Karumonix, the Rat King (Commander) - Rats

Karumonix, the Rat King
Rank #381
1,017decks
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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Arnyn, Deathbloom Botanist
4.8%inclusion2 decks42 decks
2%synergy
Emeritus of Woe
4.8%inclusion2 decks42 decks
-3%synergy
Pull from the Grave
2.0%inclusion1 decks51 decks
1%synergy
High Synergy Cards
Blightbelly Rat
91%inclusion923 decks1.02K decks
87%synergy
Piper of the Swarm
87%inclusion883 decks1.02K decks
80%synergy
Ichor Rats
80%inclusion813 decks1.02K decks
77%synergy
Pack Rat
83%inclusion844 decks1.02K decks
77%synergy
Ogre Slumlord
83%inclusion847 decks1.02K decks
73%synergy
Typhoid Rats
76%inclusion772 decks1.02K decks
72%synergy
Lord Skitter, Sewer King
78%inclusion798 decks1.02K decks
70%synergy
Rancid Rats
72%inclusion737 decks1.02K decks
70%synergy
Lord Skitter's Butcher
73%inclusion740 decks1.02K decks
70%synergy
Infectious Inquiry
71%inclusion726 decks1.02K decks
69%synergy
Top Cards
Marrow-Gnawer
71%inclusion727 decks1.02K decks
68%synergy
Septic Rats
69%inclusion703 decks1.02K decks
67%synergy
Vraska's Fall
68%inclusion696 decks1.02K decks
65%synergy
Tangled Colony
68%inclusion688 decks1.02K decks
65%synergy
Crypt Rats
67%inclusion681 decks1.02K decks
62%synergy
Drown in Ichor
64%inclusion654 decks1.02K decks
60%synergy
Burglar Rat
64%inclusion653 decks1.02K decks
53%synergy
Voracious Vermin
64%inclusion647 decks1.02K decks
61%synergy
Dark Ritual
57%inclusion582 decks1.02K decks
-9%synergy
Stronghold Rats
57%inclusion578 decks1.02K decks
53%synergy
Game Changers
Demonic Tutor
22%inclusion220 decks1.02K decks
-6%synergy
Vampiric Tutor
16%inclusion160 decks1.02K decks
-5%synergy
Bolas's Citadel
15%inclusion151 decks1.02K decks
-14%synergy
Creatures
Persistent Marshstalker
52%inclusion415 decks803 decks
49%synergy
Gnat Miser
52%inclusion524 decks1.02K decks
49%synergy
Rat Colony
49%inclusion503 decks1.02K decks
44%synergy
Chittering Skitterling
48%inclusion490 decks1.02K decks
47%synergy
Wave of Rats
48%inclusion488 decks1.02K decks
46%synergy
Ratcatcher
46%inclusion472 decks1.02K decks
43%synergy
Nezumi Informant
41%inclusion418 decks1.02K decks
34%synergy
Swarm of Rats
40%inclusion411 decks1.02K decks
38%synergy
Ashcoat of the Shadow Swarm
40%inclusion404 decks1.02K decks
36%synergy
Pestilence Rats
40%inclusion403 decks1.02K decks
38%synergy
Nashi, Moon Sage's Scion
38%inclusion388 decks1.02K decks
34%synergy
Changeling Outcast
38%inclusion387 decks1.02K decks
33%synergy
Nezumi Prowler
38%inclusion382 decks1.02K decks
36%synergy
Ink-Eyes, Servant of Oni
37%inclusion374 decks1.02K decks
34%synergy
Chittering Witch
36%inclusion371 decks1.02K decks
32%synergy
Ruin Rat
35%inclusion354 decks1.02K decks
33%synergy
Old Flitterfang
34%inclusion346 decks1.02K decks
33%synergy
Ravenous Rats
34%inclusion345 decks1.02K decks
32%synergy
Ruthless Radrat
33%inclusion334 decks1.02K decks
32%synergy
Gnawing Vermin
32%inclusion323 decks1.02K decks
30%synergy
Nezumi Cutthroat
30%inclusion305 decks1.02K decks
29%synergy
Drainpipe Vermin
28%inclusion281 decks1.02K decks
26%synergy
Engine Rat
27%inclusion59 decks216 decks
26%synergy
Throat Slitter
27%inclusion271 decks1.02K decks
25%synergy
Razortooth Rats
26%inclusion262 decks1.02K decks
25%synergy
Twisted Sewer-Witch
25%inclusion256 decks1.02K decks
24%synergy
Innocuous Rat
24%inclusion147 decks607 decks
23%synergy
Locust Miser
23%inclusion235 decks1.02K decks
22%synergy
Ayara, First of Locthwain
23%inclusion231 decks1.02K decks
-3%synergy
Rat King, Verminister
22%inclusion22 decks100 decks
19%synergy
Rat King, Pale Piper
22%inclusion18 decks83 decks
17%synergy
Valley Rotcaller
21%inclusion173 decks815 decks
19%synergy
Mukotai Ambusher
20%inclusion206 decks1.02K decks
19%synergy
Undercity Dire Rat
19%inclusion32 decks168 decks
17%synergy
Rotting Rats
19%inclusion192 decks1.02K decks
16%synergy
Species Specialist
18%inclusion186 decks1.02K decks
15%synergy
Daggerfang Duo
18%inclusion141 decks790 decks
17%synergy
Gray Merchant of Asphodel
18%inclusion181 decks1.02K decks
-33%synergy
Refurbished Familiar
17%inclusion163 decks945 decks
15%synergy
Nezumi Bladeblesser
17%inclusion171 decks1.02K decks
16%synergy
Okiba-Gang Shinobi
16%inclusion163 decks1.02K decks
15%synergy
Nezumi Graverobber
16%inclusion160 decks1.02K decks
14%synergy
Crypt Ghast
16%inclusion159 decks1.02K decks
-32%synergy
Sinuous Vermin
15%inclusion157 decks1.02K decks
15%synergy
Skullsnatcher
15%inclusion149 decks1.02K decks
14%synergy
Relentless Rats
14%inclusion141 decks1.02K decks
12%synergy
Chittering Rats
13%inclusion136 decks1.02K decks
13%synergy
Adaptive Automaton
12%inclusion126 decks1.02K decks
11%synergy
Nezumi Linkbreaker
12%inclusion124 decks1.02K decks
11%synergy
Nezumi Bone-Reader
12%inclusion117 decks1.02K decks
11%synergy
Instants
Whisper of the Dross
53%inclusion540 decks1.02K decks
50%synergy
Village Rites
45%inclusion455 decks1.02K decks
19%synergy
Defile
41%inclusion422 decks1.02K decks
5%synergy
Rat Out
32%inclusion329 decks1.02K decks
31%synergy
Go for the Throat
32%inclusion328 decks1.02K decks
9%synergy
Grim Affliction
30%inclusion306 decks1.02K decks
28%synergy
Corrupted Conviction
25%inclusion253 decks1.02K decks
12%synergy
Tainted Strike
21%inclusion216 decks1.02K decks
18%synergy
Anoint with Affliction
20%inclusion200 decks1.02K decks
19%synergy
Murder
19%inclusion198 decks1.02K decks
9%synergy
Tragic Slip
18%inclusion186 decks1.02K decks
-1%synergy
Deadly Dispute
18%inclusion181 decks1.02K decks
-8%synergy
Infernal Grasp
16%inclusion166 decks1.02K decks
-9%synergy
Withering Torment
16%inclusion97 decks614 decks
-16%synergy
Consuming Corruption
14%inclusion139 decks965 decks
-1%synergy
Foul-Tongue Shriek
13%inclusion137 decks1.02K decks
12%synergy
Raise the Draugr
13%inclusion129 decks1.02K decks
12%synergy
Deadly Rollick
13%inclusion128 decks1.02K decks
-12%synergy
Doom Blade
11%inclusion112 decks1.02K decks
4%synergy
Hero's Downfall
11%inclusion107 decks1.02K decks
4%synergy
Virulent Wound
10%inclusion103 decks1.02K decks
10%synergy
Malakir Rebirth
10%inclusion98 decks1.02K decks
-13%synergy
Bitter Triumph
9.1%inclusion93 decks1.02K decks
-1%synergy
Gravepurge
9.1%inclusion93 decks1.02K decks
8%synergy
Fell the Profane
9.0%inclusion89 decks984 decks
-10%synergy
Not Dead After All
7.5%inclusion76 decks1.02K decks
-4%synergy
Sudden Spoiling
7.3%inclusion74 decks1.02K decks
-2%synergy
Unbury
6.6%inclusion7 decks106 decks
6%synergy
Death Denied
6.4%inclusion65 decks1.02K decks
6%synergy
Altar's Reap
6.3%inclusion64 decks1.02K decks
4%synergy
Offer Immortality
6.2%inclusion63 decks1.02K decks
4%synergy
Sheoldred's Edict
5.8%inclusion59 decks1.02K decks
-9%synergy
Cabal Ritual
5.6%inclusion57 decks1.02K decks
-13%synergy
Feign Death
5.2%inclusion53 decks1.02K decks
-3%synergy
Sorceries
Phyresis Outbreak
50%inclusion509 decks1.02K decks
48%synergy
Feed the Swarm
41%inclusion414 decks1.02K decks
-10%synergy
Revenge of the Rats
39%inclusion179 decks458 decks
36%synergy
Crippling Fear
36%inclusion363 decks1.02K decks
33%synergy
Vat Emergence
32%inclusion324 decks1.02K decks
30%synergy
Sign in Blood
31%inclusion319 decks1.02K decks
-4%synergy
Patriarch's Bidding
31%inclusion317 decks1.02K decks
27%synergy
Swarmyard Massacre
26%inclusion203 decks790 decks
23%synergy
Kindred Dominance
25%inclusion258 decks1.02K decks
21%synergy
Spread the Sickness
22%inclusion226 decks1.02K decks
21%synergy
Read the Bones
19%inclusion197 decks1.02K decks
3%synergy
Bloodline Bidding
17%inclusion18 decks107 decks
12%synergy
Night's Whisper
16%inclusion167 decks1.02K decks
-8%synergy
Feed the Infection
16%inclusion163 decks1.02K decks
15%synergy
Unearth
14%inclusion140 decks1.02K decks
5%synergy
Plague of Vermin
14%inclusion138 decks1.02K decks
11%synergy
Damnation
13%inclusion128 decks1.02K decks
-8%synergy
Toxic Deluge
12%inclusion123 decks1.02K decks
-25%synergy
Diabolic Tutor
12%inclusion120 decks1.02K decks
-2%synergy
Caress of Phyrexia
11%inclusion116 decks1.02K decks
11%synergy
Geth's Summons
11%inclusion110 decks1.02K decks
10%synergy
Gruesome Fate
11%inclusion110 decks1.02K decks
9%synergy
Victimize
11%inclusion110 decks1.02K decks
-16%synergy
Mutilate
11%inclusion108 decks1.02K decks
-6%synergy
Lab Rats
11%inclusion108 decks1.02K decks
10%synergy
Diabolic Intent
9.0%inclusion92 decks1.02K decks
-6%synergy
Echoing Return
9.0%inclusion92 decks1.02K decks
6%synergy
Reanimate
8.8%inclusion90 decks1.02K decks
-31%synergy
Insatiable Avarice
8.0%inclusion81 decks1.02K decks
-4%synergy
Return from Extinction
8.0%inclusion81 decks1.02K decks
7%synergy
Pact of the Serpent
7.9%inclusion80 decks1.02K decks
6%synergy
Fell
7.9%inclusion64 decks815 decks
4%synergy
Forever Young
7.2%inclusion73 decks1.02K decks
6%synergy
Haunting Voyage
6.2%inclusion63 decks1.02K decks
5%synergy
Bubbling Muck
5.8%inclusion59 decks1.02K decks
-10%synergy
Psychic Whorl
5.6%inclusion44 decks790 decks
5%synergy
Eaten Alive
5.5%inclusion56 decks1.02K decks
2%synergy
In Garruk's Wake
5.0%inclusion51 decks1.02K decks
1%synergy
Splinter's Technique
5.0%inclusion5 decks100 decks
3%synergy
Utility Artifacts
Bontu's Monument
55%inclusion558 decks1.02K decks
26%synergy
Jet Medallion
52%inclusion531 decks1.02K decks
-10%synergy
Herald's Horn
45%inclusion454 decks1.02K decks
39%synergy
Skullclamp
36%inclusion369 decks1.02K decks
14%synergy
Contagion Clasp
32%inclusion328 decks1.02K decks
30%synergy
Vanquisher's Banner
31%inclusion317 decks1.02K decks
27%synergy
Swiftfoot Boots
21%inclusion210 decks1.02K decks
-11%synergy
Contagion Engine
16%inclusion165 decks1.02K decks
14%synergy
Banner of Kinship
16%inclusion75 decks465 decks
14%synergy
Coat of Arms
12%inclusion126 decks1.02K decks
10%synergy
Lightning Greaves
12%inclusion125 decks1.02K decks
-21%synergy
Icon of Ancestry
12%inclusion124 decks1.02K decks
11%synergy
Door of Destinies
12%inclusion124 decks1.02K decks
10%synergy
Whip of Erebos
11%inclusion115 decks1.02K decks
0%synergy
Chronicle of Victory
10%inclusion11 decks107 decks
7%synergy
Prosthetic Injector
9.4%inclusion96 decks1.02K decks
9%synergy
Grafted Exoskeleton
9.3%inclusion95 decks1.02K decks
8%synergy
Thrumming Stone
9.3%inclusion95 decks1.02K decks
5%synergy
The Darkness Crystal
8.9%inclusion15 decks168 decks
-11%synergy
Wayfarer's Bauble
7.0%inclusion71 decks1.02K decks
-8%synergy
Vat of Rebirth
6.3%inclusion64 decks1.02K decks
3%synergy
Hall of Triumph
6.0%inclusion61 decks1.02K decks
6%synergy
Eldrazi Monument
6.0%inclusion61 decks1.02K decks
4%synergy
Ashnod's Altar
5.9%inclusion60 decks1.02K decks
-14%synergy
Sword of the Squeak
5.6%inclusion44 decks790 decks
5%synergy
Sword of Truth and Justice
5.2%inclusion53 decks1.02K decks
4%synergy
Enchantments
Necrogen Communion
43%inclusion439 decks1.02K decks
41%synergy
Phyrexian Arena
37%inclusion376 decks1.02K decks
-3%synergy
Cover of Darkness
29%inclusion300 decks1.02K decks
27%synergy
Bad Moon
25%inclusion250 decks1.02K decks
21%synergy
Haunted One
23%inclusion235 decks1.02K decks
20%synergy
Oversold Cemetery
23%inclusion234 decks1.02K decks
18%synergy
Phyresis
22%inclusion225 decks1.02K decks
20%synergy
Grave Pact
17%inclusion177 decks1.02K decks
-2%synergy
Tribute to Horobi
16%inclusion161 decks1.02K decks
15%synergy
Black Market
16%inclusion160 decks1.02K decks
-5%synergy
Black Market Connections
14%inclusion147 decks1.02K decks
-9%synergy
Vampiric Rites
12%inclusion123 decks1.02K decks
6%synergy
Lord Skitter's Blessing
10%inclusion105 decks1.02K decks
10%synergy
Intimidation
8.2%inclusion83 decks1.02K decks
8%synergy
Dark Prophecy
6.5%inclusion66 decks1.02K decks
3%synergy
Dictate of Erebos
6.5%inclusion66 decks1.02K decks
-5%synergy
Phyrexian Reclamation
6.4%inclusion65 decks1.02K decks
-4%synergy
The Meathook Massacre
6.0%inclusion61 decks1.02K decks
-11%synergy
Relic Putrescence
5.0%inclusion51 decks1.02K decks
5%synergy
Planeswalkers
Vraska, Betrayal's Sting
30%inclusion306 decks1.02K decks
27%synergy
Liliana of the Dark Realms
11%inclusion110 decks1.02K decks
-3%synergy
Utility Lands
Swarmyard
53%inclusion543 decks1.02K decks
48%synergy
Bojuka Bog
50%inclusion511 decks1.02K decks
3%synergy
Karn's Bastion
50%inclusion505 decks1.02K decks
46%synergy
Rogue's Passage
40%inclusion408 decks1.02K decks
21%synergy
Mudflat Village
40%inclusion334 decks842 decks
37%synergy
Cabal Coffers
36%inclusion364 decks1.02K decks
-19%synergy
Witch's Cottage
33%inclusion339 decks1.02K decks
9%synergy
Mortuary Mire
26%inclusion266 decks1.02K decks
13%synergy
Cabal Stronghold
25%inclusion257 decks1.02K decks
-9%synergy
Reliquary Tower
22%inclusion227 decks1.02K decks
-8%synergy
Urborg, Tomb of Yawgmoth
21%inclusion215 decks1.02K decks
-16%synergy
Nykthos, Shrine to Nyx
18%inclusion187 decks1.02K decks
-11%synergy
Three Tree City
18%inclusion144 decks815 decks
13%synergy
Access Tunnel
17%inclusion174 decks1.02K decks
14%synergy
Phyrexian Tower
15%inclusion149 decks1.02K decks
-11%synergy
Castle Locthwain
12%inclusion123 decks1.02K decks
-5%synergy
Shizo, Death's Storehouse
11%inclusion115 decks1.02K decks
1%synergy
Crypt of Agadeem
10%inclusion106 decks1.02K decks
-1%synergy
War Room
10%inclusion105 decks1.02K decks
-6%synergy
Secret Tunnel
10%inclusion13 decks133 decks
9%synergy
Barren Moor
10%inclusion98 decks1.02K decks
0%synergy
Temple of the False God
8.3%inclusion84 decks1.02K decks
0%synergy
The Dross Pits
7.2%inclusion73 decks1.02K decks
6%synergy
Takenuma, Abandoned Mire
6.5%inclusion66 decks1.02K decks
-9%synergy
Minas Morgul, Dark Fortress
5.8%inclusion59 decks1.02K decks
3%synergy
Mana Artifacts
Sol Ring
81%inclusion823 decks1.02K decks
-5%synergy
Arcane Signet
53%inclusion538 decks1.02K decks
-9%synergy
Glistening Sphere
40%inclusion403 decks1.02K decks
38%synergy
Patchwork Banner
29%inclusion228 decks798 decks
24%synergy
Charcoal Diamond
24%inclusion240 decks1.02K decks
1%synergy
Mind Stone
19%inclusion193 decks1.02K decks
-10%synergy
Staff of Compleation
16%inclusion159 decks1.02K decks
14%synergy
Heraldic Banner
14%inclusion145 decks1.02K decks
9%synergy
Phyrexian Atlas
12%inclusion123 decks1.02K decks
12%synergy
Thought Vessel
10%inclusion106 decks1.02K decks
-15%synergy
Caged Sun
10%inclusion105 decks1.02K decks
-1%synergy
Commander's Sphere
8.8%inclusion89 decks1.02K decks
0%synergy
The Soul Stone
7.2%inclusion11 decks153 decks
-7%synergy
Throne of Eldraine
5.8%inclusion59 decks1.02K decks
-4%synergy
Gauntlet of Power
5.2%inclusion53 decks1.02K decks
2%synergy
Lands
Swamp
98%inclusion997 decks1.02K decks
3%synergy
Path of Ancestry
37%inclusion378 decks1.02K decks
32%synergy
Myriad Landscape
23%inclusion238 decks1.02K decks
-2%synergy
Cavern of Souls
14%inclusion146 decks1.02K decks
8%synergy
Command Tower
13%inclusion131 decks1.02K decks
7%synergy
Big Apple, 3 a.m.
10%inclusion8 decks83 decks
8%synergy
Malakir Rebirth
10%inclusion98 decks1.02K decks
-13%synergy
Fell the Profane
9.0%inclusion89 decks984 decks
-10%synergy
Escape Tunnel
8.6%inclusion87 decks1.02K decks
8%synergy
Evolving Wilds
8.2%inclusion83 decks1.02K decks
4%synergy
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