Karumonix, the Rat King (Commander)

Karumonix, the Rat King
Rank #384
6,422decks
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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Rat King, Verminister
24%inclusion353 decks1.45K decks
21%synergy
Rat King, Pale Piper
24%inclusion242 decks1.03K decks
19%synergy
Big Apple, 3 a.m.
8.7%inclusion90 decks1.03K decks
7%synergy
Tunnel Rats
3.8%inclusion37 decks980 decks
3%synergy
Splinter's Technique
2.6%inclusion37 decks1.45K decks
1%synergy
High Synergy Cards
Piper of the Swarm
81%inclusion5.21K decks6.42K decks
74%synergy
Blightbelly Rat
77%inclusion4.95K decks6.42K decks
74%synergy
Marrow-Gnawer
73%inclusion4.72K decks6.42K decks
70%synergy
Pack Rat
74%inclusion4.73K decks6.42K decks
68%synergy
Ogre Slumlord
76%inclusion4.85K decks6.42K decks
65%synergy
Ichor Rats
67%inclusion4.32K decks6.42K decks
64%synergy
Lord Skitter, Sewer King
68%inclusion4.36K decks6.42K decks
60%synergy
Infectious Inquiry
61%inclusion3.89K decks6.42K decks
58%synergy
Typhoid Rats
61%inclusion3.89K decks6.42K decks
57%synergy
Vraska's Fall
59%inclusion3.78K decks6.42K decks
55%synergy
Top Cards
Dark Ritual
57%inclusion3.63K decks6.42K decks
-10%synergy
Rancid Rats
56%inclusion3.60K decks6.42K decks
54%synergy
Rat Colony
56%inclusion3.58K decks6.42K decks
50%synergy
Lord Skitter's Butcher
56%inclusion3.58K decks6.42K decks
52%synergy
Crypt Rats
54%inclusion3.48K decks6.42K decks
50%synergy
Tangled Colony
54%inclusion3.48K decks6.42K decks
51%synergy
Drown in Ichor
54%inclusion3.47K decks6.42K decks
50%synergy
Bontu's Monument
53%inclusion3.43K decks6.42K decks
25%synergy
Septic Rats
53%inclusion3.42K decks6.42K decks
51%synergy
Jet Medallion
52%inclusion3.32K decks6.42K decks
-10%synergy
Game Changers
Demonic Tutor
21%inclusion1.34K decks6.42K decks
-6%synergy
Vampiric Tutor
15%inclusion967 decks6.42K decks
-6%synergy
Bolas's Citadel
15%inclusion964 decks6.42K decks
-14%synergy
Creatures
Burglar Rat
51%inclusion3.24K decks6.42K decks
40%synergy
Voracious Vermin
49%inclusion3.12K decks6.42K decks
46%synergy
Persistent Marshstalker
44%inclusion2.60K decks5.88K decks
41%synergy
Stronghold Rats
42%inclusion2.73K decks6.42K decks
39%synergy
Gnat Miser
41%inclusion2.66K decks6.42K decks
38%synergy
Ratcatcher
40%inclusion2.57K decks6.42K decks
37%synergy
Ashcoat of the Shadow Swarm
39%inclusion2.50K decks6.42K decks
36%synergy
Chittering Skitterling
39%inclusion2.49K decks6.42K decks
38%synergy
Wave of Rats
35%inclusion2.28K decks6.42K decks
34%synergy
Swarm of Rats
35%inclusion2.24K decks6.42K decks
32%synergy
Pestilence Rats
32%inclusion2.04K decks6.42K decks
30%synergy
Chittering Witch
31%inclusion2K decks6.42K decks
27%synergy
Ink-Eyes, Servant of Oni
29%inclusion1.89K decks6.42K decks
26%synergy
Nezumi Prowler
29%inclusion1.85K decks6.42K decks
27%synergy
Changeling Outcast
29%inclusion1.84K decks6.42K decks
24%synergy
Nezumi Informant
28%inclusion1.81K decks6.42K decks
22%synergy
Ruin Rat
28%inclusion1.80K decks6.42K decks
27%synergy
Nashi, Moon Sage's Scion
28%inclusion1.77K decks6.42K decks
24%synergy
Ravenous Rats
27%inclusion1.70K decks6.42K decks
25%synergy
Gnawing Vermin
24%inclusion1.55K decks6.42K decks
23%synergy
Engine Rat
24%inclusion1.13K decks4.71K decks
22%synergy
Nezumi Cutthroat
23%inclusion1.49K decks6.42K decks
22%synergy
Drainpipe Vermin
22%inclusion1.42K decks6.42K decks
21%synergy
Old Flitterfang
22%inclusion1.42K decks6.42K decks
21%synergy
Twisted Sewer-Witch
22%inclusion1.41K decks6.42K decks
20%synergy
Ayara, First of Locthwain
22%inclusion1.40K decks6.42K decks
-4%synergy
Valley Rotcaller
22%inclusion1.27K decks5.90K decks
19%synergy
Razortooth Rats
20%inclusion1.31K decks6.42K decks
20%synergy
Throat Slitter
20%inclusion1.28K decks6.42K decks
18%synergy
Relentless Rats
20%inclusion1.26K decks6.42K decks
18%synergy
Ruthless Radrat
20%inclusion1.26K decks6.42K decks
19%synergy
Undercity Dire Rat
19%inclusion714 decks3.81K decks
17%synergy
Locust Miser
19%inclusion1.20K decks6.42K decks
17%synergy
Species Specialist
18%inclusion1.18K decks6.42K decks
15%synergy
Gray Merchant of Asphodel
17%inclusion1.08K decks6.42K decks
-34%synergy
Crypt Ghast
16%inclusion1.05K decks6.42K decks
-31%synergy
Innocuous Rat
15%inclusion847 decks5.49K decks
14%synergy
Mukotai Ambusher
15%inclusion942 decks6.42K decks
14%synergy
Rotting Rats
15%inclusion938 decks6.42K decks
11%synergy
Nezumi Graverobber
14%inclusion905 decks6.42K decks
13%synergy
Refurbished Familiar
13%inclusion814 decks6.15K decks
11%synergy
Nezumi Bladeblesser
13%inclusion805 decks6.42K decks
12%synergy
Sinuous Vermin
12%inclusion775 decks6.42K decks
12%synergy
Skullsnatcher
11%inclusion709 decks6.42K decks
10%synergy
Daggerfang Duo
11%inclusion644 decks5.84K decks
10%synergy
Okiba-Gang Shinobi
10%inclusion660 decks6.42K decks
9%synergy
Chittering Rats
10%inclusion631 decks6.42K decks
9%synergy
Adaptive Automaton
10%inclusion613 decks6.42K decks
8%synergy
Thornplate Intimidator
9.0%inclusion528 decks5.87K decks
8%synergy
Bog Rats
8.8%inclusion565 decks6.42K decks
8%synergy
Instants
Whisper of the Dross
46%inclusion2.94K decks6.42K decks
43%synergy
Village Rites
40%inclusion2.54K decks6.42K decks
14%synergy
Defile
36%inclusion2.31K decks6.42K decks
-1%synergy
Go for the Throat
29%inclusion1.83K decks6.42K decks
5%synergy
Grim Affliction
28%inclusion1.78K decks6.42K decks
26%synergy
Rat Out
27%inclusion1.75K decks6.42K decks
26%synergy
Corrupted Conviction
21%inclusion1.34K decks6.42K decks
8%synergy
Deadly Dispute
20%inclusion1.30K decks6.42K decks
-6%synergy
Tainted Strike
19%inclusion1.20K decks6.42K decks
16%synergy
Murder
19%inclusion1.20K decks6.42K decks
8%synergy
Infernal Grasp
16%inclusion1.04K decks6.42K decks
-9%synergy
Anoint with Affliction
16%inclusion1.02K decks6.42K decks
15%synergy
Tragic Slip
16%inclusion1K decks6.42K decks
-4%synergy
Withering Torment
14%inclusion779 decks5.50K decks
-17%synergy
Deadly Rollick
14%inclusion891 decks6.42K decks
-10%synergy
Foul-Tongue Shriek
13%inclusion831 decks6.42K decks
11%synergy
Consuming Corruption
11%inclusion654 decks6.18K decks
-5%synergy
Gravepurge
9.4%inclusion604 decks6.42K decks
8%synergy
Hero's Downfall
9.3%inclusion600 decks6.42K decks
3%synergy
Malakir Rebirth
9.3%inclusion596 decks6.42K decks
-14%synergy
Doom Blade
9.1%inclusion585 decks6.42K decks
2%synergy
Raise the Draugr
9.1%inclusion584 decks6.42K decks
8%synergy
Virulent Wound
8.8%inclusion562 decks6.42K decks
8%synergy
Fell the Profane
7.8%inclusion482 decks6.21K decks
-11%synergy
Sudden Spoiling
6.2%inclusion396 decks6.42K decks
-3%synergy
Bitter Triumph
5.9%inclusion381 decks6.42K decks
-4%synergy
Cabal Ritual
5.9%inclusion377 decks6.42K decks
-12%synergy
Altar's Reap
5.8%inclusion372 decks6.42K decks
3%synergy
Offer Immortality
5.7%inclusion369 decks6.42K decks
4%synergy
Not Dead After All
5.2%inclusion333 decks6.42K decks
-6%synergy
Death Denied
5.1%inclusion329 decks6.42K decks
4%synergy
Sorceries
Phyresis Outbreak
40%inclusion2.60K decks6.42K decks
39%synergy
Revenge of the Rats
39%inclusion2.05K decks5.21K decks
36%synergy
Feed the Swarm
37%inclusion2.35K decks6.42K decks
-14%synergy
Crippling Fear
32%inclusion2.04K decks6.42K decks
29%synergy
Patriarch's Bidding
30%inclusion1.90K decks6.42K decks
25%synergy
Sign in Blood
29%inclusion1.87K decks6.42K decks
-6%synergy
Vat Emergence
26%inclusion1.68K decks6.42K decks
25%synergy
Kindred Dominance
26%inclusion1.66K decks6.42K decks
21%synergy
Swarmyard Massacre
19%inclusion1.13K decks5.84K decks
17%synergy
Bloodline Bidding
19%inclusion322 decks1.68K decks
15%synergy
Spread the Sickness
19%inclusion1.22K decks6.42K decks
18%synergy
Night's Whisper
16%inclusion1.03K decks6.42K decks
-9%synergy
Read the Bones
15%inclusion975 decks6.42K decks
-2%synergy
Diabolic Tutor
14%inclusion915 decks6.42K decks
0%synergy
Feed the Infection
13%inclusion827 decks6.42K decks
12%synergy
Echoing Return
13%inclusion821 decks6.42K decks
10%synergy
Victimize
11%inclusion730 decks6.42K decks
-15%synergy
Plague of Vermin
11%inclusion727 decks6.42K decks
9%synergy
Toxic Deluge
11%inclusion720 decks6.42K decks
-26%synergy
Unearth
11%inclusion713 decks6.42K decks
2%synergy
Damnation
11%inclusion699 decks6.42K decks
-10%synergy
Diabolic Intent
11%inclusion680 decks6.42K decks
-4%synergy
Gruesome Fate
10%inclusion648 decks6.42K decks
8%synergy
Reanimate
9.1%inclusion584 decks6.42K decks
-31%synergy
Caress of Phyrexia
9.0%inclusion577 decks6.42K decks
8%synergy
Geth's Summons
8.8%inclusion567 decks6.42K decks
8%synergy
Lab Rats
8.3%inclusion534 decks6.42K decks
8%synergy
Mutilate
7.5%inclusion484 decks6.42K decks
-10%synergy
Pact of the Serpent
7.1%inclusion459 decks6.42K decks
5%synergy
Return from Extinction
6.5%inclusion415 decks6.42K decks
6%synergy
Forever Young
6.3%inclusion407 decks6.42K decks
5%synergy
Fell
6.3%inclusion371 decks5.90K decks
3%synergy
Grim Tutor
6.3%inclusion402 decks6.42K decks
-5%synergy
Bubbling Muck
6.0%inclusion387 decks6.42K decks
-9%synergy
Haunting Voyage
5.5%inclusion351 decks6.42K decks
4%synergy
Insatiable Avarice
5.2%inclusion331 decks6.42K decks
-7%synergy
In Garruk's Wake
5.1%inclusion326 decks6.42K decks
1%synergy
Utility Artifacts
Herald's Horn
45%inclusion2.87K decks6.42K decks
39%synergy
Skullclamp
33%inclusion2.13K decks6.42K decks
11%synergy
Vanquisher's Banner
31%inclusion2K decks6.42K decks
27%synergy
Contagion Clasp
27%inclusion1.76K decks6.42K decks
25%synergy
Thrumming Stone
22%inclusion1.44K decks6.42K decks
18%synergy
Swiftfoot Boots
18%inclusion1.18K decks6.42K decks
-13%synergy
Lightning Greaves
15%inclusion953 decks6.42K decks
-19%synergy
Coat of Arms
15%inclusion933 decks6.42K decks
12%synergy
Contagion Engine
14%inclusion931 decks6.42K decks
13%synergy
Door of Destinies
13%inclusion818 decks6.42K decks
11%synergy
Whip of Erebos
12%inclusion770 decks6.42K decks
1%synergy
Chronicle of Victory
12%inclusion203 decks1.70K decks
9%synergy
Banner of Kinship
12%inclusion624 decks5.22K decks
10%synergy
Icon of Ancestry
11%inclusion721 decks6.42K decks
10%synergy
The Darkness Crystal
10%inclusion398 decks3.85K decks
-10%synergy
Eldrazi Monument
7.9%inclusion509 decks6.42K decks
6%synergy
Grafted Exoskeleton
7.6%inclusion490 decks6.42K decks
7%synergy
Ashnod's Altar
7.3%inclusion472 decks6.42K decks
-12%synergy
Prosthetic Injector
7.2%inclusion460 decks6.42K decks
7%synergy
Wayfarer's Bauble
6.7%inclusion431 decks6.42K decks
-9%synergy
Thornbite Staff
6.3%inclusion407 decks6.42K decks
4%synergy
Gathering Stone
6.1%inclusion103 decks1.68K decks
5%synergy
Sword of the Squeak
5.3%inclusion308 decks5.84K decks
5%synergy
Enchantments
Phyrexian Arena
36%inclusion2.31K decks6.42K decks
-4%synergy
Necrogen Communion
36%inclusion2.30K decks6.42K decks
34%synergy
Cover of Darkness
31%inclusion2.02K decks6.42K decks
29%synergy
Bad Moon
22%inclusion1.39K decks6.42K decks
18%synergy
Oversold Cemetery
19%inclusion1.20K decks6.42K decks
13%synergy
Haunted One
18%inclusion1.14K decks6.42K decks
15%synergy
Phyresis
18%inclusion1.14K decks6.42K decks
16%synergy
Grave Pact
17%inclusion1.09K decks6.42K decks
-2%synergy
Black Market
16%inclusion1.02K decks6.42K decks
-5%synergy
Black Market Connections
13%inclusion864 decks6.42K decks
-10%synergy
Tribute to Horobi
13%inclusion832 decks6.42K decks
12%synergy
Vampiric Rites
10%inclusion636 decks6.42K decks
4%synergy
Lord Skitter's Blessing
8.3%inclusion534 decks6.42K decks
8%synergy
Dictate of Erebos
7.4%inclusion476 decks6.42K decks
-4%synergy
Intimidation
6.7%inclusion430 decks6.42K decks
6%synergy
Phyrexian Reclamation
6.2%inclusion397 decks6.42K decks
-4%synergy
The Meathook Massacre
5.9%inclusion382 decks6.42K decks
-11%synergy
Dark Prophecy
5.2%inclusion333 decks6.42K decks
1%synergy
Planeswalkers
Vraska, Betrayal's Sting
27%inclusion1.77K decks6.42K decks
25%synergy
Liliana of the Dark Realms
9.1%inclusion587 decks6.42K decks
-5%synergy
Utility Lands
Swarmyard
53%inclusion3.42K decks6.42K decks
48%synergy
Karn's Bastion
43%inclusion2.75K decks6.42K decks
39%synergy
Bojuka Bog
41%inclusion2.66K decks6.42K decks
-5%synergy
Cabal Coffers
39%inclusion2.52K decks6.42K decks
-16%synergy
Rogue's Passage
36%inclusion2.32K decks6.42K decks
17%synergy
Mudflat Village
34%inclusion2.01K decks5.95K decks
31%synergy
Witch's Cottage
26%inclusion1.65K decks6.42K decks
1%synergy
Cabal Stronghold
25%inclusion1.57K decks6.42K decks
-10%synergy
Reliquary Tower
22%inclusion1.44K decks6.42K decks
-8%synergy
Urborg, Tomb of Yawgmoth
22%inclusion1.41K decks6.42K decks
-16%synergy
Mortuary Mire
22%inclusion1.41K decks6.42K decks
9%synergy
Nykthos, Shrine to Nyx
19%inclusion1.23K decks6.42K decks
-11%synergy
Three Tree City
19%inclusion1.12K decks5.90K decks
14%synergy
Access Tunnel
14%inclusion924 decks6.42K decks
11%synergy
Phyrexian Tower
13%inclusion862 decks6.42K decks
-12%synergy
Castle Locthwain
11%inclusion714 decks6.42K decks
-6%synergy
Crypt of Agadeem
10%inclusion643 decks6.42K decks
-1%synergy
War Room
9.0%inclusion576 decks6.42K decks
-7%synergy
Barren Moor
8.5%inclusion546 decks6.42K decks
-1%synergy
Secret Tunnel
8.3%inclusion197 decks2.37K decks
7%synergy
Shizo, Death's Storehouse
8.2%inclusion526 decks6.42K decks
-2%synergy
Temple of the False God
7.6%inclusion487 decks6.42K decks
0%synergy
Takenuma, Abandoned Mire
6.1%inclusion391 decks6.42K decks
-10%synergy
The Dross Pits
5.1%inclusion325 decks6.42K decks
4%synergy
Mana Artifacts
Sol Ring
78%inclusion4.99K decks6.42K decks
-8%synergy
Arcane Signet
49%inclusion3.12K decks6.42K decks
-13%synergy
Glistening Sphere
30%inclusion1.96K decks6.42K decks
29%synergy
Patchwork Banner
24%inclusion1.38K decks5.87K decks
19%synergy
Charcoal Diamond
22%inclusion1.39K decks6.42K decks
-1%synergy
Mind Stone
16%inclusion1.03K decks6.42K decks
-13%synergy
Staff of Compleation
15%inclusion982 decks6.42K decks
14%synergy
Heraldic Banner
14%inclusion913 decks6.42K decks
9%synergy
Phyrexian Atlas
11%inclusion686 decks6.42K decks
10%synergy
Thought Vessel
10%inclusion656 decks6.42K decks
-16%synergy
Caged Sun
9.3%inclusion599 decks6.42K decks
-2%synergy
Commander's Sphere
7.3%inclusion469 decks6.42K decks
-1%synergy
The Soul Stone
6.8%inclusion217 decks3.19K decks
-8%synergy
Gauntlet of Power
5.5%inclusion354 decks6.42K decks
2%synergy
Lands
Swamp
98%inclusion6.27K decks6.42K decks
2%synergy
Path of Ancestry
32%inclusion2.05K decks6.42K decks
27%synergy
Myriad Landscape
18%inclusion1.18K decks6.42K decks
-7%synergy
Cavern of Souls
13%inclusion857 decks6.42K decks
7%synergy
Command Tower
10%inclusion666 decks6.42K decks
5%synergy
Malakir Rebirth
9.3%inclusion596 decks6.42K decks
-14%synergy
Fell the Profane
7.8%inclusion482 decks6.21K decks
-11%synergy
Evolving Wilds
6.4%inclusion414 decks6.42K decks
3%synergy
Escape Tunnel
5.9%inclusion377 decks6.42K decks
5%synergy
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