Karumonix, the Rat King (Commander) - Core

Karumonix, the Rat King
Rank #381
934decks
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
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Utility Lands
Mana Artifacts
Lands
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Emeritus of Woe
1.8%inclusion1 decks55 decks
-6%synergy
Rabid Attack
1.8%inclusion1 decks55 decks
1%synergy
Decorum Dissertation
1.8%inclusion1 decks57 decks
-3%synergy
End of the Hunt
1.8%inclusion1 decks57 decks
1%synergy
High Synergy Cards
Blightbelly Rat
85%inclusion794 decks934 decks
81%synergy
Piper of the Swarm
83%inclusion772 decks934 decks
76%synergy
Pack Rat
76%inclusion706 decks934 decks
70%synergy
Ichor Rats
71%inclusion666 decks934 decks
68%synergy
Ogre Slumlord
77%inclusion721 decks934 decks
67%synergy
Typhoid Rats
69%inclusion649 decks934 decks
66%synergy
Marrow-Gnawer
68%inclusion631 decks934 decks
64%synergy
Infectious Inquiry
66%inclusion614 decks934 decks
63%synergy
Rancid Rats
64%inclusion597 decks934 decks
61%synergy
Lord Skitter, Sewer King
69%inclusion642 decks934 decks
60%synergy
Top Cards
Vraska's Fall
63%inclusion589 decks934 decks
60%synergy
Lord Skitter's Butcher
63%inclusion587 decks934 decks
60%synergy
Septic Rats
62%inclusion578 decks934 decks
60%synergy
Crypt Rats
60%inclusion560 decks934 decks
55%synergy
Drown in Ichor
60%inclusion556 decks934 decks
56%synergy
Tangled Colony
59%inclusion550 decks934 decks
56%synergy
Burglar Rat
57%inclusion534 decks934 decks
46%synergy
Voracious Vermin
57%inclusion528 decks934 decks
54%synergy
Rat Colony
52%inclusion483 decks934 decks
46%synergy
Dark Ritual
51%inclusion480 decks934 decks
-15%synergy
Creatures
Stronghold Rats
49%inclusion455 decks934 decks
45%synergy
Chittering Skitterling
46%inclusion430 decks934 decks
45%synergy
Persistent Marshstalker
45%inclusion379 decks835 decks
42%synergy
Gnat Miser
45%inclusion422 decks934 decks
42%synergy
Wave of Rats
43%inclusion406 decks934 decks
42%synergy
Pestilence Rats
40%inclusion375 decks934 decks
38%synergy
Ratcatcher
39%inclusion367 decks934 decks
36%synergy
Ruin Rat
37%inclusion341 decks934 decks
35%synergy
Swarm of Rats
36%inclusion340 decks934 decks
34%synergy
Nezumi Prowler
36%inclusion339 decks934 decks
35%synergy
Nezumi Informant
35%inclusion323 decks934 decks
28%synergy
Ravenous Rats
34%inclusion317 decks934 decks
32%synergy
Gnawing Vermin
34%inclusion317 decks934 decks
32%synergy
Chittering Witch
34%inclusion316 decks934 decks
29%synergy
Changeling Outcast
34%inclusion313 decks934 decks
28%synergy
Nezumi Cutthroat
33%inclusion307 decks934 decks
32%synergy
Nashi, Moon Sage's Scion
31%inclusion293 decks934 decks
27%synergy
Ashcoat of the Shadow Swarm
31%inclusion289 decks934 decks
28%synergy
Old Flitterfang
31%inclusion286 decks934 decks
29%synergy
Drainpipe Vermin
30%inclusion279 decks934 decks
29%synergy
Ink-Eyes, Servant of Oni
29%inclusion273 decks934 decks
26%synergy
Razortooth Rats
28%inclusion262 decks934 decks
27%synergy
Twisted Sewer-Witch
28%inclusion259 decks934 decks
26%synergy
Ruthless Radrat
25%inclusion232 decks934 decks
24%synergy
Engine Rat
24%inclusion125 decks521 decks
22%synergy
Rat King, Pale Piper
24%inclusion32 decks136 decks
19%synergy
Mukotai Ambusher
21%inclusion192 decks934 decks
20%synergy
Nezumi Graverobber
20%inclusion190 decks934 decks
19%synergy
Throat Slitter
20%inclusion188 decks934 decks
18%synergy
Innocuous Rat
20%inclusion146 decks736 decks
19%synergy
Rotting Rats
20%inclusion185 decks934 decks
17%synergy
Rat King, Verminister
20%inclusion33 decks167 decks
17%synergy
Locust Miser
19%inclusion179 decks934 decks
18%synergy
Valley Rotcaller
18%inclusion155 decks839 decks
16%synergy
Undercity Dire Rat
18%inclusion72 decks394 decks
16%synergy
Relentless Rats
18%inclusion169 decks934 decks
16%synergy
Sinuous Vermin
18%inclusion164 decks934 decks
17%synergy
Refurbished Familiar
17%inclusion157 decks903 decks
15%synergy
Ayara, First of Locthwain
17%inclusion159 decks934 decks
-9%synergy
Species Specialist
17%inclusion155 decks934 decks
13%synergy
Skullsnatcher
16%inclusion153 decks934 decks
16%synergy
Nezumi Bladeblesser
16%inclusion153 decks934 decks
16%synergy
Daggerfang Duo
14%inclusion114 decks820 decks
13%synergy
Chittering Rats
13%inclusion122 decks934 decks
13%synergy
Bog Rats
13%inclusion118 decks934 decks
12%synergy
Okiba-Gang Shinobi
13%inclusion118 decks934 decks
12%synergy
Gray Merchant of Asphodel
12%inclusion116 decks934 decks
-39%synergy
Adaptive Automaton
12%inclusion116 decks934 decks
11%synergy
Crypt Ghast
12%inclusion108 decks934 decks
-36%synergy
Thornplate Intimidator
11%inclusion89 decks830 decks
10%synergy
Instants
Whisper of the Dross
51%inclusion473 decks934 decks
48%synergy
Village Rites
41%inclusion386 decks934 decks
16%synergy
Defile
40%inclusion370 decks934 decks
3%synergy
Rat Out
31%inclusion293 decks934 decks
30%synergy
Grim Affliction
31%inclusion286 decks934 decks
29%synergy
Go for the Throat
30%inclusion280 decks934 decks
7%synergy
Tainted Strike
21%inclusion196 decks934 decks
18%synergy
Corrupted Conviction
21%inclusion193 decks934 decks
8%synergy
Anoint with Affliction
21%inclusion192 decks934 decks
20%synergy
Murder
20%inclusion191 decks934 decks
10%synergy
Deadly Dispute
19%inclusion177 decks934 decks
-7%synergy
Tragic Slip
17%inclusion158 decks934 decks
-3%synergy
Infernal Grasp
17%inclusion156 decks934 decks
-8%synergy
Foul-Tongue Shriek
15%inclusion139 decks934 decks
13%synergy
Consuming Corruption
15%inclusion134 decks905 decks
-1%synergy
Hero's Downfall
13%inclusion123 decks934 decks
6%synergy
Raise the Draugr
13%inclusion120 decks934 decks
12%synergy
Withering Torment
13%inclusion93 decks739 decks
-19%synergy
Doom Blade
12%inclusion109 decks934 decks
4%synergy
Virulent Wound
11%inclusion106 decks934 decks
11%synergy
Gravepurge
11%inclusion100 decks934 decks
9%synergy
Malakir Rebirth
8.8%inclusion82 decks934 decks
-14%synergy
Fell the Profane
8.6%inclusion79 decks914 decks
-10%synergy
Bitter Triumph
8.5%inclusion79 decks934 decks
-1%synergy
Deadly Rollick
7.4%inclusion69 decks934 decks
-17%synergy
Offer Immortality
7.0%inclusion65 decks934 decks
5%synergy
Not Dead After All
6.9%inclusion64 decks934 decks
-4%synergy
Death Denied
6.9%inclusion64 decks934 decks
6%synergy
Altar's Reap
6.6%inclusion62 decks934 decks
4%synergy
Sheoldred's Edict
6.1%inclusion57 decks934 decks
-9%synergy
Sudden Spoiling
5.7%inclusion53 decks934 decks
-3%synergy
Feign Death
5.5%inclusion51 decks934 decks
-3%synergy
Sorceries
Phyresis Outbreak
44%inclusion415 decks934 decks
43%synergy
Feed the Swarm
40%inclusion371 decks934 decks
-11%synergy
Crippling Fear
38%inclusion358 decks934 decks
35%synergy
Revenge of the Rats
34%inclusion229 decks668 decks
31%synergy
Sign in Blood
32%inclusion302 decks934 decks
-3%synergy
Vat Emergence
31%inclusion289 decks934 decks
30%synergy
Patriarch's Bidding
29%inclusion268 decks934 decks
24%synergy
Kindred Dominance
25%inclusion230 decks934 decks
20%synergy
Spread the Sickness
21%inclusion194 decks934 decks
20%synergy
Swarmyard Massacre
19%inclusion154 decks820 decks
16%synergy
Read the Bones
18%inclusion165 decks934 decks
1%synergy
Bloodline Bidding
17%inclusion31 decks178 decks
13%synergy
Feed the Infection
16%inclusion152 decks934 decks
16%synergy
Night's Whisper
16%inclusion148 decks934 decks
-9%synergy
Unearth
14%inclusion127 decks934 decks
5%synergy
Gruesome Fate
13%inclusion118 decks934 decks
11%synergy
Diabolic Tutor
13%inclusion117 decks934 decks
-2%synergy
Echoing Return
12%inclusion116 decks934 decks
9%synergy
Geth's Summons
12%inclusion108 decks934 decks
11%synergy
Plague of Vermin
11%inclusion104 decks934 decks
9%synergy
Lab Rats
11%inclusion100 decks934 decks
10%synergy
Mutilate
10%inclusion92 decks934 decks
-7%synergy
Return from Extinction
10%inclusion91 decks934 decks
9%synergy
Victimize
10%inclusion91 decks934 decks
-17%synergy
Caress of Phyrexia
8.9%inclusion83 decks934 decks
8%synergy
Toxic Deluge
8.7%inclusion81 decks934 decks
-28%synergy
Pact of the Serpent
8.0%inclusion75 decks934 decks
6%synergy
Forever Young
7.3%inclusion68 decks934 decks
6%synergy
Damnation
7.0%inclusion65 decks934 decks
-13%synergy
Haunting Voyage
6.7%inclusion63 decks934 decks
6%synergy
Fell
6.6%inclusion55 decks839 decks
3%synergy
Reanimate
5.4%inclusion50 decks934 decks
-34%synergy
Syphon Mind
5.4%inclusion50 decks934 decks
-7%synergy
Eaten Alive
5.2%inclusion49 decks934 decks
2%synergy
Diabolic Intent
5.1%inclusion48 decks934 decks
-10%synergy
Utility Artifacts
Bontu's Monument
50%inclusion463 decks934 decks
21%synergy
Jet Medallion
44%inclusion408 decks934 decks
-18%synergy
Herald's Horn
42%inclusion392 decks934 decks
36%synergy
Contagion Clasp
32%inclusion296 decks934 decks
29%synergy
Vanquisher's Banner
30%inclusion279 decks934 decks
26%synergy
Skullclamp
29%inclusion270 decks934 decks
7%synergy
Swiftfoot Boots
19%inclusion179 decks934 decks
-12%synergy
Thrumming Stone
15%inclusion144 decks934 decks
11%synergy
Contagion Engine
14%inclusion131 decks934 decks
12%synergy
Icon of Ancestry
14%inclusion129 decks934 decks
13%synergy
Chronicle of Victory
13%inclusion24 decks179 decks
10%synergy
Lightning Greaves
13%inclusion118 decks934 decks
-21%synergy
Coat of Arms
12%inclusion112 decks934 decks
9%synergy
Prosthetic Injector
11%inclusion107 decks934 decks
11%synergy
Door of Destinies
11%inclusion106 decks934 decks
9%synergy
Banner of Kinship
11%inclusion73 decks670 decks
9%synergy
Whip of Erebos
10%inclusion95 decks934 decks
-1%synergy
Grafted Exoskeleton
10%inclusion92 decks934 decks
9%synergy
Wayfarer's Bauble
7.3%inclusion68 decks934 decks
-8%synergy
Eldrazi Monument
7.0%inclusion65 decks934 decks
5%synergy
The Darkness Crystal
6.0%inclusion24 decks401 decks
-14%synergy
Vat of Rebirth
5.7%inclusion53 decks934 decks
2%synergy
Hall of Triumph
5.7%inclusion53 decks934 decks
5%synergy
Gathering Stone
5.1%inclusion9 decks178 decks
4%synergy
Enchantments
Necrogen Communion
43%inclusion399 decks934 decks
41%synergy
Phyrexian Arena
35%inclusion328 decks934 decks
-5%synergy
Cover of Darkness
27%inclusion249 decks934 decks
24%synergy
Bad Moon
24%inclusion223 decks934 decks
21%synergy
Phyresis
21%inclusion198 decks934 decks
19%synergy
Haunted One
20%inclusion190 decks934 decks
18%synergy
Oversold Cemetery
18%inclusion170 decks934 decks
13%synergy
Tribute to Horobi
17%inclusion159 decks934 decks
16%synergy
Black Market
13%inclusion117 decks934 decks
-8%synergy
Grave Pact
11%inclusion106 decks934 decks
-8%synergy
Black Market Connections
10%inclusion97 decks934 decks
-14%synergy
Vampiric Rites
10%inclusion90 decks934 decks
4%synergy
Lord Skitter's Blessing
8.8%inclusion82 decks934 decks
8%synergy
Intimidation
8.5%inclusion79 decks934 decks
8%synergy
Dictate of Erebos
6.2%inclusion58 decks934 decks
-5%synergy
Planeswalkers
Vraska, Betrayal's Sting
25%inclusion230 decks934 decks
22%synergy
Liliana of the Dark Realms
8.0%inclusion75 decks934 decks
-6%synergy
Utility Lands
Swarmyard
49%inclusion453 decks934 decks
43%synergy
Karn's Bastion
42%inclusion392 decks934 decks
38%synergy
Rogue's Passage
40%inclusion377 decks934 decks
21%synergy
Bojuka Bog
40%inclusion370 decks934 decks
-7%synergy
Mudflat Village
37%inclusion310 decks847 decks
34%synergy
Cabal Coffers
28%inclusion265 decks934 decks
-26%synergy
Witch's Cottage
26%inclusion245 decks934 decks
2%synergy
Mortuary Mire
24%inclusion222 decks934 decks
11%synergy
Cabal Stronghold
20%inclusion191 decks934 decks
-14%synergy
Reliquary Tower
18%inclusion172 decks934 decks
-12%synergy
Access Tunnel
17%inclusion162 decks934 decks
14%synergy
Three Tree City
17%inclusion139 decks839 decks
12%synergy
Urborg, Tomb of Yawgmoth
14%inclusion129 decks934 decks
-24%synergy
Nykthos, Shrine to Nyx
12%inclusion113 decks934 decks
-18%synergy
Castle Locthwain
11%inclusion100 decks934 decks
-6%synergy
Barren Moor
10%inclusion96 decks934 decks
1%synergy
Secret Tunnel
8.2%inclusion20 decks243 decks
7%synergy
War Room
8.1%inclusion76 decks934 decks
-8%synergy
Phyrexian Tower
7.7%inclusion72 decks934 decks
-18%synergy
Crypt of Agadeem
7.3%inclusion68 decks934 decks
-4%synergy
The Dross Pits
6.5%inclusion61 decks934 decks
5%synergy
Temple of the False God
6.5%inclusion61 decks934 decks
-1%synergy
Shizo, Death's Storehouse
5.9%inclusion55 decks934 decks
-4%synergy
Memorial to Folly
5.6%inclusion52 decks934 decks
2%synergy
Mana Artifacts
Sol Ring
75%inclusion697 decks934 decks
-11%synergy
Arcane Signet
47%inclusion443 decks934 decks
-14%synergy
Glistening Sphere
35%inclusion324 decks934 decks
34%synergy
Charcoal Diamond
26%inclusion245 decks934 decks
4%synergy
Patchwork Banner
24%inclusion201 decks830 decks
20%synergy
Heraldic Banner
19%inclusion173 decks934 decks
13%synergy
Mind Stone
18%inclusion168 decks934 decks
-11%synergy
Staff of Compleation
16%inclusion147 decks934 decks
14%synergy
Phyrexian Atlas
14%inclusion134 decks934 decks
14%synergy
Caged Sun
10%inclusion93 decks934 decks
-1%synergy
Thought Vessel
8.9%inclusion83 decks934 decks
-17%synergy
Commander's Sphere
7.9%inclusion74 decks934 decks
0%synergy
Gauntlet of Power
5.1%inclusion48 decks934 decks
2%synergy
Lands
Swamp
99%inclusion923 decks934 decks
4%synergy
Path of Ancestry
36%inclusion340 decks934 decks
31%synergy
Myriad Landscape
19%inclusion180 decks934 decks
-6%synergy
Big Apple, 3 a.m.
10%inclusion14 decks136 decks
8%synergy
Malakir Rebirth
8.8%inclusion82 decks934 decks
-14%synergy
Fell the Profane
8.6%inclusion79 decks914 decks
-10%synergy
Command Tower
8.4%inclusion78 decks934 decks
3%synergy
Cavern of Souls
8.4%inclusion78 decks934 decks
2%synergy
Escape Tunnel
7.9%inclusion74 decks934 decks
7%synergy
Evolving Wilds
5.8%inclusion54 decks934 decks
2%synergy
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