Karumonix, the Rat King (Commander) - Expensive

Karumonix, the Rat King
Rank #384
642decks
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
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Rat King, Verminister
38%inclusion63 decks166 decks
35%synergy
Rat King, Pale Piper
22%inclusion28 decks126 decks
18%synergy
Splinter's Technique
4.8%inclusion8 decks166 decks
3%synergy
Big Apple, 3 a.m.
4.8%inclusion6 decks126 decks
3%synergy
Decorum Dissertation
3.2%inclusion1 decks31 decks
0%synergy
High Synergy Cards
Marrow-Gnawer
91%inclusion586 decks642 decks
88%synergy
Piper of the Swarm
80%inclusion516 decks642 decks
73%synergy
Ashcoat of the Shadow Swarm
74%inclusion473 decks642 decks
70%synergy
Swarmyard
74%inclusion476 decks642 decks
68%synergy
Rat Colony
72%inclusion460 decks642 decks
66%synergy
Pack Rat
71%inclusion459 decks642 decks
65%synergy
Ogre Slumlord
68%inclusion438 decks642 decks
58%synergy
Lord Skitter, Sewer King
63%inclusion402 decks642 decks
54%synergy
Ichor Rats
55%inclusion356 decks642 decks
52%synergy
Blightbelly Rat
55%inclusion356 decks642 decks
52%synergy
Top Cards
Jet Medallion
81%inclusion518 decks642 decks
19%synergy
Dark Ritual
77%inclusion493 decks642 decks
10%synergy
Bontu's Monument
60%inclusion385 decks642 decks
32%synergy
Herald's Horn
53%inclusion338 decks642 decks
47%synergy
Skullclamp
50%inclusion324 decks642 decks
28%synergy
Thrumming Stone
49%inclusion316 decks642 decks
45%synergy
Deadly Rollick
48%inclusion310 decks642 decks
24%synergy
Infectious Inquiry
44%inclusion280 decks642 decks
41%synergy
Vraska's Fall
43%inclusion275 decks642 decks
39%synergy
Cover of Darkness
43%inclusion273 decks642 decks
40%synergy
Game Changers
Demonic Tutor
76%inclusion486 decks642 decks
48%synergy
Vampiric Tutor
65%inclusion419 decks642 decks
44%synergy
Bolas's Citadel
38%inclusion244 decks642 decks
9%synergy
Imperial Seal
23%inclusion145 decks642 decks
16%synergy
Ancient Tomb
19%inclusion123 decks642 decks
8%synergy
Necropotence
17%inclusion111 decks642 decks
3%synergy
The One Ring
13%inclusion82 decks642 decks
3%synergy
Chrome Mox
12%inclusion75 decks642 decks
6%synergy
Mana Vault
8.6%inclusion55 decks642 decks
2%synergy
Opposition Agent
6.7%inclusion43 decks642 decks
-3%synergy
Creatures
Ratcatcher
42%inclusion270 decks642 decks
39%synergy
Crypt Rats
38%inclusion243 decks642 decks
33%synergy
Ayara, First of Locthwain
36%inclusion230 decks642 decks
10%synergy
Crypt Ghast
34%inclusion220 decks642 decks
-13%synergy
Septic Rats
32%inclusion207 decks642 decks
30%synergy
Tangled Colony
32%inclusion205 decks642 decks
29%synergy
Ink-Eyes, Servant of Oni
32%inclusion205 decks642 decks
29%synergy
Typhoid Rats
32%inclusion204 decks642 decks
28%synergy
Rancid Rats
31%inclusion198 decks642 decks
28%synergy
Lord Skitter's Butcher
30%inclusion191 decks642 decks
26%synergy
Gnat Miser
29%inclusion188 decks642 decks
26%synergy
Species Specialist
28%inclusion181 decks642 decks
25%synergy
Nashi, Moon Sage's Scion
27%inclusion173 decks642 decks
23%synergy
Persistent Marshstalker
24%inclusion145 decks593 decks
21%synergy
Stronghold Rats
24%inclusion153 decks642 decks
20%synergy
Burglar Rat
24%inclusion152 decks642 decks
13%synergy
Valley Rotcaller
24%inclusion140 decks594 decks
21%synergy
Changeling Outcast
23%inclusion150 decks642 decks
18%synergy
Swarm of Rats
22%inclusion142 decks642 decks
20%synergy
Gray Merchant of Asphodel
21%inclusion132 decks642 decks
-30%synergy
Yawgmoth, Thran Physician
20%inclusion130 decks642 decks
10%synergy
Wave of Rats
19%inclusion125 decks642 decks
18%synergy
Voracious Vermin
19%inclusion123 decks642 decks
16%synergy
Relentless Rats
18%inclusion115 decks642 decks
16%synergy
Throat Slitter
17%inclusion112 decks642 decks
16%synergy
Chittering Witch
15%inclusion99 decks642 decks
11%synergy
Roaming Throne
15%inclusion94 decks642 decks
12%synergy
Locust Miser
15%inclusion94 decks642 decks
13%synergy
Filth
14%inclusion92 decks642 decks
12%synergy
Nezumi Informant
12%inclusion78 decks642 decks
5%synergy
Pestilence Rats
11%inclusion72 decks642 decks
9%synergy
Engine Rat
11%inclusion54 decks484 decks
9%synergy
Chittering Skitterling
11%inclusion70 decks642 decks
10%synergy
Nezumi Graverobber
10%inclusion67 decks642 decks
9%synergy
Nezumi Prowler
10%inclusion64 decks642 decks
9%synergy
Undercity Dire Rat
10%inclusion39 decks404 decks
8%synergy
Old Flitterfang
9.0%inclusion58 decks642 decks
8%synergy
Blood Artist
8.7%inclusion56 decks642 decks
-23%synergy
Rotting Rats
8.3%inclusion53 decks642 decks
5%synergy
Ruin Rat
7.9%inclusion51 decks642 decks
7%synergy
Twisted Sewer-Witch
7.5%inclusion48 decks642 decks
6%synergy
Zodiac Rat
7.5%inclusion48 decks642 decks
7%synergy
Gnawing Vermin
7.3%inclusion47 decks642 decks
6%synergy
Adaptive Automaton
7.3%inclusion47 decks642 decks
6%synergy
Nezumi Cutthroat
6.9%inclusion44 decks642 decks
6%synergy
Zulaport Cutthroat
6.9%inclusion44 decks642 decks
-16%synergy
Ravenous Rats
6.5%inclusion42 decks642 decks
5%synergy
Ruthless Radrat
6.4%inclusion41 decks642 decks
6%synergy
K'rrik, Son of Yawgmoth
6.4%inclusion41 decks642 decks
-13%synergy
Okiba-Gang Shinobi
6.1%inclusion39 decks642 decks
5%synergy
Instants
Village Rites
25%inclusion161 decks642 decks
0%synergy
Defile
25%inclusion160 decks642 decks
-12%synergy
Whisper of the Dross
25%inclusion159 decks642 decks
22%synergy
Go for the Throat
21%inclusion137 decks642 decks
-2%synergy
Malakir Rebirth
20%inclusion131 decks642 decks
-2%synergy
Deadly Dispute
20%inclusion128 decks642 decks
-6%synergy
Withering Torment
19%inclusion110 decks565 decks
-12%synergy
Cabal Ritual
19%inclusion122 decks642 decks
1%synergy
Tainted Strike
19%inclusion120 decks642 decks
16%synergy
Culling the Weak
18%inclusion115 decks642 decks
2%synergy
Infernal Grasp
18%inclusion114 decks642 decks
-7%synergy
Imp's Mischief
15%inclusion96 decks642 decks
-10%synergy
Fell the Profane
15%inclusion91 decks621 decks
-4%synergy
Grim Affliction
13%inclusion83 decks642 decks
11%synergy
Tragic Slip
12%inclusion76 decks642 decks
-8%synergy
Corrupted Conviction
12%inclusion75 decks642 decks
-1%synergy
Sudden Spoiling
12%inclusion75 decks642 decks
3%synergy
Snuff Out
11%inclusion71 decks642 decks
-2%synergy
Murder
7.6%inclusion49 decks642 decks
-3%synergy
Foul-Tongue Shriek
7.2%inclusion46 decks642 decks
5%synergy
Entomb
7.0%inclusion45 decks642 decks
-5%synergy
Rat Out
6.7%inclusion43 decks642 decks
5%synergy
Dismember
6.5%inclusion42 decks642 decks
-4%synergy
Darkness
6.4%inclusion41 decks642 decks
-4%synergy
Hero's Downfall
6.2%inclusion40 decks642 decks
-1%synergy
Anoint with Affliction
6.2%inclusion40 decks642 decks
6%synergy
Baleful Mastery
5.8%inclusion37 decks642 decks
-3%synergy
Bitter Triumph
5.1%inclusion33 decks642 decks
-5%synergy
Sorceries
Phyresis Outbreak
38%inclusion246 decks642 decks
37%synergy
Feed the Swarm
38%inclusion242 decks642 decks
-13%synergy
Kindred Dominance
35%inclusion223 decks642 decks
30%synergy
Patriarch's Bidding
34%inclusion219 decks642 decks
30%synergy
Drown in Ichor
34%inclusion218 decks642 decks
30%synergy
Diabolic Intent
31%inclusion200 decks642 decks
16%synergy
Toxic Deluge
29%inclusion188 decks642 decks
-7%synergy
Grim Tutor
26%inclusion168 decks642 decks
15%synergy
Damnation
26%inclusion167 decks642 decks
5%synergy
Reanimate
23%inclusion147 decks642 decks
-17%synergy
Bloodline Bidding
23%inclusion43 decks189 decks
18%synergy
Sign in Blood
22%inclusion143 decks642 decks
-13%synergy
Revenge of the Rats
20%inclusion107 decks533 decks
17%synergy
Swarmyard Massacre
20%inclusion115 decks587 decks
17%synergy
Echoing Return
18%inclusion114 decks642 decks
15%synergy
Plague of Vermin
17%inclusion111 decks642 decks
15%synergy
Night's Whisper
17%inclusion107 decks642 decks
-8%synergy
Crippling Fear
14%inclusion88 decks642 decks
11%synergy
Diabolic Tutor
12%inclusion79 decks642 decks
-2%synergy
Pact of the Serpent
11%inclusion73 decks642 decks
10%synergy
Torment of Hailfire
11%inclusion68 decks642 decks
-5%synergy
Read the Bones
10%inclusion64 decks642 decks
-7%synergy
Victimize
10%inclusion63 decks642 decks
-17%synergy
Living Death
10%inclusion63 decks642 decks
0%synergy
Bubbling Muck
10%inclusion62 decks642 decks
-6%synergy
Vat Emergence
8.3%inclusion53 decks642 decks
7%synergy
Unearth
7.8%inclusion50 decks642 decks
-1%synergy
Insatiable Avarice
7.6%inclusion49 decks642 decks
-4%synergy
Agadeem's Awakening
7.3%inclusion47 decks642 decks
0%synergy
Secret Salvage
6.5%inclusion42 decks642 decks
5%synergy
Spread the Sickness
5.9%inclusion38 decks642 decks
5%synergy
Haunting Voyage
5.9%inclusion38 decks642 decks
5%synergy
Mutilate
5.5%inclusion35 decks642 decks
-12%synergy
Exsanguinate
5.5%inclusion35 decks642 decks
-19%synergy
Blasphemous Edict
5.4%inclusion29 decks533 decks
-11%synergy
Utility Artifacts
Vanquisher's Banner
36%inclusion228 decks642 decks
32%synergy
Lightning Greaves
30%inclusion191 decks642 decks
-4%synergy
Chronicle of Victory
23%inclusion44 decks189 decks
20%synergy
Whip of Erebos
21%inclusion136 decks642 decks
10%synergy
Coat of Arms
21%inclusion135 decks642 decks
18%synergy
Ashnod's Altar
17%inclusion107 decks642 decks
-3%synergy
Contagion Engine
17%inclusion106 decks642 decks
15%synergy
Eldrazi Monument
16%inclusion102 decks642 decks
14%synergy
Door of Destinies
16%inclusion100 decks642 decks
13%synergy
Thornbite Staff
15%inclusion94 decks642 decks
12%synergy
Contagion Clasp
13%inclusion86 decks642 decks
11%synergy
Phyrexian Altar
13%inclusion81 decks642 decks
-1%synergy
Swiftfoot Boots
13%inclusion81 decks642 decks
-19%synergy
The Darkness Crystal
12%inclusion49 decks406 decks
-8%synergy
Akroma's Memorial
11%inclusion70 decks642 decks
10%synergy
Banner of Kinship
11%inclusion57 decks534 decks
8%synergy
Sensei's Divining Top
10%inclusion64 decks642 decks
2%synergy
Sword of Truth and Justice
9.3%inclusion60 decks642 decks
9%synergy
Grafted Exoskeleton
8.7%inclusion56 decks642 decks
8%synergy
Gathering Stone
7.9%inclusion15 decks189 decks
6%synergy
Expedition Map
7.8%inclusion50 decks642 decks
-4%synergy
Aetherflux Reservoir
7.3%inclusion47 decks642 decks
-2%synergy
Urza's Incubator
7.2%inclusion46 decks642 decks
5%synergy
Enchantments
Phyrexian Arena
43%inclusion273 decks642 decks
3%synergy
Black Market Connections
39%inclusion250 decks642 decks
15%synergy
Grave Pact
36%inclusion233 decks642 decks
17%synergy
Black Market
22%inclusion144 decks642 decks
1%synergy
The Meathook Massacre
21%inclusion136 decks642 decks
4%synergy
Dictate of Erebos
19%inclusion120 decks642 decks
8%synergy
Haunted One
19%inclusion119 decks642 decks
16%synergy
Necrogen Communion
17%inclusion110 decks642 decks
15%synergy
Oversold Cemetery
14%inclusion93 decks642 decks
9%synergy
Phyresis
11%inclusion71 decks642 decks
9%synergy
Bad Moon
10%inclusion62 decks642 decks
6%synergy
Exquisite Blood
8.9%inclusion57 decks642 decks
-4%synergy
Phyrexian Reclamation
7.6%inclusion49 decks642 decks
-2%synergy
Contamination
6.9%inclusion44 decks642 decks
3%synergy
Dark Prophecy
6.1%inclusion39 decks642 decks
2%synergy
Sanguine Bond
5.9%inclusion38 decks642 decks
-6%synergy
No Mercy
5.8%inclusion37 decks642 decks
-1%synergy
Planeswalkers
Vraska, Betrayal's Sting
30%inclusion192 decks642 decks
27%synergy
Liliana of the Dark Realms
13%inclusion85 decks642 decks
-1%synergy
Utility Lands
Cabal Coffers
88%inclusion563 decks642 decks
33%synergy
Urborg, Tomb of Yawgmoth
75%inclusion479 decks642 decks
37%synergy
Nykthos, Shrine to Nyx
67%inclusion430 decks642 decks
37%synergy
Bojuka Bog
51%inclusion325 decks642 decks
4%synergy
Phyrexian Tower
49%inclusion315 decks642 decks
24%synergy
Cabal Stronghold
47%inclusion303 decks642 decks
13%synergy
Three Tree City
44%inclusion260 decks594 decks
39%synergy
Karn's Bastion
43%inclusion279 decks642 decks
40%synergy
Reliquary Tower
38%inclusion244 decks642 decks
8%synergy
Rogue's Passage
30%inclusion191 decks642 decks
11%synergy
Shizo, Death's Storehouse
28%inclusion182 decks642 decks
18%synergy
Mudflat Village
27%inclusion164 decks600 decks
25%synergy
Castle Locthwain
26%inclusion170 decks642 decks
9%synergy
Witch's Cottage
25%inclusion163 decks642 decks
1%synergy
Takenuma, Abandoned Mire
24%inclusion154 decks642 decks
8%synergy
Crypt of Agadeem
20%inclusion128 decks642 decks
9%synergy
War Room
19%inclusion125 decks642 decks
3%synergy
Mortuary Mire
15%inclusion96 decks642 decks
2%synergy
Volrath's Stronghold
12%inclusion77 decks642 decks
8%synergy
Inkmoth Nexus
11%inclusion71 decks642 decks
10%synergy
Secret Tunnel
11%inclusion29 decks263 decks
10%synergy
Urza's Saga
10%inclusion61 decks642 decks
2%synergy
Lake of the Dead
7.8%inclusion50 decks642 decks
3%synergy
Access Tunnel
7.3%inclusion47 decks642 decks
4%synergy
Minas Morgul, Dark Fortress
7.0%inclusion45 decks642 decks
4%synergy
Command Beacon
6.9%inclusion44 decks642 decks
-1%synergy
The Black Gate
6.7%inclusion43 decks642 decks
3%synergy
Mutavault
6.7%inclusion43 decks642 decks
6%synergy
Deserted Temple
6.5%inclusion42 decks642 decks
2%synergy
Vesuva
6.1%inclusion39 decks642 decks
3%synergy
Temple of the False God
6.1%inclusion39 decks642 decks
-2%synergy
Susur Secundi, Void Altar
5.1%inclusion19 decks369 decks
-2%synergy
Mana Artifacts
Sol Ring
89%inclusion571 decks642 decks
3%synergy
Arcane Signet
55%inclusion352 decks642 decks
-7%synergy
Glistening Sphere
33%inclusion212 decks642 decks
32%synergy
The Soul Stone
30%inclusion100 decks338 decks
15%synergy
Patchwork Banner
21%inclusion123 decks591 decks
16%synergy
Staff of Compleation
17%inclusion112 decks642 decks
16%synergy
Thought Vessel
14%inclusion87 decks642 decks
-12%synergy
Throne of Eldraine
12%inclusion79 decks642 decks
2%synergy
Mind Stone
10%inclusion63 decks642 decks
-19%synergy
Caged Sun
10%inclusion61 decks642 decks
-2%synergy
Lotus Petal
8.9%inclusion57 decks642 decks
1%synergy
Charcoal Diamond
8.6%inclusion55 decks642 decks
-14%synergy
Gauntlet of Power
7.9%inclusion51 decks642 decks
5%synergy
Nyx Lotus
7.5%inclusion48 decks642 decks
1%synergy
Fellwar Stone
7.3%inclusion47 decks642 decks
-7%synergy
Mox Diamond
6.5%inclusion42 decks642 decks
3%synergy
Heraldic Banner
5.6%inclusion36 decks642 decks
0%synergy
Mox Amber
5.5%inclusion35 decks642 decks
1%synergy
Jeweled Lotus
5.1%inclusion33 decks642 decks
4%synergy
Lands
Swamp
89%inclusion570 decks642 decks
-6%synergy
Cavern of Souls
51%inclusion327 decks642 decks
44%synergy
Path of Ancestry
29%inclusion186 decks642 decks
24%synergy
Malakir Rebirth
20%inclusion131 decks642 decks
-2%synergy
Myriad Landscape
15%inclusion97 decks642 decks
-11%synergy
Fell the Profane
15%inclusion91 decks621 decks
-4%synergy
Snow-Covered Swamp
13%inclusion83 decks642 decks
6%synergy
Command Tower
12%inclusion80 decks642 decks
7%synergy
Polluted Delta
8.6%inclusion55 decks642 decks
5%synergy
Bloodstained Mire
8.6%inclusion55 decks642 decks
5%synergy
Verdant Catacombs
7.6%inclusion49 decks642 decks
4%synergy
Marsh Flats
7.6%inclusion49 decks642 decks
4%synergy
Agadeem's Awakening
7.3%inclusion47 decks642 decks
0%synergy
Urza's Cave
6.1%inclusion39 decks638 decks
-2%synergy
Gemstone Caverns
5.9%inclusion38 decks642 decks
2%synergy
Evolving Wilds
5.6%inclusion36 decks642 decks
2%synergy
Prismatic Vista
5.3%inclusion34 decks642 decks
3%synergy
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