Karumonix, the Rat King (Commander) - Core

Karumonix, the Rat King
Rank #381
932decks
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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Rabid Attack
1.9%inclusion1 decks52 decks
1%synergy
Emeritus of Woe
1.9%inclusion1 decks52 decks
-6%synergy
End of the Hunt
1.9%inclusion1 decks54 decks
2%synergy
Decorum Dissertation
1.9%inclusion1 decks54 decks
-3%synergy
High Synergy Cards
Blightbelly Rat
85%inclusion793 decks932 decks
82%synergy
Piper of the Swarm
83%inclusion771 decks932 decks
76%synergy
Pack Rat
76%inclusion706 decks932 decks
70%synergy
Ichor Rats
71%inclusion665 decks932 decks
68%synergy
Ogre Slumlord
77%inclusion720 decks932 decks
67%synergy
Typhoid Rats
70%inclusion648 decks932 decks
66%synergy
Marrow-Gnawer
68%inclusion631 decks932 decks
64%synergy
Infectious Inquiry
66%inclusion613 decks932 decks
63%synergy
Rancid Rats
64%inclusion596 decks932 decks
61%synergy
Lord Skitter, Sewer King
69%inclusion642 decks932 decks
61%synergy
Top Cards
Vraska's Fall
63%inclusion589 decks932 decks
60%synergy
Lord Skitter's Butcher
63%inclusion587 decks932 decks
60%synergy
Septic Rats
62%inclusion578 decks932 decks
60%synergy
Crypt Rats
60%inclusion559 decks932 decks
55%synergy
Drown in Ichor
60%inclusion555 decks932 decks
56%synergy
Tangled Colony
59%inclusion549 decks932 decks
56%synergy
Burglar Rat
57%inclusion533 decks932 decks
46%synergy
Voracious Vermin
57%inclusion527 decks932 decks
54%synergy
Rat Colony
52%inclusion483 decks932 decks
46%synergy
Dark Ritual
52%inclusion480 decks932 decks
-15%synergy
Creatures
Stronghold Rats
49%inclusion454 decks932 decks
45%synergy
Chittering Skitterling
46%inclusion430 decks932 decks
45%synergy
Persistent Marshstalker
45%inclusion379 decks833 decks
43%synergy
Gnat Miser
45%inclusion421 decks932 decks
42%synergy
Wave of Rats
43%inclusion405 decks932 decks
42%synergy
Pestilence Rats
40%inclusion374 decks932 decks
38%synergy
Ratcatcher
39%inclusion366 decks932 decks
36%synergy
Ruin Rat
36%inclusion340 decks932 decks
35%synergy
Swarm of Rats
36%inclusion339 decks932 decks
34%synergy
Nezumi Prowler
36%inclusion339 decks932 decks
35%synergy
Nezumi Informant
35%inclusion323 decks932 decks
28%synergy
Gnawing Vermin
34%inclusion317 decks932 decks
32%synergy
Ravenous Rats
34%inclusion316 decks932 decks
32%synergy
Chittering Witch
34%inclusion316 decks932 decks
29%synergy
Changeling Outcast
34%inclusion313 decks932 decks
28%synergy
Nezumi Cutthroat
33%inclusion307 decks932 decks
32%synergy
Nashi, Moon Sage's Scion
31%inclusion293 decks932 decks
28%synergy
Ashcoat of the Shadow Swarm
31%inclusion289 decks932 decks
28%synergy
Old Flitterfang
31%inclusion285 decks932 decks
29%synergy
Drainpipe Vermin
30%inclusion278 decks932 decks
28%synergy
Ink-Eyes, Servant of Oni
29%inclusion273 decks932 decks
26%synergy
Razortooth Rats
28%inclusion261 decks932 decks
27%synergy
Twisted Sewer-Witch
28%inclusion258 decks932 decks
26%synergy
Ruthless Radrat
25%inclusion232 decks932 decks
24%synergy
Engine Rat
24%inclusion125 decks519 decks
22%synergy
Rat King, Pale Piper
23%inclusion31 decks133 decks
19%synergy
Mukotai Ambusher
21%inclusion192 decks932 decks
20%synergy
Nezumi Graverobber
20%inclusion190 decks932 decks
19%synergy
Throat Slitter
20%inclusion188 decks932 decks
18%synergy
Rat King, Verminister
20%inclusion33 decks165 decks
17%synergy
Innocuous Rat
20%inclusion145 decks734 decks
19%synergy
Rotting Rats
20%inclusion184 decks932 decks
17%synergy
Locust Miser
19%inclusion179 decks932 decks
18%synergy
Valley Rotcaller
19%inclusion155 decks837 decks
16%synergy
Undercity Dire Rat
18%inclusion72 decks392 decks
17%synergy
Relentless Rats
18%inclusion168 decks932 decks
16%synergy
Sinuous Vermin
18%inclusion164 decks932 decks
17%synergy
Refurbished Familiar
17%inclusion157 decks901 decks
15%synergy
Ayara, First of Locthwain
17%inclusion159 decks932 decks
-9%synergy
Species Specialist
17%inclusion155 decks932 decks
13%synergy
Nezumi Bladeblesser
16%inclusion153 decks932 decks
16%synergy
Skullsnatcher
16%inclusion152 decks932 decks
16%synergy
Daggerfang Duo
14%inclusion114 decks818 decks
13%synergy
Chittering Rats
13%inclusion121 decks932 decks
12%synergy
Bog Rats
13%inclusion118 decks932 decks
12%synergy
Okiba-Gang Shinobi
13%inclusion118 decks932 decks
12%synergy
Gray Merchant of Asphodel
12%inclusion116 decks932 decks
-39%synergy
Adaptive Automaton
12%inclusion116 decks932 decks
11%synergy
Crypt Ghast
12%inclusion108 decks932 decks
-36%synergy
Thornplate Intimidator
11%inclusion89 decks828 decks
10%synergy
Instants
Whisper of the Dross
51%inclusion473 decks932 decks
48%synergy
Village Rites
41%inclusion386 decks932 decks
16%synergy
Defile
40%inclusion370 decks932 decks
3%synergy
Rat Out
31%inclusion292 decks932 decks
30%synergy
Grim Affliction
31%inclusion285 decks932 decks
29%synergy
Go for the Throat
30%inclusion280 decks932 decks
7%synergy
Tainted Strike
21%inclusion196 decks932 decks
18%synergy
Anoint with Affliction
21%inclusion192 decks932 decks
20%synergy
Corrupted Conviction
21%inclusion192 decks932 decks
8%synergy
Murder
20%inclusion191 decks932 decks
10%synergy
Deadly Dispute
19%inclusion176 decks932 decks
-7%synergy
Tragic Slip
17%inclusion158 decks932 decks
-3%synergy
Infernal Grasp
17%inclusion156 decks932 decks
-8%synergy
Foul-Tongue Shriek
15%inclusion139 decks932 decks
13%synergy
Consuming Corruption
15%inclusion134 decks903 decks
-1%synergy
Hero's Downfall
13%inclusion123 decks932 decks
6%synergy
Raise the Draugr
13%inclusion120 decks932 decks
12%synergy
Withering Torment
12%inclusion92 decks737 decks
-19%synergy
Doom Blade
12%inclusion109 decks932 decks
4%synergy
Virulent Wound
11%inclusion105 decks932 decks
11%synergy
Gravepurge
11%inclusion100 decks932 decks
9%synergy
Malakir Rebirth
8.8%inclusion82 decks932 decks
-14%synergy
Fell the Profane
8.7%inclusion79 decks912 decks
-10%synergy
Bitter Triumph
8.5%inclusion79 decks932 decks
-1%synergy
Deadly Rollick
7.4%inclusion69 decks932 decks
-17%synergy
Offer Immortality
7.0%inclusion65 decks932 decks
5%synergy
Not Dead After All
6.8%inclusion63 decks932 decks
-5%synergy
Death Denied
6.8%inclusion63 decks932 decks
6%synergy
Altar's Reap
6.7%inclusion62 decks932 decks
4%synergy
Sheoldred's Edict
6.1%inclusion57 decks932 decks
-9%synergy
Sudden Spoiling
5.7%inclusion53 decks932 decks
-3%synergy
Feign Death
5.5%inclusion51 decks932 decks
-3%synergy
Sorceries
Phyresis Outbreak
45%inclusion415 decks932 decks
43%synergy
Feed the Swarm
40%inclusion371 decks932 decks
-11%synergy
Crippling Fear
38%inclusion358 decks932 decks
35%synergy
Revenge of the Rats
34%inclusion229 decks666 decks
31%synergy
Sign in Blood
32%inclusion302 decks932 decks
-3%synergy
Vat Emergence
31%inclusion289 decks932 decks
30%synergy
Patriarch's Bidding
29%inclusion268 decks932 decks
25%synergy
Kindred Dominance
25%inclusion230 decks932 decks
20%synergy
Spread the Sickness
21%inclusion193 decks932 decks
20%synergy
Swarmyard Massacre
19%inclusion154 decks818 decks
16%synergy
Read the Bones
18%inclusion165 decks932 decks
1%synergy
Bloodline Bidding
18%inclusion31 decks176 decks
13%synergy
Feed the Infection
16%inclusion152 decks932 decks
16%synergy
Night's Whisper
16%inclusion148 decks932 decks
-9%synergy
Unearth
14%inclusion127 decks932 decks
5%synergy
Gruesome Fate
13%inclusion118 decks932 decks
11%synergy
Diabolic Tutor
13%inclusion117 decks932 decks
-2%synergy
Echoing Return
12%inclusion116 decks932 decks
9%synergy
Geth's Summons
12%inclusion108 decks932 decks
11%synergy
Plague of Vermin
11%inclusion104 decks932 decks
9%synergy
Lab Rats
11%inclusion99 decks932 decks
10%synergy
Mutilate
10%inclusion92 decks932 decks
-7%synergy
Victimize
10%inclusion91 decks932 decks
-17%synergy
Return from Extinction
10%inclusion91 decks932 decks
9%synergy
Caress of Phyrexia
8.8%inclusion82 decks932 decks
8%synergy
Toxic Deluge
8.7%inclusion81 decks932 decks
-28%synergy
Pact of the Serpent
8.0%inclusion75 decks932 decks
6%synergy
Forever Young
7.3%inclusion68 decks932 decks
6%synergy
Damnation
7.0%inclusion65 decks932 decks
-13%synergy
Haunting Voyage
6.8%inclusion63 decks932 decks
6%synergy
Fell
6.6%inclusion55 decks837 decks
3%synergy
Reanimate
5.4%inclusion50 decks932 decks
-34%synergy
Syphon Mind
5.4%inclusion50 decks932 decks
-7%synergy
Diabolic Intent
5.2%inclusion48 decks932 decks
-10%synergy
Eaten Alive
5.0%inclusion47 decks932 decks
2%synergy
Utility Artifacts
Bontu's Monument
50%inclusion463 decks932 decks
21%synergy
Jet Medallion
44%inclusion408 decks932 decks
-18%synergy
Herald's Horn
42%inclusion392 decks932 decks
36%synergy
Contagion Clasp
32%inclusion296 decks932 decks
29%synergy
Vanquisher's Banner
30%inclusion279 decks932 decks
26%synergy
Skullclamp
29%inclusion270 decks932 decks
7%synergy
Swiftfoot Boots
19%inclusion179 decks932 decks
-12%synergy
Thrumming Stone
15%inclusion143 decks932 decks
11%synergy
Contagion Engine
14%inclusion131 decks932 decks
12%synergy
Icon of Ancestry
14%inclusion129 decks932 decks
13%synergy
Chronicle of Victory
14%inclusion24 decks177 decks
11%synergy
Lightning Greaves
13%inclusion118 decks932 decks
-21%synergy
Coat of Arms
12%inclusion112 decks932 decks
9%synergy
Prosthetic Injector
11%inclusion107 decks932 decks
11%synergy
Door of Destinies
11%inclusion106 decks932 decks
9%synergy
Banner of Kinship
11%inclusion73 decks668 decks
9%synergy
Whip of Erebos
10%inclusion95 decks932 decks
-1%synergy
Grafted Exoskeleton
10%inclusion92 decks932 decks
9%synergy
Wayfarer's Bauble
7.3%inclusion68 decks932 decks
-8%synergy
Eldrazi Monument
7.1%inclusion66 decks932 decks
5%synergy
The Darkness Crystal
6.0%inclusion24 decks399 decks
-14%synergy
Vat of Rebirth
5.7%inclusion53 decks932 decks
2%synergy
Hall of Triumph
5.7%inclusion53 decks932 decks
5%synergy
Gathering Stone
5.1%inclusion9 decks176 decks
4%synergy
Enchantments
Necrogen Communion
43%inclusion398 decks932 decks
41%synergy
Phyrexian Arena
35%inclusion328 decks932 decks
-4%synergy
Cover of Darkness
27%inclusion249 decks932 decks
24%synergy
Bad Moon
24%inclusion222 decks932 decks
21%synergy
Phyresis
21%inclusion197 decks932 decks
19%synergy
Haunted One
20%inclusion190 decks932 decks
18%synergy
Oversold Cemetery
18%inclusion169 decks932 decks
13%synergy
Tribute to Horobi
17%inclusion158 decks932 decks
16%synergy
Black Market
13%inclusion117 decks932 decks
-8%synergy
Grave Pact
11%inclusion106 decks932 decks
-8%synergy
Black Market Connections
10%inclusion97 decks932 decks
-14%synergy
Vampiric Rites
10%inclusion90 decks932 decks
4%synergy
Lord Skitter's Blessing
8.8%inclusion82 decks932 decks
8%synergy
Intimidation
8.4%inclusion78 decks932 decks
8%synergy
Dictate of Erebos
6.2%inclusion58 decks932 decks
-5%synergy
Planeswalkers
Vraska, Betrayal's Sting
25%inclusion230 decks932 decks
22%synergy
Liliana of the Dark Realms
8.0%inclusion75 decks932 decks
-6%synergy
Utility Lands
Swarmyard
49%inclusion453 decks932 decks
43%synergy
Karn's Bastion
42%inclusion392 decks932 decks
38%synergy
Rogue's Passage
40%inclusion377 decks932 decks
21%synergy
Bojuka Bog
40%inclusion369 decks932 decks
-7%synergy
Mudflat Village
37%inclusion310 decks845 decks
34%synergy
Cabal Coffers
28%inclusion265 decks932 decks
-26%synergy
Witch's Cottage
26%inclusion244 decks932 decks
2%synergy
Mortuary Mire
24%inclusion221 decks932 decks
11%synergy
Cabal Stronghold
20%inclusion191 decks932 decks
-14%synergy
Reliquary Tower
18%inclusion172 decks932 decks
-12%synergy
Access Tunnel
17%inclusion162 decks932 decks
14%synergy
Three Tree City
16%inclusion138 decks837 decks
12%synergy
Urborg, Tomb of Yawgmoth
14%inclusion129 decks932 decks
-24%synergy
Nykthos, Shrine to Nyx
12%inclusion113 decks932 decks
-18%synergy
Castle Locthwain
11%inclusion100 decks932 decks
-6%synergy
Barren Moor
10%inclusion95 decks932 decks
0%synergy
Secret Tunnel
8.3%inclusion20 decks241 decks
7%synergy
War Room
8.2%inclusion76 decks932 decks
-8%synergy
Phyrexian Tower
7.7%inclusion72 decks932 decks
-18%synergy
Crypt of Agadeem
7.3%inclusion68 decks932 decks
-4%synergy
Temple of the False God
6.5%inclusion61 decks932 decks
-1%synergy
The Dross Pits
6.4%inclusion60 decks932 decks
5%synergy
Shizo, Death's Storehouse
5.9%inclusion55 decks932 decks
-4%synergy
Memorial to Folly
5.6%inclusion52 decks932 decks
2%synergy
Mana Artifacts
Sol Ring
75%inclusion696 decks932 decks
-11%synergy
Arcane Signet
47%inclusion442 decks932 decks
-14%synergy
Glistening Sphere
35%inclusion324 decks932 decks
34%synergy
Charcoal Diamond
26%inclusion244 decks932 decks
4%synergy
Patchwork Banner
24%inclusion201 decks828 decks
20%synergy
Heraldic Banner
19%inclusion173 decks932 decks
13%synergy
Mind Stone
18%inclusion167 decks932 decks
-11%synergy
Staff of Compleation
16%inclusion147 decks932 decks
14%synergy
Phyrexian Atlas
14%inclusion133 decks932 decks
14%synergy
Caged Sun
10%inclusion93 decks932 decks
-1%synergy
Thought Vessel
8.9%inclusion83 decks932 decks
-17%synergy
Commander's Sphere
7.8%inclusion73 decks932 decks
-1%synergy
Gauntlet of Power
5.2%inclusion48 decks932 decks
2%synergy
Lands
Swamp
99%inclusion921 decks932 decks
4%synergy
Path of Ancestry
36%inclusion340 decks932 decks
31%synergy
Myriad Landscape
19%inclusion180 decks932 decks
-6%synergy
Big Apple, 3 a.m.
11%inclusion14 decks133 decks
9%synergy
Malakir Rebirth
8.8%inclusion82 decks932 decks
-14%synergy
Fell the Profane
8.7%inclusion79 decks912 decks
-10%synergy
Command Tower
8.4%inclusion78 decks932 decks
3%synergy
Cavern of Souls
8.4%inclusion78 decks932 decks
2%synergy
Escape Tunnel
7.8%inclusion73 decks932 decks
7%synergy
Evolving Wilds
5.8%inclusion54 decks932 decks
2%synergy
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