Karumonix, the Rat King (Commander) - Core

Karumonix, the Rat King
Rank #412
805decks
As CommanderAs CardAverage DeckDecks
Bracket
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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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Utility Lands
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Hall of Echoes
8.3%inclusion1 decks12 decks
8%synergy
Orcrist, Goblin-cleaver
2.5%inclusion2 decks79 decks
2%synergy
Bilbo's Deadly Slice
1.4%inclusion1 decks71 decks
1%synergy
Stir Up Trouble
1.4%inclusion1 decks71 decks
1%synergy
My Precious
1.2%inclusion2 decks162 decks
-2%synergy
High Synergy Cards
Blightbelly Rat
85%inclusion681 decks805 decks
81%synergy
Piper of the Swarm
83%inclusion666 decks805 decks
76%synergy
Ichor Rats
72%inclusion577 decks805 decks
69%synergy
Pack Rat
74%inclusion597 decks805 decks
68%synergy
Ogre Slumlord
77%inclusion620 decks805 decks
68%synergy
Marrow-Gnawer
70%inclusion567 decks805 decks
67%synergy
Typhoid Rats
69%inclusion555 decks805 decks
65%synergy
Infectious Inquiry
67%inclusion537 decks805 decks
64%synergy
Lord Skitter, Sewer King
69%inclusion554 decks805 decks
61%synergy
Vraska's Fall
64%inclusion514 decks805 decks
61%synergy
Top Cards
Rancid Rats
63%inclusion506 decks805 decks
61%synergy
Septic Rats
62%inclusion500 decks805 decks
60%synergy
Lord Skitter's Butcher
61%inclusion491 decks805 decks
58%synergy
Drown in Ichor
60%inclusion486 decks805 decks
57%synergy
Crypt Rats
58%inclusion463 decks805 decks
53%synergy
Tangled Colony
57%inclusion460 decks805 decks
54%synergy
Burglar Rat
57%inclusion459 decks805 decks
47%synergy
Voracious Vermin
55%inclusion445 decks805 decks
53%synergy
Dark Ritual
51%inclusion413 decks805 decks
-16%synergy
Whisper of the Dross
50%inclusion404 decks805 decks
48%synergy
Creatures
Rat Colony
50%inclusion401 decks805 decks
44%synergy
Persistent Marshstalker
49%inclusion395 decks805 decks
46%synergy
Stronghold Rats
48%inclusion389 decks805 decks
45%synergy
Chittering Skitterling
45%inclusion359 decks805 decks
44%synergy
Gnat Miser
43%inclusion347 decks805 decks
40%synergy
Wave of Rats
40%inclusion324 decks805 decks
39%synergy
Ratcatcher
39%inclusion312 decks805 decks
36%synergy
Pestilence Rats
39%inclusion312 decks805 decks
37%synergy
Ruin Rat
35%inclusion284 decks805 decks
34%synergy
Nezumi Prowler
35%inclusion281 decks805 decks
34%synergy
Swarm of Rats
34%inclusion277 decks805 decks
32%synergy
Changeling Outcast
34%inclusion270 decks805 decks
29%synergy
Rat King, Pale Piper
33%inclusion82 decks245 decks
30%synergy
Chittering Witch
33%inclusion268 decks805 decks
29%synergy
Ashcoat of the Shadow Swarm
33%inclusion267 decks805 decks
30%synergy
Ravenous Rats
32%inclusion257 decks805 decks
30%synergy
Nezumi Informant
32%inclusion256 decks805 decks
26%synergy
Gnawing Vermin
31%inclusion252 decks805 decks
30%synergy
Rat King, Verminister
31%inclusion85 decks273 decks
28%synergy
Nezumi Cutthroat
31%inclusion250 decks805 decks
30%synergy
Ink-Eyes, Servant of Oni
29%inclusion236 decks805 decks
26%synergy
Drainpipe Vermin
29%inclusion230 decks805 decks
27%synergy
Nashi, Moon Sage's Scion
28%inclusion229 decks805 decks
25%synergy
Razortooth Rats
27%inclusion215 decks805 decks
26%synergy
Old Flitterfang
26%inclusion212 decks805 decks
25%synergy
Twisted Sewer-Witch
26%inclusion209 decks805 decks
25%synergy
Engine Rat
25%inclusion155 decks615 decks
23%synergy
Ruthless Radrat
23%inclusion186 decks805 decks
22%synergy
Undercity Dire Rat
21%inclusion102 decks489 decks
19%synergy
Valley Rotcaller
20%inclusion159 decks805 decks
17%synergy
Innocuous Rat
20%inclusion158 decks805 decks
19%synergy
Nezumi Graverobber
19%inclusion156 decks805 decks
18%synergy
Rotting Rats
19%inclusion152 decks805 decks
16%synergy
Mukotai Ambusher
19%inclusion152 decks805 decks
18%synergy
Throat Slitter
19%inclusion150 decks805 decks
17%synergy
Ayara, First of Locthwain
18%inclusion142 decks805 decks
-8%synergy
Locust Miser
18%inclusion142 decks805 decks
16%synergy
Relentless Rats
18%inclusion141 decks805 decks
16%synergy
Sinuous Vermin
17%inclusion137 decks805 decks
17%synergy
Nezumi Bladeblesser
17%inclusion133 decks805 decks
16%synergy
Refurbished Familiar
16%inclusion132 decks805 decks
14%synergy
Skullsnatcher
16%inclusion128 decks805 decks
15%synergy
Species Specialist
16%inclusion126 decks805 decks
12%synergy
Daggerfang Duo
15%inclusion118 decks805 decks
14%synergy
Chittering Rats
13%inclusion107 decks805 decks
13%synergy
Gray Merchant of Asphodel
13%inclusion101 decks805 decks
-38%synergy
Okiba-Gang Shinobi
12%inclusion95 decks805 decks
11%synergy
Bog Rats
11%inclusion92 decks805 decks
11%synergy
Adaptive Automaton
11%inclusion91 decks805 decks
10%synergy
Crypt Ghast
11%inclusion90 decks805 decks
-36%synergy
Instants
Village Rites
39%inclusion317 decks805 decks
14%synergy
Defile
38%inclusion306 decks805 decks
3%synergy
Grim Affliction
31%inclusion246 decks805 decks
29%synergy
Rat Out
29%inclusion234 decks805 decks
28%synergy
Go for the Throat
28%inclusion228 decks805 decks
6%synergy
Tainted Strike
21%inclusion171 decks805 decks
18%synergy
Deadly Dispute
21%inclusion166 decks805 decks
-7%synergy
Corrupted Conviction
20%inclusion163 decks805 decks
8%synergy
Anoint with Affliction
20%inclusion158 decks805 decks
19%synergy
Murder
18%inclusion147 decks805 decks
9%synergy
Infernal Grasp
18%inclusion144 decks805 decks
-7%synergy
Tragic Slip
17%inclusion134 decks805 decks
-2%synergy
Consuming Corruption
15%inclusion119 decks805 decks
-0%synergy
Raise the Draugr
13%inclusion101 decks805 decks
12%synergy
Hero's Downfall
12%inclusion99 decks805 decks
6%synergy
Foul-Tongue Shriek
12%inclusion98 decks805 decks
11%synergy
Withering Torment
12%inclusion98 decks805 decks
-20%synergy
Virulent Wound
11%inclusion91 decks805 decks
11%synergy
Doom Blade
11%inclusion90 decks805 decks
4%synergy
Gravepurge
10%inclusion78 decks805 decks
8%synergy
Malakir Rebirth
9.3%inclusion75 decks805 decks
-15%synergy
Fell the Profane
9.2%inclusion74 decks805 decks
-11%synergy
Deadly Rollick
8.2%inclusion66 decks805 decks
-18%synergy
Altar's Reap
7.2%inclusion58 decks805 decks
5%synergy
Offer Immortality
7.1%inclusion57 decks805 decks
5%synergy
Bitter Triumph
6.7%inclusion54 decks805 decks
-3%synergy
Death Denied
6.7%inclusion54 decks805 decks
6%synergy
Not Dead After All
6.6%inclusion53 decks805 decks
-5%synergy
Feign Death
6.3%inclusion51 decks805 decks
-2%synergy
Sheoldred's Edict
5.7%inclusion46 decks805 decks
-9%synergy
Undying Malice
5.5%inclusion44 decks805 decks
-5%synergy
Sorceries
Phyresis Outbreak
42%inclusion341 decks805 decks
41%synergy
Feed the Swarm
39%inclusion316 decks805 decks
-11%synergy
Crippling Fear
37%inclusion300 decks805 decks
35%synergy
Revenge of the Rats
35%inclusion263 decks761 decks
31%synergy
Sign in Blood
32%inclusion261 decks805 decks
-2%synergy
Vat Emergence
30%inclusion243 decks805 decks
29%synergy
Patriarch's Bidding
27%inclusion217 decks805 decks
23%synergy
Kindred Dominance
25%inclusion199 decks805 decks
20%synergy
Spread the Sickness
20%inclusion164 decks805 decks
20%synergy
Swarmyard Massacre
20%inclusion163 decks805 decks
18%synergy
Bloodline Bidding
20%inclusion55 decks282 decks
16%synergy
Read the Bones
18%inclusion143 decks805 decks
2%synergy
Feed the Infection
16%inclusion132 decks805 decks
16%synergy
Night's Whisper
16%inclusion125 decks805 decks
-10%synergy
Unearth
13%inclusion103 decks805 decks
4%synergy
Diabolic Tutor
12%inclusion99 decks805 decks
-1%synergy
Victimize
12%inclusion97 decks805 decks
-16%synergy
Gruesome Fate
11%inclusion89 decks805 decks
9%synergy
Plague of Vermin
11%inclusion87 decks805 decks
8%synergy
Echoing Return
10%inclusion84 decks805 decks
8%synergy
Geth's Summons
10%inclusion82 decks805 decks
10%synergy
Caress of Phyrexia
10%inclusion80 decks805 decks
9%synergy
Mutilate
9.2%inclusion74 decks805 decks
-6%synergy
Lab Rats
9.1%inclusion73 decks805 decks
9%synergy
Toxic Deluge
8.7%inclusion70 decks805 decks
-28%synergy
Return from Extinction
8.3%inclusion67 decks805 decks
8%synergy
Forever Young
7.3%inclusion59 decks805 decks
6%synergy
Pact of the Serpent
7.3%inclusion59 decks805 decks
6%synergy
Fell
6.7%inclusion54 decks805 decks
3%synergy
Damnation
6.5%inclusion52 decks805 decks
-14%synergy
Reanimate
6.3%inclusion51 decks805 decks
-35%synergy
Haunting Voyage
5.5%inclusion44 decks805 decks
4%synergy
Syphon Mind
5.3%inclusion43 decks805 decks
-7%synergy
Diabolic Intent
5.2%inclusion42 decks805 decks
-10%synergy
Utility Artifacts
Bontu's Monument
47%inclusion381 decks805 decks
19%synergy
Jet Medallion
45%inclusion360 decks805 decks
-17%synergy
Herald's Horn
41%inclusion333 decks805 decks
36%synergy
Contagion Clasp
30%inclusion245 decks805 decks
28%synergy
Skullclamp
29%inclusion232 decks805 decks
6%synergy
Vanquisher's Banner
29%inclusion231 decks805 decks
25%synergy
Swiftfoot Boots
20%inclusion162 decks805 decks
-11%synergy
Thrumming Stone
15%inclusion119 decks805 decks
11%synergy
Contagion Engine
15%inclusion118 decks805 decks
13%synergy
Icon of Ancestry
13%inclusion108 decks805 decks
13%synergy
Lightning Greaves
13%inclusion105 decks805 decks
-21%synergy
Coat of Arms
11%inclusion91 decks805 decks
9%synergy
Prosthetic Injector
11%inclusion91 decks805 decks
11%synergy
Banner of Kinship
11%inclusion81 decks763 decks
9%synergy
Door of Destinies
10%inclusion84 decks805 decks
8%synergy
Chronicle of Victory
10%inclusion29 decks283 decks
8%synergy
Grafted Exoskeleton
10%inclusion81 decks805 decks
9%synergy
Whip of Erebos
10%inclusion79 decks805 decks
-1%synergy
Wayfarer's Bauble
7.7%inclusion62 decks805 decks
-7%synergy
Eldrazi Monument
6.2%inclusion50 decks805 decks
5%synergy
Vat of Rebirth
5.8%inclusion47 decks805 decks
3%synergy
Hall of Triumph
5.5%inclusion44 decks805 decks
5%synergy
The Darkness Crystal
5.4%inclusion27 decks496 decks
-15%synergy
Enchantments
Necrogen Communion
43%inclusion344 decks805 decks
41%synergy
Phyrexian Arena
35%inclusion281 decks805 decks
-4%synergy
Cover of Darkness
30%inclusion241 decks805 decks
27%synergy
Phyresis
21%inclusion172 decks805 decks
19%synergy
Bad Moon
21%inclusion172 decks805 decks
18%synergy
Oversold Cemetery
18%inclusion144 decks805 decks
13%synergy
Haunted One
17%inclusion139 decks805 decks
15%synergy
Tribute to Horobi
16%inclusion132 decks805 decks
15%synergy
Black Market
12%inclusion94 decks805 decks
-9%synergy
Grave Pact
12%inclusion93 decks805 decks
-8%synergy
Black Market Connections
11%inclusion87 decks805 decks
-14%synergy
Vampiric Rites
10%inclusion78 decks805 decks
4%synergy
Intimidation
8.8%inclusion71 decks805 decks
8%synergy
Lord Skitter's Blessing
8.2%inclusion66 decks805 decks
8%synergy
Dictate of Erebos
7.0%inclusion56 decks805 decks
-4%synergy
Phyrexian Reclamation
6.0%inclusion48 decks805 decks
-4%synergy
Relic Putrescence
5.3%inclusion43 decks805 decks
5%synergy
Dark Prophecy
5.2%inclusion42 decks805 decks
1%synergy
Planeswalkers
Vraska, Betrayal's Sting
25%inclusion203 decks805 decks
23%synergy
Liliana of the Dark Realms
8.6%inclusion69 decks805 decks
-5%synergy
Utility Lands
Swarmyard
50%inclusion404 decks805 decks
45%synergy
Rogue's Passage
41%inclusion332 decks805 decks
22%synergy
Karn's Bastion
41%inclusion329 decks805 decks
37%synergy
Mudflat Village
40%inclusion325 decks805 decks
38%synergy
Bojuka Bog
39%inclusion314 decks805 decks
-8%synergy
Cabal Coffers
29%inclusion230 decks805 decks
-26%synergy
Witch's Cottage
26%inclusion213 decks805 decks
2%synergy
Mortuary Mire
24%inclusion194 decks805 decks
11%synergy
Cabal Stronghold
21%inclusion166 decks805 decks
-13%synergy
Reliquary Tower
18%inclusion142 decks805 decks
-11%synergy
Access Tunnel
18%inclusion141 decks805 decks
14%synergy
Three Tree City
17%inclusion136 decks805 decks
12%synergy
Urborg, Tomb of Yawgmoth
15%inclusion121 decks805 decks
-23%synergy
Nykthos, Shrine to Nyx
13%inclusion105 decks805 decks
-17%synergy
Barren Moor
11%inclusion89 decks805 decks
2%synergy
Castle Locthwain
9.2%inclusion74 decks805 decks
-7%synergy
Phyrexian Tower
9.1%inclusion73 decks805 decks
-17%synergy
Secret Tunnel
8.7%inclusion30 decks343 decks
8%synergy
Crypt of Agadeem
8.7%inclusion70 decks805 decks
-3%synergy
War Room
7.5%inclusion60 decks805 decks
-9%synergy
Temple of the False God
7.1%inclusion57 decks805 decks
-0%synergy
The Dross Pits
6.0%inclusion48 decks805 decks
5%synergy
Shizo, Death's Storehouse
5.5%inclusion44 decks805 decks
-5%synergy
Memorial to Folly
5.5%inclusion44 decks805 decks
2%synergy
Takenuma, Abandoned Mire
5.5%inclusion44 decks805 decks
-10%synergy
Mana Artifacts
Sol Ring
75%inclusion600 decks805 decks
-11%synergy
Arcane Signet
47%inclusion378 decks805 decks
-14%synergy
Glistening Sphere
31%inclusion250 decks805 decks
30%synergy
Charcoal Diamond
27%inclusion220 decks805 decks
6%synergy
Patchwork Banner
25%inclusion199 decks805 decks
20%synergy
Mind Stone
18%inclusion146 decks805 decks
-9%synergy
Heraldic Banner
18%inclusion145 decks805 decks
13%synergy
Staff of Compleation
16%inclusion130 decks805 decks
15%synergy
Phyrexian Atlas
14%inclusion116 decks805 decks
14%synergy
Thought Vessel
9.2%inclusion74 decks805 decks
-15%synergy
Caged Sun
8.8%inclusion71 decks805 decks
-1%synergy
Commander's Sphere
7.7%inclusion62 decks805 decks
0%synergy
Lands
Swamp
99%inclusion795 decks805 decks
3%synergy
Path of Ancestry
35%inclusion282 decks805 decks
30%synergy
Myriad Landscape
19%inclusion149 decks805 decks
-6%synergy
Big Apple, 3 a.m.
12%inclusion29 decks245 decks
10%synergy
Malakir Rebirth
9.3%inclusion75 decks805 decks
-15%synergy
Fell the Profane
9.2%inclusion74 decks805 decks
-11%synergy
Cavern of Souls
8.8%inclusion71 decks805 decks
2%synergy
Command Tower
7.7%inclusion62 decks805 decks
2%synergy
Escape Tunnel
7.2%inclusion58 decks805 decks
6%synergy
Evolving Wilds
5.3%inclusion43 decks805 decks
1%synergy
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