Karumonix, the Rat King (Commander) - Expensive

Karumonix, the Rat King
Rank #385
640decks
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Background image for Building Rat Typal With Marrow-Gnawer
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 Artifacts
Enchantments
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Utility Lands
Mana Artifacts
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Rat King, Verminister
37%inclusion59 decks158 decks
34%synergy
Rat King, Pale Piper
22%inclusion26 decks118 decks
18%synergy
Big Apple, 3 a.m.
5.9%inclusion7 decks118 decks
4%synergy
Splinter's Technique
5.7%inclusion9 decks158 decks
4%synergy
Shredder's Technique
2.5%inclusion3 decks121 decks
-1%synergy
High Synergy Cards
Marrow-Gnawer
91%inclusion585 decks640 decks
88%synergy
Piper of the Swarm
81%inclusion517 decks640 decks
74%synergy
Ashcoat of the Shadow Swarm
74%inclusion472 decks640 decks
70%synergy
Swarmyard
74%inclusion472 decks640 decks
68%synergy
Pack Rat
72%inclusion461 decks640 decks
66%synergy
Rat Colony
71%inclusion457 decks640 decks
66%synergy
Ogre Slumlord
68%inclusion437 decks640 decks
58%synergy
Lord Skitter, Sewer King
63%inclusion401 decks640 decks
54%synergy
Ichor Rats
56%inclusion360 decks640 decks
53%synergy
Blightbelly Rat
57%inclusion362 decks640 decks
53%synergy
Top Cards
Jet Medallion
81%inclusion519 decks640 decks
19%synergy
Dark Ritual
76%inclusion489 decks640 decks
10%synergy
Bontu's Monument
60%inclusion386 decks640 decks
32%synergy
Herald's Horn
53%inclusion336 decks640 decks
47%synergy
Skullclamp
50%inclusion323 decks640 decks
29%synergy
Thrumming Stone
49%inclusion312 decks640 decks
45%synergy
Deadly Rollick
49%inclusion311 decks640 decks
24%synergy
Infectious Inquiry
44%inclusion283 decks640 decks
41%synergy
Vraska's Fall
44%inclusion280 decks640 decks
40%synergy
Phyrexian Arena
43%inclusion276 decks640 decks
3%synergy
Game Changers
Demonic Tutor
77%inclusion493 decks640 decks
50%synergy
Vampiric Tutor
67%inclusion428 decks640 decks
46%synergy
Bolas's Citadel
37%inclusion239 decks640 decks
9%synergy
Imperial Seal
23%inclusion145 decks640 decks
16%synergy
Ancient Tomb
20%inclusion126 decks640 decks
8%synergy
Necropotence
17%inclusion111 decks640 decks
3%synergy
The One Ring
13%inclusion83 decks640 decks
4%synergy
Chrome Mox
12%inclusion74 decks640 decks
6%synergy
Mana Vault
8.4%inclusion54 decks640 decks
2%synergy
Opposition Agent
6.9%inclusion44 decks640 decks
-3%synergy
Creatures
Ratcatcher
42%inclusion268 decks640 decks
38%synergy
Crypt Rats
38%inclusion245 decks640 decks
34%synergy
Ayara, First of Locthwain
35%inclusion225 decks640 decks
10%synergy
Crypt Ghast
34%inclusion216 decks640 decks
-14%synergy
Septic Rats
33%inclusion210 decks640 decks
31%synergy
Tangled Colony
32%inclusion207 decks640 decks
29%synergy
Typhoid Rats
32%inclusion205 decks640 decks
28%synergy
Ink-Eyes, Servant of Oni
32%inclusion204 decks640 decks
29%synergy
Rancid Rats
31%inclusion199 decks640 decks
29%synergy
Lord Skitter's Butcher
30%inclusion192 decks640 decks
27%synergy
Gnat Miser
29%inclusion188 decks640 decks
26%synergy
Species Specialist
28%inclusion178 decks640 decks
24%synergy
Nashi, Moon Sage's Scion
27%inclusion175 decks640 decks
23%synergy
Persistent Marshstalker
24%inclusion143 decks586 decks
21%synergy
Stronghold Rats
24%inclusion155 decks640 decks
20%synergy
Burglar Rat
24%inclusion153 decks640 decks
13%synergy
Changeling Outcast
24%inclusion153 decks640 decks
19%synergy
Valley Rotcaller
23%inclusion135 decks587 decks
20%synergy
Swarm of Rats
23%inclusion144 decks640 decks
20%synergy
Gray Merchant of Asphodel
20%inclusion130 decks640 decks
-31%synergy
Yawgmoth, Thran Physician
20%inclusion130 decks640 decks
10%synergy
Wave of Rats
20%inclusion128 decks640 decks
18%synergy
Voracious Vermin
19%inclusion124 decks640 decks
16%synergy
Relentless Rats
18%inclusion115 decks640 decks
16%synergy
Throat Slitter
18%inclusion113 decks640 decks
16%synergy
Chittering Witch
16%inclusion100 decks640 decks
11%synergy
Roaming Throne
15%inclusion93 decks640 decks
12%synergy
Filth
14%inclusion92 decks640 decks
12%synergy
Locust Miser
14%inclusion92 decks640 decks
13%synergy
Nezumi Informant
13%inclusion81 decks640 decks
6%synergy
Pestilence Rats
12%inclusion74 decks640 decks
10%synergy
Engine Rat
12%inclusion55 decks477 decks
10%synergy
Chittering Skitterling
11%inclusion71 decks640 decks
10%synergy
Nezumi Graverobber
11%inclusion70 decks640 decks
9%synergy
Nezumi Prowler
10%inclusion67 decks640 decks
9%synergy
Undercity Dire Rat
9.3%inclusion37 decks397 decks
7%synergy
Old Flitterfang
9.1%inclusion58 decks640 decks
8%synergy
Rotting Rats
8.6%inclusion55 decks640 decks
5%synergy
Blood Artist
8.4%inclusion54 decks640 decks
-23%synergy
Ruin Rat
8.0%inclusion51 decks640 decks
7%synergy
Zodiac Rat
7.7%inclusion49 decks640 decks
7%synergy
Nezumi Cutthroat
7.3%inclusion47 decks640 decks
7%synergy
Twisted Sewer-Witch
7.3%inclusion47 decks640 decks
6%synergy
Gnawing Vermin
7.2%inclusion46 decks640 decks
6%synergy
Adaptive Automaton
7.0%inclusion45 decks640 decks
6%synergy
Ravenous Rats
6.6%inclusion42 decks640 decks
5%synergy
Ruthless Radrat
6.6%inclusion42 decks640 decks
6%synergy
Zulaport Cutthroat
6.6%inclusion42 decks640 decks
-17%synergy
K'rrik, Son of Yawgmoth
6.3%inclusion40 decks640 decks
-13%synergy
Sheoldred, the Apocalypse
6.1%inclusion39 decks640 decks
-9%synergy
Instants
Village Rites
25%inclusion159 decks640 decks
0%synergy
Whisper of the Dross
25%inclusion159 decks640 decks
22%synergy
Defile
25%inclusion159 decks640 decks
-12%synergy
Go for the Throat
21%inclusion136 decks640 decks
-2%synergy
Malakir Rebirth
20%inclusion128 decks640 decks
-3%synergy
Deadly Dispute
20%inclusion126 decks640 decks
-6%synergy
Withering Torment
20%inclusion110 decks559 decks
-12%synergy
Tainted Strike
20%inclusion125 decks640 decks
17%synergy
Cabal Ritual
19%inclusion120 decks640 decks
1%synergy
Infernal Grasp
18%inclusion117 decks640 decks
-7%synergy
Culling the Weak
18%inclusion113 decks640 decks
2%synergy
Imp's Mischief
15%inclusion94 decks640 decks
-10%synergy
Fell the Profane
14%inclusion87 decks615 decks
-5%synergy
Grim Affliction
13%inclusion85 decks640 decks
11%synergy
Tragic Slip
12%inclusion75 decks640 decks
-8%synergy
Corrupted Conviction
11%inclusion73 decks640 decks
-1%synergy
Sudden Spoiling
11%inclusion73 decks640 decks
2%synergy
Snuff Out
11%inclusion70 decks640 decks
-2%synergy
Murder
7.5%inclusion48 decks640 decks
-3%synergy
Entomb
7.0%inclusion45 decks640 decks
-5%synergy
Foul-Tongue Shriek
7.0%inclusion45 decks640 decks
5%synergy
Rat Out
6.7%inclusion43 decks640 decks
5%synergy
Dismember
6.6%inclusion42 decks640 decks
-4%synergy
Anoint with Affliction
6.4%inclusion41 decks640 decks
6%synergy
Darkness
6.1%inclusion39 decks640 decks
-4%synergy
Hero's Downfall
5.9%inclusion38 decks640 decks
-1%synergy
Baleful Mastery
5.5%inclusion35 decks640 decks
-3%synergy
Bitter Triumph
5.3%inclusion34 decks640 decks
-4%synergy
Sorceries
Phyresis Outbreak
39%inclusion249 decks640 decks
37%synergy
Feed the Swarm
38%inclusion242 decks640 decks
-13%synergy
Kindred Dominance
35%inclusion222 decks640 decks
30%synergy
Drown in Ichor
34%inclusion219 decks640 decks
30%synergy
Patriarch's Bidding
34%inclusion217 decks640 decks
30%synergy
Diabolic Intent
32%inclusion202 decks640 decks
17%synergy
Toxic Deluge
29%inclusion187 decks640 decks
-8%synergy
Grim Tutor
27%inclusion172 decks640 decks
15%synergy
Damnation
26%inclusion167 decks640 decks
6%synergy
Reanimate
23%inclusion148 decks640 decks
-17%synergy
Bloodline Bidding
23%inclusion42 decks182 decks
18%synergy
Sign in Blood
23%inclusion145 decks640 decks
-13%synergy
Revenge of the Rats
20%inclusion105 decks528 decks
17%synergy
Swarmyard Massacre
19%inclusion112 decks580 decks
17%synergy
Echoing Return
18%inclusion114 decks640 decks
15%synergy
Night's Whisper
18%inclusion112 decks640 decks
-7%synergy
Plague of Vermin
17%inclusion109 decks640 decks
15%synergy
Crippling Fear
13%inclusion86 decks640 decks
10%synergy
Diabolic Tutor
12%inclusion79 decks640 decks
-2%synergy
Pact of the Serpent
11%inclusion71 decks640 decks
9%synergy
Torment of Hailfire
11%inclusion68 decks640 decks
-5%synergy
Read the Bones
10%inclusion66 decks640 decks
-7%synergy
Victimize
10%inclusion63 decks640 decks
-17%synergy
Living Death
10%inclusion62 decks640 decks
0%synergy
Bubbling Muck
10%inclusion61 decks640 decks
-6%synergy
Vat Emergence
8.4%inclusion54 decks640 decks
7%synergy
Unearth
7.8%inclusion50 decks640 decks
-1%synergy
Insatiable Avarice
7.7%inclusion49 decks640 decks
-4%synergy
Agadeem's Awakening
7.3%inclusion47 decks640 decks
0%synergy
Secret Salvage
6.7%inclusion43 decks640 decks
5%synergy
Spread the Sickness
6.1%inclusion39 decks640 decks
5%synergy
Haunting Voyage
5.8%inclusion37 decks640 decks
5%synergy
Mutilate
5.5%inclusion35 decks640 decks
-12%synergy
Forever Young
5.3%inclusion34 decks640 decks
4%synergy
Exsanguinate
5.3%inclusion34 decks640 decks
-19%synergy
Blasphemous Edict
5.3%inclusion28 decks528 decks
-11%synergy
Utility Artifacts
Vanquisher's Banner
35%inclusion223 decks640 decks
31%synergy
Lightning Greaves
30%inclusion189 decks640 decks
-4%synergy
Chronicle of Victory
23%inclusion42 decks182 decks
20%synergy
Whip of Erebos
21%inclusion135 decks640 decks
10%synergy
Coat of Arms
21%inclusion135 decks640 decks
18%synergy
Contagion Engine
17%inclusion110 decks640 decks
15%synergy
Ashnod's Altar
16%inclusion105 decks640 decks
-3%synergy
Eldrazi Monument
16%inclusion103 decks640 decks
14%synergy
Door of Destinies
15%inclusion97 decks640 decks
13%synergy
Thornbite Staff
15%inclusion96 decks640 decks
12%synergy
Contagion Clasp
14%inclusion88 decks640 decks
11%synergy
Phyrexian Altar
13%inclusion81 decks640 decks
-1%synergy
Swiftfoot Boots
12%inclusion79 decks640 decks
-19%synergy
The Darkness Crystal
12%inclusion49 decks399 decks
-8%synergy
Banner of Kinship
11%inclusion58 decks529 decks
9%synergy
Akroma's Memorial
11%inclusion70 decks640 decks
10%synergy
Sensei's Divining Top
10%inclusion63 decks640 decks
2%synergy
Sword of Truth and Justice
9.4%inclusion60 decks640 decks
9%synergy
Grafted Exoskeleton
9.1%inclusion58 decks640 decks
8%synergy
Expedition Map
8.0%inclusion51 decks640 decks
-4%synergy
Aetherflux Reservoir
7.3%inclusion47 decks640 decks
-2%synergy
Gathering Stone
7.1%inclusion13 decks182 decks
6%synergy
Urza's Incubator
7.0%inclusion45 decks640 decks
5%synergy
Wishclaw Talisman
5.0%inclusion32 decks640 decks
-2%synergy
Enchantments
Cover of Darkness
42%inclusion271 decks640 decks
39%synergy
Black Market Connections
39%inclusion249 decks640 decks
15%synergy
Grave Pact
36%inclusion232 decks640 decks
17%synergy
Black Market
22%inclusion142 decks640 decks
1%synergy
The Meathook Massacre
21%inclusion137 decks640 decks
4%synergy
Dictate of Erebos
18%inclusion116 decks640 decks
7%synergy
Haunted One
18%inclusion115 decks640 decks
15%synergy
Necrogen Communion
17%inclusion107 decks640 decks
15%synergy
Oversold Cemetery
15%inclusion93 decks640 decks
9%synergy
Phyresis
11%inclusion73 decks640 decks
9%synergy
Bad Moon
10%inclusion63 decks640 decks
7%synergy
Exquisite Blood
9.2%inclusion59 decks640 decks
-4%synergy
Phyrexian Reclamation
7.8%inclusion50 decks640 decks
-2%synergy
Contamination
6.9%inclusion44 decks640 decks
3%synergy
No Mercy
6.1%inclusion39 decks640 decks
-1%synergy
Sanguine Bond
5.9%inclusion38 decks640 decks
-6%synergy
Dark Prophecy
5.8%inclusion37 decks640 decks
2%synergy
Planeswalkers
Vraska, Betrayal's Sting
31%inclusion198 decks640 decks
28%synergy
Liliana of the Dark Realms
13%inclusion86 decks640 decks
-1%synergy
Utility Lands
Cabal Coffers
88%inclusion562 decks640 decks
33%synergy
Urborg, Tomb of Yawgmoth
75%inclusion479 decks640 decks
37%synergy
Nykthos, Shrine to Nyx
67%inclusion428 decks640 decks
37%synergy
Bojuka Bog
50%inclusion323 decks640 decks
4%synergy
Phyrexian Tower
48%inclusion308 decks640 decks
23%synergy
Cabal Stronghold
47%inclusion300 decks640 decks
12%synergy
Karn's Bastion
44%inclusion280 decks640 decks
40%synergy
Three Tree City
43%inclusion254 decks587 decks
39%synergy
Reliquary Tower
38%inclusion244 decks640 decks
8%synergy
Rogue's Passage
30%inclusion191 decks640 decks
11%synergy
Shizo, Death's Storehouse
28%inclusion180 decks640 decks
18%synergy
Mudflat Village
27%inclusion163 decks593 decks
25%synergy
Castle Locthwain
26%inclusion169 decks640 decks
9%synergy
Witch's Cottage
25%inclusion162 decks640 decks
1%synergy
Takenuma, Abandoned Mire
24%inclusion151 decks640 decks
8%synergy
Crypt of Agadeem
20%inclusion125 decks640 decks
8%synergy
War Room
19%inclusion123 decks640 decks
3%synergy
Mortuary Mire
15%inclusion94 decks640 decks
2%synergy
Volrath's Stronghold
12%inclusion74 decks640 decks
8%synergy
Secret Tunnel
11%inclusion29 decks255 decks
10%synergy
Inkmoth Nexus
11%inclusion72 decks640 decks
10%synergy
Urza's Saga
10%inclusion61 decks640 decks
2%synergy
Lake of the Dead
8.1%inclusion52 decks640 decks
3%synergy
Access Tunnel
7.8%inclusion50 decks640 decks
5%synergy
Mutavault
7.0%inclusion45 decks640 decks
6%synergy
The Black Gate
6.9%inclusion44 decks640 decks
3%synergy
Minas Morgul, Dark Fortress
6.7%inclusion43 decks640 decks
4%synergy
Command Beacon
6.3%inclusion40 decks640 decks
-2%synergy
Vesuva
6.1%inclusion39 decks640 decks
3%synergy
Deserted Temple
5.9%inclusion38 decks640 decks
2%synergy
Temple of the False God
5.8%inclusion37 decks640 decks
-2%synergy
Strip Mine
5.0%inclusion32 decks640 decks
2%synergy
Mana Artifacts
Sol Ring
89%inclusion569 decks640 decks
3%synergy
Arcane Signet
54%inclusion347 decks640 decks
-8%synergy
Glistening Sphere
33%inclusion210 decks640 decks
32%synergy
The Soul Stone
29%inclusion97 decks330 decks
15%synergy
Patchwork Banner
20%inclusion118 decks584 decks
16%synergy
Staff of Compleation
18%inclusion112 decks640 decks
16%synergy
Thought Vessel
14%inclusion87 decks640 decks
-12%synergy
Throne of Eldraine
12%inclusion77 decks640 decks
2%synergy
Caged Sun
10%inclusion62 decks640 decks
-2%synergy
Mind Stone
10%inclusion62 decks640 decks
-19%synergy
Lotus Petal
8.8%inclusion56 decks640 decks
1%synergy
Charcoal Diamond
8.6%inclusion55 decks640 decks
-14%synergy
Gauntlet of Power
7.5%inclusion48 decks640 decks
4%synergy
Nyx Lotus
7.3%inclusion47 decks640 decks
1%synergy
Fellwar Stone
7.2%inclusion46 decks640 decks
-7%synergy
Mox Diamond
6.6%inclusion42 decks640 decks
3%synergy
Heraldic Banner
5.6%inclusion36 decks640 decks
0%synergy
Mox Amber
5.5%inclusion35 decks640 decks
1%synergy
Jeweled Lotus
5.3%inclusion34 decks640 decks
4%synergy
Lands
Swamp
89%inclusion571 decks640 decks
-6%synergy
Cavern of Souls
51%inclusion324 decks640 decks
44%synergy
Path of Ancestry
29%inclusion183 decks640 decks
23%synergy
Malakir Rebirth
20%inclusion128 decks640 decks
-3%synergy
Myriad Landscape
15%inclusion98 decks640 decks
-10%synergy
Fell the Profane
14%inclusion87 decks615 decks
-5%synergy
Snow-Covered Swamp
12%inclusion79 decks640 decks
6%synergy
Command Tower
12%inclusion77 decks640 decks
6%synergy
Polluted Delta
8.3%inclusion53 decks640 decks
5%synergy
Bloodstained Mire
8.1%inclusion52 decks640 decks
4%synergy
Verdant Catacombs
7.5%inclusion48 decks640 decks
4%synergy
Agadeem's Awakening
7.3%inclusion47 decks640 decks
0%synergy
Marsh Flats
7.3%inclusion47 decks640 decks
4%synergy
Urza's Cave
6.2%inclusion39 decks632 decks
-2%synergy
Gemstone Caverns
5.9%inclusion38 decks640 decks
2%synergy
Evolving Wilds
5.3%inclusion34 decks640 decks
2%synergy
Prismatic Vista
5.2%inclusion33 decks640 decks
3%synergy
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