Karumonix, the Rat King (Commander) - Expensive

Karumonix, the Rat King
Rank #412
691decks
As CommanderAs CardAverage DeckDecks
Bracket
All1234
5
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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Orcrist, Goblin-cleaver
3.2%inclusion4 decks125 decks
3%synergy
Rank Rat
3.1%inclusion1 decks32 decks
1%synergy
Hall of Echoes
3.1%inclusion1 decks32 decks
3%synergy
Troop of Ponies
0.9%inclusion1 decks110 decks
-2%synergy
High Synergy Cards
Marrow-Gnawer
92%inclusion634 decks691 decks
88%synergy
Piper of the Swarm
82%inclusion570 decks691 decks
76%synergy
Ashcoat of the Shadow Swarm
76%inclusion523 decks691 decks
72%synergy
Swarmyard
74%inclusion514 decks691 decks
69%synergy
Pack Rat
73%inclusion503 decks691 decks
67%synergy
Rat Colony
72%inclusion497 decks691 decks
66%synergy
Lord Skitter, Sewer King
66%inclusion459 decks691 decks
58%synergy
Ogre Slumlord
68%inclusion468 decks691 decks
58%synergy
Ichor Rats
60%inclusion418 decks691 decks
58%synergy
Blightbelly Rat
61%inclusion421 decks691 decks
58%synergy
Top Cards
Jet Medallion
80%inclusion555 decks691 decks
18%synergy
Dark Ritual
78%inclusion541 decks691 decks
11%synergy
Bontu's Monument
56%inclusion388 decks691 decks
28%synergy
Skullclamp
53%inclusion368 decks691 decks
31%synergy
Deadly Rollick
52%inclusion362 decks691 decks
27%synergy
Herald's Horn
50%inclusion347 decks691 decks
45%synergy
Infectious Inquiry
47%inclusion323 decks691 decks
44%synergy
Vraska's Fall
45%inclusion314 decks691 decks
42%synergy
Thrumming Stone
45%inclusion310 decks691 decks
41%synergy
Cover of Darkness
44%inclusion305 decks691 decks
41%synergy
Game Changers
Demonic Tutor
78%inclusion539 decks691 decks
51%synergy
Vampiric Tutor
67%inclusion463 decks691 decks
46%synergy
Bolas's Citadel
37%inclusion256 decks691 decks
9%synergy
Imperial Seal
27%inclusion188 decks691 decks
20%synergy
Ancient Tomb
21%inclusion148 decks691 decks
10%synergy
Necropotence
19%inclusion134 decks691 decks
5%synergy
The One Ring
15%inclusion102 decks691 decks
6%synergy
Chrome Mox
12%inclusion85 decks691 decks
6%synergy
Mana Vault
10%inclusion72 decks691 decks
4%synergy
Opposition Agent
7.7%inclusion53 decks691 decks
-2%synergy
Creatures
Rat King, Verminister
44%inclusion153 decks351 decks
40%synergy
Crypt Rats
42%inclusion290 decks691 decks
38%synergy
Ratcatcher
42%inclusion289 decks691 decks
39%synergy
Tangled Colony
37%inclusion257 decks691 decks
34%synergy
Septic Rats
36%inclusion250 decks691 decks
34%synergy
Ayara, First of Locthwain
36%inclusion248 decks691 decks
11%synergy
Typhoid Rats
36%inclusion246 decks691 decks
32%synergy
Rancid Rats
34%inclusion234 decks691 decks
32%synergy
Crypt Ghast
34%inclusion232 decks691 decks
-13%synergy
Gnat Miser
32%inclusion220 decks691 decks
29%synergy
Lord Skitter's Butcher
31%inclusion214 decks691 decks
28%synergy
Ink-Eyes, Servant of Oni
31%inclusion214 decks691 decks
28%synergy
Rat King, Pale Piper
28%inclusion89 decks319 decks
24%synergy
Species Specialist
27%inclusion185 decks691 decks
23%synergy
Persistent Marshstalker
27%inclusion184 decks691 decks
24%synergy
Nashi, Moon Sage's Scion
26%inclusion183 decks691 decks
23%synergy
Valley Rotcaller
26%inclusion182 decks691 decks
24%synergy
Stronghold Rats
26%inclusion180 decks691 decks
23%synergy
Burglar Rat
25%inclusion174 decks691 decks
15%synergy
Changeling Outcast
25%inclusion173 decks691 decks
20%synergy
Swarm of Rats
24%inclusion165 decks691 decks
22%synergy
Voracious Vermin
23%inclusion159 decks691 decks
20%synergy
Yawgmoth, Thran Physician
22%inclusion151 decks691 decks
12%synergy
Wave of Rats
21%inclusion145 decks691 decks
19%synergy
Gray Merchant of Asphodel
19%inclusion131 decks691 decks
-31%synergy
Relentless Rats
18%inclusion123 decks691 decks
16%synergy
Throat Slitter
16%inclusion112 decks691 decks
15%synergy
Chittering Witch
16%inclusion111 decks691 decks
12%synergy
Locust Miser
16%inclusion109 decks691 decks
14%synergy
Nezumi Informant
14%inclusion95 decks691 decks
8%synergy
Chittering Skitterling
13%inclusion93 decks691 decks
13%synergy
Filth
13%inclusion91 decks691 decks
11%synergy
Roaming Throne
13%inclusion87 decks691 decks
10%synergy
Nezumi Prowler
12%inclusion83 decks691 decks
11%synergy
Pestilence Rats
12%inclusion83 decks691 decks
10%synergy
Engine Rat
12%inclusion74 decks632 decks
10%synergy
Nezumi Graverobber
11%inclusion76 decks691 decks
10%synergy
Undercity Dire Rat
11%inclusion60 decks554 decks
9%synergy
Blood Artist
10%inclusion68 decks691 decks
-22%synergy
Zodiac Rat
9.3%inclusion64 decks691 decks
9%synergy
Ruin Rat
9.1%inclusion63 decks691 decks
8%synergy
Old Flitterfang
8.8%inclusion61 decks691 decks
8%synergy
Gnawing Vermin
8.5%inclusion59 decks691 decks
7%synergy
Rotting Rats
8.2%inclusion57 decks691 decks
5%synergy
Adaptive Automaton
7.7%inclusion53 decks691 decks
7%synergy
Nezumi Cutthroat
7.2%inclusion50 decks691 decks
7%synergy
Zulaport Cutthroat
7.1%inclusion49 decks691 decks
-16%synergy
Twisted Sewer-Witch
7.1%inclusion49 decks691 decks
6%synergy
Ravenous Rats
6.9%inclusion48 decks691 decks
5%synergy
Drainpipe Vermin
6.9%inclusion48 decks691 decks
6%synergy
Instants
Whisper of the Dross
27%inclusion187 decks691 decks
25%synergy
Village Rites
27%inclusion187 decks691 decks
1%synergy
Defile
27%inclusion187 decks691 decks
-8%synergy
Go for the Throat
23%inclusion156 decks691 decks
0%synergy
Malakir Rebirth
22%inclusion149 decks691 decks
-2%synergy
Culling the Weak
21%inclusion148 decks691 decks
3%synergy
Deadly Dispute
21%inclusion142 decks691 decks
-7%synergy
Cabal Ritual
21%inclusion142 decks691 decks
2%synergy
Tainted Strike
20%inclusion141 decks691 decks
17%synergy
Withering Torment
19%inclusion133 decks691 decks
-13%synergy
Imp's Mischief
18%inclusion121 decks691 decks
-8%synergy
Infernal Grasp
15%inclusion106 decks691 decks
-10%synergy
Fell the Profane
15%inclusion105 decks691 decks
-5%synergy
Grim Affliction
15%inclusion102 decks691 decks
13%synergy
Snuff Out
13%inclusion89 decks691 decks
-1%synergy
Corrupted Conviction
13%inclusion88 decks691 decks
0%synergy
Tragic Slip
12%inclusion83 decks691 decks
-7%synergy
Sudden Spoiling
11%inclusion78 decks691 decks
3%synergy
Murder
7.8%inclusion54 decks691 decks
-2%synergy
Darkness
7.7%inclusion53 decks691 decks
-3%synergy
Entomb
7.5%inclusion52 decks691 decks
-5%synergy
Anoint with Affliction
6.9%inclusion48 decks691 decks
6%synergy
Rat Out
6.8%inclusion47 decks691 decks
5%synergy
Foul-Tongue Shriek
5.6%inclusion39 decks691 decks
4%synergy
Hero's Downfall
5.4%inclusion37 decks691 decks
-1%synergy
Dismember
5.1%inclusion35 decks691 decks
-5%synergy
Sorceries
Phyresis Outbreak
42%inclusion291 decks691 decks
41%synergy
Feed the Swarm
38%inclusion265 decks691 decks
-12%synergy
Drown in Ichor
38%inclusion261 decks691 decks
34%synergy
Kindred Dominance
35%inclusion240 decks691 decks
30%synergy
Diabolic Intent
34%inclusion232 decks691 decks
18%synergy
Patriarch's Bidding
32%inclusion218 decks691 decks
28%synergy
Toxic Deluge
31%inclusion212 decks691 decks
-6%synergy
Reanimate
29%inclusion197 decks691 decks
-13%synergy
Damnation
26%inclusion181 decks691 decks
6%synergy
Grim Tutor
26%inclusion177 decks691 decks
14%synergy
Sign in Blood
22%inclusion155 decks691 decks
-12%synergy
Revenge of the Rats
22%inclusion147 decks673 decks
19%synergy
Bloodline Bidding
20%inclusion73 decks369 decks
16%synergy
Swarmyard Massacre
19%inclusion132 decks691 decks
17%synergy
Night's Whisper
18%inclusion124 decks691 decks
-8%synergy
Plague of Vermin
18%inclusion121 decks691 decks
15%synergy
Echoing Return
15%inclusion104 decks691 decks
12%synergy
Crippling Fear
13%inclusion93 decks691 decks
11%synergy
Diabolic Tutor
11%inclusion74 decks691 decks
-3%synergy
Victimize
11%inclusion74 decks691 decks
-17%synergy
Torment of Hailfire
11%inclusion74 decks691 decks
-4%synergy
Pact of the Serpent
11%inclusion73 decks691 decks
9%synergy
Agadeem's Awakening
10%inclusion67 decks691 decks
2%synergy
Bubbling Muck
10%inclusion66 decks691 decks
-6%synergy
Living Death
10%inclusion66 decks691 decks
-1%synergy
Read the Bones
9.3%inclusion64 decks691 decks
-6%synergy
Vat Emergence
8.7%inclusion60 decks691 decks
7%synergy
Unearth
7.7%inclusion53 decks691 decks
-1%synergy
Exsanguinate
7.4%inclusion51 decks691 decks
-17%synergy
Insatiable Avarice
6.7%inclusion46 decks691 decks
-4%synergy
Spread the Sickness
5.8%inclusion40 decks691 decks
5%synergy
Yawgmoth's Will
5.8%inclusion40 decks691 decks
2%synergy
Secret Salvage
5.6%inclusion39 decks691 decks
4%synergy
Gruesome Fate
5.2%inclusion36 decks691 decks
3%synergy
Utility Artifacts
Lightning Greaves
34%inclusion238 decks691 decks
1%synergy
Vanquisher's Banner
33%inclusion231 decks691 decks
30%synergy
Chronicle of Victory
22%inclusion80 decks369 decks
19%synergy
Whip of Erebos
21%inclusion144 decks691 decks
10%synergy
Coat of Arms
20%inclusion136 decks691 decks
17%synergy
Ashnod's Altar
18%inclusion124 decks691 decks
-2%synergy
Contagion Engine
18%inclusion121 decks691 decks
16%synergy
Thornbite Staff
16%inclusion111 decks691 decks
13%synergy
Swiftfoot Boots
16%inclusion110 decks691 decks
-16%synergy
Door of Destinies
15%inclusion104 decks691 decks
13%synergy
Contagion Clasp
15%inclusion101 decks691 decks
13%synergy
Phyrexian Altar
14%inclusion96 decks691 decks
-0%synergy
Eldrazi Monument
13%inclusion90 decks691 decks
11%synergy
The Darkness Crystal
12%inclusion69 decks556 decks
-8%synergy
Banner of Kinship
12%inclusion79 decks674 decks
10%synergy
Sensei's Divining Top
10%inclusion72 decks691 decks
3%synergy
Akroma's Memorial
9.4%inclusion65 decks691 decks
9%synergy
Sword of Truth and Justice
9.0%inclusion62 decks691 decks
8%synergy
Grafted Exoskeleton
8.5%inclusion59 decks691 decks
7%synergy
Urza's Incubator
8.0%inclusion55 decks691 decks
6%synergy
Expedition Map
7.4%inclusion51 decks691 decks
-4%synergy
Aetherflux Reservoir
6.7%inclusion46 decks691 decks
-2%synergy
Gathering Stone
6.5%inclusion24 decks369 decks
5%synergy
Enchantments
Phyrexian Arena
42%inclusion289 decks691 decks
3%synergy
Grave Pact
38%inclusion261 decks691 decks
18%synergy
Black Market Connections
37%inclusion256 decks691 decks
12%synergy
The Meathook Massacre
20%inclusion140 decks691 decks
3%synergy
Black Market
20%inclusion137 decks691 decks
-0%synergy
Necrogen Communion
19%inclusion128 decks691 decks
17%synergy
Haunted One
16%inclusion109 decks691 decks
13%synergy
Dictate of Erebos
16%inclusion109 decks691 decks
5%synergy
Oversold Cemetery
14%inclusion99 decks691 decks
9%synergy
Phyresis
12%inclusion85 decks691 decks
10%synergy
Exquisite Blood
9.4%inclusion65 decks691 decks
-4%synergy
Bad Moon
9.4%inclusion65 decks691 decks
6%synergy
Phyrexian Reclamation
7.4%inclusion51 decks691 decks
-2%synergy
Contamination
6.7%inclusion46 decks691 decks
3%synergy
Dark Prophecy
6.7%inclusion46 decks691 decks
3%synergy
Sanguine Bond
5.9%inclusion41 decks691 decks
-5%synergy
Planeswalkers
Vraska, Betrayal's Sting
33%inclusion229 decks691 decks
31%synergy
Liliana of the Dark Realms
14%inclusion100 decks691 decks
1%synergy
Utility Lands
Cabal Coffers
88%inclusion610 decks691 decks
34%synergy
Urborg, Tomb of Yawgmoth
76%inclusion522 decks691 decks
38%synergy
Nykthos, Shrine to Nyx
65%inclusion446 decks691 decks
35%synergy
Bojuka Bog
52%inclusion359 decks691 decks
5%synergy
Phyrexian Tower
50%inclusion348 decks691 decks
24%synergy
Karn's Bastion
46%inclusion318 decks691 decks
42%synergy
Three Tree City
46%inclusion318 decks691 decks
41%synergy
Cabal Stronghold
46%inclusion317 decks691 decks
12%synergy
Reliquary Tower
37%inclusion255 decks691 decks
8%synergy
Mudflat Village
29%inclusion199 decks691 decks
26%synergy
Rogue's Passage
29%inclusion199 decks691 decks
9%synergy
Witch's Cottage
29%inclusion197 decks691 decks
4%synergy
Shizo, Death's Storehouse
28%inclusion191 decks691 decks
17%synergy
Castle Locthwain
27%inclusion186 decks691 decks
10%synergy
Takenuma, Abandoned Mire
26%inclusion177 decks691 decks
10%synergy
War Room
22%inclusion151 decks691 decks
6%synergy
Crypt of Agadeem
21%inclusion142 decks691 decks
9%synergy
Mortuary Mire
16%inclusion108 decks691 decks
3%synergy
Volrath's Stronghold
13%inclusion93 decks691 decks
10%synergy
Secret Tunnel
11%inclusion49 decks432 decks
10%synergy
Urza's Saga
10%inclusion71 decks691 decks
2%synergy
Inkmoth Nexus
10%inclusion68 decks691 decks
9%synergy
Lake of the Dead
8.2%inclusion57 decks691 decks
3%synergy
Access Tunnel
8.0%inclusion55 decks691 decks
5%synergy
Minas Morgul, Dark Fortress
7.7%inclusion53 decks691 decks
5%synergy
Mutavault
7.1%inclusion49 decks691 decks
6%synergy
Command Beacon
7.1%inclusion49 decks691 decks
-1%synergy
Deserted Temple
5.6%inclusion39 decks691 decks
1%synergy
Vesuva
5.5%inclusion38 decks691 decks
3%synergy
The Black Gate
5.5%inclusion38 decks691 decks
2%synergy
Temple of the False God
5.4%inclusion37 decks691 decks
-2%synergy
Mana Artifacts
Sol Ring
91%inclusion627 decks691 decks
5%synergy
Arcane Signet
55%inclusion383 decks691 decks
-6%synergy
Glistening Sphere
32%inclusion223 decks691 decks
31%synergy
The Soul Stone
27%inclusion135 decks503 decks
11%synergy
Patchwork Banner
20%inclusion139 decks691 decks
16%synergy
Staff of Compleation
18%inclusion121 decks691 decks
16%synergy
Thought Vessel
14%inclusion94 decks691 decks
-11%synergy
Lotus Petal
11%inclusion76 decks691 decks
3%synergy
Throne of Eldraine
11%inclusion76 decks691 decks
2%synergy
Mind Stone
10%inclusion71 decks691 decks
-17%synergy
Charcoal Diamond
8.8%inclusion61 decks691 decks
-13%synergy
Caged Sun
8.2%inclusion57 decks691 decks
-2%synergy
Mox Diamond
7.1%inclusion49 decks691 decks
3%synergy
Heraldic Banner
6.9%inclusion48 decks691 decks
2%synergy
Fellwar Stone
6.9%inclusion48 decks691 decks
-7%synergy
Mox Amber
6.2%inclusion43 decks691 decks
2%synergy
Gauntlet of Power
6.1%inclusion42 decks691 decks
3%synergy
Nyx Lotus
6.1%inclusion42 decks691 decks
1%synergy
Lands
Swamp
90%inclusion623 decks691 decks
-5%synergy
Cavern of Souls
53%inclusion366 decks691 decks
46%synergy
Path of Ancestry
27%inclusion186 decks691 decks
22%synergy
Malakir Rebirth
22%inclusion149 decks691 decks
-2%synergy
Fell the Profane
15%inclusion105 decks691 decks
-5%synergy
Myriad Landscape
14%inclusion96 decks691 decks
-10%synergy
Command Tower
13%inclusion88 decks691 decks
7%synergy
Snow-Covered Swamp
12%inclusion82 decks691 decks
5%synergy
Big Apple, 3 a.m.
10%inclusion33 decks319 decks
9%synergy
Agadeem's Awakening
10%inclusion67 decks691 decks
2%synergy
Polluted Delta
9.0%inclusion62 decks691 decks
5%synergy
Bloodstained Mire
8.8%inclusion61 decks691 decks
5%synergy
Verdant Catacombs
8.7%inclusion60 decks691 decks
5%synergy
Marsh Flats
7.8%inclusion54 decks691 decks
4%synergy
Urza's Cave
6.8%inclusion47 decks691 decks
-1%synergy
Gemstone Caverns
6.5%inclusion45 decks691 decks
2%synergy
Evolving Wilds
5.2%inclusion36 decks691 decks
1%synergy
Prismatic Vista
5.1%inclusion35 decks691 decks
3%synergy
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