Karumonix, the Rat King (Commander) - Expensive

Karumonix, the Rat King
Rank #399
665decks
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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Marrow-Gnawer
93%inclusion619 decks665 decks
90%synergy
Piper of the Swarm
83%inclusion553 decks665 decks
76%synergy
Ashcoat of the Shadow Swarm
76%inclusion504 decks665 decks
72%synergy
Swarmyard
75%inclusion499 decks665 decks
69%synergy
Pack Rat
73%inclusion487 decks665 decks
67%synergy
Rat Colony
70%inclusion468 decks665 decks
65%synergy
Ogre Slumlord
70%inclusion463 decks665 decks
60%synergy
Lord Skitter, Sewer King
66%inclusion442 decks665 decks
58%synergy
Blightbelly Rat
61%inclusion408 decks665 decks
58%synergy
Ichor Rats
60%inclusion400 decks665 decks
57%synergy
Top Cards
Jet Medallion
80%inclusion531 decks665 decks
18%synergy
Dark Ritual
77%inclusion515 decks665 decks
10%synergy
Bontu's Monument
58%inclusion387 decks665 decks
30%synergy
Skullclamp
53%inclusion351 decks665 decks
31%synergy
Herald's Horn
51%inclusion338 decks665 decks
45%synergy
Deadly Rollick
50%inclusion333 decks665 decks
25%synergy
Infectious Inquiry
46%inclusion309 decks665 decks
44%synergy
Vraska's Fall
46%inclusion307 decks665 decks
43%synergy
Cover of Darkness
45%inclusion298 decks665 decks
42%synergy
Ratcatcher
44%inclusion292 decks665 decks
41%synergy
Game Changers
Demonic Tutor
76%inclusion503 decks665 decks
48%synergy
Vampiric Tutor
64%inclusion423 decks665 decks
43%synergy
Bolas's Citadel
37%inclusion248 decks665 decks
9%synergy
Imperial Seal
25%inclusion167 decks665 decks
18%synergy
Ancient Tomb
19%inclusion125 decks665 decks
7%synergy
Necropotence
17%inclusion116 decks665 decks
3%synergy
The One Ring
13%inclusion88 decks665 decks
4%synergy
Chrome Mox
11%inclusion75 decks665 decks
5%synergy
Mana Vault
9.3%inclusion62 decks665 decks
3%synergy
Opposition Agent
7.4%inclusion49 decks665 decks
-2%synergy
Creatures
Crypt Rats
42%inclusion280 decks665 decks
38%synergy
Rat King, Verminister
42%inclusion109 decks261 decks
39%synergy
Tangled Colony
37%inclusion248 decks665 decks
34%synergy
Septic Rats
37%inclusion244 decks665 decks
35%synergy
Ayara, First of Locthwain
36%inclusion242 decks665 decks
11%synergy
Typhoid Rats
36%inclusion241 decks665 decks
33%synergy
Crypt Ghast
35%inclusion231 decks665 decks
-13%synergy
Rancid Rats
34%inclusion228 decks665 decks
32%synergy
Ink-Eyes, Servant of Oni
33%inclusion218 decks665 decks
30%synergy
Lord Skitter's Butcher
32%inclusion216 decks665 decks
29%synergy
Gnat Miser
32%inclusion214 decks665 decks
29%synergy
Species Specialist
29%inclusion193 decks665 decks
26%synergy
Nashi, Moon Sage's Scion
28%inclusion187 decks665 decks
24%synergy
Rat King, Pale Piper
27%inclusion59 decks221 decks
23%synergy
Burglar Rat
26%inclusion176 decks665 decks
16%synergy
Persistent Marshstalker
26%inclusion176 decks665 decks
24%synergy
Valley Rotcaller
26%inclusion171 decks665 decks
23%synergy
Changeling Outcast
26%inclusion171 decks665 decks
21%synergy
Stronghold Rats
26%inclusion170 decks665 decks
22%synergy
Swarm of Rats
25%inclusion166 decks665 decks
23%synergy
Voracious Vermin
23%inclusion151 decks665 decks
20%synergy
Yawgmoth, Thran Physician
22%inclusion146 decks665 decks
12%synergy
Wave of Rats
22%inclusion144 decks665 decks
20%synergy
Gray Merchant of Asphodel
19%inclusion129 decks665 decks
-31%synergy
Throat Slitter
17%inclusion114 decks665 decks
15%synergy
Chittering Witch
17%inclusion112 decks665 decks
12%synergy
Relentless Rats
16%inclusion105 decks665 decks
14%synergy
Locust Miser
15%inclusion103 decks665 decks
14%synergy
Nezumi Informant
14%inclusion92 decks665 decks
7%synergy
Roaming Throne
13%inclusion89 decks665 decks
10%synergy
Chittering Skitterling
13%inclusion89 decks665 decks
12%synergy
Pestilence Rats
13%inclusion88 decks665 decks
11%synergy
Filth
13%inclusion85 decks665 decks
10%synergy
Engine Rat
12%inclusion67 decks560 decks
10%synergy
Nezumi Prowler
12%inclusion79 decks665 decks
11%synergy
Nezumi Graverobber
12%inclusion77 decks665 decks
10%synergy
Undercity Dire Rat
11%inclusion52 decks480 decks
9%synergy
Blood Artist
10%inclusion65 decks665 decks
-22%synergy
Old Flitterfang
9.5%inclusion63 decks665 decks
8%synergy
Gnawing Vermin
9.2%inclusion61 decks665 decks
8%synergy
Zodiac Rat
8.7%inclusion58 decks665 decks
9%synergy
Ruin Rat
8.7%inclusion58 decks665 decks
7%synergy
Rotting Rats
8.3%inclusion55 decks665 decks
5%synergy
Nezumi Cutthroat
7.8%inclusion52 decks665 decks
7%synergy
Adaptive Automaton
7.8%inclusion52 decks665 decks
7%synergy
Twisted Sewer-Witch
7.5%inclusion50 decks665 decks
6%synergy
Ravenous Rats
7.4%inclusion49 decks665 decks
6%synergy
Zulaport Cutthroat
7.1%inclusion47 decks665 decks
-16%synergy
Drainpipe Vermin
6.9%inclusion46 decks665 decks
6%synergy
Sheoldred, the Apocalypse
6.6%inclusion44 decks665 decks
-8%synergy
Instants
Whisper of the Dross
27%inclusion178 decks665 decks
24%synergy
Village Rites
26%inclusion174 decks665 decks
1%synergy
Defile
26%inclusion172 decks665 decks
-10%synergy
Go for the Throat
22%inclusion147 decks665 decks
-1%synergy
Malakir Rebirth
21%inclusion140 decks665 decks
-2%synergy
Tainted Strike
21%inclusion139 decks665 decks
18%synergy
Deadly Dispute
20%inclusion134 decks665 decks
-6%synergy
Cabal Ritual
20%inclusion130 decks665 decks
1%synergy
Culling the Weak
18%inclusion120 decks665 decks
1%synergy
Withering Torment
18%inclusion115 decks640 decks
-13%synergy
Infernal Grasp
16%inclusion108 decks665 decks
-9%synergy
Imp's Mischief
16%inclusion105 decks665 decks
-9%synergy
Grim Affliction
15%inclusion101 decks665 decks
13%synergy
Fell the Profane
15%inclusion99 decks665 decks
-5%synergy
Corrupted Conviction
13%inclusion86 decks665 decks
0%synergy
Tragic Slip
12%inclusion81 decks665 decks
-7%synergy
Snuff Out
11%inclusion75 decks665 decks
-2%synergy
Sudden Spoiling
11%inclusion72 decks665 decks
2%synergy
Rat Out
8.0%inclusion53 decks665 decks
7%synergy
Darkness
7.5%inclusion50 decks665 decks
-3%synergy
Murder
7.5%inclusion50 decks665 decks
-2%synergy
Entomb
7.2%inclusion48 decks665 decks
-5%synergy
Anoint with Affliction
6.6%inclusion44 decks665 decks
6%synergy
Foul-Tongue Shriek
6.5%inclusion43 decks665 decks
5%synergy
Dismember
5.6%inclusion37 decks665 decks
-5%synergy
Hero's Downfall
5.4%inclusion36 decks665 decks
-1%synergy
Withering Boon
5.3%inclusion35 decks665 decks
1%synergy
Sorceries
Phyresis Outbreak
42%inclusion279 decks665 decks
40%synergy
Feed the Swarm
37%inclusion247 decks665 decks
-13%synergy
Drown in Ichor
36%inclusion242 decks665 decks
33%synergy
Kindred Dominance
35%inclusion234 decks665 decks
31%synergy
Patriarch's Bidding
32%inclusion215 decks665 decks
28%synergy
Diabolic Intent
32%inclusion211 decks665 decks
17%synergy
Toxic Deluge
29%inclusion193 decks665 decks
-8%synergy
Damnation
26%inclusion174 decks665 decks
6%synergy
Reanimate
26%inclusion173 decks665 decks
-14%synergy
Grim Tutor
25%inclusion168 decks665 decks
14%synergy
Sign in Blood
22%inclusion148 decks665 decks
-13%synergy
Revenge of the Rats
22%inclusion133 decks604 decks
19%synergy
Bloodline Bidding
21%inclusion59 decks284 decks
17%synergy
Swarmyard Massacre
20%inclusion132 decks661 decks
18%synergy
Plague of Vermin
18%inclusion119 decks665 decks
15%synergy
Night's Whisper
17%inclusion114 decks665 decks
-8%synergy
Echoing Return
15%inclusion102 decks665 decks
12%synergy
Crippling Fear
14%inclusion91 decks665 decks
11%synergy
Diabolic Tutor
12%inclusion82 decks665 decks
-2%synergy
Victimize
12%inclusion77 decks665 decks
-16%synergy
Pact of the Serpent
11%inclusion72 decks665 decks
9%synergy
Torment of Hailfire
11%inclusion71 decks665 decks
-4%synergy
Bubbling Muck
9.5%inclusion63 decks665 decks
-6%synergy
Living Death
9.0%inclusion60 decks665 decks
-1%synergy
Vat Emergence
8.9%inclusion59 decks665 decks
8%synergy
Read the Bones
8.7%inclusion58 decks665 decks
-7%synergy
Agadeem's Awakening
8.3%inclusion55 decks665 decks
1%synergy
Unearth
8.0%inclusion53 decks665 decks
-1%synergy
Insatiable Avarice
7.1%inclusion47 decks665 decks
-4%synergy
Exsanguinate
6.6%inclusion44 decks665 decks
-18%synergy
Spread the Sickness
6.2%inclusion41 decks665 decks
5%synergy
Secret Salvage
6.2%inclusion41 decks665 decks
5%synergy
Gruesome Fate
6.0%inclusion40 decks665 decks
4%synergy
Yawgmoth's Will
5.6%inclusion37 decks665 decks
2%synergy
Forever Young
5.1%inclusion34 decks665 decks
4%synergy
Utility Artifacts
Thrumming Stone
43%inclusion288 decks665 decks
39%synergy
Vanquisher's Banner
34%inclusion229 decks665 decks
31%synergy
Lightning Greaves
33%inclusion220 decks665 decks
-1%synergy
Chronicle of Victory
22%inclusion63 decks284 decks
20%synergy
Whip of Erebos
21%inclusion140 decks665 decks
10%synergy
Coat of Arms
20%inclusion136 decks665 decks
18%synergy
Ashnod's Altar
18%inclusion117 decks665 decks
-2%synergy
Contagion Engine
17%inclusion116 decks665 decks
16%synergy
Swiftfoot Boots
16%inclusion107 decks665 decks
-15%synergy
Thornbite Staff
15%inclusion102 decks665 decks
13%synergy
Door of Destinies
15%inclusion101 decks665 decks
13%synergy
Contagion Clasp
14%inclusion94 decks665 decks
12%synergy
Phyrexian Altar
14%inclusion93 decks665 decks
0%synergy
Eldrazi Monument
14%inclusion91 decks665 decks
12%synergy
The Darkness Crystal
12%inclusion59 decks482 decks
-8%synergy
Banner of Kinship
10%inclusion63 decks605 decks
8%synergy
Sensei's Divining Top
10%inclusion67 decks665 decks
2%synergy
Akroma's Memorial
10%inclusion65 decks665 decks
9%synergy
Sword of Truth and Justice
10%inclusion65 decks665 decks
9%synergy
Grafted Exoskeleton
9.5%inclusion63 decks665 decks
8%synergy
Expedition Map
7.8%inclusion52 decks665 decks
-4%synergy
Urza's Incubator
7.7%inclusion51 decks665 decks
6%synergy
Aetherflux Reservoir
7.2%inclusion48 decks665 decks
-2%synergy
Gathering Stone
7.0%inclusion20 decks284 decks
6%synergy
Enchantments
Phyrexian Arena
42%inclusion280 decks665 decks
3%synergy
Black Market Connections
39%inclusion259 decks665 decks
15%synergy
Grave Pact
38%inclusion256 decks665 decks
19%synergy
Black Market
23%inclusion150 decks665 decks
2%synergy
The Meathook Massacre
21%inclusion141 decks665 decks
4%synergy
Necrogen Communion
20%inclusion133 decks665 decks
18%synergy
Dictate of Erebos
17%inclusion116 decks665 decks
6%synergy
Haunted One
17%inclusion114 decks665 decks
15%synergy
Oversold Cemetery
16%inclusion105 decks665 decks
11%synergy
Phyresis
13%inclusion84 decks665 decks
11%synergy
Exquisite Blood
10%inclusion68 decks665 decks
-3%synergy
Bad Moon
10%inclusion66 decks665 decks
7%synergy
Phyrexian Reclamation
8.6%inclusion57 decks665 decks
-1%synergy
Dark Prophecy
6.9%inclusion46 decks665 decks
3%synergy
Contamination
6.3%inclusion42 decks665 decks
3%synergy
Sanguine Bond
6.3%inclusion42 decks665 decks
-5%synergy
Tribute to Horobi
5.4%inclusion36 decks665 decks
4%synergy
Vampiric Rites
5.3%inclusion35 decks665 decks
-1%synergy
Planeswalkers
Vraska, Betrayal's Sting
34%inclusion226 decks665 decks
31%synergy
Liliana of the Dark Realms
14%inclusion95 decks665 decks
0%synergy
Utility Lands
Cabal Coffers
89%inclusion595 decks665 decks
35%synergy
Urborg, Tomb of Yawgmoth
77%inclusion512 decks665 decks
39%synergy
Nykthos, Shrine to Nyx
66%inclusion439 decks665 decks
36%synergy
Bojuka Bog
51%inclusion337 decks665 decks
4%synergy
Phyrexian Tower
49%inclusion329 decks665 decks
24%synergy
Cabal Stronghold
47%inclusion310 decks665 decks
12%synergy
Karn's Bastion
47%inclusion310 decks665 decks
43%synergy
Three Tree City
46%inclusion307 decks665 decks
42%synergy
Reliquary Tower
37%inclusion246 decks665 decks
7%synergy
Mudflat Village
30%inclusion198 decks665 decks
27%synergy
Rogue's Passage
30%inclusion198 decks665 decks
11%synergy
Witch's Cottage
29%inclusion192 decks665 decks
4%synergy
Shizo, Death's Storehouse
29%inclusion190 decks665 decks
18%synergy
Castle Locthwain
27%inclusion181 decks665 decks
11%synergy
Takenuma, Abandoned Mire
26%inclusion170 decks665 decks
10%synergy
War Room
23%inclusion150 decks665 decks
7%synergy
Crypt of Agadeem
21%inclusion142 decks665 decks
10%synergy
Mortuary Mire
17%inclusion114 decks665 decks
4%synergy
Secret Tunnel
12%inclusion42 decks352 decks
11%synergy
Volrath's Stronghold
12%inclusion78 decks665 decks
8%synergy
Inkmoth Nexus
11%inclusion73 decks665 decks
10%synergy
Urza's Saga
10%inclusion64 decks665 decks
2%synergy
Access Tunnel
10%inclusion64 decks665 decks
7%synergy
Minas Morgul, Dark Fortress
8.9%inclusion59 decks665 decks
6%synergy
Lake of the Dead
7.4%inclusion49 decks665 decks
2%synergy
Mutavault
7.2%inclusion48 decks665 decks
7%synergy
Command Beacon
7.1%inclusion47 decks665 decks
-1%synergy
The Black Gate
6.8%inclusion45 decks665 decks
3%synergy
Temple of the False God
5.6%inclusion37 decks665 decks
-2%synergy
Deserted Temple
5.6%inclusion37 decks665 decks
1%synergy
Vesuva
5.3%inclusion35 decks665 decks
2%synergy
Susur Secundi, Void Altar
5.1%inclusion23 decks453 decks
-2%synergy
Mana Artifacts
Sol Ring
90%inclusion601 decks665 decks
5%synergy
Arcane Signet
54%inclusion359 decks665 decks
-8%synergy
Glistening Sphere
33%inclusion222 decks665 decks
32%synergy
The Soul Stone
30%inclusion129 decks423 decks
15%synergy
Patchwork Banner
21%inclusion141 decks664 decks
17%synergy
Staff of Compleation
19%inclusion128 decks665 decks
18%synergy
Thought Vessel
14%inclusion90 decks665 decks
-11%synergy
Throne of Eldraine
12%inclusion77 decks665 decks
2%synergy
Mind Stone
10%inclusion67 decks665 decks
-18%synergy
Caged Sun
9.0%inclusion60 decks665 decks
-2%synergy
Charcoal Diamond
9.0%inclusion60 decks665 decks
-13%synergy
Lotus Petal
9.0%inclusion60 decks665 decks
2%synergy
Gauntlet of Power
7.4%inclusion49 decks665 decks
4%synergy
Fellwar Stone
7.2%inclusion48 decks665 decks
-7%synergy
Nyx Lotus
6.8%inclusion45 decks665 decks
1%synergy
Mox Diamond
6.5%inclusion43 decks665 decks
3%synergy
Heraldic Banner
6.2%inclusion41 decks665 decks
1%synergy
Lands
Swamp
90%inclusion596 decks665 decks
-6%synergy
Cavern of Souls
53%inclusion354 decks665 decks
46%synergy
Path of Ancestry
28%inclusion188 decks665 decks
23%synergy
Malakir Rebirth
21%inclusion140 decks665 decks
-2%synergy
Myriad Landscape
15%inclusion100 decks665 decks
-10%synergy
Fell the Profane
15%inclusion99 decks665 decks
-5%synergy
Command Tower
13%inclusion86 decks665 decks
7%synergy
Snow-Covered Swamp
12%inclusion83 decks665 decks
6%synergy
Polluted Delta
8.6%inclusion57 decks665 decks
5%synergy
Agadeem's Awakening
8.3%inclusion55 decks665 decks
1%synergy
Bloodstained Mire
8.3%inclusion55 decks665 decks
4%synergy
Verdant Catacombs
7.5%inclusion50 decks665 decks
4%synergy
Big Apple, 3 a.m.
7.2%inclusion16 decks221 decks
5%synergy
Urza's Cave
6.9%inclusion46 decks665 decks
-1%synergy
Marsh Flats
6.9%inclusion46 decks665 decks
3%synergy
Gemstone Caverns
6.2%inclusion41 decks665 decks
2%synergy
Evolving Wilds
5.3%inclusion35 decks665 decks
1%synergy
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