Karumonix, the Rat King (Commander)

Karumonix, the Rat King
Rank #400
6,655decks
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
Lands
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Black Widow, Daring Operative
0.2%inclusion1 decks450 decks
-0%synergy
Stolen Stark Tech
0.2%inclusion1 decks450 decks
-1%synergy
Construct a Cosmic Cube
0.2%inclusion1 decks536 decks
-2%synergy
The Ten Rings
0.2%inclusion1 decks536 decks
-1%synergy
Baron Helmut Zemo
0.0%inclusion1 decks2.84K decks
-1%synergy
High Synergy Cards
Piper of the Swarm
81%inclusion5.38K decks6.66K decks
74%synergy
Blightbelly Rat
77%inclusion5.14K decks6.66K decks
74%synergy
Marrow-Gnawer
75%inclusion4.96K decks6.66K decks
71%synergy
Pack Rat
73%inclusion4.87K decks6.66K decks
67%synergy
Ogre Slumlord
75%inclusion4.98K decks6.66K decks
65%synergy
Ichor Rats
67%inclusion4.48K decks6.66K decks
64%synergy
Lord Skitter, Sewer King
67%inclusion4.47K decks6.66K decks
59%synergy
Infectious Inquiry
60%inclusion4K decks6.66K decks
57%synergy
Typhoid Rats
60%inclusion4.01K decks6.66K decks
57%synergy
Vraska's Fall
59%inclusion3.90K decks6.66K decks
55%synergy
Top Cards
Dark Ritual
57%inclusion3.79K decks6.66K decks
-10%synergy
Rat Colony
57%inclusion3.77K decks6.66K decks
51%synergy
Rancid Rats
55%inclusion3.69K decks6.66K decks
53%synergy
Lord Skitter's Butcher
55%inclusion3.66K decks6.66K decks
52%synergy
Crypt Rats
54%inclusion3.58K decks6.66K decks
49%synergy
Drown in Ichor
54%inclusion3.57K decks6.66K decks
50%synergy
Tangled Colony
54%inclusion3.57K decks6.66K decks
51%synergy
Septic Rats
53%inclusion3.51K decks6.66K decks
51%synergy
Bontu's Monument
53%inclusion3.51K decks6.66K decks
24%synergy
Jet Medallion
52%inclusion3.48K decks6.66K decks
-10%synergy
Game Changers
Demonic Tutor
21%inclusion1.42K decks6.66K decks
-6%synergy
Vampiric Tutor
15%inclusion1.02K decks6.66K decks
-6%synergy
Bolas's Citadel
15%inclusion989 decks6.66K decks
-14%synergy
Creatures
Burglar Rat
50%inclusion3.33K decks6.66K decks
39%synergy
Voracious Vermin
48%inclusion3.19K decks6.66K decks
45%synergy
Persistent Marshstalker
44%inclusion2.94K decks6.66K decks
41%synergy
Stronghold Rats
42%inclusion2.76K decks6.66K decks
38%synergy
Gnat Miser
41%inclusion2.72K decks6.66K decks
38%synergy
Ashcoat of the Shadow Swarm
40%inclusion2.69K decks6.66K decks
37%synergy
Ratcatcher
39%inclusion2.62K decks6.66K decks
36%synergy
Chittering Skitterling
38%inclusion2.51K decks6.66K decks
37%synergy
Swarm of Rats
35%inclusion2.30K decks6.66K decks
32%synergy
Wave of Rats
34%inclusion2.27K decks6.66K decks
32%synergy
Pestilence Rats
32%inclusion2.12K decks6.66K decks
30%synergy
Chittering Witch
31%inclusion2.05K decks6.66K decks
26%synergy
Rat King, Verminister
31%inclusion707 decks2.31K decks
27%synergy
Ink-Eyes, Servant of Oni
30%inclusion1.97K decks6.66K decks
26%synergy
Rat King, Pale Piper
29%inclusion556 decks1.92K decks
25%synergy
Nezumi Prowler
28%inclusion1.87K decks6.66K decks
27%synergy
Changeling Outcast
28%inclusion1.84K decks6.66K decks
23%synergy
Ruin Rat
27%inclusion1.83K decks6.66K decks
26%synergy
Nezumi Informant
27%inclusion1.76K decks6.66K decks
20%synergy
Nashi, Moon Sage's Scion
26%inclusion1.74K decks6.66K decks
22%synergy
Ravenous Rats
25%inclusion1.70K decks6.66K decks
24%synergy
Engine Rat
25%inclusion1.35K decks5.50K decks
23%synergy
Gnawing Vermin
23%inclusion1.54K decks6.66K decks
22%synergy
Nezumi Cutthroat
23%inclusion1.50K decks6.66K decks
22%synergy
Valley Rotcaller
22%inclusion1.45K decks6.66K decks
19%synergy
Ayara, First of Locthwain
22%inclusion1.43K decks6.66K decks
-4%synergy
Drainpipe Vermin
21%inclusion1.43K decks6.66K decks
20%synergy
Twisted Sewer-Witch
21%inclusion1.38K decks6.66K decks
19%synergy
Old Flitterfang
20%inclusion1.36K decks6.66K decks
19%synergy
Razortooth Rats
20%inclusion1.32K decks6.66K decks
19%synergy
Relentless Rats
19%inclusion1.29K decks6.66K decks
18%synergy
Throat Slitter
19%inclusion1.28K decks6.66K decks
17%synergy
Undercity Dire Rat
19%inclusion880 decks4.62K decks
17%synergy
Ruthless Radrat
18%inclusion1.23K decks6.66K decks
18%synergy
Species Specialist
18%inclusion1.20K decks6.66K decks
15%synergy
Locust Miser
18%inclusion1.20K decks6.66K decks
16%synergy
Gray Merchant of Asphodel
16%inclusion1.07K decks6.66K decks
-35%synergy
Crypt Ghast
16%inclusion1.07K decks6.66K decks
-31%synergy
Innocuous Rat
15%inclusion934 decks6.28K decks
14%synergy
Mukotai Ambusher
14%inclusion942 decks6.66K decks
13%synergy
Rotting Rats
14%inclusion913 decks6.66K decks
11%synergy
Nezumi Graverobber
13%inclusion891 decks6.66K decks
12%synergy
Refurbished Familiar
13%inclusion878 decks6.66K decks
11%synergy
Nezumi Bladeblesser
12%inclusion828 decks6.66K decks
12%synergy
Sinuous Vermin
12%inclusion767 decks6.66K decks
11%synergy
Daggerfang Duo
11%inclusion710 decks6.62K decks
10%synergy
Skullsnatcher
10%inclusion698 decks6.66K decks
10%synergy
Chittering Rats
10%inclusion641 decks6.66K decks
9%synergy
Okiba-Gang Shinobi
10%inclusion640 decks6.66K decks
9%synergy
Elephant-Rat
9.0%inclusion351 decks3.89K decks
9%synergy
Instants
Whisper of the Dross
46%inclusion3.05K decks6.66K decks
43%synergy
Village Rites
39%inclusion2.57K decks6.66K decks
13%synergy
Defile
35%inclusion2.34K decks6.66K decks
-1%synergy
Grim Affliction
28%inclusion1.89K decks6.66K decks
27%synergy
Go for the Throat
28%inclusion1.87K decks6.66K decks
6%synergy
Rat Out
27%inclusion1.79K decks6.66K decks
25%synergy
Corrupted Conviction
20%inclusion1.36K decks6.66K decks
8%synergy
Deadly Dispute
20%inclusion1.36K decks6.66K decks
-6%synergy
Tainted Strike
19%inclusion1.24K decks6.66K decks
16%synergy
Murder
18%inclusion1.23K decks6.66K decks
9%synergy
Infernal Grasp
16%inclusion1.10K decks6.66K decks
-9%synergy
Anoint with Affliction
16%inclusion1.04K decks6.66K decks
15%synergy
Tragic Slip
15%inclusion1.02K decks6.66K decks
-4%synergy
Deadly Rollick
14%inclusion961 decks6.66K decks
-11%synergy
Withering Torment
14%inclusion863 decks6.29K decks
-18%synergy
Foul-Tongue Shriek
12%inclusion818 decks6.66K decks
11%synergy
Consuming Corruption
11%inclusion710 decks6.66K decks
-5%synergy
Malakir Rebirth
9.5%inclusion630 decks6.66K decks
-14%synergy
Hero's Downfall
9.1%inclusion608 decks6.66K decks
3%synergy
Virulent Wound
8.9%inclusion589 decks6.66K decks
8%synergy
Raise the Draugr
8.8%inclusion588 decks6.66K decks
8%synergy
Gravepurge
8.8%inclusion583 decks6.66K decks
7%synergy
Doom Blade
8.7%inclusion581 decks6.66K decks
2%synergy
Fell the Profane
7.9%inclusion524 decks6.66K decks
-12%synergy
Cabal Ritual
6.3%inclusion416 decks6.66K decks
-12%synergy
Culling the Weak
6.0%inclusion401 decks6.66K decks
-11%synergy
Sudden Spoiling
5.9%inclusion390 decks6.66K decks
-3%synergy
Offer Immortality
5.7%inclusion382 decks6.66K decks
4%synergy
Altar's Reap
5.5%inclusion369 decks6.66K decks
3%synergy
Bitter Triumph
5.1%inclusion341 decks6.66K decks
-5%synergy
Sorceries
Phyresis Outbreak
40%inclusion2.64K decks6.66K decks
38%synergy
Revenge of the Rats
39%inclusion2.36K decks6K decks
36%synergy
Feed the Swarm
37%inclusion2.44K decks6.66K decks
-14%synergy
Crippling Fear
31%inclusion2.09K decks6.66K decks
28%synergy
Sign in Blood
29%inclusion1.91K decks6.66K decks
-6%synergy
Patriarch's Bidding
28%inclusion1.88K decks6.66K decks
24%synergy
Kindred Dominance
26%inclusion1.74K decks6.66K decks
21%synergy
Vat Emergence
26%inclusion1.70K decks6.66K decks
24%synergy
Swarmyard Massacre
19%inclusion1.27K decks6.62K decks
17%synergy
Bloodline Bidding
19%inclusion478 decks2.54K decks
15%synergy
Spread the Sickness
19%inclusion1.25K decks6.66K decks
18%synergy
Night's Whisper
16%inclusion1.07K decks6.66K decks
-9%synergy
Read the Bones
15%inclusion981 decks6.66K decks
-1%synergy
Diabolic Tutor
14%inclusion940 decks6.66K decks
0%synergy
Feed the Infection
13%inclusion850 decks6.66K decks
12%synergy
Echoing Return
12%inclusion808 decks6.66K decks
9%synergy
Victimize
12%inclusion793 decks6.66K decks
-15%synergy
Toxic Deluge
11%inclusion765 decks6.66K decks
-25%synergy
Plague of Vermin
11%inclusion731 decks6.66K decks
9%synergy
Unearth
11%inclusion726 decks6.66K decks
2%synergy
Damnation
11%inclusion723 decks6.66K decks
-9%synergy
Diabolic Intent
11%inclusion699 decks6.66K decks
-5%synergy
Gruesome Fate
10%inclusion638 decks6.66K decks
8%synergy
Reanimate
10%inclusion634 decks6.66K decks
-31%synergy
Caress of Phyrexia
9.1%inclusion606 decks6.66K decks
8%synergy
Geth's Summons
8.6%inclusion570 decks6.66K decks
8%synergy
Lab Rats
7.8%inclusion520 decks6.66K decks
7%synergy
Mutilate
7.0%inclusion464 decks6.66K decks
-9%synergy
Pact of the Serpent
6.7%inclusion443 decks6.66K decks
5%synergy
Grim Tutor
6.4%inclusion423 decks6.66K decks
-5%synergy
Bubbling Muck
6.3%inclusion417 decks6.66K decks
-9%synergy
Fell
6.0%inclusion402 decks6.66K decks
3%synergy
Forever Young
6.0%inclusion397 decks6.66K decks
5%synergy
Return from Extinction
5.9%inclusion394 decks6.66K decks
5%synergy
Haunting Voyage
5.1%inclusion339 decks6.66K decks
4%synergy
Utility Artifacts
Herald's Horn
44%inclusion2.94K decks6.66K decks
38%synergy
Skullclamp
34%inclusion2.25K decks6.66K decks
12%synergy
Vanquisher's Banner
30%inclusion2.02K decks6.66K decks
26%synergy
Contagion Clasp
28%inclusion1.83K decks6.66K decks
25%synergy
Thrumming Stone
22%inclusion1.49K decks6.66K decks
18%synergy
Swiftfoot Boots
18%inclusion1.21K decks6.66K decks
-13%synergy
Lightning Greaves
16%inclusion1.04K decks6.66K decks
-18%synergy
Contagion Engine
15%inclusion969 decks6.66K decks
13%synergy
Coat of Arms
14%inclusion955 decks6.66K decks
12%synergy
Door of Destinies
12%inclusion831 decks6.66K decks
10%synergy
Chronicle of Victory
12%inclusion312 decks2.55K decks
10%synergy
Whip of Erebos
12%inclusion780 decks6.66K decks
1%synergy
Banner of Kinship
12%inclusion703 decks6.01K decks
10%synergy
Icon of Ancestry
11%inclusion724 decks6.66K decks
10%synergy
The Darkness Crystal
10%inclusion487 decks4.65K decks
-10%synergy
Eldrazi Monument
7.7%inclusion511 decks6.66K decks
6%synergy
Ashnod's Altar
7.3%inclusion487 decks6.66K decks
-13%synergy
Grafted Exoskeleton
7.3%inclusion487 decks6.66K decks
6%synergy
Prosthetic Injector
7.1%inclusion472 decks6.66K decks
7%synergy
Wayfarer's Bauble
6.8%inclusion450 decks6.66K decks
-8%synergy
Thornbite Staff
6.6%inclusion440 decks6.66K decks
4%synergy
Gathering Stone
6.3%inclusion159 decks2.54K decks
5%synergy
Sword of the Squeak
5.3%inclusion349 decks6.62K decks
5%synergy
Enchantments
Necrogen Communion
36%inclusion2.36K decks6.66K decks
34%synergy
Phyrexian Arena
35%inclusion2.36K decks6.66K decks
-4%synergy
Cover of Darkness
34%inclusion2.24K decks6.66K decks
31%synergy
Bad Moon
21%inclusion1.38K decks6.66K decks
18%synergy
Oversold Cemetery
18%inclusion1.19K decks6.66K decks
13%synergy
Phyresis
17%inclusion1.16K decks6.66K decks
15%synergy
Grave Pact
17%inclusion1.16K decks6.66K decks
-2%synergy
Haunted One
17%inclusion1.11K decks6.66K decks
14%synergy
Black Market
16%inclusion1.04K decks6.66K decks
-5%synergy
Black Market Connections
14%inclusion934 decks6.66K decks
-10%synergy
Tribute to Horobi
12%inclusion814 decks6.66K decks
11%synergy
Vampiric Rites
10%inclusion640 decks6.66K decks
4%synergy
Lord Skitter's Blessing
7.7%inclusion513 decks6.66K decks
7%synergy
Dictate of Erebos
7.3%inclusion483 decks6.66K decks
-4%synergy
Intimidation
6.5%inclusion434 decks6.66K decks
6%synergy
Phyrexian Reclamation
6.2%inclusion412 decks6.66K decks
-4%synergy
The Meathook Massacre
6.0%inclusion400 decks6.66K decks
-11%synergy
Dark Prophecy
5.0%inclusion333 decks6.66K decks
1%synergy
Planeswalkers
Vraska, Betrayal's Sting
28%inclusion1.89K decks6.66K decks
26%synergy
Liliana of the Dark Realms
9.3%inclusion619 decks6.66K decks
-5%synergy
Utility Lands
Swarmyard
54%inclusion3.63K decks6.66K decks
49%synergy
Karn's Bastion
43%inclusion2.85K decks6.66K decks
39%synergy
Bojuka Bog
41%inclusion2.73K decks6.66K decks
-6%synergy
Cabal Coffers
40%inclusion2.65K decks6.66K decks
-15%synergy
Rogue's Passage
36%inclusion2.40K decks6.66K decks
17%synergy
Mudflat Village
34%inclusion2.28K decks6.66K decks
31%synergy
Witch's Cottage
26%inclusion1.72K decks6.66K decks
1%synergy
Cabal Stronghold
24%inclusion1.62K decks6.66K decks
-10%synergy
Reliquary Tower
22%inclusion1.48K decks6.66K decks
-8%synergy
Urborg, Tomb of Yawgmoth
22%inclusion1.46K decks6.66K decks
-16%synergy
Mortuary Mire
22%inclusion1.45K decks6.66K decks
9%synergy
Three Tree City
19%inclusion1.27K decks6.66K decks
14%synergy
Nykthos, Shrine to Nyx
19%inclusion1.26K decks6.66K decks
-11%synergy
Access Tunnel
14%inclusion948 decks6.66K decks
11%synergy
Phyrexian Tower
14%inclusion918 decks6.66K decks
-12%synergy
Castle Locthwain
11%inclusion738 decks6.66K decks
-6%synergy
Crypt of Agadeem
10%inclusion691 decks6.66K decks
-1%synergy
War Room
9.2%inclusion610 decks6.66K decks
-7%synergy
Barren Moor
8.2%inclusion548 decks6.66K decks
-1%synergy
Secret Tunnel
8.1%inclusion261 decks3.21K decks
7%synergy
Shizo, Death's Storehouse
8.1%inclusion536 decks6.66K decks
-2%synergy
Temple of the False God
7.3%inclusion489 decks6.66K decks
-0%synergy
Takenuma, Abandoned Mire
6.3%inclusion417 decks6.66K decks
-9%synergy
Mana Artifacts
Sol Ring
78%inclusion5.18K decks6.66K decks
-8%synergy
Arcane Signet
48%inclusion3.22K decks6.66K decks
-13%synergy
Glistening Sphere
30%inclusion2K decks6.66K decks
29%synergy
Patchwork Banner
24%inclusion1.57K decks6.64K decks
19%synergy
Charcoal Diamond
21%inclusion1.40K decks6.66K decks
-1%synergy
Mind Stone
16%inclusion1.05K decks6.66K decks
-12%synergy
Staff of Compleation
15%inclusion1.01K decks6.66K decks
14%synergy
Heraldic Banner
14%inclusion931 decks6.66K decks
9%synergy
Phyrexian Atlas
10%inclusion698 decks6.66K decks
10%synergy
Thought Vessel
10%inclusion674 decks6.66K decks
-15%synergy
Caged Sun
8.3%inclusion550 decks6.66K decks
-3%synergy
Commander's Sphere
7.0%inclusion468 decks6.66K decks
-1%synergy
The Soul Stone
6.5%inclusion262 decks4K decks
-9%synergy
Gauntlet of Power
5.2%inclusion345 decks6.66K decks
2%synergy
Lands
Swamp
98%inclusion6.49K decks6.66K decks
2%synergy
Path of Ancestry
31%inclusion2.08K decks6.66K decks
26%synergy
Myriad Landscape
18%inclusion1.17K decks6.66K decks
-7%synergy
Cavern of Souls
14%inclusion899 decks6.66K decks
7%synergy
Big Apple, 3 a.m.
11%inclusion203 decks1.92K decks
9%synergy
Command Tower
10%inclusion660 decks6.66K decks
4%synergy
Malakir Rebirth
9.5%inclusion630 decks6.66K decks
-14%synergy
Fell the Profane
7.9%inclusion524 decks6.66K decks
-12%synergy
Evolving Wilds
6.1%inclusion407 decks6.66K decks
2%synergy
Escape Tunnel
5.6%inclusion376 decks6.66K decks
5%synergy
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