Karumonix, the Rat King (Commander) - Core Rats

Karumonix, the Rat King
Rank #398
39decks
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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Piper of the Swarm
92%inclusion36 decks39 decks
85%synergy
Ogre Slumlord
87%inclusion34 decks39 decks
77%synergy
Pack Rat
82%inclusion32 decks39 decks
76%synergy
Ichor Rats
77%inclusion30 decks39 decks
74%synergy
Blightbelly Rat
77%inclusion30 decks39 decks
74%synergy
Drown in Ichor
72%inclusion28 decks39 decks
68%synergy
Infectious Inquiry
69%inclusion27 decks39 decks
67%synergy
Typhoid Rats
69%inclusion27 decks39 decks
66%synergy
Swarmyard
69%inclusion27 decks39 decks
64%synergy
Septic Rats
64%inclusion25 decks39 decks
62%synergy
Top Cards
Lord Skitter, Sewer King
69%inclusion27 decks39 decks
61%synergy
Marrow-Gnawer
64%inclusion25 decks39 decks
61%synergy
Rancid Rats
64%inclusion25 decks39 decks
62%synergy
Crypt Rats
62%inclusion24 decks39 decks
57%synergy
Vraska's Fall
62%inclusion24 decks39 decks
58%synergy
Rat Colony
59%inclusion23 decks39 decks
53%synergy
Lord Skitter's Butcher
56%inclusion22 decks39 decks
53%synergy
Jet Medallion
56%inclusion22 decks39 decks
-6%synergy
Tangled Colony
54%inclusion21 decks39 decks
51%synergy
Dark Ritual
54%inclusion21 decks39 decks
-13%synergy
Creatures
Voracious Vermin
49%inclusion19 decks39 decks
46%synergy
Persistent Marshstalker
44%inclusion17 decks39 decks
41%synergy
Engine Rat
44%inclusion17 decks39 decks
42%synergy
Gnat Miser
44%inclusion17 decks39 decks
41%synergy
Stronghold Rats
44%inclusion17 decks39 decks
40%synergy
Chittering Skitterling
41%inclusion16 decks39 decks
40%synergy
Wave of Rats
41%inclusion16 decks39 decks
39%synergy
Ashcoat of the Shadow Swarm
38%inclusion15 decks39 decks
35%synergy
Ratcatcher
38%inclusion15 decks39 decks
35%synergy
Ruin Rat
38%inclusion15 decks39 decks
37%synergy
Burglar Rat
36%inclusion14 decks39 decks
25%synergy
Nezumi Cutthroat
33%inclusion13 decks39 decks
33%synergy
Changeling Outcast
33%inclusion13 decks39 decks
28%synergy
Old Flitterfang
33%inclusion13 decks39 decks
32%synergy
Rat King, Verminister
32%inclusion9 decks28 decks
29%synergy
Rat King, Pale Piper
29%inclusion7 decks24 decks
25%synergy
Species Specialist
28%inclusion11 decks39 decks
25%synergy
Locust Miser
28%inclusion11 decks39 decks
27%synergy
Swarm of Rats
28%inclusion11 decks39 decks
26%synergy
Twisted Sewer-Witch
28%inclusion11 decks39 decks
27%synergy
Pestilence Rats
28%inclusion11 decks39 decks
26%synergy
Ink-Eyes, Servant of Oni
26%inclusion10 decks39 decks
22%synergy
Ruthless Radrat
23%inclusion9 decks39 decks
22%synergy
Razortooth Rats
23%inclusion9 decks39 decks
23%synergy
Nezumi Prowler
23%inclusion9 decks39 decks
22%synergy
Ravenous Rats
21%inclusion8 decks39 decks
19%synergy
Gnawing Vermin
21%inclusion8 decks39 decks
19%synergy
Chittering Witch
21%inclusion8 decks39 decks
16%synergy
Valley Rotcaller
21%inclusion8 decks39 decks
18%synergy
Nashi, Moon Sage's Scion
21%inclusion8 decks39 decks
17%synergy
Undercity Dire Rat
19%inclusion7 decks36 decks
18%synergy
Ayara, First of Locthwain
18%inclusion7 decks39 decks
-7%synergy
Mukotai Ambusher
18%inclusion7 decks39 decks
17%synergy
Skullsnatcher
18%inclusion7 decks39 decks
17%synergy
Throat Slitter
18%inclusion7 decks39 decks
16%synergy
Crypt Ghast
18%inclusion7 decks39 decks
-29%synergy
Elephant-Rat
17%inclusion6 decks36 decks
16%synergy
Relentless Rats
15%inclusion6 decks39 decks
14%synergy
Nezumi Informant
15%inclusion6 decks39 decks
9%synergy
Arnyn, Deathbloom Botanist
13%inclusion2 decks15 decks
11%synergy
Refurbished Familiar
13%inclusion5 decks39 decks
11%synergy
Rotting Rats
13%inclusion5 decks39 decks
10%synergy
Gray Merchant of Asphodel
13%inclusion5 decks39 decks
-38%synergy
Nezumi Bladeblesser
13%inclusion5 decks39 decks
12%synergy
Nezumi Graverobber
10%inclusion4 decks39 decks
9%synergy
Adaptive Automaton
10%inclusion4 decks39 decks
9%synergy
Drainpipe Vermin
10%inclusion4 decks39 decks
9%synergy
Chittering Rats
7.7%inclusion3 decks39 decks
7%synergy
Rabid Rats
7.7%inclusion3 decks39 decks
8%synergy
Nezumi Ronin
7.7%inclusion3 decks39 decks
8%synergy
Instants
Whisper of the Dross
51%inclusion20 decks39 decks
49%synergy
Defile
44%inclusion17 decks39 decks
8%synergy
Village Rites
36%inclusion14 decks39 decks
10%synergy
Grim Affliction
36%inclusion14 decks39 decks
34%synergy
Anoint with Affliction
31%inclusion12 decks39 decks
30%synergy
Go for the Throat
23%inclusion9 decks39 decks
0%synergy
Rat Out
21%inclusion8 decks39 decks
19%synergy
Tainted Strike
21%inclusion8 decks39 decks
18%synergy
Deadly Dispute
18%inclusion7 decks39 decks
-9%synergy
Not Dead After All
15%inclusion6 decks39 decks
4%synergy
Corrupted Conviction
15%inclusion6 decks39 decks
3%synergy
Tragic Slip
13%inclusion5 decks39 decks
-6%synergy
Unbury
10%inclusion3 decks29 decks
10%synergy
Virulent Wound
10%inclusion4 decks39 decks
10%synergy
Undying Malice
10%inclusion4 decks39 decks
0%synergy
Murder
10%inclusion4 decks39 decks
0%synergy
Infernal Grasp
10%inclusion4 decks39 decks
-15%synergy
Malakir Rebirth
10%inclusion4 decks39 decks
-13%synergy
Offer Immortality
10%inclusion4 decks39 decks
8%synergy
Withering Torment
10%inclusion4 decks39 decks
-21%synergy
Fell the Profane
7.7%inclusion3 decks39 decks
-12%synergy
Sheoldred's Edict
7.7%inclusion3 decks39 decks
-7%synergy
Consuming Corruption
7.7%inclusion3 decks39 decks
-8%synergy
Supernatural Stamina
7.7%inclusion3 decks39 decks
0%synergy
Raise the Draugr
7.7%inclusion3 decks39 decks
7%synergy
Costly Plunder
7.7%inclusion3 decks39 decks
5%synergy
Foul-Tongue Shriek
7.7%inclusion3 decks39 decks
6%synergy
Baleful Mastery
7.7%inclusion3 decks39 decks
-0%synergy
Black Sun's Twilight
7.7%inclusion3 decks39 decks
5%synergy
Gravepurge
7.7%inclusion3 decks39 decks
6%synergy
Sudden Spoiling
7.7%inclusion3 decks39 decks
-1%synergy
Feign Death
7.7%inclusion3 decks39 decks
-1%synergy
Alesha's Legacy
5.4%inclusion2 decks37 decks
4%synergy
Imp's Mischief
5.1%inclusion2 decks39 decks
-20%synergy
Snuff Out
5.1%inclusion2 decks39 decks
-8%synergy
Battle-Rage Blessing
5.1%inclusion2 decks39 decks
4%synergy
Doom Blade
5.1%inclusion2 decks39 decks
-2%synergy
Cabal Ritual
5.1%inclusion2 decks39 decks
-13%synergy
Culling the Weak
5.1%inclusion2 decks39 decks
-12%synergy
Altar's Reap
5.1%inclusion2 decks39 decks
3%synergy
Bitter Triumph
5.1%inclusion2 decks39 decks
-5%synergy
Death Denied
5.1%inclusion2 decks39 decks
4%synergy
Fake Your Own Death
5.1%inclusion2 decks39 decks
-2%synergy
Sorceries
Phyresis Outbreak
51%inclusion20 decks39 decks
50%synergy
Feed the Swarm
49%inclusion19 decks39 decks
-2%synergy
Vat Emergence
38%inclusion15 decks39 decks
37%synergy
Crippling Fear
36%inclusion14 decks39 decks
33%synergy
Revenge of the Rats
33%inclusion13 decks39 decks
30%synergy
Sign in Blood
28%inclusion11 decks39 decks
-7%synergy
Patriarch's Bidding
26%inclusion10 decks39 decks
22%synergy
Swarmyard Massacre
26%inclusion10 decks39 decks
23%synergy
Night's Whisper
26%inclusion10 decks39 decks
1%synergy
Kindred Dominance
23%inclusion9 decks39 decks
18%synergy
Spread the Sickness
21%inclusion8 decks39 decks
20%synergy
Feed the Infection
21%inclusion8 decks39 decks
20%synergy
Read the Bones
21%inclusion8 decks39 decks
4%synergy
Diabolic Tutor
18%inclusion7 decks39 decks
4%synergy
Unearth
15%inclusion6 decks39 decks
7%synergy
Echoing Return
15%inclusion6 decks39 decks
12%synergy
Exsanguinate
13%inclusion5 decks39 decks
-12%synergy
Caress of Phyrexia
13%inclusion5 decks39 decks
12%synergy
Victimize
10%inclusion4 decks39 decks
-17%synergy
Living Death
10%inclusion4 decks39 decks
-0%synergy
Toxic Deluge
10%inclusion4 decks39 decks
-27%synergy
Geth's Summons
10%inclusion4 decks39 decks
10%synergy
Bubbling Muck
7.7%inclusion3 decks39 decks
-8%synergy
Mutilate
7.7%inclusion3 decks39 decks
-8%synergy
In Garruk's Wake
7.7%inclusion3 decks39 decks
4%synergy
Corrupt
7.7%inclusion3 decks39 decks
5%synergy
Plague of Vermin
7.7%inclusion3 decks39 decks
5%synergy
Bloodline Bidding
6.9%inclusion2 decks29 decks
3%synergy
Diabolic Intent
5.1%inclusion2 decks39 decks
-10%synergy
Torment of Hailfire
5.1%inclusion2 decks39 decks
-10%synergy
Return from Extinction
5.1%inclusion2 decks39 decks
5%synergy
Decree of Pain
5.1%inclusion2 decks39 decks
0%synergy
Reanimate
5.1%inclusion2 decks39 decks
-35%synergy
Dirge of Dread
5.1%inclusion2 decks39 decks
5%synergy
Gruesome Realization
5.1%inclusion2 decks39 decks
3%synergy
Lab Rats
5.1%inclusion2 decks39 decks
5%synergy
Disentomb
5.1%inclusion2 decks39 decks
4%synergy
Secret Salvage
5.1%inclusion2 decks39 decks
4%synergy
Utility Artifacts
Bontu's Monument
54%inclusion21 decks39 decks
26%synergy
Herald's Horn
49%inclusion19 decks39 decks
43%synergy
Contagion Clasp
33%inclusion13 decks39 decks
31%synergy
Skullclamp
31%inclusion12 decks39 decks
8%synergy
Vanquisher's Banner
31%inclusion12 decks39 decks
27%synergy
Swiftfoot Boots
31%inclusion12 decks39 decks
-1%synergy
Whip of Erebos
21%inclusion8 decks39 decks
10%synergy
Prosthetic Injector
21%inclusion8 decks39 decks
20%synergy
Thrumming Stone
21%inclusion8 decks39 decks
16%synergy
Contagion Engine
18%inclusion7 decks39 decks
16%synergy
Door of Destinies
18%inclusion7 decks39 decks
16%synergy
Lightning Greaves
15%inclusion6 decks39 decks
-19%synergy
Chronicle of Victory
14%inclusion4 decks29 decks
11%synergy
Grafted Exoskeleton
13%inclusion5 decks39 decks
12%synergy
Ashnod's Altar
10%inclusion4 decks39 decks
-10%synergy
Vat of Rebirth
7.7%inclusion3 decks39 decks
4%synergy
Trailblazer's Boots
7.7%inclusion3 decks39 decks
5%synergy
Hall of Triumph
7.7%inclusion3 decks39 decks
7%synergy
Akroma's Memorial
7.7%inclusion3 decks39 decks
7%synergy
Whispersilk Cloak
7.7%inclusion3 decks39 decks
2%synergy
The Darkness Crystal
5.6%inclusion2 decks36 decks
-15%synergy
Wayfarer's Bauble
5.1%inclusion2 decks39 decks
-10%synergy
Cloudstone Curio
5.1%inclusion2 decks39 decks
5%synergy
Coat of Arms
5.1%inclusion2 decks39 decks
3%synergy
Stoneforge Masterwork
5.1%inclusion2 decks39 decks
5%synergy
Banner of Kinship
5.1%inclusion2 decks39 decks
3%synergy
Blade of Selves
5.1%inclusion2 decks39 decks
4%synergy
Mask of Avacyn
5.1%inclusion2 decks39 decks
4%synergy
Urza's Incubator
5.1%inclusion2 decks39 decks
3%synergy
Nihil Spellbomb
5.1%inclusion2 decks39 decks
4%synergy
Staff of the Death Magus
5.1%inclusion2 decks39 decks
2%synergy
Basilisk Collar
5.1%inclusion2 decks39 decks
2%synergy
Enchantments
Necrogen Communion
49%inclusion19 decks39 decks
47%synergy
Cover of Darkness
36%inclusion14 decks39 decks
33%synergy
Phyrexian Arena
33%inclusion13 decks39 decks
-6%synergy
Phyresis
31%inclusion12 decks39 decks
29%synergy
Oversold Cemetery
21%inclusion8 decks39 decks
15%synergy
Vampiric Rites
18%inclusion7 decks39 decks
12%synergy
Grave Pact
18%inclusion7 decks39 decks
-2%synergy
Black Market Connections
15%inclusion6 decks39 decks
-9%synergy
Phyrexian Reclamation
13%inclusion5 decks39 decks
3%synergy
Haunted One
13%inclusion5 decks39 decks
10%synergy
Black Market
10%inclusion4 decks39 decks
-10%synergy
Glistening Oil
10%inclusion4 decks39 decks
10%synergy
Underworld Connections
7.7%inclusion3 decks39 decks
6%synergy
Dictate of Erebos
7.7%inclusion3 decks39 decks
-3%synergy
Intimidation
7.7%inclusion3 decks39 decks
7%synergy
Snake Cult Initiation
7.7%inclusion3 decks39 decks
8%synergy
Demonic Embrace
7.7%inclusion3 decks39 decks
7%synergy
Lord Skitter's Blessing
7.7%inclusion3 decks39 decks
7%synergy
Bad Moon
7.7%inclusion3 decks39 decks
5%synergy
Demonic Vigor
5.1%inclusion2 decks39 decks
5%synergy
The Meathook Massacre
5.1%inclusion2 decks39 decks
-12%synergy
Fear
5.1%inclusion2 decks39 decks
5%synergy
Relic Putrescence
5.1%inclusion2 decks39 decks
5%synergy
Tribute to Horobi
5.1%inclusion2 decks39 decks
4%synergy
Carnival of Souls
5.1%inclusion2 decks39 decks
4%synergy
Underworld Dreams
5.1%inclusion2 decks39 decks
-1%synergy
Eternal Thirst
5.1%inclusion2 decks39 decks
3%synergy
Kaya's Ghostform
5.1%inclusion2 decks39 decks
-5%synergy
Dark Prophecy
5.1%inclusion2 decks39 decks
1%synergy
Planeswalkers
Vraska, Betrayal's Sting
33%inclusion13 decks39 decks
31%synergy
Liliana of the Dark Realms
21%inclusion8 decks39 decks
7%synergy
Utility Lands
Karn's Bastion
51%inclusion20 decks39 decks
48%synergy
Rogue's Passage
51%inclusion20 decks39 decks
32%synergy
Mudflat Village
49%inclusion19 decks39 decks
46%synergy
Bojuka Bog
46%inclusion18 decks39 decks
-1%synergy
Cabal Stronghold
38%inclusion15 decks39 decks
4%synergy
Cabal Coffers
31%inclusion12 decks39 decks
-24%synergy
Mortuary Mire
28%inclusion11 decks39 decks
15%synergy
Reliquary Tower
28%inclusion11 decks39 decks
-2%synergy
Three Tree City
28%inclusion11 decks39 decks
24%synergy
Access Tunnel
28%inclusion11 decks39 decks
25%synergy
Witch's Cottage
26%inclusion10 decks39 decks
1%synergy
Urborg, Tomb of Yawgmoth
26%inclusion10 decks39 decks
-12%synergy
Secret Tunnel
21%inclusion7 decks33 decks
20%synergy
Nykthos, Shrine to Nyx
15%inclusion6 decks39 decks
-14%synergy
Shizo, Death's Storehouse
13%inclusion5 decks39 decks
3%synergy
Phyrexian Tower
13%inclusion5 decks39 decks
-13%synergy
Barren Moor
13%inclusion5 decks39 decks
3%synergy
Crypt of Agadeem
13%inclusion5 decks39 decks
1%synergy
Inkmoth Nexus
13%inclusion5 decks39 decks
12%synergy
The Dross Pits
13%inclusion5 decks39 decks
11%synergy
War Room
10%inclusion4 decks39 decks
-6%synergy
Minas Morgul, Dark Fortress
10%inclusion4 decks39 decks
7%synergy
Castle Locthwain
10%inclusion4 decks39 decks
-6%synergy
Desert of the Glorified
7.7%inclusion3 decks39 decks
5%synergy
Susur Secundi, Void Altar
5.6%inclusion2 decks36 decks
-2%synergy
Vault of Whispers
5.1%inclusion2 decks39 decks
-0%synergy
Mage-Ring Network
5.1%inclusion2 decks39 decks
5%synergy
Memorial to Folly
5.1%inclusion2 decks39 decks
2%synergy
Piranha Marsh
5.1%inclusion2 decks39 decks
5%synergy
Polluted Mire
5.1%inclusion2 decks39 decks
2%synergy
Deserted Temple
5.1%inclusion2 decks39 decks
1%synergy
Blighted Fen
5.1%inclusion2 decks39 decks
4%synergy
Temple of the False God
5.1%inclusion2 decks39 decks
-3%synergy
Mana Artifacts
Sol Ring
62%inclusion24 decks39 decks
-24%synergy
Arcane Signet
38%inclusion15 decks39 decks
-23%synergy
Glistening Sphere
38%inclusion15 decks39 decks
37%synergy
Staff of Compleation
21%inclusion8 decks39 decks
19%synergy
Patchwork Banner
18%inclusion7 decks39 decks
14%synergy
Charcoal Diamond
15%inclusion6 decks39 decks
-7%synergy
Heraldic Banner
15%inclusion6 decks39 decks
10%synergy
Phyrexian Atlas
13%inclusion5 decks39 decks
12%synergy
Mind Stone
10%inclusion4 decks39 decks
-18%synergy
Caged Sun
7.7%inclusion3 decks39 decks
-3%synergy
Gauntlet of Power
7.7%inclusion3 decks39 decks
5%synergy
Thought Vessel
7.7%inclusion3 decks39 decks
-17%synergy
The Soul Stone
5.6%inclusion2 decks36 decks
-10%synergy
Throne of Eldraine
5.1%inclusion2 decks39 decks
-4%synergy
Lands
Swamp
100%inclusion39 decks39 decks
5%synergy
Path of Ancestry
38%inclusion15 decks39 decks
33%synergy
Myriad Landscape
23%inclusion9 decks39 decks
-2%synergy
Cavern of Souls
15%inclusion6 decks39 decks
9%synergy
Escape Tunnel
13%inclusion5 decks39 decks
12%synergy
Malakir Rebirth
10%inclusion4 decks39 decks
-13%synergy
Big Apple, 3 a.m.
8.3%inclusion2 decks24 decks
7%synergy
Fell the Profane
7.7%inclusion3 decks39 decks
-12%synergy
Command Tower
5.1%inclusion2 decks39 decks
-1%synergy
Terramorphic Expanse
5.1%inclusion2 decks39 decks
2%synergy
Urza's Cave
5.1%inclusion2 decks39 decks
-3%synergy
Evolving Wilds
5.1%inclusion2 decks39 decks
1%synergy
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