Karumonix, the Rat King (Commander) - Expensive

Karumonix, the Rat King
Rank #381
649decks
As CommanderAs CardAverage DeckDecks
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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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Enchantments
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Utility Lands
Mana Artifacts
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Decorum Dissertation
5.2%inclusion3 decks58 decks
0%synergy
Grave Researcher
2.9%inclusion2 decks70 decks
-4%synergy
Emeritus of Woe
1.8%inclusion1 decks57 decks
-6%synergy
Stensian Sanguinist
1.5%inclusion1 decks68 decks
-1%synergy
High Synergy Cards
Marrow-Gnawer
91%inclusion593 decks649 decks
88%synergy
Piper of the Swarm
81%inclusion525 decks649 decks
74%synergy
Ashcoat of the Shadow Swarm
73%inclusion475 decks649 decks
70%synergy
Swarmyard
74%inclusion482 decks649 decks
69%synergy
Pack Rat
72%inclusion467 decks649 decks
66%synergy
Rat Colony
70%inclusion453 decks649 decks
64%synergy
Ogre Slumlord
68%inclusion442 decks649 decks
58%synergy
Lord Skitter, Sewer King
63%inclusion408 decks649 decks
55%synergy
Blightbelly Rat
58%inclusion374 decks649 decks
54%synergy
Ichor Rats
57%inclusion367 decks649 decks
54%synergy
Top Cards
Jet Medallion
81%inclusion525 decks649 decks
19%synergy
Dark Ritual
77%inclusion499 decks649 decks
10%synergy
Bontu's Monument
59%inclusion380 decks649 decks
30%synergy
Herald's Horn
54%inclusion348 decks649 decks
48%synergy
Skullclamp
50%inclusion325 decks649 decks
28%synergy
Deadly Rollick
49%inclusion318 decks649 decks
25%synergy
Thrumming Stone
47%inclusion306 decks649 decks
43%synergy
Infectious Inquiry
44%inclusion286 decks649 decks
41%synergy
Ratcatcher
44%inclusion285 decks649 decks
40%synergy
Vraska's Fall
44%inclusion284 decks649 decks
40%synergy
Game Changers
Demonic Tutor
77%inclusion497 decks649 decks
49%synergy
Vampiric Tutor
66%inclusion431 decks649 decks
46%synergy
Bolas's Citadel
38%inclusion245 decks649 decks
9%synergy
Imperial Seal
25%inclusion160 decks649 decks
18%synergy
Ancient Tomb
19%inclusion122 decks649 decks
7%synergy
Necropotence
17%inclusion108 decks649 decks
2%synergy
The One Ring
12%inclusion75 decks649 decks
2%synergy
Chrome Mox
11%inclusion73 decks649 decks
5%synergy
Mana Vault
8.5%inclusion55 decks649 decks
2%synergy
Opposition Agent
6.8%inclusion44 decks649 decks
-3%synergy
Creatures
Crypt Rats
40%inclusion260 decks649 decks
35%synergy
Rat King, Verminister
38%inclusion73 decks190 decks
35%synergy
Ayara, First of Locthwain
35%inclusion227 decks649 decks
9%synergy
Typhoid Rats
34%inclusion223 decks649 decks
31%synergy
Septic Rats
34%inclusion221 decks649 decks
32%synergy
Tangled Colony
34%inclusion219 decks649 decks
31%synergy
Crypt Ghast
34%inclusion218 decks649 decks
-14%synergy
Rancid Rats
32%inclusion210 decks649 decks
30%synergy
Ink-Eyes, Servant of Oni
32%inclusion209 decks649 decks
29%synergy
Lord Skitter's Butcher
30%inclusion197 decks649 decks
27%synergy
Gnat Miser
30%inclusion196 decks649 decks
27%synergy
Species Specialist
28%inclusion182 decks649 decks
25%synergy
Nashi, Moon Sage's Scion
27%inclusion178 decks649 decks
24%synergy
Persistent Marshstalker
25%inclusion155 decks611 decks
22%synergy
Burglar Rat
24%inclusion159 decks649 decks
14%synergy
Stronghold Rats
24%inclusion159 decks649 decks
21%synergy
Changeling Outcast
24%inclusion156 decks649 decks
19%synergy
Swarm of Rats
24%inclusion154 decks649 decks
21%synergy
Valley Rotcaller
23%inclusion140 decks612 decks
20%synergy
Rat King, Pale Piper
21%inclusion32 decks150 decks
17%synergy
Wave of Rats
21%inclusion137 decks649 decks
19%synergy
Yawgmoth, Thran Physician
21%inclusion134 decks649 decks
11%synergy
Voracious Vermin
21%inclusion134 decks649 decks
18%synergy
Gray Merchant of Asphodel
20%inclusion130 decks649 decks
-31%synergy
Throat Slitter
19%inclusion121 decks649 decks
17%synergy
Relentless Rats
18%inclusion120 decks649 decks
17%synergy
Chittering Witch
16%inclusion106 decks649 decks
12%synergy
Locust Miser
15%inclusion100 decks649 decks
14%synergy
Filth
15%inclusion98 decks649 decks
13%synergy
Roaming Throne
14%inclusion91 decks649 decks
11%synergy
Nezumi Informant
13%inclusion82 decks649 decks
6%synergy
Engine Rat
12%inclusion61 decks501 decks
10%synergy
Chittering Skitterling
12%inclusion78 decks649 decks
11%synergy
Nezumi Graverobber
12%inclusion75 decks649 decks
10%synergy
Pestilence Rats
12%inclusion75 decks649 decks
10%synergy
Nezumi Prowler
11%inclusion72 decks649 decks
10%synergy
Undercity Dire Rat
10%inclusion43 decks422 decks
8%synergy
Old Flitterfang
10%inclusion63 decks649 decks
8%synergy
Ruin Rat
8.9%inclusion58 decks649 decks
8%synergy
Rotting Rats
8.5%inclusion55 decks649 decks
5%synergy
Blood Artist
8.3%inclusion54 decks649 decks
-24%synergy
Gnawing Vermin
8.0%inclusion52 decks649 decks
6%synergy
Zodiac Rat
8.0%inclusion52 decks649 decks
8%synergy
Adaptive Automaton
7.9%inclusion51 decks649 decks
7%synergy
Nezumi Cutthroat
7.4%inclusion48 decks649 decks
7%synergy
Twisted Sewer-Witch
6.6%inclusion43 decks649 decks
5%synergy
Ruthless Radrat
6.5%inclusion42 decks649 decks
6%synergy
Okiba-Gang Shinobi
6.5%inclusion42 decks649 decks
6%synergy
Ravenous Rats
6.3%inclusion41 decks649 decks
5%synergy
Zulaport Cutthroat
6.3%inclusion41 decks649 decks
-17%synergy
Instants
Village Rites
26%inclusion168 decks649 decks
0%synergy
Defile
26%inclusion166 decks649 decks
-11%synergy
Whisper of the Dross
25%inclusion165 decks649 decks
23%synergy
Go for the Throat
22%inclusion143 decks649 decks
-1%synergy
Malakir Rebirth
20%inclusion132 decks649 decks
-3%synergy
Deadly Dispute
20%inclusion131 decks649 decks
-6%synergy
Cabal Ritual
19%inclusion121 decks649 decks
0%synergy
Withering Torment
19%inclusion108 decks582 decks
-13%synergy
Infernal Grasp
18%inclusion120 decks649 decks
-7%synergy
Tainted Strike
18%inclusion120 decks649 decks
15%synergy
Culling the Weak
17%inclusion113 decks649 decks
1%synergy
Fell the Profane
15%inclusion95 decks640 decks
-4%synergy
Imp's Mischief
14%inclusion93 decks649 decks
-10%synergy
Grim Affliction
14%inclusion92 decks649 decks
12%synergy
Corrupted Conviction
13%inclusion83 decks649 decks
0%synergy
Sudden Spoiling
12%inclusion77 decks649 decks
3%synergy
Snuff Out
12%inclusion76 decks649 decks
-1%synergy
Tragic Slip
12%inclusion76 decks649 decks
-8%synergy
Murder
8.2%inclusion53 decks649 decks
-2%synergy
Entomb
7.6%inclusion49 decks649 decks
-5%synergy
Foul-Tongue Shriek
7.1%inclusion46 decks649 decks
5%synergy
Rat Out
6.8%inclusion44 decks649 decks
5%synergy
Anoint with Affliction
6.6%inclusion43 decks649 decks
6%synergy
Hero's Downfall
6.5%inclusion42 decks649 decks
0%synergy
Dismember
6.5%inclusion42 decks649 decks
-4%synergy
Darkness
6.3%inclusion41 decks649 decks
-4%synergy
Baleful Mastery
5.5%inclusion36 decks649 decks
-3%synergy
Sorceries
Phyresis Outbreak
39%inclusion254 decks649 decks
37%synergy
Feed the Swarm
38%inclusion245 decks649 decks
-13%synergy
Kindred Dominance
36%inclusion233 decks649 decks
31%synergy
Drown in Ichor
35%inclusion224 decks649 decks
31%synergy
Patriarch's Bidding
34%inclusion218 decks649 decks
29%synergy
Diabolic Intent
32%inclusion209 decks649 decks
17%synergy
Toxic Deluge
28%inclusion184 decks649 decks
-8%synergy
Grim Tutor
27%inclusion172 decks649 decks
15%synergy
Damnation
26%inclusion168 decks649 decks
5%synergy
Reanimate
24%inclusion153 decks649 decks
-16%synergy
Sign in Blood
23%inclusion149 decks649 decks
-12%synergy
Bloodline Bidding
21%inclusion45 decks213 decks
17%synergy
Revenge of the Rats
20%inclusion111 decks550 decks
17%synergy
Swarmyard Massacre
19%inclusion114 decks605 decks
16%synergy
Plague of Vermin
18%inclusion115 decks649 decks
15%synergy
Night's Whisper
17%inclusion112 decks649 decks
-7%synergy
Echoing Return
17%inclusion110 decks649 decks
14%synergy
Crippling Fear
14%inclusion89 decks649 decks
11%synergy
Diabolic Tutor
13%inclusion85 decks649 decks
-1%synergy
Pact of the Serpent
11%inclusion72 decks649 decks
9%synergy
Victimize
11%inclusion70 decks649 decks
-16%synergy
Torment of Hailfire
10%inclusion68 decks649 decks
-5%synergy
Living Death
10%inclusion67 decks649 decks
0%synergy
Read the Bones
10%inclusion67 decks649 decks
-6%synergy
Bubbling Muck
10%inclusion66 decks649 decks
-5%synergy
Vat Emergence
8.6%inclusion56 decks649 decks
7%synergy
Unearth
8.2%inclusion53 decks649 decks
-1%synergy
Insatiable Avarice
7.7%inclusion50 decks649 decks
-4%synergy
Agadeem's Awakening
7.2%inclusion47 decks649 decks
0%synergy
Secret Salvage
6.5%inclusion42 decks649 decks
5%synergy
Spread the Sickness
6.3%inclusion41 decks649 decks
6%synergy
Haunting Voyage
6.2%inclusion40 decks649 decks
5%synergy
Exsanguinate
5.5%inclusion36 decks649 decks
-19%synergy
Forever Young
5.4%inclusion35 decks649 decks
4%synergy
Gruesome Fate
5.2%inclusion34 decks649 decks
3%synergy
Mutilate
5.1%inclusion33 decks649 decks
-12%synergy
Utility Artifacts
Vanquisher's Banner
35%inclusion228 decks649 decks
31%synergy
Lightning Greaves
30%inclusion192 decks649 decks
-4%synergy
Chronicle of Victory
24%inclusion52 decks213 decks
21%synergy
Whip of Erebos
21%inclusion136 decks649 decks
10%synergy
Coat of Arms
21%inclusion135 decks649 decks
18%synergy
Contagion Engine
17%inclusion108 decks649 decks
15%synergy
Ashnod's Altar
16%inclusion107 decks649 decks
-3%synergy
Door of Destinies
16%inclusion106 decks649 decks
14%synergy
Thornbite Staff
15%inclusion99 decks649 decks
12%synergy
Eldrazi Monument
15%inclusion95 decks649 decks
13%synergy
Contagion Clasp
13%inclusion87 decks649 decks
11%synergy
Swiftfoot Boots
13%inclusion84 decks649 decks
-18%synergy
Phyrexian Altar
12%inclusion80 decks649 decks
-1%synergy
The Darkness Crystal
12%inclusion52 decks424 decks
-8%synergy
Akroma's Memorial
11%inclusion69 decks649 decks
10%synergy
Banner of Kinship
11%inclusion58 decks551 decks
8%synergy
Sensei's Divining Top
10%inclusion65 decks649 decks
2%synergy
Sword of Truth and Justice
9.4%inclusion61 decks649 decks
9%synergy
Expedition Map
8.5%inclusion55 decks649 decks
-3%synergy
Grafted Exoskeleton
8.5%inclusion55 decks649 decks
7%synergy
Urza's Incubator
8.0%inclusion52 decks649 decks
6%synergy
Gathering Stone
8.0%inclusion17 decks213 decks
7%synergy
Aetherflux Reservoir
7.2%inclusion47 decks649 decks
-2%synergy
Enchantments
Cover of Darkness
43%inclusion282 decks649 decks
40%synergy
Phyrexian Arena
43%inclusion278 decks649 decks
3%synergy
Black Market Connections
39%inclusion253 decks649 decks
15%synergy
Grave Pact
38%inclusion248 decks649 decks
19%synergy
Black Market
22%inclusion146 decks649 decks
1%synergy
The Meathook Massacre
21%inclusion139 decks649 decks
4%synergy
Dictate of Erebos
18%inclusion117 decks649 decks
7%synergy
Haunted One
18%inclusion116 decks649 decks
15%synergy
Necrogen Communion
18%inclusion114 decks649 decks
16%synergy
Oversold Cemetery
15%inclusion99 decks649 decks
10%synergy
Phyresis
12%inclusion76 decks649 decks
10%synergy
Bad Moon
10%inclusion66 decks649 decks
7%synergy
Exquisite Blood
10%inclusion62 decks649 decks
-4%synergy
Phyrexian Reclamation
8.0%inclusion52 decks649 decks
-2%synergy
Contamination
7.2%inclusion47 decks649 decks
4%synergy
Dark Prophecy
6.8%inclusion44 decks649 decks
3%synergy
Sanguine Bond
6.0%inclusion39 decks649 decks
-6%synergy
No Mercy
5.7%inclusion37 decks649 decks
-2%synergy
Planeswalkers
Vraska, Betrayal's Sting
31%inclusion204 decks649 decks
29%synergy
Liliana of the Dark Realms
13%inclusion83 decks649 decks
-1%synergy
Utility Lands
Cabal Coffers
88%inclusion573 decks649 decks
33%synergy
Urborg, Tomb of Yawgmoth
75%inclusion484 decks649 decks
37%synergy
Nykthos, Shrine to Nyx
65%inclusion421 decks649 decks
35%synergy
Bojuka Bog
50%inclusion326 decks649 decks
3%synergy
Phyrexian Tower
49%inclusion318 decks649 decks
24%synergy
Cabal Stronghold
46%inclusion299 decks649 decks
12%synergy
Karn's Bastion
44%inclusion288 decks649 decks
40%synergy
Three Tree City
44%inclusion271 decks612 decks
40%synergy
Reliquary Tower
37%inclusion237 decks649 decks
6%synergy
Rogue's Passage
30%inclusion195 decks649 decks
11%synergy
Shizo, Death's Storehouse
29%inclusion187 decks649 decks
19%synergy
Mudflat Village
28%inclusion172 decks617 decks
25%synergy
Witch's Cottage
27%inclusion175 decks649 decks
2%synergy
Castle Locthwain
27%inclusion172 decks649 decks
10%synergy
Takenuma, Abandoned Mire
24%inclusion155 decks649 decks
8%synergy
War Room
21%inclusion136 decks649 decks
5%synergy
Crypt of Agadeem
20%inclusion127 decks649 decks
8%synergy
Mortuary Mire
17%inclusion108 decks649 decks
3%synergy
Volrath's Stronghold
12%inclusion78 decks649 decks
8%synergy
Inkmoth Nexus
11%inclusion73 decks649 decks
10%synergy
Secret Tunnel
11%inclusion31 decks285 decks
10%synergy
Urza's Saga
9.4%inclusion61 decks649 decks
1%synergy
Minas Morgul, Dark Fortress
8.2%inclusion53 decks649 decks
5%synergy
Access Tunnel
7.7%inclusion50 decks649 decks
5%synergy
Lake of the Dead
7.6%inclusion49 decks649 decks
2%synergy
Command Beacon
6.9%inclusion45 decks649 decks
-1%synergy
Mutavault
6.8%inclusion44 decks649 decks
6%synergy
The Black Gate
6.6%inclusion43 decks649 decks
3%synergy
Deserted Temple
6.2%inclusion40 decks649 decks
2%synergy
Vesuva
5.5%inclusion36 decks649 decks
3%synergy
Temple of the False God
5.5%inclusion36 decks649 decks
-2%synergy
Mana Artifacts
Sol Ring
89%inclusion578 decks649 decks
3%synergy
Arcane Signet
55%inclusion355 decks649 decks
-7%synergy
Glistening Sphere
33%inclusion213 decks649 decks
32%synergy
The Soul Stone
30%inclusion107 decks361 decks
15%synergy
Patchwork Banner
21%inclusion129 decks609 decks
17%synergy
Staff of Compleation
18%inclusion116 decks649 decks
16%synergy
Thought Vessel
14%inclusion89 decks649 decks
-12%synergy
Throne of Eldraine
12%inclusion75 decks649 decks
2%synergy
Mind Stone
9.4%inclusion61 decks649 decks
-19%synergy
Caged Sun
9.2%inclusion60 decks649 decks
-2%synergy
Charcoal Diamond
9.1%inclusion59 decks649 decks
-13%synergy
Lotus Petal
8.9%inclusion58 decks649 decks
2%synergy
Nyx Lotus
7.6%inclusion49 decks649 decks
1%synergy
Gauntlet of Power
7.4%inclusion48 decks649 decks
4%synergy
Fellwar Stone
6.8%inclusion44 decks649 decks
-7%synergy
Mox Diamond
6.6%inclusion43 decks649 decks
3%synergy
Heraldic Banner
5.9%inclusion38 decks649 decks
0%synergy
Mox Amber
5.7%inclusion37 decks649 decks
1%synergy
Lands
Swamp
89%inclusion577 decks649 decks
-6%synergy
Cavern of Souls
50%inclusion326 decks649 decks
43%synergy
Path of Ancestry
29%inclusion187 decks649 decks
24%synergy
Malakir Rebirth
20%inclusion132 decks649 decks
-3%synergy
Fell the Profane
15%inclusion95 decks640 decks
-4%synergy
Myriad Landscape
15%inclusion96 decks649 decks
-11%synergy
Snow-Covered Swamp
13%inclusion85 decks649 decks
7%synergy
Command Tower
13%inclusion82 decks649 decks
7%synergy
Polluted Delta
8.6%inclusion56 decks649 decks
5%synergy
Bloodstained Mire
8.3%inclusion54 decks649 decks
5%synergy
Verdant Catacombs
7.6%inclusion49 decks649 decks
4%synergy
Marsh Flats
7.4%inclusion48 decks649 decks
4%synergy
Agadeem's Awakening
7.2%inclusion47 decks649 decks
0%synergy
Urza's Cave
6.3%inclusion41 decks649 decks
-2%synergy
Gemstone Caverns
5.9%inclusion38 decks649 decks
1%synergy
Evolving Wilds
5.7%inclusion37 decks649 decks
2%synergy
Big Apple, 3 a.m.
5.3%inclusion8 decks150 decks
3%synergy
Prismatic Vista
5.1%inclusion33 decks649 decks
3%synergy
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