Karumonix, the Rat King (Commander) - Optimized Rats

Karumonix, the Rat King
Rank #381
7decks
As CommanderAs CardAverage DeckDecks
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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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Enchantments
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Utility Lands
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Ichor Rats
100%inclusion7 decks7 decks
97%synergy
Marrow-Gnawer
100%inclusion7 decks7 decks
97%synergy
Pack Rat
100%inclusion7 decks7 decks
94%synergy
Ogre Slumlord
100%inclusion7 decks7 decks
90%synergy
Rancid Rats
86%inclusion6 decks7 decks
83%synergy
Infectious Inquiry
86%inclusion6 decks7 decks
83%synergy
Blightbelly Rat
86%inclusion6 decks7 decks
82%synergy
Swarmyard
86%inclusion6 decks7 decks
80%synergy
Piper of the Swarm
86%inclusion6 decks7 decks
79%synergy
Cover of Darkness
71%inclusion5 decks7 decks
68%synergy
Top Cards
Vraska's Fall
71%inclusion5 decks7 decks
68%synergy
Typhoid Rats
71%inclusion5 decks7 decks
68%synergy
Drown in Ichor
71%inclusion5 decks7 decks
68%synergy
Stronghold Rats
71%inclusion5 decks7 decks
68%synergy
Phyrexian Arena
71%inclusion5 decks7 decks
32%synergy
Lord Skitter, Sewer King
71%inclusion5 decks7 decks
63%synergy
Vraska, Betrayal's Sting
57%inclusion4 decks7 decks
55%synergy
Lord Skitter's Butcher
57%inclusion4 decks7 decks
54%synergy
Phyresis Outbreak
57%inclusion4 decks7 decks
55%synergy
Dark Ritual
57%inclusion4 decks7 decks
-10%synergy
Game Changers
Demonic Tutor
29%inclusion2 decks7 decks
1%synergy
Necropotence
29%inclusion2 decks7 decks
14%synergy
Vampiric Tutor
29%inclusion2 decks7 decks
8%synergy
Imperial Seal
14%inclusion1 decks7 decks
7%synergy
Ancient Tomb
14%inclusion1 decks7 decks
3%synergy
Bolas's Citadel
14%inclusion1 decks7 decks
-14%synergy
Mana Vault
14%inclusion1 decks7 decks
8%synergy
Creatures
Chittering Skitterling
57%inclusion4 decks7 decks
56%synergy
Ashcoat of the Shadow Swarm
57%inclusion4 decks7 decks
54%synergy
Gnat Miser
57%inclusion4 decks7 decks
54%synergy
Crypt Rats
43%inclusion3 decks7 decks
38%synergy
Burglar Rat
43%inclusion3 decks7 decks
32%synergy
Ayara, First of Locthwain
43%inclusion3 decks7 decks
17%synergy
Tangled Colony
43%inclusion3 decks7 decks
40%synergy
Ink-Eyes, Servant of Oni
43%inclusion3 decks7 decks
40%synergy
Swarm of Rats
43%inclusion3 decks7 decks
40%synergy
Valley Rotcaller
43%inclusion3 decks7 decks
40%synergy
Drainpipe Vermin
43%inclusion3 decks7 decks
41%synergy
Septic Rats
43%inclusion3 decks7 decks
41%synergy
Rat Colony
43%inclusion3 decks7 decks
37%synergy
Chittering Rats
29%inclusion2 decks7 decks
28%synergy
Gnawing Vermin
29%inclusion2 decks7 decks
27%synergy
Locust Miser
29%inclusion2 decks7 decks
27%synergy
Chittering Witch
29%inclusion2 decks7 decks
24%synergy
Voracious Vermin
29%inclusion2 decks7 decks
26%synergy
Twisted Sewer-Witch
29%inclusion2 decks7 decks
27%synergy
Changeling Outcast
29%inclusion2 decks7 decks
23%synergy
Ratcatcher
29%inclusion2 decks7 decks
25%synergy
Ruin Rat
29%inclusion2 decks7 decks
27%synergy
Refurbished Familiar
14%inclusion1 decks7 decks
12%synergy
Bog Rats
14%inclusion1 decks7 decks
14%synergy
Mirkwood Bats
14%inclusion1 decks7 decks
6%synergy
Core Prowler
14%inclusion1 decks7 decks
14%synergy
Relentless Rats
14%inclusion1 decks7 decks
13%synergy
Nezumi Graverobber
14%inclusion1 decks7 decks
13%synergy
Graveshifter
14%inclusion1 decks7 decks
13%synergy
Vampire Cutthroat
14%inclusion1 decks7 decks
12%synergy
Ravenous Rats
14%inclusion1 decks7 decks
13%synergy
Ruthless Radrat
14%inclusion1 decks7 decks
13%synergy
Roaming Throne
14%inclusion1 decks7 decks
11%synergy
Nezumi Bladeblesser
14%inclusion1 decks7 decks
14%synergy
Filth
14%inclusion1 decks7 decks
12%synergy
Insatiable Frugivore
14%inclusion1 decks7 decks
14%synergy
Bloodline Pretender
14%inclusion1 decks7 decks
14%synergy
Species Specialist
14%inclusion1 decks7 decks
11%synergy
Skullsnatcher
14%inclusion1 decks7 decks
14%synergy
Throat Slitter
14%inclusion1 decks7 decks
12%synergy
Zodiac Rat
14%inclusion1 decks7 decks
14%synergy
Sinuous Vermin
14%inclusion1 decks7 decks
14%synergy
Nirkana Revenant
14%inclusion1 decks7 decks
3%synergy
Razortooth Rats
14%inclusion1 decks7 decks
14%synergy
Vito, Thorn of the Dusk Rose
14%inclusion1 decks7 decks
4%synergy
Persistent Marshstalker
14%inclusion1 decks7 decks
11%synergy
Drana, Liberator of Malakir
14%inclusion1 decks7 decks
11%synergy
Jade-Cast Sentinel
14%inclusion1 decks7 decks
14%synergy
Nezumi Cutthroat
14%inclusion1 decks7 decks
14%synergy
Crypt Ghast
14%inclusion1 decks7 decks
-33%synergy
Instants
Whisper of the Dross
43%inclusion3 decks7 decks
40%synergy
Village Rites
43%inclusion3 decks7 decks
17%synergy
Cabal Ritual
43%inclusion3 decks7 decks
25%synergy
Zuko's Conviction
33%inclusion1 decks3 decks
32%synergy
Hagra Mauling
29%inclusion2 decks7 decks
24%synergy
Rat Out
29%inclusion2 decks7 decks
27%synergy
Not Dead After All
29%inclusion2 decks7 decks
17%synergy
Consuming Corruption
29%inclusion2 decks7 decks
13%synergy
Anoint with Affliction
29%inclusion2 decks7 decks
28%synergy
Grim Affliction
29%inclusion2 decks7 decks
27%synergy
Defile
29%inclusion2 decks7 decks
-8%synergy
Undying Malice
29%inclusion2 decks7 decks
19%synergy
Tainted Strike
29%inclusion2 decks7 decks
26%synergy
Feign Death
29%inclusion2 decks7 decks
20%synergy
Fight On!
20%inclusion1 decks5 decks
18%synergy
Deadly Rollick
14%inclusion1 decks7 decks
-10%synergy
Fell the Profane
14%inclusion1 decks7 decks
-5%synergy
Cut Down
14%inclusion1 decks7 decks
10%synergy
Sheoldred's Edict
14%inclusion1 decks7 decks
0%synergy
Go for the Throat
14%inclusion1 decks7 decks
-9%synergy
Snuff Out
14%inclusion1 decks7 decks
1%synergy
Undying Evil
14%inclusion1 decks7 decks
11%synergy
Deadly Dispute
14%inclusion1 decks7 decks
-12%synergy
Grasp of Darkness
14%inclusion1 decks7 decks
12%synergy
Doom Blade
14%inclusion1 decks7 decks
7%synergy
Hellish Rebuke
14%inclusion1 decks7 decks
13%synergy
Supernatural Stamina
14%inclusion1 decks7 decks
7%synergy
Virulent Wound
14%inclusion1 decks7 decks
14%synergy
Withering Boon
14%inclusion1 decks7 decks
10%synergy
Murder
14%inclusion1 decks7 decks
4%synergy
Infernal Grasp
14%inclusion1 decks7 decks
-11%synergy
Death Denied
14%inclusion1 decks7 decks
14%synergy
Presumed Dead
14%inclusion1 decks7 decks
14%synergy
Malakir Rebirth
14%inclusion1 decks7 decks
-9%synergy
You Are Already Dead
14%inclusion1 decks7 decks
13%synergy
Fake Your Own Death
14%inclusion1 decks7 decks
7%synergy
Baleful Mastery
14%inclusion1 decks7 decks
6%synergy
Corrupted Conviction
14%inclusion1 decks7 decks
2%synergy
Cremate
14%inclusion1 decks7 decks
13%synergy
Tragic Slip
14%inclusion1 decks7 decks
-5%synergy
Withering Torment
14%inclusion1 decks7 decks
-17%synergy
Sorceries
Feed the Swarm
57%inclusion4 decks7 decks
7%synergy
Reanimate
57%inclusion4 decks7 decks
17%synergy
Shredder's Technique
50%inclusion1 decks2 decks
46%synergy
Vat Emergence
29%inclusion2 decks7 decks
27%synergy
Spread the Sickness
29%inclusion2 decks7 decks
28%synergy
Victimize
29%inclusion2 decks7 decks
2%synergy
Revenge of the Rats
29%inclusion2 decks7 decks
25%synergy
Unearth
29%inclusion2 decks7 decks
20%synergy
Night's Whisper
29%inclusion2 decks7 decks
4%synergy
Insatiable Avarice
29%inclusion2 decks7 decks
17%synergy
Toxic Deluge
29%inclusion2 decks7 decks
-8%synergy
Sign in Blood
29%inclusion2 decks7 decks
-7%synergy
Plague of Vermin
29%inclusion2 decks7 decks
26%synergy
Lively Dirge
14%inclusion1 decks7 decks
11%synergy
Patriarch's Bidding
14%inclusion1 decks7 decks
10%synergy
Damnable Pact
14%inclusion1 decks7 decks
10%synergy
Entreat the Dead
14%inclusion1 decks7 decks
14%synergy
Final Act
14%inclusion1 decks7 decks
13%synergy
Agadeem's Awakening
14%inclusion1 decks7 decks
7%synergy
Read the Bones
14%inclusion1 decks7 decks
-2%synergy
Mutilate
14%inclusion1 decks7 decks
-3%synergy
Profane Command
14%inclusion1 decks7 decks
12%synergy
Dark Petition
14%inclusion1 decks7 decks
10%synergy
Exsanguinate
14%inclusion1 decks7 decks
-10%synergy
Living Death
14%inclusion1 decks7 decks
4%synergy
Final Parting
14%inclusion1 decks7 decks
10%synergy
In Garruk's Wake
14%inclusion1 decks7 decks
10%synergy
Stitch Together
14%inclusion1 decks7 decks
11%synergy
Dirge of Dread
14%inclusion1 decks7 decks
14%synergy
Geth's Summons
14%inclusion1 decks7 decks
14%synergy
Raise Dead
14%inclusion1 decks7 decks
13%synergy
Kindred Dominance
14%inclusion1 decks7 decks
10%synergy
Beseech the Queen
14%inclusion1 decks7 decks
8%synergy
Damnation
14%inclusion1 decks7 decks
-6%synergy
Disentomb
14%inclusion1 decks7 decks
13%synergy
Utility Artifacts
Contagion Clasp
43%inclusion3 decks7 decks
41%synergy
Bontu's Monument
43%inclusion3 decks7 decks
14%synergy
Swiftfoot Boots
43%inclusion3 decks7 decks
12%synergy
Lightning Greaves
43%inclusion3 decks7 decks
9%synergy
Contagion Engine
29%inclusion2 decks7 decks
27%synergy
Coat of Arms
29%inclusion2 decks7 decks
26%synergy
Skullclamp
29%inclusion2 decks7 decks
6%synergy
Akroma's Memorial
29%inclusion2 decks7 decks
28%synergy
Jet Medallion
29%inclusion2 decks7 decks
-33%synergy
Thornbite Staff
29%inclusion2 decks7 decks
26%synergy
The Darkness Crystal
20%inclusion1 decks5 decks
0%synergy
Leyline Axe
14%inclusion1 decks7 decks
13%synergy
Whip of Erebos
14%inclusion1 decks7 decks
3%synergy
Mimic Vat
14%inclusion1 decks7 decks
13%synergy
Sword of the Squeak
14%inclusion1 decks7 decks
14%synergy
Hall of Triumph
14%inclusion1 decks7 decks
14%synergy
Wishclaw Talisman
14%inclusion1 decks7 decks
8%synergy
Blade of the Bloodchief
14%inclusion1 decks7 decks
12%synergy
Banner of Kinship
14%inclusion1 decks7 decks
12%synergy
Vanquisher's Banner
14%inclusion1 decks7 decks
10%synergy
Phyrexian Altar
14%inclusion1 decks7 decks
1%synergy
Expedition Map
14%inclusion1 decks7 decks
3%synergy
Well of Knowledge
14%inclusion1 decks7 decks
14%synergy
Well of Lost Dreams
14%inclusion1 decks7 decks
13%synergy
Winter Moon
14%inclusion1 decks7 decks
13%synergy
Conjurer's Closet
14%inclusion1 decks7 decks
12%synergy
Strionic Resonator
14%inclusion1 decks7 decks
13%synergy
Decimator Web
14%inclusion1 decks7 decks
14%synergy
Grafted Exoskeleton
14%inclusion1 decks7 decks
13%synergy
Enchantments
Grave Pact
57%inclusion4 decks7 decks
38%synergy
Vampiric Rites
43%inclusion3 decks7 decks
37%synergy
Black Market
29%inclusion2 decks7 decks
8%synergy
Phyrexian Reclamation
29%inclusion2 decks7 decks
19%synergy
Dictate of Erebos
29%inclusion2 decks7 decks
18%synergy
Intimidation
29%inclusion2 decks7 decks
28%synergy
Animate Dead
29%inclusion2 decks7 decks
11%synergy
Contamination
14%inclusion1 decks7 decks
11%synergy
Necrosynthesis
14%inclusion1 decks7 decks
13%synergy
Haunted One
14%inclusion1 decks7 decks
12%synergy
Necromancy
14%inclusion1 decks7 decks
9%synergy
Sanguine Bond
14%inclusion1 decks7 decks
2%synergy
Phyresis
14%inclusion1 decks7 decks
12%synergy
Call of the Ring
14%inclusion1 decks7 decks
12%synergy
No Mercy
14%inclusion1 decks7 decks
7%synergy
Unholy Annex // Ritual Chamber
14%inclusion1 decks7 decks
11%synergy
Chthonian Nightmare
14%inclusion1 decks7 decks
11%synergy
Black Market Connections
14%inclusion1 decks7 decks
-10%synergy
Oversold Cemetery
14%inclusion1 decks7 decks
9%synergy
Dark Prophecy
14%inclusion1 decks7 decks
10%synergy
Leyline of the Void
14%inclusion1 decks7 decks
13%synergy
Virtue of Persistence
14%inclusion1 decks7 decks
9%synergy
Necrogen Communion
14%inclusion1 decks7 decks
13%synergy
Planeswalkers
Liliana of the Dark Realms
29%inclusion2 decks7 decks
15%synergy
Utility Lands
Bojuka Bog
71%inclusion5 decks7 decks
25%synergy
Cabal Coffers
71%inclusion5 decks7 decks
17%synergy
Karn's Bastion
71%inclusion5 decks7 decks
68%synergy
Cabal Stronghold
43%inclusion3 decks7 decks
8%synergy
Urborg, Tomb of Yawgmoth
43%inclusion3 decks7 decks
5%synergy
War Room
29%inclusion2 decks7 decks
13%synergy
Nykthos, Shrine to Nyx
29%inclusion2 decks7 decks
-1%synergy
Castle Locthwain
29%inclusion2 decks7 decks
12%synergy
Reliquary Tower
29%inclusion2 decks7 decks
-2%synergy
Rogue's Passage
29%inclusion2 decks7 decks
10%synergy
Shizo, Death's Storehouse
14%inclusion1 decks7 decks
4%synergy
Westvale Abbey
14%inclusion1 decks7 decks
8%synergy
Phyrexian Tower
14%inclusion1 decks7 decks
-11%synergy
Mortuary Mire
14%inclusion1 decks7 decks
1%synergy
Memorial to Folly
14%inclusion1 decks7 decks
11%synergy
Barren Moor
14%inclusion1 decks7 decks
5%synergy
Urza's Tower
14%inclusion1 decks7 decks
14%synergy
Urza's Mine
14%inclusion1 decks7 decks
14%synergy
The Black Gate
14%inclusion1 decks7 decks
11%synergy
Witch's Cottage
14%inclusion1 decks7 decks
-10%synergy
Volrath's Stronghold
14%inclusion1 decks7 decks
11%synergy
Takenuma, Abandoned Mire
14%inclusion1 decks7 decks
-1%synergy
Mudflat Village
14%inclusion1 decks7 decks
12%synergy
Urza's Power Plant
14%inclusion1 decks7 decks
14%synergy
Access Tunnel
14%inclusion1 decks7 decks
11%synergy
Mana Artifacts
Glistening Sphere
71%inclusion5 decks7 decks
70%synergy
Sol Ring
71%inclusion5 decks7 decks
-14%synergy
Staff of Compleation
57%inclusion4 decks7 decks
55%synergy
Everflowing Chalice
29%inclusion2 decks7 decks
23%synergy
Arcane Signet
29%inclusion2 decks7 decks
-33%synergy
Mind Stone
29%inclusion2 decks7 decks
0%synergy
Commander's Sphere
14%inclusion1 decks7 decks
6%synergy
Astral Cornucopia
14%inclusion1 decks7 decks
14%synergy
Replicating Ring
14%inclusion1 decks7 decks
14%synergy
Patchwork Banner
14%inclusion1 decks7 decks
10%synergy
Throne of Eldraine
14%inclusion1 decks7 decks
5%synergy
Fellwar Stone
14%inclusion1 decks7 decks
0%synergy
Thought Vessel
14%inclusion1 decks7 decks
-11%synergy
Star Compass
14%inclusion1 decks7 decks
13%synergy
Sceptre of Eternal Glory
14%inclusion1 decks7 decks
6%synergy
Lands
Swamp
100%inclusion7 decks7 decks
5%synergy
Path of Ancestry
43%inclusion3 decks7 decks
38%synergy
Hagra Mauling
29%inclusion2 decks7 decks
24%synergy
Cavern of Souls
29%inclusion2 decks7 decks
22%synergy
Fell the Profane
14%inclusion1 decks7 decks
-5%synergy
Myriad Landscape
14%inclusion1 decks7 decks
-11%synergy
Agadeem's Awakening
14%inclusion1 decks7 decks
7%synergy
Malakir Rebirth
14%inclusion1 decks7 decks
-9%synergy
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