Karumonix, the Rat King (Commander) - Upgraded

Karumonix, the Rat King
Rank #412
381decks
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
Lands
Back to Top
Stir Up Trouble
1.4%inclusion1 decks71 decks
1%synergy
My Precious
1.4%inclusion2 decks145 decks
-2%synergy
Orcrist, Goblin-cleaver
1.3%inclusion1 decks80 decks
1%synergy
High Synergy Cards
Marrow-Gnawer
84%inclusion320 decks381 decks
81%synergy
Piper of the Swarm
81%inclusion310 decks381 decks
75%synergy
Blightbelly Rat
76%inclusion291 decks381 decks
73%synergy
Pack Rat
75%inclusion286 decks381 decks
69%synergy
Ichor Rats
70%inclusion266 decks381 decks
67%synergy
Ogre Slumlord
75%inclusion285 decks381 decks
65%synergy
Lord Skitter, Sewer King
69%inclusion263 decks381 decks
61%synergy
Swarmyard
64%inclusion245 decks381 decks
59%synergy
Infectious Inquiry
61%inclusion232 decks381 decks
58%synergy
Vraska's Fall
57%inclusion219 decks381 decks
54%synergy
Top Cards
Dark Ritual
69%inclusion262 decks381 decks
1%synergy
Jet Medallion
64%inclusion244 decks381 decks
2%synergy
Bontu's Monument
62%inclusion238 decks381 decks
34%synergy
Rat Colony
59%inclusion223 decks381 decks
53%synergy
Crypt Rats
56%inclusion213 decks381 decks
52%synergy
Drown in Ichor
56%inclusion213 decks381 decks
52%synergy
Typhoid Rats
56%inclusion212 decks381 decks
52%synergy
Septic Rats
53%inclusion202 decks381 decks
51%synergy
Tangled Colony
52%inclusion200 decks381 decks
50%synergy
Ashcoat of the Shadow Swarm
52%inclusion199 decks381 decks
49%synergy
Game Changers
Demonic Tutor
36%inclusion138 decks381 decks
9%synergy
Vampiric Tutor
27%inclusion102 decks381 decks
6%synergy
Bolas's Citadel
27%inclusion101 decks381 decks
-1%synergy
Necropotence
5.2%inclusion20 decks381 decks
-9%synergy
Creatures
Rancid Rats
52%inclusion198 decks381 decks
50%synergy
Lord Skitter's Butcher
51%inclusion195 decks381 decks
48%synergy
Ratcatcher
46%inclusion174 decks381 decks
42%synergy
Persistent Marshstalker
44%inclusion168 decks381 decks
41%synergy
Voracious Vermin
44%inclusion167 decks381 decks
41%synergy
Gnat Miser
40%inclusion153 decks381 decks
38%synergy
Stronghold Rats
39%inclusion147 decks381 decks
35%synergy
Burglar Rat
38%inclusion143 decks381 decks
27%synergy
Ink-Eyes, Servant of Oni
34%inclusion130 decks381 decks
31%synergy
Rat King, Verminister
32%inclusion73 decks226 decks
29%synergy
Swarm of Rats
32%inclusion122 decks381 decks
30%synergy
Chittering Skitterling
31%inclusion120 decks381 decks
31%synergy
Wave of Rats
31%inclusion117 decks381 decks
29%synergy
Rat King, Pale Piper
30%inclusion63 decks211 decks
26%synergy
Changeling Outcast
27%inclusion101 decks381 decks
22%synergy
Ayara, First of Locthwain
26%inclusion98 decks381 decks
1%synergy
Chittering Witch
25%inclusion97 decks381 decks
21%synergy
Ruin Rat
25%inclusion96 decks381 decks
24%synergy
Nashi, Moon Sage's Scion
25%inclusion95 decks381 decks
21%synergy
Species Specialist
24%inclusion93 decks381 decks
21%synergy
Valley Rotcaller
24%inclusion93 decks381 decks
22%synergy
Pestilence Rats
24%inclusion92 decks381 decks
22%synergy
Throat Slitter
23%inclusion87 decks381 decks
21%synergy
Crypt Ghast
22%inclusion85 decks381 decks
-24%synergy
Engine Rat
22%inclusion83 decks376 decks
20%synergy
Nezumi Prowler
21%inclusion81 decks381 decks
20%synergy
Nezumi Informant
21%inclusion79 decks381 decks
15%synergy
Undercity Dire Rat
19%inclusion66 decks339 decks
18%synergy
Twisted Sewer-Witch
19%inclusion73 decks381 decks
18%synergy
Relentless Rats
19%inclusion72 decks381 decks
17%synergy
Gray Merchant of Asphodel
19%inclusion72 decks381 decks
-31%synergy
Locust Miser
19%inclusion72 decks381 decks
17%synergy
Nezumi Cutthroat
18%inclusion68 decks381 decks
17%synergy
Gnawing Vermin
18%inclusion67 decks381 decks
16%synergy
Razortooth Rats
16%inclusion61 decks381 decks
15%synergy
Drainpipe Vermin
15%inclusion59 decks381 decks
14%synergy
Nezumi Graverobber
14%inclusion55 decks381 decks
13%synergy
Ravenous Rats
13%inclusion51 decks381 decks
12%synergy
Old Flitterfang
11%inclusion43 decks381 decks
10%synergy
Yawgmoth, Thran Physician
11%inclusion42 decks381 decks
1%synergy
Refurbished Familiar
11%inclusion41 decks381 decks
9%synergy
Rotting Rats
10%inclusion40 decks381 decks
8%synergy
Okiba-Gang Shinobi
9.4%inclusion36 decks381 decks
9%synergy
Mukotai Ambusher
9.2%inclusion35 decks381 decks
8%synergy
Nezumi Bone-Reader
8.9%inclusion34 decks381 decks
8%synergy
Adaptive Automaton
8.7%inclusion33 decks381 decks
8%synergy
Nezumi Bladeblesser
8.4%inclusion32 decks381 decks
8%synergy
Filth
8.1%inclusion31 decks381 decks
6%synergy
Sinuous Vermin
8.1%inclusion31 decks381 decks
8%synergy
Elephant-Rat
7.9%inclusion24 decks302 decks
8%synergy
Instants
Whisper of the Dross
43%inclusion164 decks381 decks
41%synergy
Village Rites
34%inclusion130 decks381 decks
8%synergy
Defile
32%inclusion122 decks381 decks
-3%synergy
Go for the Throat
29%inclusion110 decks381 decks
6%synergy
Grim Affliction
25%inclusion96 decks381 decks
23%synergy
Deadly Dispute
25%inclusion94 decks381 decks
-3%synergy
Tainted Strike
24%inclusion90 decks381 decks
21%synergy
Rat Out
22%inclusion85 decks381 decks
21%synergy
Infernal Grasp
20%inclusion78 decks381 decks
-5%synergy
Deadly Rollick
20%inclusion77 decks381 decks
-6%synergy
Withering Torment
19%inclusion71 decks381 decks
-13%synergy
Murder
16%inclusion60 decks381 decks
6%synergy
Culling the Weak
15%inclusion59 decks381 decks
-3%synergy
Corrupted Conviction
15%inclusion58 decks381 decks
3%synergy
Tragic Slip
15%inclusion58 decks381 decks
-3%synergy
Malakir Rebirth
15%inclusion56 decks381 decks
-9%synergy
Fell the Profane
13%inclusion50 decks381 decks
-7%synergy
Anoint with Affliction
12%inclusion46 decks381 decks
12%synergy
Cabal Ritual
12%inclusion45 decks381 decks
-7%synergy
Hero's Downfall
10%inclusion40 decks381 decks
4%synergy
Doom Blade
9.4%inclusion36 decks381 decks
3%synergy
Consuming Corruption
8.7%inclusion33 decks381 decks
-7%synergy
Raise the Draugr
7.6%inclusion29 decks381 decks
7%synergy
Virulent Wound
7.3%inclusion28 decks381 decks
7%synergy
Sudden Spoiling
7.3%inclusion28 decks381 decks
-1%synergy
Imp's Mischief
7.1%inclusion27 decks381 decks
-19%synergy
Foul-Tongue Shriek
7.1%inclusion27 decks381 decks
5%synergy
Sheoldred's Edict
6.0%inclusion23 decks381 decks
-9%synergy
Gravepurge
5.5%inclusion21 decks381 decks
4%synergy
Snuff Out
5.2%inclusion20 decks381 decks
-9%synergy
Sorceries
Phyresis Outbreak
42%inclusion161 decks381 decks
41%synergy
Feed the Swarm
38%inclusion145 decks381 decks
-12%synergy
Revenge of the Rats
34%inclusion131 decks381 decks
31%synergy
Kindred Dominance
34%inclusion128 decks381 decks
29%synergy
Crippling Fear
26%inclusion99 decks381 decks
23%synergy
Sign in Blood
25%inclusion97 decks381 decks
-9%synergy
Patriarch's Bidding
24%inclusion91 decks381 decks
20%synergy
Bloodline Bidding
21%inclusion49 decks235 decks
17%synergy
Vat Emergence
21%inclusion79 decks381 decks
19%synergy
Diabolic Intent
19%inclusion71 decks381 decks
3%synergy
Night's Whisper
19%inclusion71 decks381 decks
-7%synergy
Diabolic Tutor
18%inclusion69 decks381 decks
5%synergy
Swarmyard Massacre
18%inclusion69 decks381 decks
16%synergy
Toxic Deluge
16%inclusion61 decks381 decks
-21%synergy
Spread the Sickness
14%inclusion54 decks381 decks
13%synergy
Echoing Return
14%inclusion53 decks381 decks
11%synergy
Damnation
13%inclusion49 decks381 decks
-7%synergy
Reanimate
13%inclusion48 decks381 decks
-28%synergy
Plague of Vermin
12%inclusion47 decks381 decks
10%synergy
Victimize
12%inclusion46 decks381 decks
-16%synergy
Grim Tutor
12%inclusion46 decks381 decks
1%synergy
Read the Bones
11%inclusion42 decks381 decks
-5%synergy
Unearth
11%inclusion41 decks381 decks
2%synergy
Bubbling Muck
10%inclusion37 decks381 decks
-6%synergy
Feed the Infection
9.4%inclusion36 decks381 decks
9%synergy
Geth's Summons
7.9%inclusion30 decks381 decks
7%synergy
Gruesome Fate
7.6%inclusion29 decks381 decks
6%synergy
Pact of the Serpent
7.6%inclusion29 decks381 decks
6%synergy
Caress of Phyrexia
7.1%inclusion27 decks381 decks
6%synergy
Mutilate
6.8%inclusion26 decks381 decks
-8%synergy
Exsanguinate
6.8%inclusion26 decks381 decks
-18%synergy
Living Death
6.3%inclusion24 decks381 decks
-4%synergy
Haunting Voyage
5.8%inclusion22 decks381 decks
5%synergy
Profane Tutor
5.5%inclusion21 decks381 decks
2%synergy
In Garruk's Wake
5.2%inclusion20 decks381 decks
2%synergy
Lab Rats
5.2%inclusion20 decks381 decks
5%synergy
Secret Salvage
5.2%inclusion20 decks381 decks
4%synergy
Utility Artifacts
Herald's Horn
47%inclusion179 decks381 decks
41%synergy
Skullclamp
39%inclusion150 decks381 decks
17%synergy
Vanquisher's Banner
28%inclusion107 decks381 decks
24%synergy
Thrumming Stone
26%inclusion100 decks381 decks
22%synergy
Contagion Clasp
24%inclusion90 decks381 decks
22%synergy
Lightning Greaves
18%inclusion69 decks381 decks
-16%synergy
Coat of Arms
17%inclusion66 decks381 decks
15%synergy
Swiftfoot Boots
17%inclusion63 decks381 decks
-15%synergy
Door of Destinies
16%inclusion61 decks381 decks
14%synergy
Contagion Engine
14%inclusion53 decks381 decks
12%synergy
Whip of Erebos
14%inclusion53 decks381 decks
3%synergy
Chronicle of Victory
13%inclusion30 decks236 decks
10%synergy
Icon of Ancestry
12%inclusion45 decks381 decks
11%synergy
Banner of Kinship
12%inclusion45 decks381 decks
10%synergy
Ashnod's Altar
10%inclusion38 decks381 decks
-10%synergy
Thornbite Staff
8.9%inclusion34 decks381 decks
6%synergy
The Darkness Crystal
8.3%inclusion28 decks339 decks
-12%synergy
Grafted Exoskeleton
7.6%inclusion29 decks381 decks
7%synergy
Sword of Truth and Justice
6.3%inclusion24 decks381 decks
6%synergy
Expedition Map
5.8%inclusion22 decks381 decks
-5%synergy
Eldrazi Monument
5.8%inclusion22 decks381 decks
4%synergy
Wayfarer's Bauble
5.5%inclusion21 decks381 decks
-9%synergy
Urza's Incubator
5.5%inclusion21 decks381 decks
3%synergy
Gathering Stone
5.1%inclusion12 decks235 decks
4%synergy
Enchantments
Cover of Darkness
41%inclusion155 decks381 decks
38%synergy
Phyrexian Arena
38%inclusion144 decks381 decks
-1%synergy
Necrogen Communion
33%inclusion124 decks381 decks
31%synergy
Grave Pact
20%inclusion76 decks381 decks
0%synergy
Phyresis
19%inclusion73 decks381 decks
17%synergy
Black Market Connections
19%inclusion71 decks381 decks
-7%synergy
Black Market
17%inclusion66 decks381 decks
-3%synergy
Bad Moon
17%inclusion66 decks381 decks
14%synergy
Haunted One
17%inclusion63 decks381 decks
14%synergy
Oversold Cemetery
14%inclusion53 decks381 decks
9%synergy
Dictate of Erebos
8.4%inclusion32 decks381 decks
-3%synergy
Vampiric Rites
7.6%inclusion29 decks381 decks
2%synergy
Tribute to Horobi
7.6%inclusion29 decks381 decks
7%synergy
Lord Skitter's Blessing
7.6%inclusion29 decks381 decks
7%synergy
Intimidation
6.8%inclusion26 decks381 decks
6%synergy
The Meathook Massacre
6.6%inclusion25 decks381 decks
-11%synergy
Phyrexian Reclamation
6.6%inclusion25 decks381 decks
-3%synergy
Dark Prophecy
6.0%inclusion23 decks381 decks
2%synergy
Glistening Oil
5.8%inclusion22 decks381 decks
5%synergy
Planeswalkers
Vraska, Betrayal's Sting
35%inclusion132 decks381 decks
32%synergy
Liliana of the Dark Realms
12%inclusion44 decks381 decks
-2%synergy
Utility Lands
Cabal Coffers
54%inclusion206 decks381 decks
-1%synergy
Karn's Bastion
50%inclusion192 decks381 decks
47%synergy
Bojuka Bog
49%inclusion186 decks381 decks
1%synergy
Mudflat Village
42%inclusion159 decks381 decks
39%synergy
Rogue's Passage
39%inclusion150 decks381 decks
20%synergy
Urborg, Tomb of Yawgmoth
33%inclusion127 decks381 decks
-4%synergy
Witch's Cottage
32%inclusion123 decks381 decks
8%synergy
Three Tree City
30%inclusion114 decks381 decks
25%synergy
Cabal Stronghold
29%inclusion112 decks381 decks
-4%synergy
Nykthos, Shrine to Nyx
24%inclusion93 decks381 decks
-5%synergy
Reliquary Tower
23%inclusion89 decks381 decks
-6%synergy
Phyrexian Tower
22%inclusion84 decks381 decks
-5%synergy
Mortuary Mire
21%inclusion79 decks381 decks
8%synergy
Castle Locthwain
15%inclusion58 decks381 decks
-1%synergy
Access Tunnel
14%inclusion54 decks381 decks
11%synergy
Crypt of Agadeem
13%inclusion50 decks381 decks
2%synergy
War Room
12%inclusion47 decks381 decks
-4%synergy
Shizo, Death's Storehouse
10%inclusion37 decks381 decks
-1%synergy
Takenuma, Abandoned Mire
9.2%inclusion35 decks381 decks
-7%synergy
Temple of the False God
8.7%inclusion33 decks381 decks
1%synergy
Secret Tunnel
8.3%inclusion22 decks265 decks
7%synergy
Barren Moor
7.6%inclusion29 decks381 decks
-2%synergy
Minas Morgul, Dark Fortress
6.0%inclusion23 decks381 decks
3%synergy
Inkmoth Nexus
5.2%inclusion20 decks381 decks
4%synergy
Mana Artifacts
Sol Ring
83%inclusion315 decks381 decks
-3%synergy
Arcane Signet
49%inclusion188 decks381 decks
-12%synergy
Glistening Sphere
34%inclusion129 decks381 decks
33%synergy
Patchwork Banner
26%inclusion99 decks381 decks
21%synergy
Staff of Compleation
18%inclusion69 decks381 decks
16%synergy
Charcoal Diamond
17%inclusion63 decks381 decks
-5%synergy
Heraldic Banner
14%inclusion54 decks381 decks
9%synergy
Mind Stone
13%inclusion51 decks381 decks
-14%synergy
The Soul Stone
8.7%inclusion27 decks311 decks
-7%synergy
Thought Vessel
8.4%inclusion32 decks381 decks
-16%synergy
Phyrexian Atlas
7.6%inclusion29 decks381 decks
7%synergy
Caged Sun
7.1%inclusion27 decks381 decks
-3%synergy
Gauntlet of Power
6.3%inclusion24 decks381 decks
3%synergy
Throne of Eldraine
5.2%inclusion20 decks381 decks
-4%synergy
Lands
Swamp
98%inclusion374 decks381 decks
3%synergy
Path of Ancestry
34%inclusion128 decks381 decks
29%synergy
Cavern of Souls
21%inclusion79 decks381 decks
14%synergy
Myriad Landscape
15%inclusion57 decks381 decks
-9%synergy
Malakir Rebirth
15%inclusion56 decks381 decks
-9%synergy
Fell the Profane
13%inclusion50 decks381 decks
-7%synergy
Big Apple, 3 a.m.
12%inclusion25 decks211 decks
10%synergy
Command Tower
11%inclusion41 decks381 decks
5%synergy
Evolving Wilds
7.1%inclusion27 decks381 decks
3%synergy
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