Karumonix, the Rat King (Commander)

Karumonix, the Rat King
Rank #381
6,493decks
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
1.2%inclusion6 decks500 decks
-6%synergy
Decorum Dissertation
1.0%inclusion5 decks521 decks
-4%synergy
Pox Plague
0.8%inclusion4 decks510 decks
-4%synergy
Grave Researcher
0.6%inclusion4 decks626 decks
-6%synergy
Arnyn, Deathbloom Botanist
0.6%inclusion3 decks500 decks
-2%synergy
High Synergy Cards
Piper of the Swarm
81%inclusion5.25K decks6.49K decks
74%synergy
Blightbelly Rat
77%inclusion5K decks6.49K decks
74%synergy
Marrow-Gnawer
73%inclusion4.77K decks6.49K decks
70%synergy
Pack Rat
73%inclusion4.76K decks6.49K decks
67%synergy
Ogre Slumlord
75%inclusion4.88K decks6.49K decks
65%synergy
Ichor Rats
67%inclusion4.37K decks6.49K decks
64%synergy
Lord Skitter, Sewer King
67%inclusion4.37K decks6.49K decks
59%synergy
Infectious Inquiry
60%inclusion3.92K decks6.49K decks
58%synergy
Typhoid Rats
60%inclusion3.92K decks6.49K decks
57%synergy
Vraska's Fall
59%inclusion3.81K decks6.49K decks
55%synergy
Top Cards
Dark Ritual
57%inclusion3.67K decks6.49K decks
-10%synergy
Rat Colony
56%inclusion3.63K decks6.49K decks
50%synergy
Rancid Rats
56%inclusion3.63K decks6.49K decks
53%synergy
Lord Skitter's Butcher
55%inclusion3.60K decks6.49K decks
52%synergy
Crypt Rats
54%inclusion3.50K decks6.49K decks
49%synergy
Tangled Colony
54%inclusion3.49K decks6.49K decks
51%synergy
Drown in Ichor
54%inclusion3.49K decks6.49K decks
50%synergy
Bontu's Monument
53%inclusion3.46K decks6.49K decks
25%synergy
Septic Rats
53%inclusion3.44K decks6.49K decks
51%synergy
Jet Medallion
52%inclusion3.37K decks6.49K decks
-10%synergy
Game Changers
Demonic Tutor
21%inclusion1.36K decks6.49K decks
-6%synergy
Vampiric Tutor
15%inclusion986 decks6.49K decks
-6%synergy
Bolas's Citadel
15%inclusion964 decks6.49K decks
-14%synergy
Creatures
Burglar Rat
50%inclusion3.25K decks6.49K decks
39%synergy
Voracious Vermin
48%inclusion3.14K decks6.49K decks
45%synergy
Persistent Marshstalker
44%inclusion2.69K decks6.09K decks
41%synergy
Stronghold Rats
42%inclusion2.74K decks6.49K decks
38%synergy
Gnat Miser
41%inclusion2.67K decks6.49K decks
38%synergy
Ratcatcher
40%inclusion2.58K decks6.49K decks
36%synergy
Ashcoat of the Shadow Swarm
39%inclusion2.52K decks6.49K decks
35%synergy
Chittering Skitterling
38%inclusion2.50K decks6.49K decks
38%synergy
Wave of Rats
35%inclusion2.28K decks6.49K decks
33%synergy
Swarm of Rats
35%inclusion2.27K decks6.49K decks
32%synergy
Pestilence Rats
32%inclusion2.06K decks6.49K decks
30%synergy
Chittering Witch
31%inclusion2.01K decks6.49K decks
26%synergy
Ink-Eyes, Servant of Oni
29%inclusion1.90K decks6.49K decks
26%synergy
Nezumi Prowler
29%inclusion1.85K decks6.49K decks
27%synergy
Changeling Outcast
28%inclusion1.83K decks6.49K decks
23%synergy
Ruin Rat
28%inclusion1.81K decks6.49K decks
27%synergy
Nezumi Informant
28%inclusion1.79K decks6.49K decks
21%synergy
Nashi, Moon Sage's Scion
27%inclusion1.76K decks6.49K decks
23%synergy
Rat King, Verminister
26%inclusion445 decks1.69K decks
23%synergy
Ravenous Rats
26%inclusion1.70K decks6.49K decks
24%synergy
Rat King, Pale Piper
25%inclusion315 decks1.27K decks
20%synergy
Engine Rat
24%inclusion1.20K decks4.92K decks
23%synergy
Gnawing Vermin
24%inclusion1.54K decks6.49K decks
22%synergy
Nezumi Cutthroat
23%inclusion1.50K decks6.49K decks
22%synergy
Drainpipe Vermin
22%inclusion1.43K decks6.49K decks
21%synergy
Old Flitterfang
22%inclusion1.40K decks6.49K decks
20%synergy
Valley Rotcaller
22%inclusion1.32K decks6.11K decks
19%synergy
Ayara, First of Locthwain
21%inclusion1.39K decks6.49K decks
-4%synergy
Twisted Sewer-Witch
21%inclusion1.39K decks6.49K decks
20%synergy
Razortooth Rats
20%inclusion1.33K decks6.49K decks
20%synergy
Throat Slitter
20%inclusion1.28K decks6.49K decks
18%synergy
Relentless Rats
20%inclusion1.28K decks6.49K decks
18%synergy
Ruthless Radrat
19%inclusion1.25K decks6.49K decks
18%synergy
Undercity Dire Rat
19%inclusion760 decks4.03K decks
17%synergy
Locust Miser
18%inclusion1.20K decks6.49K decks
17%synergy
Species Specialist
18%inclusion1.19K decks6.49K decks
15%synergy
Gray Merchant of Asphodel
16%inclusion1.07K decks6.49K decks
-35%synergy
Crypt Ghast
16%inclusion1.04K decks6.49K decks
-32%synergy
Innocuous Rat
15%inclusion878 decks5.70K decks
14%synergy
Mukotai Ambusher
14%inclusion940 decks6.49K decks
14%synergy
Rotting Rats
14%inclusion926 decks6.49K decks
11%synergy
Nezumi Graverobber
14%inclusion909 decks6.49K decks
13%synergy
Refurbished Familiar
13%inclusion843 decks6.36K decks
11%synergy
Nezumi Bladeblesser
13%inclusion814 decks6.49K decks
12%synergy
Sinuous Vermin
12%inclusion776 decks6.49K decks
11%synergy
Daggerfang Duo
11%inclusion659 decks6.05K decks
10%synergy
Skullsnatcher
11%inclusion703 decks6.49K decks
10%synergy
Okiba-Gang Shinobi
10%inclusion652 decks6.49K decks
9%synergy
Chittering Rats
10%inclusion637 decks6.49K decks
9%synergy
Adaptive Automaton
9.4%inclusion611 decks6.49K decks
8%synergy
Instants
Whisper of the Dross
46%inclusion2.97K decks6.49K decks
43%synergy
Village Rites
39%inclusion2.55K decks6.49K decks
14%synergy
Defile
36%inclusion2.32K decks6.49K decks
-1%synergy
Go for the Throat
29%inclusion1.86K decks6.49K decks
6%synergy
Grim Affliction
28%inclusion1.82K decks6.49K decks
26%synergy
Rat Out
27%inclusion1.75K decks6.49K decks
26%synergy
Corrupted Conviction
21%inclusion1.35K decks6.49K decks
8%synergy
Deadly Dispute
20%inclusion1.32K decks6.49K decks
-6%synergy
Tainted Strike
19%inclusion1.21K decks6.49K decks
16%synergy
Murder
19%inclusion1.21K decks6.49K decks
9%synergy
Infernal Grasp
16%inclusion1.06K decks6.49K decks
-9%synergy
Anoint with Affliction
16%inclusion1.03K decks6.49K decks
15%synergy
Tragic Slip
16%inclusion1.02K decks6.49K decks
-4%synergy
Deadly Rollick
14%inclusion907 decks6.49K decks
-10%synergy
Withering Torment
14%inclusion797 decks5.71K decks
-17%synergy
Foul-Tongue Shriek
13%inclusion820 decks6.49K decks
11%synergy
Consuming Corruption
11%inclusion682 decks6.38K decks
-5%synergy
Malakir Rebirth
9.4%inclusion612 decks6.49K decks
-14%synergy
Gravepurge
9.3%inclusion601 decks6.49K decks
8%synergy
Hero's Downfall
9.2%inclusion600 decks6.49K decks
2%synergy
Raise the Draugr
9.0%inclusion587 decks6.49K decks
8%synergy
Doom Blade
9.0%inclusion585 decks6.49K decks
2%synergy
Virulent Wound
8.8%inclusion571 decks6.49K decks
8%synergy
Fell the Profane
7.8%inclusion498 decks6.42K decks
-11%synergy
Sudden Spoiling
6.1%inclusion398 decks6.49K decks
-3%synergy
Cabal Ritual
5.9%inclusion381 decks6.49K decks
-12%synergy
Offer Immortality
5.8%inclusion374 decks6.49K decks
4%synergy
Altar's Reap
5.7%inclusion369 decks6.49K decks
3%synergy
Bitter Triumph
5.5%inclusion360 decks6.49K decks
-4%synergy
Not Dead After All
5.1%inclusion333 decks6.49K decks
-6%synergy
Culling the Weak
5.1%inclusion331 decks6.49K decks
-11%synergy
Death Denied
5.0%inclusion326 decks6.49K decks
4%synergy
Sorceries
Phyresis Outbreak
40%inclusion2.61K decks6.49K decks
39%synergy
Revenge of the Rats
39%inclusion2.12K decks5.42K decks
36%synergy
Feed the Swarm
36%inclusion2.36K decks6.49K decks
-14%synergy
Crippling Fear
31%inclusion2.04K decks6.49K decks
28%synergy
Patriarch's Bidding
29%inclusion1.90K decks6.49K decks
25%synergy
Sign in Blood
29%inclusion1.89K decks6.49K decks
-6%synergy
Kindred Dominance
26%inclusion1.69K decks6.49K decks
21%synergy
Vat Emergence
26%inclusion1.68K decks6.49K decks
24%synergy
Swarmyard Massacre
19%inclusion1.17K decks6.05K decks
17%synergy
Bloodline Bidding
19%inclusion368 decks1.91K decks
15%synergy
Spread the Sickness
19%inclusion1.24K decks6.49K decks
18%synergy
Night's Whisper
16%inclusion1.06K decks6.49K decks
-8%synergy
Read the Bones
15%inclusion977 decks6.49K decks
-2%synergy
Diabolic Tutor
14%inclusion917 decks6.49K decks
0%synergy
Feed the Infection
13%inclusion837 decks6.49K decks
12%synergy
Echoing Return
13%inclusion829 decks6.49K decks
10%synergy
Victimize
11%inclusion746 decks6.49K decks
-15%synergy
Toxic Deluge
11%inclusion729 decks6.49K decks
-26%synergy
Unearth
11%inclusion722 decks6.49K decks
2%synergy
Plague of Vermin
11%inclusion722 decks6.49K decks
9%synergy
Damnation
11%inclusion706 decks6.49K decks
-10%synergy
Diabolic Intent
11%inclusion688 decks6.49K decks
-4%synergy
Gruesome Fate
10%inclusion644 decks6.49K decks
8%synergy
Caress of Phyrexia
9.1%inclusion593 decks6.49K decks
8%synergy
Reanimate
9.1%inclusion588 decks6.49K decks
-31%synergy
Geth's Summons
9.0%inclusion582 decks6.49K decks
9%synergy
Lab Rats
8.1%inclusion529 decks6.49K decks
8%synergy
Mutilate
7.4%inclusion480 decks6.49K decks
-9%synergy
Pact of the Serpent
6.9%inclusion448 decks6.49K decks
5%synergy
Return from Extinction
6.3%inclusion410 decks6.49K decks
6%synergy
Grim Tutor
6.3%inclusion407 decks6.49K decks
-5%synergy
Fell
6.2%inclusion380 decks6.11K decks
3%synergy
Forever Young
6.2%inclusion401 decks6.49K decks
5%synergy
Bubbling Muck
6.0%inclusion391 decks6.49K decks
-9%synergy
Haunting Voyage
5.3%inclusion347 decks6.49K decks
4%synergy
Insatiable Avarice
5.2%inclusion335 decks6.49K decks
-6%synergy
Utility Artifacts
Herald's Horn
45%inclusion2.89K decks6.49K decks
39%synergy
Skullclamp
33%inclusion2.17K decks6.49K decks
11%synergy
Vanquisher's Banner
31%inclusion2K decks6.49K decks
27%synergy
Contagion Clasp
27%inclusion1.78K decks6.49K decks
25%synergy
Thrumming Stone
23%inclusion1.47K decks6.49K decks
19%synergy
Swiftfoot Boots
18%inclusion1.19K decks6.49K decks
-13%synergy
Lightning Greaves
15%inclusion971 decks6.49K decks
-19%synergy
Coat of Arms
14%inclusion940 decks6.49K decks
12%synergy
Contagion Engine
14%inclusion938 decks6.49K decks
13%synergy
Door of Destinies
13%inclusion818 decks6.49K decks
10%synergy
Banner of Kinship
12%inclusion652 decks5.43K decks
10%synergy
Chronicle of Victory
12%inclusion231 decks1.93K decks
9%synergy
Whip of Erebos
12%inclusion772 decks6.49K decks
1%synergy
Icon of Ancestry
11%inclusion710 decks6.49K decks
10%synergy
The Darkness Crystal
10%inclusion419 decks4.06K decks
-10%synergy
Eldrazi Monument
7.7%inclusion503 decks6.49K decks
6%synergy
Grafted Exoskeleton
7.5%inclusion490 decks6.49K decks
6%synergy
Ashnod's Altar
7.2%inclusion468 decks6.49K decks
-13%synergy
Prosthetic Injector
7.2%inclusion468 decks6.49K decks
7%synergy
Wayfarer's Bauble
6.8%inclusion443 decks6.49K decks
-8%synergy
Thornbite Staff
6.2%inclusion403 decks6.49K decks
3%synergy
Gathering Stone
6.1%inclusion116 decks1.91K decks
5%synergy
Sword of the Squeak
5.3%inclusion318 decks6.05K decks
5%synergy
Enchantments
Phyrexian Arena
36%inclusion2.32K decks6.49K decks
-4%synergy
Necrogen Communion
36%inclusion2.31K decks6.49K decks
34%synergy
Cover of Darkness
32%inclusion2.07K decks6.49K decks
29%synergy
Bad Moon
22%inclusion1.40K decks6.49K decks
18%synergy
Oversold Cemetery
18%inclusion1.20K decks6.49K decks
13%synergy
Phyresis
18%inclusion1.15K decks6.49K decks
16%synergy
Haunted One
17%inclusion1.13K decks6.49K decks
15%synergy
Grave Pact
17%inclusion1.11K decks6.49K decks
-2%synergy
Black Market
16%inclusion1.02K decks6.49K decks
-5%synergy
Black Market Connections
14%inclusion879 decks6.49K decks
-10%synergy
Tribute to Horobi
13%inclusion814 decks6.49K decks
12%synergy
Vampiric Rites
10%inclusion637 decks6.49K decks
4%synergy
Lord Skitter's Blessing
8.0%inclusion519 decks6.49K decks
7%synergy
Dictate of Erebos
7.4%inclusion481 decks6.49K decks
-4%synergy
Intimidation
6.7%inclusion437 decks6.49K decks
6%synergy
Phyrexian Reclamation
6.2%inclusion405 decks6.49K decks
-4%synergy
The Meathook Massacre
5.8%inclusion377 decks6.49K decks
-12%synergy
Dark Prophecy
5.1%inclusion331 decks6.49K decks
1%synergy
Planeswalkers
Vraska, Betrayal's Sting
28%inclusion1.80K decks6.49K decks
25%synergy
Liliana of the Dark Realms
9.2%inclusion598 decks6.49K decks
-5%synergy
Utility Lands
Swarmyard
53%inclusion3.47K decks6.49K decks
48%synergy
Karn's Bastion
43%inclusion2.78K decks6.49K decks
39%synergy
Bojuka Bog
41%inclusion2.69K decks6.49K decks
-5%synergy
Cabal Coffers
39%inclusion2.54K decks6.49K decks
-16%synergy
Rogue's Passage
36%inclusion2.35K decks6.49K decks
17%synergy
Mudflat Village
34%inclusion2.08K decks6.16K decks
31%synergy
Witch's Cottage
26%inclusion1.67K decks6.49K decks
1%synergy
Cabal Stronghold
24%inclusion1.57K decks6.49K decks
-10%synergy
Reliquary Tower
22%inclusion1.46K decks6.49K decks
-8%synergy
Mortuary Mire
22%inclusion1.42K decks6.49K decks
9%synergy
Urborg, Tomb of Yawgmoth
22%inclusion1.42K decks6.49K decks
-16%synergy
Three Tree City
19%inclusion1.16K decks6.11K decks
14%synergy
Nykthos, Shrine to Nyx
19%inclusion1.23K decks6.49K decks
-11%synergy
Access Tunnel
14%inclusion925 decks6.49K decks
11%synergy
Phyrexian Tower
13%inclusion869 decks6.49K decks
-12%synergy
Castle Locthwain
11%inclusion720 decks6.49K decks
-6%synergy
Crypt of Agadeem
10%inclusion649 decks6.49K decks
-1%synergy
War Room
8.9%inclusion580 decks6.49K decks
-7%synergy
Barren Moor
8.5%inclusion553 decks6.49K decks
-1%synergy
Shizo, Death's Storehouse
8.1%inclusion526 decks6.49K decks
-2%synergy
Secret Tunnel
8.0%inclusion207 decks2.60K decks
7%synergy
Temple of the False God
7.5%inclusion486 decks6.49K decks
0%synergy
Takenuma, Abandoned Mire
6.0%inclusion391 decks6.49K decks
-10%synergy
The Dross Pits
5.1%inclusion331 decks6.49K decks
4%synergy
Mana Artifacts
Sol Ring
78%inclusion5.05K decks6.49K decks
-8%synergy
Arcane Signet
48%inclusion3.15K decks6.49K decks
-13%synergy
Glistening Sphere
30%inclusion1.98K decks6.49K decks
29%synergy
Patchwork Banner
24%inclusion1.44K decks6.07K decks
19%synergy
Charcoal Diamond
22%inclusion1.41K decks6.49K decks
-1%synergy
Mind Stone
16%inclusion1.04K decks6.49K decks
-13%synergy
Staff of Compleation
15%inclusion989 decks6.49K decks
14%synergy
Heraldic Banner
14%inclusion932 decks6.49K decks
9%synergy
Phyrexian Atlas
11%inclusion694 decks6.49K decks
10%synergy
Thought Vessel
10%inclusion669 decks6.49K decks
-15%synergy
Caged Sun
9.0%inclusion584 decks6.49K decks
-2%synergy
Commander's Sphere
7.3%inclusion472 decks6.49K decks
-1%synergy
The Soul Stone
6.7%inclusion227 decks3.40K decks
-8%synergy
Gauntlet of Power
5.5%inclusion354 decks6.49K decks
2%synergy
Lands
Swamp
98%inclusion6.34K decks6.49K decks
2%synergy
Path of Ancestry
32%inclusion2.06K decks6.49K decks
27%synergy
Myriad Landscape
18%inclusion1.18K decks6.49K decks
-7%synergy
Cavern of Souls
13%inclusion859 decks6.49K decks
6%synergy
Command Tower
10%inclusion662 decks6.49K decks
5%synergy
Big Apple, 3 a.m.
10%inclusion122 decks1.27K decks
8%synergy
Malakir Rebirth
9.4%inclusion612 decks6.49K decks
-14%synergy
Fell the Profane
7.8%inclusion498 decks6.42K decks
-11%synergy
Evolving Wilds
6.3%inclusion407 decks6.49K decks
2%synergy
Escape Tunnel
5.7%inclusion373 decks6.49K decks
5%synergy
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