Karumonix, the Rat King (Commander)

Karumonix, the Rat King
Rank #394
6,615decks
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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Decorum Dissertation
2.0%inclusion20 decks988 decks
-4%synergy
Emeritus of Woe
1.8%inclusion17 decks970 decks
-6%synergy
Arnyn, Deathbloom Botanist
1.8%inclusion17 decks970 decks
-1%synergy
Pox Plague
1.4%inclusion14 decks978 decks
-4%synergy
Grave Researcher
1.4%inclusion15 decks1.08K decks
-7%synergy
High Synergy Cards
Piper of the Swarm
81%inclusion5.34K decks6.62K decks
74%synergy
Blightbelly Rat
77%inclusion5.10K decks6.62K decks
74%synergy
Marrow-Gnawer
74%inclusion4.90K decks6.62K decks
71%synergy
Pack Rat
73%inclusion4.82K decks6.62K decks
67%synergy
Ogre Slumlord
75%inclusion4.95K decks6.62K decks
65%synergy
Ichor Rats
67%inclusion4.45K decks6.62K decks
64%synergy
Lord Skitter, Sewer King
67%inclusion4.45K decks6.62K decks
59%synergy
Infectious Inquiry
60%inclusion3.98K decks6.62K decks
57%synergy
Typhoid Rats
60%inclusion3.98K decks6.62K decks
56%synergy
Vraska's Fall
59%inclusion3.89K decks6.62K decks
55%synergy
Top Cards
Dark Ritual
57%inclusion3.78K decks6.62K decks
-10%synergy
Rat Colony
56%inclusion3.72K decks6.62K decks
51%synergy
Rancid Rats
55%inclusion3.67K decks6.62K decks
53%synergy
Lord Skitter's Butcher
55%inclusion3.66K decks6.62K decks
52%synergy
Tangled Colony
54%inclusion3.56K decks6.62K decks
51%synergy
Crypt Rats
54%inclusion3.55K decks6.62K decks
49%synergy
Drown in Ichor
54%inclusion3.55K decks6.62K decks
50%synergy
Bontu's Monument
53%inclusion3.51K decks6.62K decks
25%synergy
Septic Rats
53%inclusion3.48K decks6.62K decks
51%synergy
Jet Medallion
52%inclusion3.46K decks6.62K decks
-10%synergy
Game Changers
Demonic Tutor
21%inclusion1.39K decks6.62K decks
-6%synergy
Vampiric Tutor
15%inclusion1K decks6.62K decks
-6%synergy
Bolas's Citadel
15%inclusion985 decks6.62K decks
-14%synergy
Creatures
Burglar Rat
50%inclusion3.30K decks6.62K decks
39%synergy
Voracious Vermin
48%inclusion3.19K decks6.62K decks
45%synergy
Persistent Marshstalker
44%inclusion2.85K decks6.46K decks
41%synergy
Stronghold Rats
42%inclusion2.76K decks6.62K decks
38%synergy
Gnat Miser
41%inclusion2.70K decks6.62K decks
38%synergy
Ashcoat of the Shadow Swarm
40%inclusion2.64K decks6.62K decks
36%synergy
Ratcatcher
40%inclusion2.61K decks6.62K decks
36%synergy
Chittering Skitterling
38%inclusion2.51K decks6.62K decks
37%synergy
Swarm of Rats
34%inclusion2.28K decks6.62K decks
32%synergy
Wave of Rats
34%inclusion2.27K decks6.62K decks
33%synergy
Pestilence Rats
32%inclusion2.10K decks6.62K decks
30%synergy
Chittering Witch
31%inclusion2.03K decks6.62K decks
26%synergy
Rat King, Verminister
30%inclusion622 decks2.10K decks
26%synergy
Ink-Eyes, Servant of Oni
29%inclusion1.95K decks6.62K decks
26%synergy
Nezumi Prowler
28%inclusion1.86K decks6.62K decks
27%synergy
Changeling Outcast
28%inclusion1.84K decks6.62K decks
23%synergy
Rat King, Pale Piper
28%inclusion470 decks1.70K decks
24%synergy
Ruin Rat
28%inclusion1.83K decks6.62K decks
26%synergy
Nezumi Informant
27%inclusion1.79K decks6.62K decks
21%synergy
Nashi, Moon Sage's Scion
26%inclusion1.75K decks6.62K decks
23%synergy
Ravenous Rats
26%inclusion1.70K decks6.62K decks
24%synergy
Engine Rat
24%inclusion1.30K decks5.30K decks
23%synergy
Gnawing Vermin
24%inclusion1.56K decks6.62K decks
22%synergy
Nezumi Cutthroat
23%inclusion1.51K decks6.62K decks
22%synergy
Valley Rotcaller
22%inclusion1.41K decks6.48K decks
19%synergy
Drainpipe Vermin
22%inclusion1.44K decks6.62K decks
20%synergy
Ayara, First of Locthwain
21%inclusion1.42K decks6.62K decks
-4%synergy
Twisted Sewer-Witch
21%inclusion1.39K decks6.62K decks
20%synergy
Old Flitterfang
21%inclusion1.38K decks6.62K decks
20%synergy
Razortooth Rats
20%inclusion1.33K decks6.62K decks
20%synergy
Relentless Rats
20%inclusion1.29K decks6.62K decks
18%synergy
Throat Slitter
19%inclusion1.28K decks6.62K decks
18%synergy
Undercity Dire Rat
19%inclusion840 decks4.41K decks
17%synergy
Ruthless Radrat
19%inclusion1.25K decks6.62K decks
18%synergy
Species Specialist
18%inclusion1.20K decks6.62K decks
15%synergy
Locust Miser
18%inclusion1.19K decks6.62K decks
16%synergy
Gray Merchant of Asphodel
16%inclusion1.08K decks6.62K decks
-34%synergy
Crypt Ghast
16%inclusion1.06K decks6.62K decks
-31%synergy
Innocuous Rat
15%inclusion914 decks6.07K decks
14%synergy
Mukotai Ambusher
14%inclusion948 decks6.62K decks
14%synergy
Rotting Rats
14%inclusion914 decks6.62K decks
11%synergy
Nezumi Graverobber
14%inclusion898 decks6.62K decks
12%synergy
Refurbished Familiar
13%inclusion879 decks6.62K decks
11%synergy
Nezumi Bladeblesser
13%inclusion832 decks6.62K decks
12%synergy
Sinuous Vermin
12%inclusion781 decks6.62K decks
11%synergy
Daggerfang Duo
11%inclusion692 decks6.42K decks
10%synergy
Skullsnatcher
11%inclusion696 decks6.62K decks
10%synergy
Okiba-Gang Shinobi
10%inclusion653 decks6.62K decks
9%synergy
Chittering Rats
10%inclusion644 decks6.62K decks
9%synergy
Adaptive Automaton
9.1%inclusion601 decks6.62K decks
8%synergy
Instants
Whisper of the Dross
46%inclusion3.03K decks6.62K decks
43%synergy
Village Rites
39%inclusion2.58K decks6.62K decks
14%synergy
Defile
35%inclusion2.33K decks6.62K decks
-1%synergy
Go for the Throat
28%inclusion1.88K decks6.62K decks
6%synergy
Grim Affliction
28%inclusion1.87K decks6.62K decks
26%synergy
Rat Out
27%inclusion1.79K decks6.62K decks
26%synergy
Corrupted Conviction
20%inclusion1.36K decks6.62K decks
8%synergy
Deadly Dispute
20%inclusion1.35K decks6.62K decks
-6%synergy
Tainted Strike
19%inclusion1.23K decks6.62K decks
16%synergy
Murder
19%inclusion1.23K decks6.62K decks
9%synergy
Infernal Grasp
16%inclusion1.08K decks6.62K decks
-9%synergy
Anoint with Affliction
16%inclusion1.03K decks6.62K decks
15%synergy
Tragic Slip
15%inclusion1.02K decks6.62K decks
-4%synergy
Deadly Rollick
14%inclusion940 decks6.62K decks
-10%synergy
Withering Torment
14%inclusion842 decks6.09K decks
-18%synergy
Foul-Tongue Shriek
12%inclusion823 decks6.62K decks
11%synergy
Consuming Corruption
11%inclusion715 decks6.62K decks
-5%synergy
Malakir Rebirth
10%inclusion633 decks6.62K decks
-14%synergy
Hero's Downfall
9.2%inclusion610 decks6.62K decks
3%synergy
Virulent Wound
9.0%inclusion595 decks6.62K decks
9%synergy
Gravepurge
9.0%inclusion593 decks6.62K decks
7%synergy
Raise the Draugr
8.9%inclusion589 decks6.62K decks
8%synergy
Doom Blade
8.8%inclusion583 decks6.62K decks
2%synergy
Fell the Profane
7.9%inclusion524 decks6.62K decks
-11%synergy
Cabal Ritual
6.1%inclusion406 decks6.62K decks
-12%synergy
Sudden Spoiling
5.9%inclusion390 decks6.62K decks
-3%synergy
Offer Immortality
5.7%inclusion377 decks6.62K decks
4%synergy
Culling the Weak
5.7%inclusion376 decks6.62K decks
-11%synergy
Altar's Reap
5.5%inclusion364 decks6.62K decks
3%synergy
Bitter Triumph
5.3%inclusion351 decks6.62K decks
-5%synergy
Sorceries
Phyresis Outbreak
40%inclusion2.63K decks6.62K decks
38%synergy
Revenge of the Rats
40%inclusion2.29K decks5.80K decks
36%synergy
Feed the Swarm
36%inclusion2.41K decks6.62K decks
-14%synergy
Crippling Fear
31%inclusion2.08K decks6.62K decks
29%synergy
Sign in Blood
29%inclusion1.91K decks6.62K decks
-6%synergy
Patriarch's Bidding
29%inclusion1.89K decks6.62K decks
24%synergy
Kindred Dominance
26%inclusion1.72K decks6.62K decks
21%synergy
Vat Emergence
26%inclusion1.70K decks6.62K decks
24%synergy
Swarmyard Massacre
19%inclusion1.24K decks6.42K decks
17%synergy
Spread the Sickness
19%inclusion1.25K decks6.62K decks
18%synergy
Bloodline Bidding
19%inclusion439 decks2.32K decks
15%synergy
Night's Whisper
16%inclusion1.07K decks6.62K decks
-9%synergy
Read the Bones
15%inclusion995 decks6.62K decks
-1%synergy
Diabolic Tutor
14%inclusion942 decks6.62K decks
0%synergy
Feed the Infection
13%inclusion847 decks6.62K decks
12%synergy
Echoing Return
12%inclusion812 decks6.62K decks
9%synergy
Victimize
12%inclusion780 decks6.62K decks
-15%synergy
Toxic Deluge
11%inclusion750 decks6.62K decks
-25%synergy
Plague of Vermin
11%inclusion737 decks6.62K decks
9%synergy
Damnation
11%inclusion717 decks6.62K decks
-9%synergy
Unearth
11%inclusion715 decks6.62K decks
2%synergy
Diabolic Intent
10%inclusion692 decks6.62K decks
-5%synergy
Gruesome Fate
10%inclusion650 decks6.62K decks
8%synergy
Caress of Phyrexia
9.3%inclusion613 decks6.62K decks
9%synergy
Reanimate
9.2%inclusion610 decks6.62K decks
-31%synergy
Geth's Summons
8.6%inclusion570 decks6.62K decks
8%synergy
Lab Rats
8.0%inclusion530 decks6.62K decks
8%synergy
Mutilate
7.0%inclusion464 decks6.62K decks
-9%synergy
Pact of the Serpent
6.8%inclusion447 decks6.62K decks
5%synergy
Grim Tutor
6.4%inclusion421 decks6.62K decks
-5%synergy
Bubbling Muck
6.2%inclusion410 decks6.62K decks
-9%synergy
Return from Extinction
6.1%inclusion405 decks6.62K decks
6%synergy
Fell
6.1%inclusion396 decks6.48K decks
3%synergy
Forever Young
6.1%inclusion403 decks6.62K decks
5%synergy
Haunting Voyage
5.2%inclusion342 decks6.62K decks
4%synergy
Utility Artifacts
Herald's Horn
44%inclusion2.92K decks6.62K decks
38%synergy
Skullclamp
34%inclusion2.23K decks6.62K decks
11%synergy
Vanquisher's Banner
31%inclusion2.02K decks6.62K decks
27%synergy
Contagion Clasp
27%inclusion1.82K decks6.62K decks
25%synergy
Thrumming Stone
22%inclusion1.48K decks6.62K decks
18%synergy
Swiftfoot Boots
18%inclusion1.21K decks6.62K decks
-13%synergy
Lightning Greaves
16%inclusion1.03K decks6.62K decks
-18%synergy
Contagion Engine
14%inclusion958 decks6.62K decks
13%synergy
Coat of Arms
14%inclusion947 decks6.62K decks
12%synergy
Door of Destinies
12%inclusion821 decks6.62K decks
10%synergy
Chronicle of Victory
12%inclusion289 decks2.34K decks
10%synergy
Banner of Kinship
12%inclusion684 decks5.81K decks
10%synergy
Whip of Erebos
12%inclusion777 decks6.62K decks
1%synergy
Icon of Ancestry
11%inclusion721 decks6.62K decks
10%synergy
The Darkness Crystal
10%inclusion462 decks4.45K decks
-10%synergy
Eldrazi Monument
7.6%inclusion506 decks6.62K decks
6%synergy
Grafted Exoskeleton
7.4%inclusion487 decks6.62K decks
6%synergy
Ashnod's Altar
7.1%inclusion471 decks6.62K decks
-13%synergy
Prosthetic Injector
7.0%inclusion466 decks6.62K decks
7%synergy
Wayfarer's Bauble
6.8%inclusion449 decks6.62K decks
-8%synergy
Thornbite Staff
6.5%inclusion428 decks6.62K decks
4%synergy
Gathering Stone
6.1%inclusion142 decks2.32K decks
5%synergy
Sword of the Squeak
5.3%inclusion340 decks6.42K decks
5%synergy
Enchantments
Phyrexian Arena
35%inclusion2.35K decks6.62K decks
-4%synergy
Necrogen Communion
35%inclusion2.34K decks6.62K decks
34%synergy
Cover of Darkness
33%inclusion2.19K decks6.62K decks
30%synergy
Bad Moon
21%inclusion1.40K decks6.62K decks
18%synergy
Oversold Cemetery
18%inclusion1.19K decks6.62K decks
13%synergy
Phyresis
17%inclusion1.16K decks6.62K decks
15%synergy
Grave Pact
17%inclusion1.14K decks6.62K decks
-2%synergy
Haunted One
17%inclusion1.12K decks6.62K decks
14%synergy
Black Market
16%inclusion1.03K decks6.62K decks
-5%synergy
Black Market Connections
14%inclusion915 decks6.62K decks
-10%synergy
Tribute to Horobi
12%inclusion817 decks6.62K decks
11%synergy
Vampiric Rites
10%inclusion641 decks6.62K decks
4%synergy
Lord Skitter's Blessing
7.9%inclusion523 decks6.62K decks
7%synergy
Dictate of Erebos
7.3%inclusion482 decks6.62K decks
-4%synergy
Intimidation
6.7%inclusion440 decks6.62K decks
6%synergy
Phyrexian Reclamation
6.2%inclusion409 decks6.62K decks
-4%synergy
The Meathook Massacre
6.0%inclusion394 decks6.62K decks
-11%synergy
Dark Prophecy
5.0%inclusion331 decks6.62K decks
1%synergy
Planeswalkers
Vraska, Betrayal's Sting
28%inclusion1.86K decks6.62K decks
26%synergy
Liliana of the Dark Realms
9.2%inclusion611 decks6.62K decks
-5%synergy
Utility Lands
Swarmyard
54%inclusion3.58K decks6.62K decks
48%synergy
Karn's Bastion
43%inclusion2.82K decks6.62K decks
39%synergy
Bojuka Bog
41%inclusion2.71K decks6.62K decks
-6%synergy
Cabal Coffers
40%inclusion2.62K decks6.62K decks
-15%synergy
Rogue's Passage
36%inclusion2.39K decks6.62K decks
17%synergy
Mudflat Village
34%inclusion2.21K decks6.53K decks
31%synergy
Witch's Cottage
26%inclusion1.69K decks6.62K decks
1%synergy
Cabal Stronghold
24%inclusion1.61K decks6.62K decks
-10%synergy
Reliquary Tower
22%inclusion1.48K decks6.62K decks
-8%synergy
Urborg, Tomb of Yawgmoth
22%inclusion1.45K decks6.62K decks
-16%synergy
Mortuary Mire
22%inclusion1.43K decks6.62K decks
9%synergy
Three Tree City
19%inclusion1.23K decks6.48K decks
14%synergy
Nykthos, Shrine to Nyx
19%inclusion1.24K decks6.62K decks
-11%synergy
Access Tunnel
14%inclusion937 decks6.62K decks
11%synergy
Phyrexian Tower
14%inclusion904 decks6.62K decks
-12%synergy
Castle Locthwain
11%inclusion732 decks6.62K decks
-6%synergy
Crypt of Agadeem
10%inclusion673 decks6.62K decks
-1%synergy
War Room
9.0%inclusion594 decks6.62K decks
-7%synergy
Barren Moor
8.3%inclusion549 decks6.62K decks
-1%synergy
Secret Tunnel
8.0%inclusion241 decks3K decks
7%synergy
Shizo, Death's Storehouse
8.0%inclusion530 decks6.62K decks
-2%synergy
Temple of the False God
7.5%inclusion498 decks6.62K decks
-0%synergy
Takenuma, Abandoned Mire
6.2%inclusion407 decks6.62K decks
-9%synergy
Mana Artifacts
Sol Ring
78%inclusion5.14K decks6.62K decks
-8%synergy
Arcane Signet
48%inclusion3.20K decks6.62K decks
-13%synergy
Glistening Sphere
30%inclusion1.99K decks6.62K decks
29%synergy
Patchwork Banner
24%inclusion1.52K decks6.45K decks
19%synergy
Charcoal Diamond
21%inclusion1.42K decks6.62K decks
-1%synergy
Mind Stone
16%inclusion1.05K decks6.62K decks
-13%synergy
Staff of Compleation
15%inclusion1.01K decks6.62K decks
14%synergy
Heraldic Banner
14%inclusion926 decks6.62K decks
9%synergy
Phyrexian Atlas
11%inclusion697 decks6.62K decks
10%synergy
Thought Vessel
10%inclusion668 decks6.62K decks
-15%synergy
Caged Sun
8.5%inclusion563 decks6.62K decks
-2%synergy
Commander's Sphere
7.1%inclusion469 decks6.62K decks
-1%synergy
The Soul Stone
6.6%inclusion252 decks3.80K decks
-8%synergy
Gauntlet of Power
5.2%inclusion344 decks6.62K decks
2%synergy
Lands
Swamp
98%inclusion6.46K decks6.62K decks
2%synergy
Path of Ancestry
32%inclusion2.08K decks6.62K decks
26%synergy
Myriad Landscape
18%inclusion1.18K decks6.62K decks
-7%synergy
Cavern of Souls
13%inclusion888 decks6.62K decks
7%synergy
Big Apple, 3 a.m.
10%inclusion171 decks1.70K decks
8%synergy
Command Tower
10%inclusion657 decks6.62K decks
4%synergy
Malakir Rebirth
10%inclusion633 decks6.62K decks
-14%synergy
Fell the Profane
7.9%inclusion524 decks6.62K decks
-11%synergy
Evolving Wilds
6.1%inclusion405 decks6.62K decks
2%synergy
Escape Tunnel
5.7%inclusion374 decks6.62K decks
5%synergy
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