Karumonix, the Rat King (Commander) - Upgraded Rats

Karumonix, the Rat King
Rank #384
23decks
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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Enchantments
Planeswalkers
Utility Lands
Mana Artifacts
Lands
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Rat King, Pale Piper
45%inclusion5 decks11 decks
41%synergy
Big Apple, 3 a.m.
27%inclusion3 decks11 decks
25%synergy
Shredder's Technique
25%inclusion3 decks12 decks
21%synergy
Rat King, Verminister
15%inclusion2 decks13 decks
12%synergy
High Synergy Cards
Infectious Inquiry
91%inclusion21 decks23 decks
89%synergy
Ichor Rats
91%inclusion21 decks23 decks
88%synergy
Blightbelly Rat
91%inclusion21 decks23 decks
88%synergy
Piper of the Swarm
91%inclusion21 decks23 decks
84%synergy
Marrow-Gnawer
83%inclusion19 decks23 decks
79%synergy
Vraska's Fall
83%inclusion19 decks23 decks
79%synergy
Drown in Ichor
78%inclusion18 decks23 decks
74%synergy
Karn's Bastion
78%inclusion18 decks23 decks
74%synergy
Lord Skitter, Sewer King
83%inclusion19 decks23 decks
74%synergy
Ogre Slumlord
83%inclusion19 decks23 decks
73%synergy
Top Cards
Septic Rats
74%inclusion17 decks23 decks
72%synergy
Pack Rat
70%inclusion16 decks23 decks
64%synergy
Herald's Horn
65%inclusion15 decks23 decks
59%synergy
Stronghold Rats
65%inclusion15 decks23 decks
61%synergy
Whisper of the Dross
61%inclusion14 decks23 decks
58%synergy
Tangled Colony
61%inclusion14 decks23 decks
58%synergy
Dark Ritual
61%inclusion14 decks23 decks
-6%synergy
Crypt Rats
57%inclusion13 decks23 decks
52%synergy
Burglar Rat
57%inclusion13 decks23 decks
46%synergy
Lord Skitter's Butcher
57%inclusion13 decks23 decks
53%synergy
Game Changers
Vampiric Tutor
35%inclusion8 decks23 decks
14%synergy
Demonic Tutor
30%inclusion7 decks23 decks
3%synergy
Bolas's Citadel
8.7%inclusion2 decks23 decks
-20%synergy
Creatures
Rancid Rats
57%inclusion13 decks23 decks
54%synergy
Persistent Marshstalker
52%inclusion12 decks23 decks
49%synergy
Voracious Vermin
52%inclusion12 decks23 decks
49%synergy
Ratcatcher
52%inclusion12 decks23 decks
49%synergy
Gnat Miser
52%inclusion12 decks23 decks
49%synergy
Typhoid Rats
52%inclusion12 decks23 decks
48%synergy
Rat Colony
52%inclusion12 decks23 decks
47%synergy
Chittering Skitterling
48%inclusion11 decks23 decks
47%synergy
Nezumi Informant
48%inclusion11 decks23 decks
41%synergy
Ashcoat of the Shadow Swarm
43%inclusion10 decks23 decks
40%synergy
Nashi, Moon Sage's Scion
43%inclusion10 decks23 decks
40%synergy
Ink-Eyes, Servant of Oni
39%inclusion9 decks23 decks
36%synergy
Wave of Rats
39%inclusion9 decks23 decks
37%synergy
Ayara, First of Locthwain
35%inclusion8 decks23 decks
9%synergy
Throat Slitter
30%inclusion7 decks23 decks
29%synergy
Pestilence Rats
30%inclusion7 decks23 decks
28%synergy
Gnawing Vermin
26%inclusion6 decks23 decks
25%synergy
Gray Merchant of Asphodel
26%inclusion6 decks23 decks
-25%synergy
Locust Miser
26%inclusion6 decks23 decks
24%synergy
Swarm of Rats
26%inclusion6 decks23 decks
24%synergy
Chittering Witch
26%inclusion6 decks23 decks
22%synergy
Changeling Outcast
26%inclusion6 decks23 decks
21%synergy
Nezumi Prowler
26%inclusion6 decks23 decks
25%synergy
Undercity Dire Rat
25%inclusion5 decks20 decks
23%synergy
Ravenous Rats
22%inclusion5 decks23 decks
20%synergy
Twisted Sewer-Witch
22%inclusion5 decks23 decks
20%synergy
Nezumi Cutthroat
22%inclusion5 decks23 decks
21%synergy
Bog Rats
17%inclusion4 decks23 decks
17%synergy
Species Specialist
17%inclusion4 decks23 decks
14%synergy
Yawgmoth, Thran Physician
17%inclusion4 decks23 decks
7%synergy
Crypt Ghast
17%inclusion4 decks23 decks
-30%synergy
Ruin Rat
17%inclusion4 decks23 decks
16%synergy
Adaptive Automaton
13%inclusion3 decks23 decks
12%synergy
Razortooth Rats
13%inclusion3 decks23 decks
12%synergy
Valley Rotcaller
13%inclusion3 decks23 decks
10%synergy
Okiba-Gang Shinobi
13%inclusion3 decks23 decks
12%synergy
Patron of the Nezumi
8.7%inclusion2 decks23 decks
8%synergy
Chittering Rats
8.7%inclusion2 decks23 decks
8%synergy
Relentless Rats
8.7%inclusion2 decks23 decks
7%synergy
Nezumi Graverobber
8.7%inclusion2 decks23 decks
7%synergy
Ruthless Radrat
8.7%inclusion2 decks23 decks
8%synergy
Defiler of Flesh
8.7%inclusion2 decks23 decks
5%synergy
Filth
8.7%inclusion2 decks23 decks
6%synergy
Skullsnatcher
8.7%inclusion2 decks23 decks
8%synergy
Sinuous Vermin
8.7%inclusion2 decks23 decks
8%synergy
Drainpipe Vermin
8.7%inclusion2 decks23 decks
7%synergy
Nezumi Bone-Reader
8.7%inclusion2 decks23 decks
8%synergy
Instants
Go for the Throat
43%inclusion10 decks23 decks
20%synergy
Village Rites
43%inclusion10 decks23 decks
18%synergy
Grim Affliction
35%inclusion8 decks23 decks
33%synergy
Defile
35%inclusion8 decks23 decks
-2%synergy
Rat Out
26%inclusion6 decks23 decks
25%synergy
Anoint with Affliction
26%inclusion6 decks23 decks
26%synergy
Deadly Dispute
26%inclusion6 decks23 decks
0%synergy
Tainted Strike
26%inclusion6 decks23 decks
23%synergy
Deadly Rollick
22%inclusion5 decks23 decks
-3%synergy
Malakir Rebirth
22%inclusion5 decks23 decks
-1%synergy
Corrupted Conviction
22%inclusion5 decks23 decks
9%synergy
Withering Torment
22%inclusion5 decks23 decks
-10%synergy
Hagra Mauling
17%inclusion4 decks23 decks
13%synergy
Sheoldred's Edict
17%inclusion4 decks23 decks
3%synergy
Culling the Weak
17%inclusion4 decks23 decks
2%synergy
Extinguish the Light
17%inclusion4 decks23 decks
17%synergy
Infernal Grasp
17%inclusion4 decks23 decks
-8%synergy
Tragic Slip
17%inclusion4 decks23 decks
-2%synergy
Unbury
14%inclusion2 decks14 decks
14%synergy
Virulent Wound
13%inclusion3 decks23 decks
13%synergy
Sudden Spoiling
13%inclusion3 decks23 decks
4%synergy
Fell the Profane
8.7%inclusion2 decks23 decks
-10%synergy
Force of Despair
8.7%inclusion2 decks23 decks
1%synergy
Snuff Out
8.7%inclusion2 decks23 decks
-4%synergy
Not Dead After All
8.7%inclusion2 decks23 decks
-3%synergy
Supernatural Stamina
8.7%inclusion2 decks23 decks
1%synergy
Undying Malice
8.7%inclusion2 decks23 decks
-1%synergy
Murder
8.7%inclusion2 decks23 decks
-1%synergy
Feign Death
8.7%inclusion2 decks23 decks
1%synergy
Sorceries
Phyresis Outbreak
57%inclusion13 decks23 decks
55%synergy
Patriarch's Bidding
48%inclusion11 decks23 decks
44%synergy
Crippling Fear
48%inclusion11 decks23 decks
45%synergy
Revenge of the Rats
43%inclusion10 decks23 decks
40%synergy
Feed the Swarm
39%inclusion9 decks23 decks
-11%synergy
Sign in Blood
39%inclusion9 decks23 decks
4%synergy
Night's Whisper
35%inclusion8 decks23 decks
10%synergy
Bloodline Bidding
29%inclusion4 decks14 decks
24%synergy
Vat Emergence
26%inclusion6 decks23 decks
25%synergy
Feed the Infection
26%inclusion6 decks23 decks
25%synergy
Spread the Sickness
22%inclusion5 decks23 decks
21%synergy
Echoing Return
22%inclusion5 decks23 decks
19%synergy
Kindred Dominance
22%inclusion5 decks23 decks
17%synergy
Bubbling Muck
17%inclusion4 decks23 decks
2%synergy
Read the Bones
17%inclusion4 decks23 decks
0%synergy
Toxic Deluge
17%inclusion4 decks23 decks
-19%synergy
Damnation
17%inclusion4 decks23 decks
-3%synergy
Diabolic Intent
13%inclusion3 decks23 decks
-2%synergy
Swarmyard Massacre
13%inclusion3 decks23 decks
11%synergy
Caress of Phyrexia
13%inclusion3 decks23 decks
12%synergy
Reanimate
13%inclusion3 decks23 decks
-27%synergy
Black Sun's Zenith
8.7%inclusion2 decks23 decks
3%synergy
Diabolic Tutor
8.7%inclusion2 decks23 decks
-6%synergy
Profane Tutor
8.7%inclusion2 decks23 decks
4%synergy
Psychic Whorl
8.7%inclusion2 decks23 decks
8%synergy
Unearth
8.7%inclusion2 decks23 decks
0%synergy
Mutilate
8.7%inclusion2 decks23 decks
-8%synergy
Decree of Pain
8.7%inclusion2 decks23 decks
3%synergy
Annihilating Glare
8.7%inclusion2 decks23 decks
8%synergy
Insatiable Avarice
8.7%inclusion2 decks23 decks
-3%synergy
Geth's Summons
8.7%inclusion2 decks23 decks
8%synergy
Plague of Vermin
8.7%inclusion2 decks23 decks
6%synergy
Embrace Oblivion
5.3%inclusion1 decks19 decks
4%synergy
Utility Artifacts
Bontu's Monument
57%inclusion13 decks23 decks
28%synergy
Skullclamp
52%inclusion12 decks23 decks
30%synergy
Jet Medallion
52%inclusion12 decks23 decks
-10%synergy
Contagion Clasp
22%inclusion5 decks23 decks
19%synergy
Vanquisher's Banner
22%inclusion5 decks23 decks
18%synergy
Thrumming Stone
22%inclusion5 decks23 decks
18%synergy
Icon of Ancestry
17%inclusion4 decks23 decks
16%synergy
Wayfarer's Bauble
17%inclusion4 decks23 decks
2%synergy
Expedition Map
17%inclusion4 decks23 decks
6%synergy
Ashnod's Altar
13%inclusion3 decks23 decks
-7%synergy
Blade of Selves
13%inclusion3 decks23 decks
12%synergy
Swiftfoot Boots
13%inclusion3 decks23 decks
-18%synergy
Lightning Greaves
13%inclusion3 decks23 decks
-21%synergy
Grafted Exoskeleton
13%inclusion3 decks23 decks
12%synergy
The Darkness Crystal
10%inclusion2 decks20 decks
-10%synergy
Vat of Rebirth
8.7%inclusion2 decks23 decks
5%synergy
Contagion Engine
8.7%inclusion2 decks23 decks
7%synergy
Aetherflux Reservoir
8.7%inclusion2 decks23 decks
-1%synergy
Coat of Arms
8.7%inclusion2 decks23 decks
6%synergy
Banner of Kinship
8.7%inclusion2 decks23 decks
7%synergy
Sword of Hearth and Home
8.7%inclusion2 decks23 decks
7%synergy
Chronicle of Victory
7.1%inclusion1 decks14 decks
4%synergy
Enchantments
Necrogen Communion
48%inclusion11 decks23 decks
46%synergy
Cover of Darkness
43%inclusion10 decks23 decks
41%synergy
Phyrexian Arena
39%inclusion9 decks23 decks
-1%synergy
Phyresis
22%inclusion5 decks23 decks
20%synergy
Black Market Connections
22%inclusion5 decks23 decks
-2%synergy
Oversold Cemetery
17%inclusion4 decks23 decks
12%synergy
Bad Moon
17%inclusion4 decks23 decks
14%synergy
Grave Pact
13%inclusion3 decks23 decks
-6%synergy
Greed
8.7%inclusion2 decks23 decks
2%synergy
Glistening Oil
8.7%inclusion2 decks23 decks
8%synergy
Phyrexian Reclamation
8.7%inclusion2 decks23 decks
-1%synergy
Haunted One
8.7%inclusion2 decks23 decks
6%synergy
Tribute to Horobi
8.7%inclusion2 decks23 decks
8%synergy
Carnival of Souls
8.7%inclusion2 decks23 decks
8%synergy
Oubliette
8.7%inclusion2 decks23 decks
6%synergy
Lord Skitter's Blessing
8.7%inclusion2 decks23 decks
8%synergy
Dark Prophecy
8.7%inclusion2 decks23 decks
5%synergy
Planeswalkers
Vraska, Betrayal's Sting
30%inclusion7 decks23 decks
28%synergy
Liliana of the Dark Realms
8.7%inclusion2 decks23 decks
-5%synergy
Utility Lands
Bojuka Bog
70%inclusion16 decks23 decks
23%synergy
Cabal Coffers
70%inclusion16 decks23 decks
15%synergy
Swarmyard
65%inclusion15 decks23 decks
60%synergy
Rogue's Passage
48%inclusion11 decks23 decks
29%synergy
Witch's Cottage
43%inclusion10 decks23 decks
19%synergy
Mudflat Village
43%inclusion10 decks23 decks
41%synergy
Cabal Stronghold
35%inclusion8 decks23 decks
0%synergy
Mortuary Mire
30%inclusion7 decks23 decks
17%synergy
Nykthos, Shrine to Nyx
30%inclusion7 decks23 decks
1%synergy
Reliquary Tower
26%inclusion6 decks23 decks
-4%synergy
Three Tree City
26%inclusion6 decks23 decks
21%synergy
Urborg, Tomb of Yawgmoth
26%inclusion6 decks23 decks
-11%synergy
Barren Moor
22%inclusion5 decks23 decks
12%synergy
War Room
22%inclusion5 decks23 decks
6%synergy
Crypt of Agadeem
17%inclusion4 decks23 decks
6%synergy
Inkmoth Nexus
13%inclusion3 decks23 decks
12%synergy
Takenuma, Abandoned Mire
13%inclusion3 decks23 decks
-3%synergy
Castle Locthwain
13%inclusion3 decks23 decks
-4%synergy
Access Tunnel
13%inclusion3 decks23 decks
10%synergy
Phyrexian Tower
8.7%inclusion2 decks23 decks
-17%synergy
Desert of the Glorified
8.7%inclusion2 decks23 decks
6%synergy
Spymaster's Vault
8.7%inclusion2 decks23 decks
-1%synergy
The Dross Pits
8.7%inclusion2 decks23 decks
7%synergy
Minas Morgul, Dark Fortress
8.7%inclusion2 decks23 decks
6%synergy
Polluted Mire
8.7%inclusion2 decks23 decks
5%synergy
Peat Bog
8.7%inclusion2 decks23 decks
7%synergy
Secret Tunnel
5.9%inclusion1 decks17 decks
5%synergy
Susur Secundi, Void Altar
5.6%inclusion1 decks18 decks
-2%synergy
Mana Artifacts
Sol Ring
87%inclusion20 decks23 decks
1%synergy
Arcane Signet
52%inclusion12 decks23 decks
-10%synergy
Glistening Sphere
52%inclusion12 decks23 decks
51%synergy
Staff of Compleation
17%inclusion4 decks23 decks
16%synergy
Charcoal Diamond
17%inclusion4 decks23 decks
-5%synergy
Patchwork Banner
17%inclusion4 decks23 decks
13%synergy
Heraldic Banner
13%inclusion3 decks23 decks
8%synergy
Phyrexian Atlas
13%inclusion3 decks23 decks
13%synergy
The Soul Stone
11%inclusion2 decks18 decks
-3%synergy
Thought Vessel
8.7%inclusion2 decks23 decks
-17%synergy
Worn Powerstone
8.7%inclusion2 decks23 decks
4%synergy
Mind Stone
8.7%inclusion2 decks23 decks
-20%synergy
Sceptre of Eternal Glory
8.7%inclusion2 decks23 decks
0%synergy
Firdoch Core
7.1%inclusion1 decks14 decks
7%synergy
White Lotus Tile
5.9%inclusion1 decks17 decks
5%synergy
Lands
Swamp
100%inclusion23 decks23 decks
5%synergy
Path of Ancestry
43%inclusion10 decks23 decks
38%synergy
Cavern of Souls
22%inclusion5 decks23 decks
15%synergy
Malakir Rebirth
22%inclusion5 decks23 decks
-1%synergy
Hagra Mauling
17%inclusion4 decks23 decks
13%synergy
Command Tower
17%inclusion4 decks23 decks
12%synergy
Evolving Wilds
17%inclusion4 decks23 decks
14%synergy
Terramorphic Expanse
13%inclusion3 decks23 decks
10%synergy
Mirrex
13%inclusion3 decks23 decks
12%synergy
Fell the Profane
8.7%inclusion2 decks23 decks
-10%synergy
Myriad Landscape
8.7%inclusion2 decks23 decks
-17%synergy
Ash Barrens
8.7%inclusion2 decks23 decks
7%synergy
Daily Bugle Building
5.9%inclusion1 decks17 decks
5%synergy
Vibrant Cityscape
5.9%inclusion1 decks17 decks
5%synergy
Command Bridge
5.3%inclusion1 decks19 decks
5%synergy
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