Karumonix, the Rat King (Commander) - Infect

Karumonix, the Rat King
Rank #381
524decks
As CommanderAs CardAverage DeckDecks
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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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Sorceries
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Enchantments
Planeswalkers
Utility Lands
Mana Artifacts
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Decorum Dissertation
1.9%inclusion1 decks54 decks
-3%synergy
Ral Zarek, Guest Lecturer
1.5%inclusion1 decks65 decks
0%synergy
Grave Researcher
1.5%inclusion1 decks65 decks
-5%synergy
Withering Curse
1.5%inclusion1 decks65 decks
-1%synergy
High Synergy Cards
Blightbelly Rat
92%inclusion481 decks524 decks
88%synergy
Piper of the Swarm
89%inclusion465 decks524 decks
82%synergy
Ichor Rats
83%inclusion437 decks524 decks
80%synergy
Infectious Inquiry
82%inclusion428 decks524 decks
79%synergy
Pack Rat
80%inclusion421 decks524 decks
74%synergy
Ogre Slumlord
83%inclusion433 decks524 decks
73%synergy
Marrow-Gnawer
75%inclusion392 decks524 decks
71%synergy
Vraska's Fall
75%inclusion391 decks524 decks
71%synergy
Septic Rats
72%inclusion378 decks524 decks
70%synergy
Drown in Ichor
74%inclusion388 decks524 decks
70%synergy
Top Cards
Lord Skitter, Sewer King
77%inclusion401 decks524 decks
68%synergy
Rancid Rats
71%inclusion374 decks524 decks
69%synergy
Typhoid Rats
69%inclusion361 decks524 decks
65%synergy
Lord Skitter's Butcher
67%inclusion351 decks524 decks
64%synergy
Tangled Colony
63%inclusion331 decks524 decks
60%synergy
Whisper of the Dross
61%inclusion322 decks524 decks
59%synergy
Dark Ritual
61%inclusion322 decks524 decks
-5%synergy
Crypt Rats
60%inclusion316 decks524 decks
56%synergy
Phyresis Outbreak
60%inclusion315 decks524 decks
58%synergy
Stronghold Rats
56%inclusion291 decks524 decks
52%synergy
Game Changers
Demonic Tutor
17%inclusion90 decks524 decks
-10%synergy
Bolas's Citadel
12%inclusion65 decks524 decks
-16%synergy
Vampiric Tutor
12%inclusion61 decks524 decks
-9%synergy
Creatures
Voracious Vermin
55%inclusion287 decks524 decks
52%synergy
Burglar Rat
54%inclusion282 decks524 decks
43%synergy
Persistent Marshstalker
49%inclusion228 decks470 decks
46%synergy
Gnat Miser
48%inclusion252 decks524 decks
45%synergy
Chittering Skitterling
46%inclusion243 decks524 decks
45%synergy
Wave of Rats
46%inclusion239 decks524 decks
44%synergy
Changeling Outcast
43%inclusion227 decks524 decks
38%synergy
Ratcatcher
43%inclusion224 decks524 decks
39%synergy
Rat Colony
38%inclusion201 decks524 decks
33%synergy
Ashcoat of the Shadow Swarm
35%inclusion183 decks524 decks
31%synergy
Nezumi Informant
34%inclusion180 decks524 decks
28%synergy
Chittering Witch
34%inclusion178 decks524 decks
30%synergy
Pestilence Rats
33%inclusion175 decks524 decks
31%synergy
Nezumi Prowler
33%inclusion174 decks524 decks
32%synergy
Ink-Eyes, Servant of Oni
33%inclusion171 decks524 decks
29%synergy
Nashi, Moon Sage's Scion
33%inclusion171 decks524 decks
29%synergy
Swarm of Rats
32%inclusion170 decks524 decks
30%synergy
Ruin Rat
32%inclusion167 decks524 decks
31%synergy
Nezumi Cutthroat
32%inclusion166 decks524 decks
31%synergy
Engine Rat
29%inclusion98 decks343 decks
27%synergy
Rat King, Pale Piper
28%inclusion31 decks112 decks
23%synergy
Throat Slitter
28%inclusion145 decks524 decks
26%synergy
Ravenous Rats
27%inclusion139 decks524 decks
25%synergy
Drainpipe Vermin
26%inclusion135 decks524 decks
24%synergy
Old Flitterfang
26%inclusion135 decks524 decks
25%synergy
Gnawing Vermin
26%inclusion134 decks524 decks
24%synergy
Twisted Sewer-Witch
25%inclusion132 decks524 decks
24%synergy
Ruthless Radrat
24%inclusion125 decks524 decks
23%synergy
Rat King, Verminister
24%inclusion33 decks139 decks
21%synergy
Razortooth Rats
22%inclusion114 decks524 decks
21%synergy
Locust Miser
20%inclusion107 decks524 decks
19%synergy
Valley Rotcaller
20%inclusion96 decks473 decks
18%synergy
Undercity Dire Rat
20%inclusion55 decks277 decks
18%synergy
Ayara, First of Locthwain
19%inclusion99 decks524 decks
-7%synergy
Species Specialist
19%inclusion97 decks524 decks
15%synergy
Rotting Rats
18%inclusion96 decks524 decks
15%synergy
Mukotai Ambusher
17%inclusion89 decks524 decks
16%synergy
Crypt Ghast
17%inclusion89 decks524 decks
-31%synergy
Nezumi Graverobber
16%inclusion84 decks524 decks
15%synergy
Sinuous Vermin
16%inclusion83 decks524 decks
15%synergy
Gray Merchant of Asphodel
16%inclusion82 decks524 decks
-35%synergy
Innocuous Rat
15%inclusion66 decks430 decks
14%synergy
Okiba-Gang Shinobi
15%inclusion76 decks524 decks
14%synergy
Refurbished Familiar
14%inclusion71 decks501 decks
12%synergy
Skullsnatcher
14%inclusion72 decks524 decks
13%synergy
Nezumi Bladeblesser
13%inclusion68 decks524 decks
12%synergy
Chittering Rats
12%inclusion63 decks524 decks
11%synergy
Elephant-Rat
11%inclusion25 decks229 decks
11%synergy
Relentless Rats
11%inclusion57 decks524 decks
9%synergy
Adaptive Automaton
11%inclusion57 decks524 decks
10%synergy
Instants
Village Rites
41%inclusion215 decks524 decks
16%synergy
Grim Affliction
40%inclusion209 decks524 decks
38%synergy
Defile
38%inclusion198 decks524 decks
2%synergy
Tainted Strike
34%inclusion178 decks524 decks
31%synergy
Go for the Throat
29%inclusion154 decks524 decks
6%synergy
Rat Out
29%inclusion154 decks524 decks
28%synergy
Anoint with Affliction
26%inclusion136 decks524 decks
25%synergy
Corrupted Conviction
24%inclusion128 decks524 decks
12%synergy
Deadly Dispute
20%inclusion105 decks524 decks
-6%synergy
Virulent Wound
18%inclusion96 decks524 decks
18%synergy
Tragic Slip
18%inclusion93 decks524 decks
-2%synergy
Infernal Grasp
17%inclusion91 decks524 decks
-8%synergy
Withering Torment
16%inclusion70 decks431 decks
-15%synergy
Murder
16%inclusion83 decks524 decks
6%synergy
Fell the Profane
14%inclusion71 decks516 decks
-5%synergy
Malakir Rebirth
13%inclusion68 decks524 decks
-10%synergy
Deadly Rollick
11%inclusion60 decks524 decks
-13%synergy
Foul-Tongue Shriek
11%inclusion56 decks524 decks
9%synergy
Consuming Corruption
11%inclusion54 decks510 decks
-5%synergy
Raise the Draugr
10%inclusion55 decks524 decks
10%synergy
Hero's Downfall
8.8%inclusion46 decks524 decks
2%synergy
Gravepurge
8.8%inclusion46 decks524 decks
7%synergy
Not Dead After All
8.6%inclusion45 decks524 decks
-3%synergy
Bitter Triumph
8.0%inclusion42 decks524 decks
-2%synergy
Doom Blade
7.8%inclusion41 decks524 decks
1%synergy
Sudden Spoiling
6.7%inclusion35 decks524 decks
-2%synergy
Offer Immortality
6.5%inclusion34 decks524 decks
4%synergy
Feign Death
6.3%inclusion33 decks524 decks
-2%synergy
Undying Malice
6.1%inclusion32 decks524 decks
-4%synergy
Sheoldred's Edict
5.9%inclusion31 decks524 decks
-9%synergy
Cabal Ritual
5.7%inclusion30 decks524 decks
-12%synergy
Baleful Mastery
5.7%inclusion30 decks524 decks
-3%synergy
Altar's Reap
5.2%inclusion27 decks524 decks
3%synergy
Sorceries
Feed the Swarm
40%inclusion207 decks524 decks
-11%synergy
Revenge of the Rats
37%inclusion149 decks402 decks
34%synergy
Vat Emergence
37%inclusion192 decks524 decks
35%synergy
Crippling Fear
33%inclusion175 decks524 decks
30%synergy
Sign in Blood
32%inclusion167 decks524 decks
-3%synergy
Kindred Dominance
26%inclusion138 decks524 decks
22%synergy
Spread the Sickness
26%inclusion137 decks524 decks
25%synergy
Patriarch's Bidding
25%inclusion132 decks524 decks
21%synergy
Night's Whisper
24%inclusion124 decks524 decks
-1%synergy
Swarmyard Massacre
23%inclusion109 decks467 decks
21%synergy
Read the Bones
21%inclusion108 decks524 decks
4%synergy
Bloodline Bidding
19%inclusion29 decks152 decks
15%synergy
Feed the Infection
18%inclusion92 decks524 decks
17%synergy
Caress of Phyrexia
17%inclusion88 decks524 decks
16%synergy
Unearth
16%inclusion82 decks524 decks
7%synergy
Geth's Summons
15%inclusion77 decks524 decks
14%synergy
Plague of Vermin
14%inclusion73 decks524 decks
12%synergy
Diabolic Tutor
12%inclusion64 decks524 decks
-2%synergy
Toxic Deluge
11%inclusion59 decks524 decks
-26%synergy
Lab Rats
10%inclusion53 decks524 decks
10%synergy
Victimize
10%inclusion52 decks524 decks
-17%synergy
Reanimate
10%inclusion52 decks524 decks
-30%synergy
Damnation
9.4%inclusion49 decks524 decks
-11%synergy
Diabolic Intent
9.2%inclusion48 decks524 decks
-6%synergy
Echoing Return
8.8%inclusion46 decks524 decks
6%synergy
Mutilate
8.8%inclusion46 decks524 decks
-8%synergy
Insatiable Avarice
7.6%inclusion40 decks524 decks
-4%synergy
Fell
7.6%inclusion36 decks473 decks
4%synergy
Pact of the Serpent
7.3%inclusion38 decks524 decks
6%synergy
Gruesome Fate
7.1%inclusion37 decks524 decks
5%synergy
Forever Young
6.9%inclusion36 decks524 decks
5%synergy
Bubbling Muck
6.7%inclusion35 decks524 decks
-9%synergy
Haunting Voyage
6.5%inclusion34 decks524 decks
5%synergy
Splinter's Technique
5.8%inclusion8 decks139 decks
4%synergy
Return from Extinction
5.5%inclusion29 decks524 decks
5%synergy
Psychic Whorl
5.4%inclusion25 decks467 decks
5%synergy
Eaten Alive
5.3%inclusion28 decks524 decks
2%synergy
Utility Artifacts
Bontu's Monument
53%inclusion280 decks524 decks
25%synergy
Jet Medallion
52%inclusion271 decks524 decks
-10%synergy
Herald's Horn
43%inclusion224 decks524 decks
37%synergy
Contagion Clasp
40%inclusion211 decks524 decks
38%synergy
Skullclamp
31%inclusion165 decks524 decks
9%synergy
Vanquisher's Banner
28%inclusion146 decks524 decks
24%synergy
Contagion Engine
24%inclusion126 decks524 decks
22%synergy
Swiftfoot Boots
19%inclusion100 decks524 decks
-12%synergy
Grafted Exoskeleton
19%inclusion100 decks524 decks
18%synergy
Prosthetic Injector
15%inclusion79 decks524 decks
15%synergy
Lightning Greaves
13%inclusion69 decks524 decks
-20%synergy
Thrumming Stone
13%inclusion67 decks524 decks
9%synergy
Whip of Erebos
12%inclusion64 decks524 decks
1%synergy
Door of Destinies
12%inclusion63 decks524 decks
10%synergy
Coat of Arms
11%inclusion59 decks524 decks
9%synergy
Icon of Ancestry
11%inclusion56 decks524 decks
10%synergy
Chronicle of Victory
8.4%inclusion13 decks154 decks
6%synergy
Sword of Truth and Justice
8.0%inclusion42 decks524 decks
7%synergy
Whispersilk Cloak
7.4%inclusion39 decks524 decks
1%synergy
Banner of Kinship
7.2%inclusion29 decks403 decks
5%synergy
The Darkness Crystal
7.2%inclusion20 decks278 decks
-13%synergy
Wayfarer's Bauble
5.9%inclusion31 decks524 decks
-9%synergy
Expedition Map
5.7%inclusion30 decks524 decks
-6%synergy
Eldrazi Monument
5.3%inclusion28 decks524 decks
4%synergy
Vat of Rebirth
5.2%inclusion27 decks524 decks
2%synergy
Enchantments
Necrogen Communion
52%inclusion275 decks524 decks
51%synergy
Phyrexian Arena
40%inclusion210 decks524 decks
0%synergy
Cover of Darkness
38%inclusion197 decks524 decks
35%synergy
Phyresis
34%inclusion178 decks524 decks
32%synergy
Oversold Cemetery
22%inclusion113 decks524 decks
16%synergy
Haunted One
21%inclusion112 decks524 decks
19%synergy
Bad Moon
19%inclusion101 decks524 decks
16%synergy
Grave Pact
17%inclusion89 decks524 decks
-2%synergy
Tribute to Horobi
15%inclusion76 decks524 decks
13%synergy
Black Market
14%inclusion75 decks524 decks
-7%synergy
Black Market Connections
14%inclusion74 decks524 decks
-10%synergy
Lord Skitter's Blessing
10%inclusion54 decks524 decks
10%synergy
Vampiric Rites
10%inclusion51 decks524 decks
4%synergy
Intimidation
9.2%inclusion48 decks524 decks
9%synergy
Relic Putrescence
8.4%inclusion44 decks524 decks
8%synergy
Phyrexian Reclamation
8.0%inclusion42 decks524 decks
-2%synergy
Snake Cult Initiation
7.4%inclusion39 decks524 decks
7%synergy
Glistening Oil
7.3%inclusion38 decks524 decks
7%synergy
Dictate of Erebos
6.3%inclusion33 decks524 decks
-5%synergy
Planeswalkers
Vraska, Betrayal's Sting
39%inclusion203 decks524 decks
36%synergy
Liliana of the Dark Realms
10%inclusion52 decks524 decks
-4%synergy
Utility Lands
Karn's Bastion
63%inclusion331 decks524 decks
59%synergy
Swarmyard
63%inclusion330 decks524 decks
57%synergy
Bojuka Bog
56%inclusion296 decks524 decks
10%synergy
Rogue's Passage
47%inclusion248 decks524 decks
28%synergy
Mudflat Village
44%inclusion210 decks480 decks
41%synergy
Cabal Coffers
36%inclusion191 decks524 decks
-18%synergy
Witch's Cottage
31%inclusion164 decks524 decks
7%synergy
Mortuary Mire
26%inclusion136 decks524 decks
13%synergy
Cabal Stronghold
24%inclusion127 decks524 decks
-10%synergy
Urborg, Tomb of Yawgmoth
24%inclusion126 decks524 decks
-13%synergy
Access Tunnel
22%inclusion117 decks524 decks
19%synergy
Nykthos, Shrine to Nyx
21%inclusion108 decks524 decks
-9%synergy
Three Tree City
21%inclusion97 decks473 decks
16%synergy
Reliquary Tower
19%inclusion101 decks524 decks
-11%synergy
Phyrexian Tower
16%inclusion82 decks524 decks
-10%synergy
Secret Tunnel
14%inclusion26 decks191 decks
12%synergy
Crypt of Agadeem
13%inclusion68 decks524 decks
2%synergy
Barren Moor
13%inclusion67 decks524 decks
3%synergy
Castle Locthwain
13%inclusion67 decks524 decks
-4%synergy
Shizo, Death's Storehouse
10%inclusion54 decks524 decks
0%synergy
War Room
9.4%inclusion49 decks524 decks
-7%synergy
Takenuma, Abandoned Mire
8.0%inclusion42 decks524 decks
-8%synergy
Inkmoth Nexus
7.8%inclusion41 decks524 decks
7%synergy
The Dross Pits
7.8%inclusion41 decks524 decks
6%synergy
Temple of the False God
7.3%inclusion38 decks524 decks
-1%synergy
Minas Morgul, Dark Fortress
7.1%inclusion37 decks524 decks
4%synergy
Everglades
5.2%inclusion27 decks524 decks
4%synergy
Mana Artifacts
Sol Ring
80%inclusion420 decks524 decks
-6%synergy
Glistening Sphere
51%inclusion265 decks524 decks
49%synergy
Arcane Signet
49%inclusion255 decks524 decks
-13%synergy
Staff of Compleation
26%inclusion135 decks524 decks
24%synergy
Patchwork Banner
23%inclusion106 decks470 decks
18%synergy
Charcoal Diamond
19%inclusion99 decks524 decks
-3%synergy
Mind Stone
17%inclusion89 decks524 decks
-12%synergy
Phyrexian Atlas
14%inclusion74 decks524 decks
14%synergy
Heraldic Banner
14%inclusion73 decks524 decks
9%synergy
Caged Sun
8.6%inclusion45 decks524 decks
-3%synergy
The Soul Stone
7.6%inclusion18 decks238 decks
-7%synergy
Commander's Sphere
7.4%inclusion39 decks524 decks
-1%synergy
Thought Vessel
6.5%inclusion34 decks524 decks
-19%synergy
Lands
Swamp
98%inclusion514 decks524 decks
3%synergy
Path of Ancestry
41%inclusion213 decks524 decks
35%synergy
Myriad Landscape
22%inclusion116 decks524 decks
-3%synergy
Cavern of Souls
15%inclusion79 decks524 decks
8%synergy
Fell the Profane
14%inclusion71 decks516 decks
-5%synergy
Malakir Rebirth
13%inclusion68 decks524 decks
-10%synergy
Big Apple, 3 a.m.
12%inclusion13 decks112 decks
10%synergy
Command Tower
10%inclusion51 decks524 decks
4%synergy
Escape Tunnel
9.2%inclusion48 decks524 decks
8%synergy
Evolving Wilds
6.7%inclusion35 decks524 decks
3%synergy
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