Karumonix, the Rat King (Commander) - Optimized Rats

Karumonix, the Rat King
Rank #385
8decks
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Background image for Building Rat Typal With Marrow-Gnawer
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
Mana Artifacts
Lands
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Shredder's Technique
50%inclusion1 decks2 decks
46%synergy
High Synergy Cards
Ichor Rats
100%inclusion8 decks8 decks
97%synergy
Marrow-Gnawer
100%inclusion8 decks8 decks
97%synergy
Pack Rat
100%inclusion8 decks8 decks
94%synergy
Ogre Slumlord
100%inclusion8 decks8 decks
90%synergy
Infectious Inquiry
88%inclusion7 decks8 decks
85%synergy
Blightbelly Rat
88%inclusion7 decks8 decks
84%synergy
Piper of the Swarm
88%inclusion7 decks8 decks
81%synergy
Rancid Rats
75%inclusion6 decks8 decks
72%synergy
Cover of Darkness
75%inclusion6 decks8 decks
72%synergy
Vraska's Fall
75%inclusion6 decks8 decks
72%synergy
Top Cards
Typhoid Rats
75%inclusion6 decks8 decks
71%synergy
Drown in Ichor
75%inclusion6 decks8 decks
71%synergy
Vraska, Betrayal's Sting
63%inclusion5 decks8 decks
60%synergy
Phyresis Outbreak
63%inclusion5 decks8 decks
61%synergy
Dark Ritual
63%inclusion5 decks8 decks
-4%synergy
Grave Pact
63%inclusion5 decks8 decks
43%synergy
Ashcoat of the Shadow Swarm
63%inclusion5 decks8 decks
59%synergy
Stronghold Rats
63%inclusion5 decks8 decks
59%synergy
Phyrexian Arena
63%inclusion5 decks8 decks
23%synergy
Lord Skitter, Sewer King
63%inclusion5 decks8 decks
54%synergy
Game Changers
Demonic Tutor
38%inclusion3 decks8 decks
10%synergy
Vampiric Tutor
38%inclusion3 decks8 decks
17%synergy
Imperial Seal
25%inclusion2 decks8 decks
18%synergy
Necropotence
25%inclusion2 decks8 decks
10%synergy
Ancient Tomb
13%inclusion1 decks8 decks
1%synergy
Bolas's Citadel
13%inclusion1 decks8 decks
-16%synergy
Mana Vault
13%inclusion1 decks8 decks
6%synergy
Creatures
Crypt Rats
50%inclusion4 decks8 decks
45%synergy
Lord Skitter's Butcher
50%inclusion4 decks8 decks
47%synergy
Chittering Skitterling
50%inclusion4 decks8 decks
49%synergy
Septic Rats
50%inclusion4 decks8 decks
48%synergy
Gnat Miser
50%inclusion4 decks8 decks
47%synergy
Rat Colony
50%inclusion4 decks8 decks
44%synergy
Burglar Rat
38%inclusion3 decks8 decks
27%synergy
Ayara, First of Locthwain
38%inclusion3 decks8 decks
12%synergy
Tangled Colony
38%inclusion3 decks8 decks
34%synergy
Ink-Eyes, Servant of Oni
38%inclusion3 decks8 decks
34%synergy
Swarm of Rats
38%inclusion3 decks8 decks
35%synergy
Chittering Witch
38%inclusion3 decks8 decks
33%synergy
Valley Rotcaller
38%inclusion3 decks8 decks
35%synergy
Ratcatcher
38%inclusion3 decks8 decks
34%synergy
Drainpipe Vermin
38%inclusion3 decks8 decks
36%synergy
Chittering Rats
25%inclusion2 decks8 decks
24%synergy
Gnawing Vermin
25%inclusion2 decks8 decks
23%synergy
Filth
25%inclusion2 decks8 decks
23%synergy
Species Specialist
25%inclusion2 decks8 decks
22%synergy
Locust Miser
25%inclusion2 decks8 decks
23%synergy
Voracious Vermin
25%inclusion2 decks8 decks
22%synergy
Twisted Sewer-Witch
25%inclusion2 decks8 decks
23%synergy
Changeling Outcast
25%inclusion2 decks8 decks
20%synergy
Ruin Rat
25%inclusion2 decks8 decks
24%synergy
Refurbished Familiar
13%inclusion1 decks8 decks
10%synergy
Bog Rats
13%inclusion1 decks8 decks
12%synergy
Mirkwood Bats
13%inclusion1 decks8 decks
4%synergy
Core Prowler
13%inclusion1 decks8 decks
12%synergy
Relentless Rats
13%inclusion1 decks8 decks
11%synergy
Nezumi Graverobber
13%inclusion1 decks8 decks
11%synergy
Graveshifter
13%inclusion1 decks8 decks
11%synergy
Vampire Cutthroat
13%inclusion1 decks8 decks
10%synergy
Ravenous Rats
13%inclusion1 decks8 decks
11%synergy
Ruthless Radrat
13%inclusion1 decks8 decks
12%synergy
Roaming Throne
13%inclusion1 decks8 decks
9%synergy
Nezumi Bladeblesser
13%inclusion1 decks8 decks
12%synergy
Insatiable Frugivore
13%inclusion1 decks8 decks
12%synergy
Bloodline Pretender
13%inclusion1 decks8 decks
12%synergy
Skullsnatcher
13%inclusion1 decks8 decks
12%synergy
Throat Slitter
13%inclusion1 decks8 decks
11%synergy
Zodiac Rat
13%inclusion1 decks8 decks
12%synergy
Sinuous Vermin
13%inclusion1 decks8 decks
12%synergy
Nirkana Revenant
13%inclusion1 decks8 decks
1%synergy
Razortooth Rats
13%inclusion1 decks8 decks
12%synergy
Vito, Thorn of the Dusk Rose
13%inclusion1 decks8 decks
2%synergy
Persistent Marshstalker
13%inclusion1 decks8 decks
10%synergy
Drana, Liberator of Malakir
13%inclusion1 decks8 decks
10%synergy
Jade-Cast Sentinel
13%inclusion1 decks8 decks
12%synergy
Nezumi Cutthroat
13%inclusion1 decks8 decks
12%synergy
Crypt Ghast
13%inclusion1 decks8 decks
-35%synergy
Instants
Whisper of the Dross
50%inclusion4 decks8 decks
47%synergy
Village Rites
50%inclusion4 decks8 decks
25%synergy
Grim Affliction
38%inclusion3 decks8 decks
36%synergy
Cabal Ritual
38%inclusion3 decks8 decks
19%synergy
Hagra Mauling
25%inclusion2 decks8 decks
21%synergy
Rat Out
25%inclusion2 decks8 decks
24%synergy
Not Dead After All
25%inclusion2 decks8 decks
14%synergy
Consuming Corruption
25%inclusion2 decks8 decks
9%synergy
Anoint with Affliction
25%inclusion2 decks8 decks
24%synergy
Defile
25%inclusion2 decks8 decks
-12%synergy
Undying Malice
25%inclusion2 decks8 decks
15%synergy
Murder
25%inclusion2 decks8 decks
15%synergy
Tainted Strike
25%inclusion2 decks8 decks
22%synergy
Feign Death
25%inclusion2 decks8 decks
17%synergy
Zuko's Conviction
25%inclusion1 decks4 decks
24%synergy
Fight On!
17%inclusion1 decks6 decks
14%synergy
Deadly Rollick
13%inclusion1 decks8 decks
-12%synergy
Fell the Profane
13%inclusion1 decks8 decks
-6%synergy
Cut Down
13%inclusion1 decks8 decks
9%synergy
Sheoldred's Edict
13%inclusion1 decks8 decks
-2%synergy
Entomb
13%inclusion1 decks8 decks
0%synergy
Go for the Throat
13%inclusion1 decks8 decks
-11%synergy
Snuff Out
13%inclusion1 decks8 decks
-1%synergy
Undying Evil
13%inclusion1 decks8 decks
9%synergy
Deadly Dispute
13%inclusion1 decks8 decks
-13%synergy
Grasp of Darkness
13%inclusion1 decks8 decks
11%synergy
Doom Blade
13%inclusion1 decks8 decks
5%synergy
Hellish Rebuke
13%inclusion1 decks8 decks
11%synergy
Supernatural Stamina
13%inclusion1 decks8 decks
5%synergy
Virulent Wound
13%inclusion1 decks8 decks
12%synergy
Withering Boon
13%inclusion1 decks8 decks
8%synergy
Raise the Draugr
13%inclusion1 decks8 decks
12%synergy
Infernal Grasp
13%inclusion1 decks8 decks
-13%synergy
Death Denied
13%inclusion1 decks8 decks
12%synergy
Presumed Dead
13%inclusion1 decks8 decks
12%synergy
Malakir Rebirth
13%inclusion1 decks8 decks
-10%synergy
You Are Already Dead
13%inclusion1 decks8 decks
12%synergy
Fake Your Own Death
13%inclusion1 decks8 decks
5%synergy
Baleful Mastery
13%inclusion1 decks8 decks
4%synergy
Corrupted Conviction
13%inclusion1 decks8 decks
0%synergy
Cremate
13%inclusion1 decks8 decks
11%synergy
Tragic Slip
13%inclusion1 decks8 decks
-7%synergy
Withering Torment
13%inclusion1 decks8 decks
-19%synergy
Sorceries
Feed the Swarm
50%inclusion4 decks8 decks
0%synergy
Reanimate
50%inclusion4 decks8 decks
10%synergy
Sign in Blood
38%inclusion3 decks8 decks
2%synergy
Vat Emergence
25%inclusion2 decks8 decks
24%synergy
Spread the Sickness
25%inclusion2 decks8 decks
24%synergy
Victimize
25%inclusion2 decks8 decks
-2%synergy
Patriarch's Bidding
25%inclusion2 decks8 decks
21%synergy
Revenge of the Rats
25%inclusion2 decks8 decks
22%synergy
Unearth
25%inclusion2 decks8 decks
16%synergy
Night's Whisper
25%inclusion2 decks8 decks
0%synergy
Final Parting
25%inclusion2 decks8 decks
20%synergy
Insatiable Avarice
25%inclusion2 decks8 decks
13%synergy
Toxic Deluge
25%inclusion2 decks8 decks
-12%synergy
Kindred Dominance
25%inclusion2 decks8 decks
20%synergy
Disentomb
25%inclusion2 decks8 decks
24%synergy
Plague of Vermin
25%inclusion2 decks8 decks
23%synergy
Diabolic Intent
13%inclusion1 decks8 decks
-2%synergy
Lively Dirge
13%inclusion1 decks8 decks
9%synergy
Damnable Pact
13%inclusion1 decks8 decks
8%synergy
Entreat the Dead
13%inclusion1 decks8 decks
12%synergy
Final Act
13%inclusion1 decks8 decks
11%synergy
Agadeem's Awakening
13%inclusion1 decks8 decks
5%synergy
Read the Bones
13%inclusion1 decks8 decks
-4%synergy
Mutilate
13%inclusion1 decks8 decks
-5%synergy
Profane Command
13%inclusion1 decks8 decks
11%synergy
Dark Petition
13%inclusion1 decks8 decks
9%synergy
Exsanguinate
13%inclusion1 decks8 decks
-12%synergy
Living Death
13%inclusion1 decks8 decks
2%synergy
In Garruk's Wake
13%inclusion1 decks8 decks
9%synergy
Stitch Together
13%inclusion1 decks8 decks
10%synergy
Dirge of Dread
13%inclusion1 decks8 decks
12%synergy
Geth's Summons
13%inclusion1 decks8 decks
12%synergy
Raise Dead
13%inclusion1 decks8 decks
11%synergy
Gruesome Fate
13%inclusion1 decks8 decks
10%synergy
Beseech the Queen
13%inclusion1 decks8 decks
6%synergy
Damnation
13%inclusion1 decks8 decks
-8%synergy
Utility Artifacts
Bontu's Monument
50%inclusion4 decks8 decks
22%synergy
Contagion Clasp
38%inclusion3 decks8 decks
35%synergy
Swiftfoot Boots
38%inclusion3 decks8 decks
6%synergy
Lightning Greaves
38%inclusion3 decks8 decks
4%synergy
Contagion Engine
25%inclusion2 decks8 decks
23%synergy
Coat of Arms
25%inclusion2 decks8 decks
22%synergy
Skullclamp
25%inclusion2 decks8 decks
3%synergy
Hall of Triumph
25%inclusion2 decks8 decks
25%synergy
Vanquisher's Banner
25%inclusion2 decks8 decks
21%synergy
Akroma's Memorial
25%inclusion2 decks8 decks
24%synergy
Jet Medallion
25%inclusion2 decks8 decks
-37%synergy
Thornbite Staff
25%inclusion2 decks8 decks
22%synergy
The Darkness Crystal
17%inclusion1 decks6 decks
-3%synergy
Leyline Axe
13%inclusion1 decks8 decks
12%synergy
Whip of Erebos
13%inclusion1 decks8 decks
2%synergy
Mimic Vat
13%inclusion1 decks8 decks
11%synergy
Sword of the Squeak
13%inclusion1 decks8 decks
12%synergy
Wishclaw Talisman
13%inclusion1 decks8 decks
6%synergy
Blade of the Bloodchief
13%inclusion1 decks8 decks
11%synergy
Banner of Kinship
13%inclusion1 decks8 decks
10%synergy
Phyrexian Altar
13%inclusion1 decks8 decks
-1%synergy
Expedition Map
13%inclusion1 decks8 decks
1%synergy
Well of Knowledge
13%inclusion1 decks8 decks
12%synergy
Door of Destinies
13%inclusion1 decks8 decks
10%synergy
Well of Lost Dreams
13%inclusion1 decks8 decks
11%synergy
Thrumming Stone
13%inclusion1 decks8 decks
8%synergy
Urza's Incubator
13%inclusion1 decks8 decks
11%synergy
Winter Moon
13%inclusion1 decks8 decks
11%synergy
Herald's Horn
13%inclusion1 decks8 decks
7%synergy
Conjurer's Closet
13%inclusion1 decks8 decks
10%synergy
Strionic Resonator
13%inclusion1 decks8 decks
11%synergy
Decimator Web
13%inclusion1 decks8 decks
12%synergy
Grafted Exoskeleton
13%inclusion1 decks8 decks
11%synergy
Enchantments
Vampiric Rites
50%inclusion4 decks8 decks
44%synergy
Black Market
25%inclusion2 decks8 decks
4%synergy
Phyrexian Reclamation
25%inclusion2 decks8 decks
15%synergy
Dictate of Erebos
25%inclusion2 decks8 decks
14%synergy
Intimidation
25%inclusion2 decks8 decks
24%synergy
Animate Dead
25%inclusion2 decks8 decks
8%synergy
Oversold Cemetery
25%inclusion2 decks8 decks
20%synergy
The Meathook Massacre
13%inclusion1 decks8 decks
-5%synergy
Contamination
13%inclusion1 decks8 decks
9%synergy
Necrosynthesis
13%inclusion1 decks8 decks
11%synergy
Haunted One
13%inclusion1 decks8 decks
10%synergy
Necromancy
13%inclusion1 decks8 decks
7%synergy
Sanguine Bond
13%inclusion1 decks8 decks
1%synergy
Conspiracy
13%inclusion1 decks8 decks
12%synergy
Phyresis
13%inclusion1 decks8 decks
10%synergy
Call of the Ring
13%inclusion1 decks8 decks
10%synergy
No Mercy
13%inclusion1 decks8 decks
5%synergy
Unholy Annex // Ritual Chamber
13%inclusion1 decks8 decks
10%synergy
Painful Quandary
13%inclusion1 decks8 decks
2%synergy
Chthonian Nightmare
13%inclusion1 decks8 decks
9%synergy
Black Market Connections
13%inclusion1 decks8 decks
-11%synergy
Dark Prophecy
13%inclusion1 decks8 decks
9%synergy
Leyline of the Void
13%inclusion1 decks8 decks
11%synergy
Virtue of Persistence
13%inclusion1 decks8 decks
7%synergy
Bad Moon
13%inclusion1 decks8 decks
9%synergy
Necrogen Communion
13%inclusion1 decks8 decks
11%synergy
Planeswalkers
Liliana of the Dark Realms
25%inclusion2 decks8 decks
11%synergy
Utility Lands
Swarmyard
75%inclusion6 decks8 decks
69%synergy
Cabal Coffers
75%inclusion6 decks8 decks
20%synergy
Karn's Bastion
75%inclusion6 decks8 decks
71%synergy
Bojuka Bog
63%inclusion5 decks8 decks
16%synergy
Urborg, Tomb of Yawgmoth
50%inclusion4 decks8 decks
12%synergy
Cabal Stronghold
38%inclusion3 decks8 decks
3%synergy
Rogue's Passage
38%inclusion3 decks8 decks
18%synergy
Mortuary Mire
25%inclusion2 decks8 decks
12%synergy
Memorial to Folly
25%inclusion2 decks8 decks
22%synergy
Witch's Cottage
25%inclusion2 decks8 decks
0%synergy
War Room
25%inclusion2 decks8 decks
9%synergy
Nykthos, Shrine to Nyx
25%inclusion2 decks8 decks
-5%synergy
Castle Locthwain
25%inclusion2 decks8 decks
8%synergy
Reliquary Tower
25%inclusion2 decks8 decks
-5%synergy
Shizo, Death's Storehouse
13%inclusion1 decks8 decks
2%synergy
Westvale Abbey
13%inclusion1 decks8 decks
6%synergy
Phyrexian Tower
13%inclusion1 decks8 decks
-13%synergy
Barren Moor
13%inclusion1 decks8 decks
3%synergy
Urza's Tower
13%inclusion1 decks8 decks
12%synergy
Urza's Mine
13%inclusion1 decks8 decks
12%synergy
The Black Gate
13%inclusion1 decks8 decks
9%synergy
Volrath's Stronghold
13%inclusion1 decks8 decks
9%synergy
Takenuma, Abandoned Mire
13%inclusion1 decks8 decks
-3%synergy
Mudflat Village
13%inclusion1 decks8 decks
10%synergy
Three Tree City
13%inclusion1 decks8 decks
8%synergy
Urza's Power Plant
13%inclusion1 decks8 decks
12%synergy
Access Tunnel
13%inclusion1 decks8 decks
9%synergy
Mana Artifacts
Sol Ring
75%inclusion6 decks8 decks
-11%synergy
Glistening Sphere
63%inclusion5 decks8 decks
61%synergy
Staff of Compleation
50%inclusion4 decks8 decks
48%synergy
Everflowing Chalice
25%inclusion2 decks8 decks
19%synergy
Arcane Signet
25%inclusion2 decks8 decks
-37%synergy
Patchwork Banner
25%inclusion2 decks8 decks
21%synergy
Mind Stone
25%inclusion2 decks8 decks
-4%synergy
Commander's Sphere
13%inclusion1 decks8 decks
4%synergy
Astral Cornucopia
13%inclusion1 decks8 decks
12%synergy
Replicating Ring
13%inclusion1 decks8 decks
12%synergy
Heraldic Banner
13%inclusion1 decks8 decks
7%synergy
Throne of Eldraine
13%inclusion1 decks8 decks
3%synergy
Fellwar Stone
13%inclusion1 decks8 decks
-2%synergy
Thought Vessel
13%inclusion1 decks8 decks
-13%synergy
Star Compass
13%inclusion1 decks8 decks
12%synergy
Sceptre of Eternal Glory
13%inclusion1 decks8 decks
4%synergy
Lands
Swamp
100%inclusion8 decks8 decks
5%synergy
Path of Ancestry
50%inclusion4 decks8 decks
45%synergy
Cavern of Souls
38%inclusion3 decks8 decks
31%synergy
Hagra Mauling
25%inclusion2 decks8 decks
21%synergy
Fell the Profane
13%inclusion1 decks8 decks
-6%synergy
Myriad Landscape
13%inclusion1 decks8 decks
-13%synergy
Agadeem's Awakening
13%inclusion1 decks8 decks
5%synergy
Malakir Rebirth
13%inclusion1 decks8 decks
-10%synergy
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