Karumonix, the Rat King (Commander) - Core Rats

Karumonix, the Rat King
Rank #393
37decks
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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Mana Artifacts
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Arnyn, Deathbloom Botanist
8.3%inclusion1 decks12 decks
6%synergy
Emeritus of Woe
8.3%inclusion1 decks12 decks
0%synergy
High Synergy Cards
Piper of the Swarm
92%inclusion34 decks37 decks
85%synergy
Ogre Slumlord
86%inclusion32 decks37 decks
77%synergy
Pack Rat
81%inclusion30 decks37 decks
75%synergy
Ichor Rats
76%inclusion28 decks37 decks
73%synergy
Blightbelly Rat
76%inclusion28 decks37 decks
72%synergy
Drown in Ichor
70%inclusion26 decks37 decks
67%synergy
Infectious Inquiry
68%inclusion25 decks37 decks
65%synergy
Typhoid Rats
68%inclusion25 decks37 decks
64%synergy
Lord Skitter, Sewer King
70%inclusion26 decks37 decks
62%synergy
Swarmyard
68%inclusion25 decks37 decks
62%synergy
Top Cards
Marrow-Gnawer
65%inclusion24 decks37 decks
61%synergy
Septic Rats
62%inclusion23 decks37 decks
60%synergy
Rancid Rats
62%inclusion23 decks37 decks
60%synergy
Crypt Rats
59%inclusion22 decks37 decks
55%synergy
Vraska's Fall
59%inclusion22 decks37 decks
56%synergy
Lord Skitter's Butcher
57%inclusion21 decks37 decks
54%synergy
Rat Colony
57%inclusion21 decks37 decks
51%synergy
Dark Ritual
54%inclusion20 decks37 decks
-13%synergy
Bontu's Monument
54%inclusion20 decks37 decks
26%synergy
Jet Medallion
54%inclusion20 decks37 decks
-8%synergy
Creatures
Tangled Colony
51%inclusion19 decks37 decks
48%synergy
Voracious Vermin
51%inclusion19 decks37 decks
48%synergy
Persistent Marshstalker
46%inclusion17 decks37 decks
43%synergy
Chittering Skitterling
43%inclusion16 decks37 decks
42%synergy
Wave of Rats
43%inclusion16 decks37 decks
41%synergy
Gnat Miser
43%inclusion16 decks37 decks
40%synergy
Stronghold Rats
43%inclusion16 decks37 decks
40%synergy
Engine Rat
41%inclusion15 decks37 decks
39%synergy
Ashcoat of the Shadow Swarm
41%inclusion15 decks37 decks
37%synergy
Ratcatcher
41%inclusion15 decks37 decks
37%synergy
Burglar Rat
38%inclusion14 decks37 decks
27%synergy
Ruin Rat
38%inclusion14 decks37 decks
37%synergy
Nezumi Cutthroat
32%inclusion12 decks37 decks
32%synergy
Changeling Outcast
32%inclusion12 decks37 decks
27%synergy
Rat King, Verminister
31%inclusion8 decks26 decks
28%synergy
Species Specialist
30%inclusion11 decks37 decks
26%synergy
Locust Miser
30%inclusion11 decks37 decks
28%synergy
Twisted Sewer-Witch
30%inclusion11 decks37 decks
28%synergy
Old Flitterfang
30%inclusion11 decks37 decks
29%synergy
Rat King, Pale Piper
27%inclusion6 decks22 decks
23%synergy
Swarm of Rats
27%inclusion10 decks37 decks
25%synergy
Pestilence Rats
27%inclusion10 decks37 decks
25%synergy
Ink-Eyes, Servant of Oni
24%inclusion9 decks37 decks
21%synergy
Nezumi Prowler
24%inclusion9 decks37 decks
23%synergy
Nashi, Moon Sage's Scion
24%inclusion9 decks37 decks
21%synergy
Ravenous Rats
22%inclusion8 decks37 decks
20%synergy
Gnawing Vermin
22%inclusion8 decks37 decks
20%synergy
Ruthless Radrat
22%inclusion8 decks37 decks
21%synergy
Mukotai Ambusher
22%inclusion8 decks37 decks
21%synergy
Razortooth Rats
22%inclusion8 decks37 decks
21%synergy
Chittering Witch
22%inclusion8 decks37 decks
17%synergy
Undercity Dire Rat
21%inclusion7 decks34 decks
19%synergy
Ayara, First of Locthwain
19%inclusion7 decks37 decks
-7%synergy
Skullsnatcher
19%inclusion7 decks37 decks
18%synergy
Valley Rotcaller
19%inclusion7 decks37 decks
16%synergy
Crypt Ghast
19%inclusion7 decks37 decks
-28%synergy
Relentless Rats
16%inclusion6 decks37 decks
14%synergy
Throat Slitter
16%inclusion6 decks37 decks
14%synergy
Nezumi Informant
16%inclusion6 decks37 decks
10%synergy
Elephant-Rat
15%inclusion5 decks34 decks
14%synergy
Rotting Rats
14%inclusion5 decks37 decks
10%synergy
Nezumi Graverobber
11%inclusion4 decks37 decks
9%synergy
Gray Merchant of Asphodel
11%inclusion4 decks37 decks
-40%synergy
Drainpipe Vermin
11%inclusion4 decks37 decks
9%synergy
Refurbished Familiar
8.1%inclusion3 decks37 decks
6%synergy
Chittering Rats
8.1%inclusion3 decks37 decks
8%synergy
Rabid Rats
8.1%inclusion3 decks37 decks
8%synergy
Nezumi Ronin
8.1%inclusion3 decks37 decks
8%synergy
Innocuous Rat
8.1%inclusion3 decks37 decks
7%synergy
Thornplate Intimidator
8.1%inclusion3 decks37 decks
7%synergy
Instants
Whisper of the Dross
49%inclusion18 decks37 decks
46%synergy
Defile
41%inclusion15 decks37 decks
5%synergy
Village Rites
38%inclusion14 decks37 decks
12%synergy
Grim Affliction
35%inclusion13 decks37 decks
33%synergy
Go for the Throat
27%inclusion10 decks37 decks
4%synergy
Anoint with Affliction
27%inclusion10 decks37 decks
26%synergy
Rat Out
24%inclusion9 decks37 decks
23%synergy
Deadly Dispute
19%inclusion7 decks37 decks
-7%synergy
Not Dead After All
16%inclusion6 decks37 decks
5%synergy
Tainted Strike
16%inclusion6 decks37 decks
13%synergy
Corrupted Conviction
16%inclusion6 decks37 decks
4%synergy
Unbury
11%inclusion3 decks27 decks
10%synergy
Virulent Wound
11%inclusion4 decks37 decks
10%synergy
Undying Malice
11%inclusion4 decks37 decks
1%synergy
Murder
11%inclusion4 decks37 decks
1%synergy
Infernal Grasp
11%inclusion4 decks37 decks
-14%synergy
Malakir Rebirth
11%inclusion4 decks37 decks
-12%synergy
Offer Immortality
11%inclusion4 decks37 decks
9%synergy
Tragic Slip
11%inclusion4 decks37 decks
-9%synergy
Withering Torment
11%inclusion4 decks37 decks
-21%synergy
Fell the Profane
8.1%inclusion3 decks37 decks
-11%synergy
Sheoldred's Edict
8.1%inclusion3 decks37 decks
-7%synergy
Supernatural Stamina
8.1%inclusion3 decks37 decks
1%synergy
Raise the Draugr
8.1%inclusion3 decks37 decks
7%synergy
Costly Plunder
8.1%inclusion3 decks37 decks
6%synergy
Foul-Tongue Shriek
8.1%inclusion3 decks37 decks
6%synergy
Baleful Mastery
8.1%inclusion3 decks37 decks
-0%synergy
Black Sun's Twilight
8.1%inclusion3 decks37 decks
5%synergy
Gravepurge
8.1%inclusion3 decks37 decks
7%synergy
Sudden Spoiling
8.1%inclusion3 decks37 decks
-0%synergy
Feign Death
8.1%inclusion3 decks37 decks
-0%synergy
Alesha's Legacy
5.7%inclusion2 decks35 decks
4%synergy
Imp's Mischief
5.4%inclusion2 decks37 decks
-19%synergy
Snuff Out
5.4%inclusion2 decks37 decks
-8%synergy
Consuming Corruption
5.4%inclusion2 decks37 decks
-10%synergy
Battle-Rage Blessing
5.4%inclusion2 decks37 decks
5%synergy
Doom Blade
5.4%inclusion2 decks37 decks
-2%synergy
Cabal Ritual
5.4%inclusion2 decks37 decks
-13%synergy
Culling the Weak
5.4%inclusion2 decks37 decks
-11%synergy
Altar's Reap
5.4%inclusion2 decks37 decks
3%synergy
Bitter Triumph
5.4%inclusion2 decks37 decks
-4%synergy
Darkness
5.4%inclusion2 decks37 decks
-5%synergy
Death Denied
5.4%inclusion2 decks37 decks
5%synergy
Sorceries
Phyresis Outbreak
51%inclusion19 decks37 decks
50%synergy
Feed the Swarm
51%inclusion19 decks37 decks
1%synergy
Crippling Fear
38%inclusion14 decks37 decks
35%synergy
Vat Emergence
35%inclusion13 decks37 decks
34%synergy
Revenge of the Rats
32%inclusion12 decks37 decks
29%synergy
Sign in Blood
30%inclusion11 decks37 decks
-5%synergy
Patriarch's Bidding
27%inclusion10 decks37 decks
23%synergy
Night's Whisper
27%inclusion10 decks37 decks
2%synergy
Swarmyard Massacre
24%inclusion9 decks37 decks
22%synergy
Kindred Dominance
24%inclusion9 decks37 decks
20%synergy
Spread the Sickness
22%inclusion8 decks37 decks
21%synergy
Feed the Infection
22%inclusion8 decks37 decks
21%synergy
Read the Bones
19%inclusion7 decks37 decks
2%synergy
Diabolic Tutor
16%inclusion6 decks37 decks
2%synergy
Unearth
16%inclusion6 decks37 decks
7%synergy
Echoing Return
16%inclusion6 decks37 decks
13%synergy
Victimize
11%inclusion4 decks37 decks
-16%synergy
Exsanguinate
11%inclusion4 decks37 decks
-14%synergy
Toxic Deluge
11%inclusion4 decks37 decks
-26%synergy
Bubbling Muck
8.1%inclusion3 decks37 decks
-7%synergy
Mutilate
8.1%inclusion3 decks37 decks
-8%synergy
Caress of Phyrexia
8.1%inclusion3 decks37 decks
7%synergy
Living Death
8.1%inclusion3 decks37 decks
-2%synergy
In Garruk's Wake
8.1%inclusion3 decks37 decks
4%synergy
Corrupt
8.1%inclusion3 decks37 decks
6%synergy
Geth's Summons
8.1%inclusion3 decks37 decks
8%synergy
Plague of Vermin
8.1%inclusion3 decks37 decks
6%synergy
Splinter's Technique
7.7%inclusion2 decks26 decks
6%synergy
Bloodline Bidding
7.4%inclusion2 decks27 decks
3%synergy
Diabolic Intent
5.4%inclusion2 decks37 decks
-10%synergy
Torment of Hailfire
5.4%inclusion2 decks37 decks
-10%synergy
Return from Extinction
5.4%inclusion2 decks37 decks
5%synergy
Decree of Pain
5.4%inclusion2 decks37 decks
0%synergy
Reanimate
5.4%inclusion2 decks37 decks
-35%synergy
Gruesome Realization
5.4%inclusion2 decks37 decks
3%synergy
Lab Rats
5.4%inclusion2 decks37 decks
5%synergy
Disentomb
5.4%inclusion2 decks37 decks
4%synergy
Secret Salvage
5.4%inclusion2 decks37 decks
4%synergy
Utility Artifacts
Herald's Horn
51%inclusion19 decks37 decks
46%synergy
Contagion Clasp
32%inclusion12 decks37 decks
30%synergy
Vanquisher's Banner
32%inclusion12 decks37 decks
29%synergy
Swiftfoot Boots
32%inclusion12 decks37 decks
1%synergy
Skullclamp
30%inclusion11 decks37 decks
7%synergy
Whip of Erebos
22%inclusion8 decks37 decks
11%synergy
Prosthetic Injector
22%inclusion8 decks37 decks
21%synergy
Thrumming Stone
22%inclusion8 decks37 decks
18%synergy
Contagion Engine
19%inclusion7 decks37 decks
17%synergy
Door of Destinies
19%inclusion7 decks37 decks
17%synergy
Lightning Greaves
16%inclusion6 decks37 decks
-17%synergy
Chronicle of Victory
11%inclusion3 decks27 decks
8%synergy
Ashnod's Altar
11%inclusion4 decks37 decks
-9%synergy
Grafted Exoskeleton
11%inclusion4 decks37 decks
10%synergy
Vat of Rebirth
8.1%inclusion3 decks37 decks
5%synergy
Hall of Triumph
8.1%inclusion3 decks37 decks
8%synergy
Akroma's Memorial
8.1%inclusion3 decks37 decks
7%synergy
The Darkness Crystal
5.9%inclusion2 decks34 decks
-14%synergy
Wayfarer's Bauble
5.4%inclusion2 decks37 decks
-10%synergy
Cloudstone Curio
5.4%inclusion2 decks37 decks
5%synergy
Coat of Arms
5.4%inclusion2 decks37 decks
3%synergy
Trailblazer's Boots
5.4%inclusion2 decks37 decks
3%synergy
Stoneforge Masterwork
5.4%inclusion2 decks37 decks
5%synergy
Banner of Kinship
5.4%inclusion2 decks37 decks
3%synergy
Whispersilk Cloak
5.4%inclusion2 decks37 decks
-1%synergy
Blade of Selves
5.4%inclusion2 decks37 decks
4%synergy
Mask of Avacyn
5.4%inclusion2 decks37 decks
5%synergy
Urza's Incubator
5.4%inclusion2 decks37 decks
3%synergy
Nihil Spellbomb
5.4%inclusion2 decks37 decks
5%synergy
Basilisk Collar
5.4%inclusion2 decks37 decks
3%synergy
Enchantments
Necrogen Communion
46%inclusion17 decks37 decks
44%synergy
Cover of Darkness
32%inclusion12 decks37 decks
29%synergy
Phyrexian Arena
32%inclusion12 decks37 decks
-7%synergy
Phyresis
27%inclusion10 decks37 decks
25%synergy
Oversold Cemetery
24%inclusion9 decks37 decks
19%synergy
Vampiric Rites
19%inclusion7 decks37 decks
13%synergy
Grave Pact
19%inclusion7 decks37 decks
-1%synergy
Black Market Connections
16%inclusion6 decks37 decks
-8%synergy
Phyrexian Reclamation
14%inclusion5 decks37 decks
4%synergy
Haunted One
14%inclusion5 decks37 decks
11%synergy
Black Market
8.1%inclusion3 decks37 decks
-13%synergy
Underworld Connections
8.1%inclusion3 decks37 decks
6%synergy
Dictate of Erebos
8.1%inclusion3 decks37 decks
-3%synergy
Intimidation
8.1%inclusion3 decks37 decks
8%synergy
Demonic Vigor
5.4%inclusion2 decks37 decks
5%synergy
The Meathook Massacre
5.4%inclusion2 decks37 decks
-12%synergy
Glistening Oil
5.4%inclusion2 decks37 decks
5%synergy
Relic Putrescence
5.4%inclusion2 decks37 decks
5%synergy
Tribute to Horobi
5.4%inclusion2 decks37 decks
4%synergy
Carnival of Souls
5.4%inclusion2 decks37 decks
4%synergy
Eternal Thirst
5.4%inclusion2 decks37 decks
3%synergy
Kaya's Ghostform
5.4%inclusion2 decks37 decks
-5%synergy
Snake Cult Initiation
5.4%inclusion2 decks37 decks
5%synergy
Demonic Embrace
5.4%inclusion2 decks37 decks
5%synergy
Lord Skitter's Blessing
5.4%inclusion2 decks37 decks
5%synergy
Dark Prophecy
5.4%inclusion2 decks37 decks
2%synergy
Bad Moon
5.4%inclusion2 decks37 decks
2%synergy
Planeswalkers
Vraska, Betrayal's Sting
32%inclusion12 decks37 decks
30%synergy
Liliana of the Dark Realms
22%inclusion8 decks37 decks
8%synergy
Utility Lands
Karn's Bastion
51%inclusion19 decks37 decks
48%synergy
Rogue's Passage
51%inclusion19 decks37 decks
32%synergy
Mudflat Village
46%inclusion17 decks37 decks
43%synergy
Bojuka Bog
43%inclusion16 decks37 decks
-4%synergy
Cabal Stronghold
38%inclusion14 decks37 decks
3%synergy
Cabal Coffers
32%inclusion12 decks37 decks
-22%synergy
Reliquary Tower
30%inclusion11 decks37 decks
-0%synergy
Three Tree City
30%inclusion11 decks37 decks
25%synergy
Mortuary Mire
27%inclusion10 decks37 decks
14%synergy
Urborg, Tomb of Yawgmoth
27%inclusion10 decks37 decks
-11%synergy
Witch's Cottage
24%inclusion9 decks37 decks
-0%synergy
Access Tunnel
24%inclusion9 decks37 decks
21%synergy
Secret Tunnel
23%inclusion7 decks31 decks
21%synergy
Nykthos, Shrine to Nyx
16%inclusion6 decks37 decks
-14%synergy
Shizo, Death's Storehouse
14%inclusion5 decks37 decks
3%synergy
Phyrexian Tower
14%inclusion5 decks37 decks
-12%synergy
Barren Moor
14%inclusion5 decks37 decks
4%synergy
Crypt of Agadeem
14%inclusion5 decks37 decks
2%synergy
The Dross Pits
14%inclusion5 decks37 decks
12%synergy
War Room
11%inclusion4 decks37 decks
-5%synergy
Minas Morgul, Dark Fortress
11%inclusion4 decks37 decks
8%synergy
Castle Locthwain
11%inclusion4 decks37 decks
-6%synergy
Desert of the Glorified
8.1%inclusion3 decks37 decks
6%synergy
Susur Secundi, Void Altar
5.9%inclusion2 decks34 decks
-1%synergy
Vault of Whispers
5.4%inclusion2 decks37 decks
0%synergy
Mage-Ring Network
5.4%inclusion2 decks37 decks
5%synergy
Memorial to Folly
5.4%inclusion2 decks37 decks
2%synergy
Inkmoth Nexus
5.4%inclusion2 decks37 decks
4%synergy
Piranha Marsh
5.4%inclusion2 decks37 decks
5%synergy
Polluted Mire
5.4%inclusion2 decks37 decks
2%synergy
Deserted Temple
5.4%inclusion2 decks37 decks
1%synergy
Blighted Fen
5.4%inclusion2 decks37 decks
5%synergy
Temple of the False God
5.4%inclusion2 decks37 decks
-2%synergy
Mana Artifacts
Sol Ring
59%inclusion22 decks37 decks
-26%synergy
Arcane Signet
41%inclusion15 decks37 decks
-21%synergy
Glistening Sphere
38%inclusion14 decks37 decks
37%synergy
Staff of Compleation
19%inclusion7 decks37 decks
17%synergy
Charcoal Diamond
16%inclusion6 decks37 decks
-6%synergy
Heraldic Banner
16%inclusion6 decks37 decks
11%synergy
Patchwork Banner
16%inclusion6 decks37 decks
12%synergy
Phyrexian Atlas
14%inclusion5 decks37 decks
13%synergy
Mind Stone
11%inclusion4 decks37 decks
-18%synergy
The Soul Stone
8.8%inclusion3 decks34 decks
-6%synergy
Caged Sun
8.1%inclusion3 decks37 decks
-3%synergy
Gauntlet of Power
8.1%inclusion3 decks37 decks
5%synergy
Thought Vessel
8.1%inclusion3 decks37 decks
-17%synergy
Throne of Eldraine
5.4%inclusion2 decks37 decks
-4%synergy
Lands
Swamp
100%inclusion37 decks37 decks
5%synergy
Path of Ancestry
41%inclusion15 decks37 decks
35%synergy
Myriad Landscape
24%inclusion9 decks37 decks
-1%synergy
Cavern of Souls
16%inclusion6 decks37 decks
9%synergy
Escape Tunnel
11%inclusion4 decks37 decks
10%synergy
Malakir Rebirth
11%inclusion4 decks37 decks
-12%synergy
Big Apple, 3 a.m.
9.1%inclusion2 decks22 decks
7%synergy
Fell the Profane
8.1%inclusion3 decks37 decks
-11%synergy
Command Tower
5.4%inclusion2 decks37 decks
-0%synergy
Terramorphic Expanse
5.4%inclusion2 decks37 decks
3%synergy
Urza's Cave
5.4%inclusion2 decks37 decks
-3%synergy
Evolving Wilds
5.4%inclusion2 decks37 decks
2%synergy
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