Karumonix, the Rat King (Commander) - Upgraded

Karumonix, the Rat King
Rank #381
290decks
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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Utility Lands
Mana Artifacts
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Emeritus of Woe
2.2%inclusion1 decks45 decks
-5%synergy
Withering Curse
1.7%inclusion1 decks58 decks
0%synergy
High Synergy Cards
Marrow-Gnawer
84%inclusion244 decks290 decks
81%synergy
Piper of the Swarm
81%inclusion235 decks290 decks
74%synergy
Blightbelly Rat
76%inclusion221 decks290 decks
73%synergy
Pack Rat
73%inclusion213 decks290 decks
67%synergy
Ichor Rats
70%inclusion202 decks290 decks
67%synergy
Ogre Slumlord
76%inclusion221 decks290 decks
66%synergy
Lord Skitter, Sewer King
70%inclusion202 decks290 decks
61%synergy
Swarmyard
65%inclusion189 decks290 decks
59%synergy
Infectious Inquiry
62%inclusion179 decks290 decks
59%synergy
Vraska's Fall
57%inclusion166 decks290 decks
54%synergy
Top Cards
Dark Ritual
67%inclusion195 decks290 decks
1%synergy
Bontu's Monument
63%inclusion182 decks290 decks
34%synergy
Jet Medallion
62%inclusion180 decks290 decks
0%synergy
Drown in Ichor
55%inclusion160 decks290 decks
51%synergy
Crypt Rats
54%inclusion158 decks290 decks
50%synergy
Rat Colony
54%inclusion158 decks290 decks
49%synergy
Typhoid Rats
54%inclusion157 decks290 decks
50%synergy
Rancid Rats
52%inclusion150 decks290 decks
49%synergy
Septic Rats
51%inclusion148 decks290 decks
49%synergy
Tangled Colony
50%inclusion146 decks290 decks
47%synergy
Game Changers
Demonic Tutor
32%inclusion92 decks290 decks
4%synergy
Bolas's Citadel
28%inclusion81 decks290 decks
-1%synergy
Vampiric Tutor
25%inclusion72 decks290 decks
4%synergy
Necropotence
5.2%inclusion15 decks290 decks
-9%synergy
Creatures
Lord Skitter's Butcher
49%inclusion142 decks290 decks
46%synergy
Ashcoat of the Shadow Swarm
48%inclusion140 decks290 decks
45%synergy
Ratcatcher
46%inclusion133 decks290 decks
42%synergy
Voracious Vermin
43%inclusion126 decks290 decks
40%synergy
Gnat Miser
43%inclusion125 decks290 decks
40%synergy
Persistent Marshstalker
41%inclusion118 decks290 decks
38%synergy
Stronghold Rats
38%inclusion109 decks290 decks
34%synergy
Burglar Rat
36%inclusion103 decks290 decks
25%synergy
Ink-Eyes, Servant of Oni
33%inclusion96 decks290 decks
30%synergy
Chittering Skitterling
32%inclusion93 decks290 decks
31%synergy
Wave of Rats
31%inclusion89 decks290 decks
29%synergy
Swarm of Rats
30%inclusion88 decks290 decks
28%synergy
Rat King, Pale Piper
28%inclusion28 decks100 decks
24%synergy
Changeling Outcast
27%inclusion78 decks290 decks
22%synergy
Nashi, Moon Sage's Scion
27%inclusion78 decks290 decks
23%synergy
Species Specialist
26%inclusion74 decks290 decks
22%synergy
Ayara, First of Locthwain
26%inclusion74 decks290 decks
0%synergy
Chittering Witch
25%inclusion73 decks290 decks
21%synergy
Throat Slitter
24%inclusion71 decks290 decks
23%synergy
Valley Rotcaller
24%inclusion69 decks290 decks
21%synergy
Crypt Ghast
24%inclusion69 decks290 decks
-24%synergy
Rat King, Verminister
24%inclusion28 decks119 decks
20%synergy
Ruin Rat
23%inclusion68 decks290 decks
22%synergy
Pestilence Rats
23%inclusion67 decks290 decks
21%synergy
Nezumi Prowler
23%inclusion66 decks290 decks
21%synergy
Nezumi Informant
22%inclusion63 decks290 decks
15%synergy
Undercity Dire Rat
21%inclusion51 decks239 decks
19%synergy
Gray Merchant of Asphodel
21%inclusion60 decks290 decks
-30%synergy
Twisted Sewer-Witch
20%inclusion57 decks290 decks
18%synergy
Locust Miser
19%inclusion56 decks290 decks
18%synergy
Engine Rat
19%inclusion53 decks282 decks
17%synergy
Relentless Rats
18%inclusion53 decks290 decks
17%synergy
Gnawing Vermin
18%inclusion51 decks290 decks
16%synergy
Nezumi Cutthroat
17%inclusion50 decks290 decks
16%synergy
Razortooth Rats
17%inclusion49 decks290 decks
16%synergy
Nezumi Graverobber
15%inclusion44 decks290 decks
14%synergy
Drainpipe Vermin
14%inclusion40 decks290 decks
12%synergy
Ravenous Rats
12%inclusion35 decks290 decks
10%synergy
Refurbished Familiar
12%inclusion34 decks290 decks
10%synergy
Yawgmoth, Thran Physician
12%inclusion34 decks290 decks
2%synergy
Old Flitterfang
12%inclusion34 decks290 decks
10%synergy
Rotting Rats
10%inclusion30 decks290 decks
7%synergy
Adaptive Automaton
10%inclusion28 decks290 decks
9%synergy
Filth
10%inclusion28 decks290 decks
7%synergy
Okiba-Gang Shinobi
10%inclusion28 decks290 decks
9%synergy
Bog Rats
9.0%inclusion26 decks290 decks
9%synergy
Mukotai Ambusher
9.0%inclusion26 decks290 decks
8%synergy
Sinuous Vermin
9.0%inclusion26 decks290 decks
8%synergy
Skullsnatcher
9.0%inclusion26 decks290 decks
8%synergy
Nezumi Bladeblesser
8.6%inclusion25 decks290 decks
8%synergy
Instants
Whisper of the Dross
42%inclusion122 decks290 decks
39%synergy
Village Rites
31%inclusion91 decks290 decks
6%synergy
Go for the Throat
31%inclusion89 decks290 decks
8%synergy
Defile
30%inclusion87 decks290 decks
-6%synergy
Grim Affliction
25%inclusion73 decks290 decks
23%synergy
Tainted Strike
24%inclusion70 decks290 decks
21%synergy
Deadly Dispute
22%inclusion65 decks290 decks
-4%synergy
Deadly Rollick
21%inclusion61 decks290 decks
-3%synergy
Rat Out
21%inclusion61 decks290 decks
20%synergy
Infernal Grasp
20%inclusion57 decks290 decks
-6%synergy
Withering Torment
19%inclusion55 decks287 decks
-12%synergy
Corrupted Conviction
16%inclusion47 decks290 decks
4%synergy
Murder
16%inclusion46 decks290 decks
6%synergy
Tragic Slip
16%inclusion46 decks290 decks
-4%synergy
Malakir Rebirth
13%inclusion38 decks290 decks
-10%synergy
Fell the Profane
12%inclusion35 decks290 decks
-7%synergy
Anoint with Affliction
12%inclusion34 decks290 decks
11%synergy
Culling the Weak
12%inclusion34 decks290 decks
-4%synergy
Cabal Ritual
11%inclusion32 decks290 decks
-7%synergy
Hero's Downfall
11%inclusion31 decks290 decks
4%synergy
Consuming Corruption
10%inclusion29 decks290 decks
-6%synergy
Doom Blade
8.6%inclusion25 decks290 decks
1%synergy
Foul-Tongue Shriek
8.6%inclusion25 decks290 decks
7%synergy
Sudden Spoiling
7.6%inclusion22 decks290 decks
-1%synergy
Raise the Draugr
6.9%inclusion20 decks290 decks
6%synergy
Imp's Mischief
6.6%inclusion19 decks290 decks
-18%synergy
Virulent Wound
6.2%inclusion18 decks290 decks
6%synergy
Baleful Mastery
6.2%inclusion18 decks290 decks
-2%synergy
Sheoldred's Edict
5.9%inclusion17 decks290 decks
-9%synergy
Gravepurge
5.5%inclusion16 decks290 decks
4%synergy
Darkness
5.2%inclusion15 decks290 decks
-5%synergy
Sorceries
Phyresis Outbreak
42%inclusion122 decks290 decks
40%synergy
Feed the Swarm
37%inclusion108 decks290 decks
-13%synergy
Revenge of the Rats
34%inclusion97 decks287 decks
31%synergy
Kindred Dominance
33%inclusion97 decks290 decks
29%synergy
Crippling Fear
26%inclusion76 decks290 decks
23%synergy
Sign in Blood
26%inclusion74 decks290 decks
-10%synergy
Patriarch's Bidding
25%inclusion72 decks290 decks
21%synergy
Diabolic Tutor
20%inclusion59 decks290 decks
6%synergy
Bloodline Bidding
20%inclusion26 decks129 decks
16%synergy
Swarmyard Massacre
20%inclusion57 decks290 decks
17%synergy
Night's Whisper
20%inclusion57 decks290 decks
-5%synergy
Diabolic Intent
19%inclusion54 decks290 decks
4%synergy
Vat Emergence
18%inclusion53 decks290 decks
17%synergy
Echoing Return
16%inclusion46 decks290 decks
13%synergy
Toxic Deluge
16%inclusion45 decks290 decks
-21%synergy
Spread the Sickness
14%inclusion41 decks290 decks
13%synergy
Reanimate
13%inclusion39 decks290 decks
-26%synergy
Damnation
13%inclusion38 decks290 decks
-7%synergy
Grim Tutor
12%inclusion36 decks290 decks
1%synergy
Victimize
12%inclusion34 decks290 decks
-15%synergy
Read the Bones
12%inclusion34 decks290 decks
-5%synergy
Plague of Vermin
12%inclusion34 decks290 decks
9%synergy
Unearth
11%inclusion33 decks290 decks
3%synergy
Feed the Infection
10%inclusion28 decks290 decks
9%synergy
Bubbling Muck
9.0%inclusion26 decks290 decks
-7%synergy
Mutilate
8.6%inclusion25 decks290 decks
-8%synergy
Geth's Summons
8.6%inclusion25 decks290 decks
8%synergy
Gruesome Fate
8.6%inclusion25 decks290 decks
6%synergy
Profane Tutor
6.9%inclusion20 decks290 decks
3%synergy
Pact of the Serpent
6.9%inclusion20 decks290 decks
5%synergy
Living Death
6.9%inclusion20 decks290 decks
-3%synergy
Caress of Phyrexia
6.6%inclusion19 decks290 decks
6%synergy
Insatiable Avarice
6.6%inclusion19 decks290 decks
-5%synergy
In Garruk's Wake
5.9%inclusion17 decks290 decks
2%synergy
Haunting Voyage
5.5%inclusion16 decks290 decks
4%synergy
Fell
5.5%inclusion16 decks290 decks
2%synergy
Lab Rats
5.5%inclusion16 decks290 decks
5%synergy
Utility Artifacts
Herald's Horn
48%inclusion140 decks290 decks
43%synergy
Skullclamp
38%inclusion109 decks290 decks
15%synergy
Vanquisher's Banner
29%inclusion85 decks290 decks
25%synergy
Thrumming Stone
28%inclusion82 decks290 decks
24%synergy
Contagion Clasp
22%inclusion65 decks290 decks
20%synergy
Swiftfoot Boots
19%inclusion54 decks290 decks
-13%synergy
Coat of Arms
17%inclusion49 decks290 decks
14%synergy
Lightning Greaves
17%inclusion49 decks290 decks
-17%synergy
Door of Destinies
17%inclusion48 decks290 decks
14%synergy
Whip of Erebos
14%inclusion40 decks290 decks
3%synergy
Contagion Engine
13%inclusion38 decks290 decks
11%synergy
Chronicle of Victory
12%inclusion16 decks130 decks
9%synergy
Icon of Ancestry
11%inclusion33 decks290 decks
10%synergy
Banner of Kinship
10%inclusion30 decks287 decks
8%synergy
Ashnod's Altar
10%inclusion29 decks290 decks
-10%synergy
Grafted Exoskeleton
10%inclusion28 decks290 decks
9%synergy
The Darkness Crystal
7.5%inclusion18 decks239 decks
-13%synergy
Eldrazi Monument
6.9%inclusion20 decks290 decks
5%synergy
Thornbite Staff
6.9%inclusion20 decks290 decks
4%synergy
Wayfarer's Bauble
6.6%inclusion19 decks290 decks
-9%synergy
Sword of Truth and Justice
6.6%inclusion19 decks290 decks
6%synergy
Expedition Map
6.6%inclusion19 decks290 decks
-5%synergy
Sword of the Squeak
5.9%inclusion17 decks290 decks
5%synergy
Enchantments
Cover of Darkness
41%inclusion118 decks290 decks
38%synergy
Phyrexian Arena
39%inclusion113 decks290 decks
-1%synergy
Necrogen Communion
33%inclusion95 decks290 decks
31%synergy
Grave Pact
20%inclusion59 decks290 decks
1%synergy
Phyresis
19%inclusion55 decks290 decks
17%synergy
Black Market
19%inclusion54 decks290 decks
-2%synergy
Bad Moon
17%inclusion49 decks290 decks
14%synergy
Haunted One
17%inclusion48 decks290 decks
14%synergy
Black Market Connections
16%inclusion46 decks290 decks
-8%synergy
Oversold Cemetery
14%inclusion41 decks290 decks
9%synergy
Vampiric Rites
9.3%inclusion27 decks290 decks
3%synergy
Dictate of Erebos
7.9%inclusion23 decks290 decks
-3%synergy
Tribute to Horobi
7.9%inclusion23 decks290 decks
7%synergy
Phyrexian Reclamation
7.6%inclusion22 decks290 decks
-2%synergy
Lord Skitter's Blessing
7.2%inclusion21 decks290 decks
7%synergy
Intimidation
6.6%inclusion19 decks290 decks
6%synergy
The Meathook Massacre
5.9%inclusion17 decks290 decks
-12%synergy
Glistening Oil
5.2%inclusion15 decks290 decks
4%synergy
Planeswalkers
Vraska, Betrayal's Sting
35%inclusion101 decks290 decks
32%synergy
Liliana of the Dark Realms
12%inclusion35 decks290 decks
-2%synergy
Utility Lands
Cabal Coffers
55%inclusion159 decks290 decks
0%synergy
Karn's Bastion
50%inclusion144 decks290 decks
46%synergy
Bojuka Bog
49%inclusion142 decks290 decks
2%synergy
Mudflat Village
44%inclusion129 decks290 decks
42%synergy
Rogue's Passage
39%inclusion112 decks290 decks
20%synergy
Urborg, Tomb of Yawgmoth
35%inclusion102 decks290 decks
-2%synergy
Three Tree City
31%inclusion90 decks290 decks
26%synergy
Cabal Stronghold
30%inclusion88 decks290 decks
-4%synergy
Witch's Cottage
29%inclusion84 decks290 decks
4%synergy
Nykthos, Shrine to Nyx
23%inclusion67 decks290 decks
-7%synergy
Reliquary Tower
22%inclusion65 decks290 decks
-8%synergy
Phyrexian Tower
21%inclusion62 decks290 decks
-4%synergy
Mortuary Mire
21%inclusion60 decks290 decks
8%synergy
Castle Locthwain
14%inclusion42 decks290 decks
-2%synergy
Access Tunnel
14%inclusion40 decks290 decks
11%synergy
War Room
12%inclusion36 decks290 decks
-4%synergy
Crypt of Agadeem
11%inclusion33 decks290 decks
0%synergy
Secret Tunnel
11%inclusion17 decks160 decks
9%synergy
Shizo, Death's Storehouse
10%inclusion28 decks290 decks
0%synergy
Takenuma, Abandoned Mire
8.6%inclusion25 decks290 decks
-7%synergy
Temple of the False God
8.6%inclusion25 decks290 decks
1%synergy
Barren Moor
7.6%inclusion22 decks290 decks
-2%synergy
The Black Gate
5.9%inclusion17 decks290 decks
2%synergy
Mutavault
5.9%inclusion17 decks290 decks
5%synergy
Minas Morgul, Dark Fortress
5.9%inclusion17 decks290 decks
3%synergy
Mana Artifacts
Sol Ring
84%inclusion243 decks290 decks
-2%synergy
Arcane Signet
49%inclusion142 decks290 decks
-13%synergy
Glistening Sphere
35%inclusion101 decks290 decks
34%synergy
Patchwork Banner
25%inclusion72 decks290 decks
20%synergy
Staff of Compleation
20%inclusion58 decks290 decks
18%synergy
Charcoal Diamond
16%inclusion47 decks290 decks
-6%synergy
Heraldic Banner
16%inclusion47 decks290 decks
11%synergy
Mind Stone
14%inclusion42 decks290 decks
-14%synergy
Phyrexian Atlas
7.9%inclusion23 decks290 decks
8%synergy
The Soul Stone
7.7%inclusion16 decks209 decks
-7%synergy
Caged Sun
7.6%inclusion22 decks290 decks
-4%synergy
Gauntlet of Power
6.9%inclusion20 decks290 decks
4%synergy
Thought Vessel
5.9%inclusion17 decks290 decks
-20%synergy
Throne of Eldraine
5.5%inclusion16 decks290 decks
-4%synergy
Nyx Lotus
5.5%inclusion16 decks290 decks
-1%synergy
Lands
Swamp
99%inclusion286 decks290 decks
3%synergy
Path of Ancestry
35%inclusion101 decks290 decks
30%synergy
Cavern of Souls
22%inclusion63 decks290 decks
15%synergy
Myriad Landscape
13%inclusion39 decks290 decks
-12%synergy
Malakir Rebirth
13%inclusion38 decks290 decks
-10%synergy
Fell the Profane
12%inclusion35 decks290 decks
-7%synergy
Command Tower
10%inclusion30 decks290 decks
5%synergy
Big Apple, 3 a.m.
8.0%inclusion8 decks100 decks
6%synergy
Evolving Wilds
6.2%inclusion18 decks290 decks
2%synergy
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