decks
3%synergy
Toxic Deluge
6.7%inclusion1 decks15 decks
-30%synergy
Beseech the Queen
6.7%inclusion1 decks15 decks
1%synergy
Drown in Ichor
6.7%inclusion1 decks15 decks
3%synergy
Rise of the Dark Realms
6.7%inclusion1 decks15 decks
-6%synergy
Chain of Smog
6.7%inclusion1 decks15 decks
2%synergy
Thoughtseize
6.7%inclusion1 decks15 decks
2%synergy
Plague of Vermin
6.7%inclusion1 decks15 decks
4%synergy
Pact of the Serpent
6.7%inclusion1 decks15 decks
5%synergy
Secret Salvage
6.7%inclusion1 decks15 decks
5%synergy
Utility Artifacts
Chronicle of Victory
50%inclusion1 decks2 decks
47%synergy
Skullclamp
40%inclusion6 decks15 decks
18%synergy
Vanquisher's Banner
40%inclusion6 decks15 decks
36%synergy
Coat of Arms
33%inclusion5 decks15 decks
31%synergy
Lightning Greaves
27%inclusion4 decks15 decks
-7%synergy
Phyrexian Altar
20%inclusion3 decks15 decks
6%synergy
Door of Destinies
20%inclusion3 decks15 decks
18%synergy
Banner of Kinship
14%inclusion1 decks7 decks
12%synergy
Chimil, the Inner Sun
13%inclusion2 decks15 decks
13%synergy
Ashnod's Altar
13%inclusion2 decks15 decks
-7%synergy
Whip of Erebos
13%inclusion2 decks15 decks
2%synergy
Urza's Incubator
13%inclusion2 decks15 decks
11%synergy
Sensei's Divining Top
6.7%inclusion1 decks15 decks
-1%synergy
Elixir of Immortality
6.7%inclusion1 decks15 decks
5%synergy
Stone Calendar
6.7%inclusion1 decks15 decks
7%synergy
Wayfarer's Bauble
6.7%inclusion1 decks15 decks
-8%synergy
Manifold Key
6.7%inclusion1 decks15 decks
5%synergy
Umbral Mantle
6.7%inclusion1 decks15 decks
6%synergy
Contagion Engine
6.7%inclusion1 decks15 decks
5%synergy
The Immortal Sun
6.7%inclusion1 decks15 decks
6%synergy
Cloudstone Curio
6.7%inclusion1 decks15 decks
7%synergy
Nim Deathmantle
6.7%inclusion1 decks15 decks
4%synergy
Font of Mythos
6.7%inclusion1 decks15 decks
4%synergy
Sword of Truth and Justice
6.7%inclusion1 decks15 decks
6%synergy
Expedition Map
6.7%inclusion1 decks15 decks
-5%synergy
Sword of Hearth and Home
6.7%inclusion1 decks15 decks
5%synergy
Akroma's Memorial
6.7%inclusion1 decks15 decks
6%synergy
Navigation Orb
6.7%inclusion1 decks15 decks
6%synergy
Altar of the Brood
6.7%inclusion1 decks15 decks
5%synergy
Swiftfoot Boots
6.7%inclusion1 decks15 decks
-25%synergy
Sword of the Paruns
6.7%inclusion1 decks15 decks
6%synergy
Howling Mine
6.7%inclusion1 decks15 decks
3%synergy
Sword of the Animist
6.7%inclusion1 decks15 decks
3%synergy
Thornbite Staff
6.7%inclusion1 decks15 decks
4%synergy
Helm of Awakening
6.7%inclusion1 decks15 decks
5%synergy
Enchantments
Grave Pact
40%inclusion6 decks15 decks
20%synergy
Black Market Connections
40%inclusion6 decks15 decks
16%synergy
Cover of Darkness
40%inclusion6 decks15 decks
37%synergy
Bad Moon
33%inclusion5 decks15 decks
30%synergy
Black Market
27%inclusion4 decks15 decks
6%synergy
The Meathook Massacre
13%inclusion2 decks15 decks
-4%synergy
Haunted One
13%inclusion2 decks15 decks
11%synergy
Necromancy
13%inclusion2 decks15 decks
8%synergy
Dictate of Erebos
13%inclusion2 decks15 decks
2%synergy
Phyresis
13%inclusion2 decks15 decks
11%synergy
Animate Dead
13%inclusion2 decks15 decks
-4%synergy
Oversold Cemetery
13%inclusion2 decks15 decks
8%synergy
Necrogen Communion
13%inclusion2 decks15 decks
12%synergy
Nowhere to Run
8.3%inclusion1 decks12 decks
5%synergy
Greed
6.7%inclusion1 decks15 decks
0%synergy
Contamination
6.7%inclusion1 decks15 decks
3%synergy
Glistening Oil
6.7%inclusion1 decks15 decks
6%synergy
Phyrexian Reclamation
6.7%inclusion1 decks15 decks
-3%synergy
Relic Putrescence
6.7%inclusion1 decks15 decks
6%synergy
Carnival of Souls
6.7%inclusion1 decks15 decks
6%synergy
Necrodominance
6.7%inclusion1 decks15 decks
4%synergy
Dauthi Embrace
6.7%inclusion1 decks15 decks
5%synergy
Chthonian Nightmare
6.7%inclusion1 decks15 decks
3%synergy
Bastion of Remembrance
6.7%inclusion1 decks15 decks
-11%synergy
Lord Skitter's Blessing
6.7%inclusion1 decks15 decks
6%synergy
Heartless Summoning
6.7%inclusion1 decks15 decks
2%synergy
Planeswalkers
Liliana of the Dark Realms
20%inclusion3 decks15 decks
6%synergy
Vraska, Betrayal's Sting
13%inclusion2 decks15 decks
11%synergy
Professor Onyx
6.7%inclusion1 decks15 decks
1%synergy
Utility Lands
Cabal Coffers
93%inclusion14 decks15 decks
39%synergy
Urborg, Tomb of Yawgmoth
73%inclusion11 decks15 decks
36%synergy
Nykthos, Shrine to Nyx
60%inclusion9 decks15 decks
30%synergy
Cabal Stronghold
53%inclusion8 decks15 decks
19%synergy
Swarmyard
53%inclusion8 decks15 decks
48%synergy
Bojuka Bog
47%inclusion7 decks15 decks
0%synergy
Phyrexian Tower
40%inclusion6 decks15 decks
14%synergy
Crypt of Agadeem
33%inclusion5 decks15 decks
22%synergy
Karn's Bastion
27%inclusion4 decks15 decks
23%synergy
Reliquary Tower
27%inclusion4 decks15 decks
-3%synergy
Shizo, Death's Storehouse
20%inclusion3 decks15 decks
10%synergy
Rogue's Passage
20%inclusion3 decks15 decks
1%synergy
Mudflat Village
17%inclusion2 decks12 decks
14%synergy
Mortuary Mire
13%inclusion2 decks15 decks
0%synergy
Vesuva
13%inclusion2 decks15 decks
11%synergy
War Room
13%inclusion2 decks15 decks
-3%synergy
Takenuma, Abandoned Mire
13%inclusion2 decks15 decks
-2%synergy
Lake of the Dead
13%inclusion2 decks15 decks
8%synergy
Castle Locthwain
13%inclusion2 decks15 decks
-4%synergy
Vault of Whispers
6.7%inclusion1 decks15 decks
1%synergy
Desert of the Glorified
6.7%inclusion1 decks15 decks
4%synergy
Barren Moor
6.7%inclusion1 decks15 decks
-3%synergy
Maze of Ith
6.7%inclusion1 decks15 decks
4%synergy
Ebon Stronghold
6.7%inclusion1 decks15 decks
5%synergy
Crystal Vein
6.7%inclusion1 decks15 decks
4%synergy
Spymaster's Vault
6.7%inclusion1 decks15 decks
-3%synergy
Witch's Cottage
6.7%inclusion1 decks15 decks
-18%synergy
Volrath's Stronghold
6.7%inclusion1 decks15 decks
3%synergy
Minas Morgul, Dark Fortress
6.7%inclusion1 decks15 decks
4%synergy
Deserted Temple
6.7%inclusion1 decks15 decks
2%synergy
Peat Bog
6.7%inclusion1 decks15 decks
5%synergy
Thespian's Stage
6.7%inclusion1 decks15 decks
1%synergy
Dark Depths
6.7%inclusion1 decks15 decks
6%synergy
Access Tunnel
6.7%inclusion1 decks15 decks
4%synergy
Everglades
6.7%inclusion1 decks15 decks
5%synergy
Mana Artifacts
Sol Ring
100%inclusion15 decks15 decks
14%synergy
Arcane Signet
53%inclusion8 decks15 decks
-8%synergy
The Soul Stone
50%inclusion1 decks2 decks
35%synergy
Patchwork Banner
40%inclusion4 decks10 decks
36%synergy
Thought Vessel
27%inclusion4 decks15 decks
1%synergy
Charcoal Diamond
20%inclusion3 decks15 decks
-2%synergy
Jeweled Lotus
20%inclusion3 decks15 decks
19%synergy
Lotus Petal
20%inclusion3 decks15 decks
13%synergy
Caged Sun
13%inclusion2 decks15 decks
2%synergy
Glistening Sphere
13%inclusion2 decks15 decks
12%synergy
Mana Crypt
13%inclusion2 decks15 decks
12%synergy
Throne of Eldraine
13%inclusion2 decks15 decks
4%synergy
Mox Amber
13%inclusion2 decks15 decks
9%synergy
Decanter of Endless Water
13%inclusion2 decks15 decks
10%synergy
Commander's Sphere
6.7%inclusion1 decks15 decks
-2%synergy
Heraldic Banner
6.7%inclusion1 decks15 decks
1%synergy
Fellwar Stone
6.7%inclusion1 decks15 decks
-7%synergy
Skull of Ramos
6.7%inclusion1 decks15 decks
6%synergy
Mind Stone
6.7%inclusion1 decks15 decks
-22%synergy
Sceptre of Eternal Glory
6.7%inclusion1 decks15 decks
-1%synergy
Mox Opal
6.7%inclusion1 decks15 decks
3%synergy
Lands
Swamp
100%inclusion15 decks15 decks
5%synergy
Cavern of Souls
33%inclusion5 decks15 decks
27%synergy
Path of Ancestry
27%inclusion4 decks15 decks
22%synergy
Command Tower
13%inclusion2 decks15 decks
8%synergy
Myriad Landscape
13%inclusion2 decks15 decks
-12%synergy
Hagra Mauling
6.7%inclusion1 decks15 decks
2%synergy
Fell the Profane
6.7%inclusion1 decks15 decks
-12%synergy
Fabled Passage
6.7%inclusion1 decks15 decks
5%synergy
Terramorphic Expanse
6.7%inclusion1 decks15 decks
4%synergy
Urza's Cave
6.7%inclusion1 decks15 decks
-2%synergy
Agadeem's Awakening
6.7%inclusion1 decks15 decks
-1%synergy
Evolving Wilds
6.7%inclusion1 decks15 decks
3%synergy
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