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

Karumonix, the Rat King
Rank #383
17decks
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%inclusion17 decks17 decks
98%synergy
Marrow-Gnawer
94%inclusion16 decks17 decks
91%synergy
Thrumming Stone
82%inclusion14 decks17 decks
78%synergy
Patriarch's Bidding
59%inclusion10 decks17 decks
55%synergy
Kindred Dominance
59%inclusion10 decks17 decks
54%synergy
Herald's Horn
59%inclusion10 decks17 decks
53%synergy
Piper of the Swarm
59%inclusion10 decks17 decks
52%synergy
Ashcoat of the Shadow Swarm
53%inclusion9 decks17 decks
49%synergy
Swarmyard
53%inclusion9 decks17 decks
47%synergy
Pack Rat
53%inclusion9 decks17 decks
47%synergy
Top Cards
Dark Ritual
94%inclusion16 decks17 decks
27%synergy
Jet Medallion
94%inclusion16 decks17 decks
32%synergy
Bontu's Monument
65%inclusion11 decks17 decks
36%synergy
Phyrexian Arena
65%inclusion11 decks17 decks
25%synergy
Ogre Slumlord
53%inclusion9 decks17 decks
43%synergy
Crypt Ghast
53%inclusion9 decks17 decks
5%synergy
Grim Tutor
53%inclusion9 decks17 decks
41%synergy
Black Market Connections
47%inclusion8 decks17 decks
23%synergy
Deadly Rollick
41%inclusion7 decks17 decks
17%synergy
Feed the Swarm
41%inclusion7 decks17 decks
-9%synergy
Game Changers
Demonic Tutor
88%inclusion15 decks17 decks
61%synergy
Vampiric Tutor
88%inclusion15 decks17 decks
67%synergy
Imperial Seal
41%inclusion7 decks17 decks
34%synergy
Ancient Tomb
35%inclusion6 decks17 decks
24%synergy
Bolas's Citadel
29%inclusion5 decks17 decks
1%synergy
Mana Vault
24%inclusion4 decks17 decks
17%synergy
The One Ring
12%inclusion2 decks17 decks
2%synergy
Necropotence
12%inclusion2 decks17 decks
-3%synergy
Chrome Mox
12%inclusion2 decks17 decks
6%synergy
Mox Diamond
12%inclusion2 decks17 decks
8%synergy
Creatures
Ratcatcher
41%inclusion7 decks17 decks
38%synergy
Lord Skitter, Sewer King
41%inclusion7 decks17 decks
33%synergy
Ink-Eyes, Servant of Oni
35%inclusion6 decks17 decks
32%synergy
Lord Skitter's Butcher
24%inclusion4 decks17 decks
20%synergy
Swarm of Rats
24%inclusion4 decks17 decks
21%synergy
Ichor Rats
24%inclusion4 decks17 decks
21%synergy
Refurbished Familiar
18%inclusion3 decks17 decks
15%synergy
Crypt Rats
18%inclusion3 decks17 decks
13%synergy
Roaming Throne
18%inclusion3 decks17 decks
15%synergy
Ayara, First of Locthwain
18%inclusion3 decks17 decks
-8%synergy
Filth
18%inclusion3 decks17 decks
15%synergy
Blightbelly Rat
18%inclusion3 decks17 decks
14%synergy
Septic Rats
18%inclusion3 decks17 decks
16%synergy
Typhoid Rats
18%inclusion3 decks17 decks
14%synergy
Burglar Rat
12%inclusion2 decks17 decks
1%synergy
Blood Artist
12%inclusion2 decks17 decks
-20%synergy
Tangled Colony
12%inclusion2 decks17 decks
9%synergy
Species Specialist
12%inclusion2 decks17 decks
8%synergy
Adaptive Automaton
12%inclusion2 decks17 decks
11%synergy
Nirkana Revenant
12%inclusion2 decks17 decks
1%synergy
Locust Miser
12%inclusion2 decks17 decks
10%synergy
Voracious Vermin
12%inclusion2 decks17 decks
9%synergy
Pitiless Plunderer
12%inclusion2 decks17 decks
-8%synergy
Gnat Miser
12%inclusion2 decks17 decks
9%synergy
Rancid Rats
12%inclusion2 decks17 decks
9%synergy
Ancient Cellarspawn
11%inclusion1 decks9 decks
9%synergy
Valley Rotcaller
8.3%inclusion1 decks12 decks
6%synergy
Patron of the Nezumi
5.9%inclusion1 decks17 decks
5%synergy
Mirkwood Bats
5.9%inclusion1 decks17 decks
-3%synergy
Chittering Rats
5.9%inclusion1 decks17 decks
5%synergy
Illuminor Szeras
5.9%inclusion1 decks17 decks
2%synergy
Nezumi Graverobber
5.9%inclusion1 decks17 decks
4%synergy
Opposition Agent
5.9%inclusion1 decks17 decks
-4%synergy
Magus of the Coffers
5.9%inclusion1 decks17 decks
-1%synergy
Hell's Caretaker
5.9%inclusion1 decks17 decks
5%synergy
Ravenous Rats
5.9%inclusion1 decks17 decks
4%synergy
Necrotic Ooze
5.9%inclusion1 decks17 decks
2%synergy
Crashing Drawbridge
5.9%inclusion1 decks17 decks
4%synergy
Hooded Blightfang
5.9%inclusion1 decks17 decks
5%synergy
Sheoldred, the Apocalypse
5.9%inclusion1 decks17 decks
-9%synergy
Gray Merchant of Asphodel
5.9%inclusion1 decks17 decks
-45%synergy
Throat Slitter
5.9%inclusion1 decks17 decks
4%synergy
Mikaeus, the Unhallowed
5.9%inclusion1 decks17 decks
-2%synergy
Canoptek Wraith
5.9%inclusion1 decks17 decks
3%synergy
Grim Haruspex
5.9%inclusion1 decks17 decks
-3%synergy
Zulaport Cutthroat
5.9%inclusion1 decks17 decks
-17%synergy
Kozilek, Butcher of Truth
5.9%inclusion1 decks17 decks
5%synergy
Burnished Hart
5.9%inclusion1 decks17 decks
-1%synergy
Yawgmoth, Thran Physician
5.9%inclusion1 decks17 decks
-4%synergy
Changeling Outcast
5.9%inclusion1 decks17 decks
1%synergy
Instants
Archenemy's Charm
100%inclusion1 decks1 decks
91%synergy
Village Rites
35%inclusion6 decks17 decks
10%synergy
Go for the Throat
24%inclusion4 decks17 decks
1%synergy
Snuff Out
18%inclusion3 decks17 decks
5%synergy
Vraska's Fall
18%inclusion3 decks17 decks
14%synergy
Heartless Act
18%inclusion3 decks17 decks
16%synergy
Deadly Dispute
18%inclusion3 decks17 decks
-8%synergy
Defile
18%inclusion3 decks17 decks
-19%synergy
Tainted Strike
18%inclusion3 decks17 decks
15%synergy
Foul-Tongue Shriek
18%inclusion3 decks17 decks
16%synergy
Entomb
12%inclusion2 decks17 decks
0%synergy
Flare of Malice
12%inclusion2 decks17 decks
-1%synergy
Cabal Ritual
12%inclusion2 decks17 decks
-6%synergy
Culling the Weak
12%inclusion2 decks17 decks
-4%synergy
Withering Boon
12%inclusion2 decks17 decks
7%synergy
Bitter Triumph
12%inclusion2 decks17 decks
2%synergy
Breathe Your Last
12%inclusion2 decks17 decks
10%synergy
Sudden Spoiling
12%inclusion2 decks17 decks
3%synergy
Withering Torment
11%inclusion1 decks9 decks
-20%synergy
Hagra Mauling
5.9%inclusion1 decks17 decks
1%synergy
Hero's Downfall
5.9%inclusion1 decks17 decks
-1%synergy
Fell the Profane
5.9%inclusion1 decks17 decks
-13%synergy
Force of Despair
5.9%inclusion1 decks17 decks
-2%synergy
Cut Down
5.9%inclusion1 decks17 decks
2%synergy
Sheoldred's Edict
5.9%inclusion1 decks17 decks
-9%synergy
Whisper of the Dross
5.9%inclusion1 decks17 decks
3%synergy
Scour from Existence
5.9%inclusion1 decks17 decks
6%synergy
Imp's Mischief
5.9%inclusion1 decks17 decks
-19%synergy
Rat Out
5.9%inclusion1 decks17 decks
4%synergy
Consuming Corruption
5.9%inclusion1 decks17 decks
-10%synergy
Anoint with Affliction
5.9%inclusion1 decks17 decks
5%synergy
Grim Affliction
5.9%inclusion1 decks17 decks
4%synergy
Grasp of Darkness
5.9%inclusion1 decks17 decks
4%synergy
Doom Blade
5.9%inclusion1 decks17 decks
-1%synergy
Soul Shatter
5.9%inclusion1 decks17 decks
-6%synergy
Altar's Reap
5.9%inclusion1 decks17 decks
3%synergy
Dash Hopes
5.9%inclusion1 decks17 decks
5%synergy
Infernal Grasp
5.9%inclusion1 decks17 decks
-19%synergy
Spoils of Evil
5.9%inclusion1 decks17 decks
6%synergy
Plumb the Forbidden
5.9%inclusion1 decks17 decks
2%synergy
Corrupted Conviction
5.9%inclusion1 decks17 decks
-7%synergy
Terror
5.9%inclusion1 decks17 decks
5%synergy
Warping Wail
5.9%inclusion1 decks17 decks
6%synergy
Gravepurge
5.9%inclusion1 decks17 decks
4%synergy
Cast Down
5.9%inclusion1 decks17 decks
4%synergy
Victim of Night
5.9%inclusion1 decks17 decks
4%synergy
Dismember
5.9%inclusion1 decks17 decks
-4%synergy
Sorceries
Damnation
35%inclusion6 decks17 decks
15%synergy
Diabolic Intent
29%inclusion5 decks17 decks
14%synergy
Echoing Return
29%inclusion5 decks17 decks
26%synergy
Sign in Blood
29%inclusion5 decks17 decks
-6%synergy
Crippling Fear
24%inclusion4 decks17 decks
20%synergy
Torment of Hailfire
18%inclusion3 decks17 decks
2%synergy
Read the Bones
18%inclusion3 decks17 decks
1%synergy
Living Death
18%inclusion3 decks17 decks
7%synergy
Diabolic Tutor
12%inclusion2 decks17 decks
-3%synergy
Bubbling Muck
12%inclusion2 decks17 decks
-4%synergy
Phyresis Outbreak
12%inclusion2 decks17 decks
10%synergy
Infectious Inquiry
12%inclusion2 decks17 decks
9%synergy
Exsanguinate
12%inclusion2 decks17 decks
-13%synergy
Reanimate
12%inclusion2 decks17 decks
-28%synergy
Insatiable Avarice
12%inclusion2 decks17 decks
0%synergy
Toxic Deluge
12%inclusion2 decks17 decks
-25%synergy
Cruel Tutor
12%inclusion2 decks17 decks
11%synergy
Drown in Ichor
12%inclusion2 decks17 decks
8%synergy
Spread the Sickness
5.9%inclusion1 decks17 decks
5%synergy
Plague Wind
5.9%inclusion1 decks17 decks
5%synergy
Profane Tutor
5.9%inclusion1 decks17 decks
2%synergy
Final Act
5.9%inclusion1 decks17 decks
4%synergy
Haunting Voyage
5.9%inclusion1 decks17 decks
5%synergy
Dread Return
5.9%inclusion1 decks17 decks
-6%synergy
Demonic Collusion
5.9%inclusion1 decks17 decks
6%synergy
Agadeem's Awakening
5.9%inclusion1 decks17 decks
-1%synergy
Infernal Tutor
5.9%inclusion1 decks17 decks
6%synergy
Mutilate
5.9%inclusion1 decks17 decks
-11%synergy
Night's Whisper
5.9%inclusion1 decks17 decks
-19%synergy
Final Parting
5.9%inclusion1 decks17 decks
1%synergy
In Garruk's Wake
5.9%inclusion1 decks17 decks
2%synergy
Gruesome Fate
5.9%inclusion1 decks17 decks
4%synergy
Beseech the Queen
5.9%inclusion1 decks17 decks
0%synergy
Rise of the Dark Realms
5.9%inclusion1 decks17 decks
-7%synergy
Chain of Smog
5.9%inclusion1 decks17 decks
2%synergy
Thoughtseize
5.9%inclusion1 decks17 decks
1%synergy
Pact of the Serpent
5.9%inclusion1 decks17 decks
4%synergy
Secret Salvage
5.9%inclusion1 decks17 decks
5%synergy
Utility Artifacts
Chronicle of Victory
100%inclusion1 decks1 decks
97%synergy
Vanquisher's Banner
41%inclusion7 decks17 decks
37%synergy
Coat of Arms
35%inclusion6 decks17 decks
33%synergy
Skullclamp
29%inclusion5 decks17 decks
7%synergy
Whip of Erebos
24%inclusion4 decks17 decks
13%synergy
Lightning Greaves
24%inclusion4 decks17 decks
-10%synergy
Phyrexian Altar
18%inclusion3 decks17 decks
4%synergy
Door of Destinies
18%inclusion3 decks17 decks
15%synergy
Banner of Kinship
14%inclusion1 decks7 decks
12%synergy
Chimil, the Inner Sun
12%inclusion2 decks17 decks
11%synergy
Contagion Engine
12%inclusion2 decks17 decks
10%synergy
Ashnod's Altar
12%inclusion2 decks17 decks
-8%synergy
Akroma's Memorial
12%inclusion2 decks17 decks
11%synergy
Urza's Incubator
12%inclusion2 decks17 decks
10%synergy
Sword of the Squeak
9.1%inclusion1 decks11 decks
9%synergy
Sensei's Divining Top
5.9%inclusion1 decks17 decks
-2%synergy
Elixir of Immortality
5.9%inclusion1 decks17 decks
4%synergy
Stone Calendar
5.9%inclusion1 decks17 decks
6%synergy
Wayfarer's Bauble
5.9%inclusion1 decks17 decks
-9%synergy
Manifold Key
5.9%inclusion1 decks17 decks
4%synergy
Umbral Mantle
5.9%inclusion1 decks17 decks
5%synergy
The Immortal Sun
5.9%inclusion1 decks17 decks
5%synergy
Cloudstone Curio
5.9%inclusion1 decks17 decks
6%synergy
Aetherflux Reservoir
5.9%inclusion1 decks17 decks
-4%synergy
Nim Deathmantle
5.9%inclusion1 decks17 decks
3%synergy
Font of Mythos
5.9%inclusion1 decks17 decks
4%synergy
Sword of Truth and Justice
5.9%inclusion1 decks17 decks
5%synergy
Expedition Map
5.9%inclusion1 decks17 decks
-6%synergy
Sword of Hearth and Home
5.9%inclusion1 decks17 decks
5%synergy
Maskwood Nexus
5.9%inclusion1 decks17 decks
5%synergy
Navigation Orb
5.9%inclusion1 decks17 decks
5%synergy
Altar of the Brood
5.9%inclusion1 decks17 decks
4%synergy
Swiftfoot Boots
5.9%inclusion1 decks17 decks
-25%synergy
Sword of the Paruns
5.9%inclusion1 decks17 decks
6%synergy
Howling Mine
5.9%inclusion1 decks17 decks
2%synergy
Sword of the Animist
5.9%inclusion1 decks17 decks
2%synergy
Thornbite Staff
5.9%inclusion1 decks17 decks
3%synergy
Helm of Awakening
5.9%inclusion1 decks17 decks
5%synergy
Enchantments
Grave Pact
29%inclusion5 decks17 decks
10%synergy
Cover of Darkness
29%inclusion5 decks17 decks
26%synergy
Bad Moon
29%inclusion5 decks17 decks
26%synergy
Black Market
24%inclusion4 decks17 decks
3%synergy
The Meathook Massacre
18%inclusion3 decks17 decks
0%synergy
Dictate of Erebos
18%inclusion3 decks17 decks
7%synergy
Haunted One
12%inclusion2 decks17 decks
9%synergy
Necromancy
12%inclusion2 decks17 decks
6%synergy
Phyresis
12%inclusion2 decks17 decks
10%synergy
Carnival of Souls
12%inclusion2 decks17 decks
11%synergy
Animate Dead
12%inclusion2 decks17 decks
-5%synergy
Oversold Cemetery
12%inclusion2 decks17 decks
6%synergy
Dark Prophecy
12%inclusion2 decks17 decks
8%synergy
Nowhere to Run
7.1%inclusion1 decks14 decks
4%synergy
Greed
5.9%inclusion1 decks17 decks
-1%synergy
Contamination
5.9%inclusion1 decks17 decks
2%synergy
Glistening Oil
5.9%inclusion1 decks17 decks
5%synergy
Phyrexian Reclamation
5.9%inclusion1 decks17 decks
-4%synergy
Relic Putrescence
5.9%inclusion1 decks17 decks
6%synergy
Necrodominance
5.9%inclusion1 decks17 decks
3%synergy
Dauthi Embrace
5.9%inclusion1 decks17 decks
4%synergy
Chthonian Nightmare
5.9%inclusion1 decks17 decks
2%synergy
Bastion of Remembrance
5.9%inclusion1 decks17 decks
-11%synergy
Lord Skitter's Blessing
5.9%inclusion1 decks17 decks
5%synergy
Heartless Summoning
5.9%inclusion1 decks17 decks
1%synergy
Necrogen Communion
5.9%inclusion1 decks17 decks
4%synergy
Planeswalkers
Vraska, Betrayal's Sting
24%inclusion4 decks17 decks
21%synergy
Liliana of the Dark Realms
24%inclusion4 decks17 decks
10%synergy
Liliana, Dreadhorde General
5.9%inclusion1 decks17 decks
-8%synergy
Professor Onyx
5.9%inclusion1 decks17 decks
0%synergy
Liliana Vess
5.9%inclusion1 decks17 decks
3%synergy
Utility Lands
Cabal Coffers
94%inclusion16 decks17 decks
39%synergy
Urborg, Tomb of Yawgmoth
65%inclusion11 decks17 decks
27%synergy
Nykthos, Shrine to Nyx
59%inclusion10 decks17 decks
29%synergy
Three Tree City
50%inclusion6 decks12 decks
45%synergy
Cabal Stronghold
47%inclusion8 decks17 decks
13%synergy
Phyrexian Tower
41%inclusion7 decks17 decks
16%synergy
Bojuka Bog
35%inclusion6 decks17 decks
-12%synergy
Crypt of Agadeem
29%inclusion5 decks17 decks
18%synergy
Karn's Bastion
29%inclusion5 decks17 decks
26%synergy
Reliquary Tower
29%inclusion5 decks17 decks
-1%synergy
Rogue's Passage
29%inclusion5 decks17 decks
10%synergy
Mudflat Village
29%inclusion4 decks14 decks
26%synergy
Shizo, Death's Storehouse
18%inclusion3 decks17 decks
8%synergy
Mortuary Mire
18%inclusion3 decks17 decks
5%synergy
War Room
18%inclusion3 decks17 decks
2%synergy
Takenuma, Abandoned Mire
18%inclusion3 decks17 decks
2%synergy
Barren Moor
12%inclusion2 decks17 decks
2%synergy
Vesuva
12%inclusion2 decks17 decks
9%synergy
Witch's Cottage
12%inclusion2 decks17 decks
-13%synergy
Lake of the Dead
12%inclusion2 decks17 decks
7%synergy
Castle Locthwain
12%inclusion2 decks17 decks
-5%synergy
Access Tunnel
12%inclusion2 decks17 decks
9%synergy
Vault of Whispers
5.9%inclusion1 decks17 decks
1%synergy
Desert of the Glorified
5.9%inclusion1 decks17 decks
3%synergy
Maze of Ith
5.9%inclusion1 decks17 decks
3%synergy
The Black Gate
5.9%inclusion1 decks17 decks
2%synergy
Ebon Stronghold
5.9%inclusion1 decks17 decks
5%synergy
Crystal Vein
5.9%inclusion1 decks17 decks
3%synergy
Spymaster's Vault
5.9%inclusion1 decks17 decks
-4%synergy
Volrath's Stronghold
5.9%inclusion1 decks17 decks
2%synergy
Minas Morgul, Dark Fortress
5.9%inclusion1 decks17 decks
3%synergy
Deserted Temple
5.9%inclusion1 decks17 decks
2%synergy
Peat Bog
5.9%inclusion1 decks17 decks
4%synergy
Thespian's Stage
5.9%inclusion1 decks17 decks
1%synergy
Dark Depths
5.9%inclusion1 decks17 decks
5%synergy
Temple of the False God
5.9%inclusion1 decks17 decks
-2%synergy
Everglades
5.9%inclusion1 decks17 decks
4%synergy
Mana Artifacts
Sol Ring
100%inclusion17 decks17 decks
14%synergy
Arcane Signet
59%inclusion10 decks17 decks
-3%synergy
Patchwork Banner
42%inclusion5 decks12 decks
37%synergy
Thought Vessel
24%inclusion4 decks17 decks
-2%synergy
Glistening Sphere
18%inclusion3 decks17 decks
16%synergy
Jeweled Lotus
18%inclusion3 decks17 decks
17%synergy
Lotus Petal
18%inclusion3 decks17 decks
10%synergy
Charcoal Diamond
12%inclusion2 decks17 decks
-11%synergy
Mana Crypt
12%inclusion2 decks17 decks
11%synergy
Throne of Eldraine
12%inclusion2 decks17 decks
2%synergy
Mox Amber
12%inclusion2 decks17 decks
8%synergy
Decanter of Endless Water
12%inclusion2 decks17 decks
9%synergy
Fellwar Stone
12%inclusion2 decks17 decks
-2%synergy
Mind Stone
12%inclusion2 decks17 decks
-17%synergy
Caged Sun
5.9%inclusion1 decks17 decks
-5%synergy
Commander's Sphere
5.9%inclusion1 decks17 decks
-3%synergy
Staff of Compleation
5.9%inclusion1 decks17 decks
4%synergy
Heraldic Banner
5.9%inclusion1 decks17 decks
0%synergy
Skull of Ramos
5.9%inclusion1 decks17 decks
6%synergy
Sceptre of Eternal Glory
5.9%inclusion1 decks17 decks
-2%synergy
Mox Opal
5.9%inclusion1 decks17 decks
3%synergy
Lands
Swamp
100%inclusion17 decks17 decks
5%synergy
Path of Ancestry
35%inclusion6 decks17 decks
30%synergy
Cavern of Souls
29%inclusion5 decks17 decks
23%synergy
Command Tower
12%inclusion2 decks17 decks
6%synergy
Myriad Landscape
12%inclusion2 decks17 decks
-14%synergy
Hagra Mauling
5.9%inclusion1 decks17 decks
1%synergy
Fell the Profane
5.9%inclusion1 decks17 decks
-13%synergy
Fabled Passage
5.9%inclusion1 decks17 decks
4%synergy
Terramorphic Expanse
5.9%inclusion1 decks17 decks
3%synergy
Urza's Cave
5.9%inclusion1 decks17 decks
-2%synergy
Agadeem's Awakening
5.9%inclusion1 decks17 decks
-1%synergy
Evolving Wilds
5.9%inclusion1 decks17 decks
2%synergy
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