Karumonix, the Rat King (Commander) - Core Rats

Karumonix, the Rat King
Rank #385
30decks
As CommanderAs CardAverage DeckDecks
Bracket
All12345
Budget
Any$$$$
Background image for Building Rat Typal With Marrow-Gnawer
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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Enchantments
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Utility Lands
Mana Artifacts
Lands
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Rat King, Pale Piper
27%inclusion4 decks15 decks
22%synergy
Rat King, Verminister
26%inclusion5 decks19 decks
23%synergy
Splinter's Technique
11%inclusion2 decks19 decks
9%synergy
Tunnel Rats
7.7%inclusion1 decks13 decks
7%synergy
Big Apple, 3 a.m.
6.7%inclusion1 decks15 decks
5%synergy
High Synergy Cards
Piper of the Swarm
93%inclusion28 decks30 decks
86%synergy
Blightbelly Rat
83%inclusion25 decks30 decks
80%synergy
Ichor Rats
77%inclusion23 decks30 decks
74%synergy
Ogre Slumlord
83%inclusion25 decks30 decks
73%synergy
Typhoid Rats
77%inclusion23 decks30 decks
73%synergy
Pack Rat
77%inclusion23 decks30 decks
71%synergy
Swarmyard
73%inclusion22 decks30 decks
68%synergy
Rancid Rats
70%inclusion21 decks30 decks
67%synergy
Drown in Ichor
70%inclusion21 decks30 decks
66%synergy
Septic Rats
67%inclusion20 decks30 decks
65%synergy
Top Cards
Lord Skitter, Sewer King
70%inclusion21 decks30 decks
62%synergy
Marrow-Gnawer
67%inclusion20 decks30 decks
63%synergy
Infectious Inquiry
67%inclusion20 decks30 decks
64%synergy
Vraska's Fall
60%inclusion18 decks30 decks
57%synergy
Lord Skitter's Butcher
60%inclusion18 decks30 decks
57%synergy
Dark Ritual
60%inclusion18 decks30 decks
-7%synergy
Rat Colony
60%inclusion18 decks30 decks
54%synergy
Crypt Rats
57%inclusion17 decks30 decks
52%synergy
Tangled Colony
57%inclusion17 decks30 decks
54%synergy
Bontu's Monument
57%inclusion17 decks30 decks
28%synergy
Creatures
Voracious Vermin
53%inclusion16 decks30 decks
50%synergy
Gnat Miser
53%inclusion16 decks30 decks
50%synergy
Wave of Rats
50%inclusion15 decks30 decks
48%synergy
Stronghold Rats
50%inclusion15 decks30 decks
46%synergy
Chittering Skitterling
47%inclusion14 decks30 decks
46%synergy
Persistent Marshstalker
43%inclusion13 decks30 decks
40%synergy
Engine Rat
43%inclusion13 decks30 decks
42%synergy
Ashcoat of the Shadow Swarm
43%inclusion13 decks30 decks
40%synergy
Ratcatcher
43%inclusion13 decks30 decks
40%synergy
Burglar Rat
40%inclusion12 decks30 decks
29%synergy
Locust Miser
37%inclusion11 decks30 decks
35%synergy
Ruin Rat
37%inclusion11 decks30 decks
35%synergy
Twisted Sewer-Witch
33%inclusion10 decks30 decks
32%synergy
Nezumi Cutthroat
33%inclusion10 decks30 decks
33%synergy
Changeling Outcast
33%inclusion10 decks30 decks
28%synergy
Old Flitterfang
33%inclusion10 decks30 decks
32%synergy
Species Specialist
30%inclusion9 decks30 decks
27%synergy
Swarm of Rats
30%inclusion9 decks30 decks
27%synergy
Ink-Eyes, Servant of Oni
27%inclusion8 decks30 decks
23%synergy
Ravenous Rats
23%inclusion7 decks30 decks
22%synergy
Gnawing Vermin
23%inclusion7 decks30 decks
22%synergy
Ruthless Radrat
23%inclusion7 decks30 decks
23%synergy
Ayara, First of Locthwain
23%inclusion7 decks30 decks
-2%synergy
Mukotai Ambusher
23%inclusion7 decks30 decks
22%synergy
Chittering Witch
23%inclusion7 decks30 decks
19%synergy
Nezumi Prowler
23%inclusion7 decks30 decks
22%synergy
Pestilence Rats
23%inclusion7 decks30 decks
21%synergy
Undercity Dire Rat
22%inclusion6 decks27 decks
20%synergy
Relentless Rats
20%inclusion6 decks30 decks
18%synergy
Razortooth Rats
20%inclusion6 decks30 decks
19%synergy
Crypt Ghast
20%inclusion6 decks30 decks
-28%synergy
Nezumi Informant
20%inclusion6 decks30 decks
13%synergy
Nashi, Moon Sage's Scion
20%inclusion6 decks30 decks
16%synergy
Skullsnatcher
17%inclusion5 decks30 decks
16%synergy
Throat Slitter
17%inclusion5 decks30 decks
15%synergy
Valley Rotcaller
17%inclusion5 decks30 decks
14%synergy
Elephant-Rat
15%inclusion4 decks27 decks
14%synergy
Rotting Rats
13%inclusion4 decks30 decks
10%synergy
Drainpipe Vermin
13%inclusion4 decks30 decks
12%synergy
Refurbished Familiar
10%inclusion3 decks30 decks
8%synergy
Chittering Rats
10%inclusion3 decks30 decks
9%synergy
Rabid Rats
10%inclusion3 decks30 decks
10%synergy
Nezumi Ronin
10%inclusion3 decks30 decks
10%synergy
Innocuous Rat
10%inclusion3 decks30 decks
9%synergy
Thornplate Intimidator
10%inclusion3 decks30 decks
9%synergy
Gray Merchant of Asphodel
10%inclusion3 decks30 decks
-41%synergy
Daggerfang Duo
10%inclusion3 decks30 decks
9%synergy
Insatiable Frugivore
10%inclusion3 decks30 decks
10%synergy
Zodiac Rat
10%inclusion3 decks30 decks
10%synergy
Nezumi Graverobber
6.7%inclusion2 decks30 decks
5%synergy
Instants
Whisper of the Dross
53%inclusion16 decks30 decks
51%synergy
Village Rites
43%inclusion13 decks30 decks
18%synergy
Defile
37%inclusion11 decks30 decks
0%synergy
Grim Affliction
30%inclusion9 decks30 decks
28%synergy
Rat Out
27%inclusion8 decks30 decks
25%synergy
Anoint with Affliction
27%inclusion8 decks30 decks
26%synergy
Go for the Throat
20%inclusion6 decks30 decks
-3%synergy
Not Dead After All
20%inclusion6 decks30 decks
9%synergy
Deadly Dispute
20%inclusion6 decks30 decks
-6%synergy
Tainted Strike
20%inclusion6 decks30 decks
17%synergy
Corrupted Conviction
17%inclusion5 decks30 decks
4%synergy
Undying Malice
13%inclusion4 decks30 decks
3%synergy
Murder
13%inclusion4 decks30 decks
3%synergy
Infernal Grasp
13%inclusion4 decks30 decks
-12%synergy
Sheoldred's Edict
10%inclusion3 decks30 decks
-5%synergy
Supernatural Stamina
10%inclusion3 decks30 decks
3%synergy
Costly Plunder
10%inclusion3 decks30 decks
8%synergy
Malakir Rebirth
10%inclusion3 decks30 decks
-13%synergy
Offer Immortality
10%inclusion3 decks30 decks
8%synergy
Feign Death
10%inclusion3 decks30 decks
2%synergy
Tragic Slip
10%inclusion3 decks30 decks
-10%synergy
Withering Torment
10%inclusion3 decks30 decks
-21%synergy
Imp's Mischief
6.7%inclusion2 decks30 decks
-18%synergy
Snuff Out
6.7%inclusion2 decks30 decks
-6%synergy
Doom Blade
6.7%inclusion2 decks30 decks
-1%synergy
Cabal Ritual
6.7%inclusion2 decks30 decks
-11%synergy
Altar's Reap
6.7%inclusion2 decks30 decks
4%synergy
Virulent Wound
6.7%inclusion2 decks30 decks
6%synergy
Bitter Triumph
6.7%inclusion2 decks30 decks
-3%synergy
Raise the Draugr
6.7%inclusion2 decks30 decks
6%synergy
Darkness
6.7%inclusion2 decks30 decks
-3%synergy
Death Denied
6.7%inclusion2 decks30 decks
6%synergy
Foul-Tongue Shriek
6.7%inclusion2 decks30 decks
5%synergy
Black Sun's Twilight
6.7%inclusion2 decks30 decks
3%synergy
Sudden Spoiling
6.7%inclusion2 decks30 decks
-2%synergy
Unbury
5.0%inclusion1 decks20 decks
4%synergy
Sorceries
Phyresis Outbreak
50%inclusion15 decks30 decks
48%synergy
Feed the Swarm
43%inclusion13 decks30 decks
-7%synergy
Vat Emergence
37%inclusion11 decks30 decks
35%synergy
Revenge of the Rats
37%inclusion11 decks30 decks
34%synergy
Patriarch's Bidding
33%inclusion10 decks30 decks
29%synergy
Crippling Fear
33%inclusion10 decks30 decks
30%synergy
Sign in Blood
30%inclusion9 decks30 decks
-6%synergy
Kindred Dominance
27%inclusion8 decks30 decks
22%synergy
Swarmyard Massacre
23%inclusion7 decks30 decks
21%synergy
Night's Whisper
23%inclusion7 decks30 decks
-1%synergy
Spread the Sickness
20%inclusion6 decks30 decks
19%synergy
Diabolic Tutor
20%inclusion6 decks30 decks
6%synergy
Unearth
20%inclusion6 decks30 decks
11%synergy
Feed the Infection
17%inclusion5 decks30 decks
16%synergy
Read the Bones
17%inclusion5 decks30 decks
0%synergy
Victimize
13%inclusion4 decks30 decks
-13%synergy
Echoing Return
13%inclusion4 decks30 decks
10%synergy
Exsanguinate
13%inclusion4 decks30 decks
-11%synergy
Toxic Deluge
13%inclusion4 decks30 decks
-23%synergy
Bubbling Muck
10%inclusion3 decks30 decks
-6%synergy
Living Death
10%inclusion3 decks30 decks
0%synergy
Geth's Summons
10%inclusion3 decks30 decks
10%synergy
Plague of Vermin
10%inclusion3 decks30 decks
8%synergy
Torment of Hailfire
6.7%inclusion2 decks30 decks
-9%synergy
Return from Extinction
6.7%inclusion2 decks30 decks
6%synergy
Mutilate
6.7%inclusion2 decks30 decks
-11%synergy
Decree of Pain
6.7%inclusion2 decks30 decks
1%synergy
Reanimate
6.7%inclusion2 decks30 decks
-33%synergy
In Garruk's Wake
6.7%inclusion2 decks30 decks
3%synergy
Corrupt
6.7%inclusion2 decks30 decks
4%synergy
Lab Rats
6.7%inclusion2 decks30 decks
6%synergy
Disentomb
6.7%inclusion2 decks30 decks
6%synergy
Bloodline Bidding
5.0%inclusion1 decks20 decks
0%synergy
Utility Artifacts
Jet Medallion
57%inclusion17 decks30 decks
-5%synergy
Herald's Horn
57%inclusion17 decks30 decks
51%synergy
Swiftfoot Boots
33%inclusion10 decks30 decks
2%synergy
Contagion Clasp
30%inclusion9 decks30 decks
28%synergy
Skullclamp
30%inclusion9 decks30 decks
8%synergy
Vanquisher's Banner
30%inclusion9 decks30 decks
26%synergy
Whip of Erebos
20%inclusion6 decks30 decks
9%synergy
Prosthetic Injector
20%inclusion6 decks30 decks
20%synergy
Thrumming Stone
20%inclusion6 decks30 decks
16%synergy
Lightning Greaves
20%inclusion6 decks30 decks
-14%synergy
Contagion Engine
17%inclusion5 decks30 decks
15%synergy
Door of Destinies
13%inclusion4 decks30 decks
11%synergy
Vat of Rebirth
10%inclusion3 decks30 decks
6%synergy
Ashnod's Altar
10%inclusion3 decks30 decks
-10%synergy
Blade of Selves
10%inclusion3 decks30 decks
9%synergy
Grafted Exoskeleton
10%inclusion3 decks30 decks
9%synergy
Coat of Arms
6.7%inclusion2 decks30 decks
4%synergy
Hall of Triumph
6.7%inclusion2 decks30 decks
6%synergy
Stoneforge Masterwork
6.7%inclusion2 decks30 decks
6%synergy
Akroma's Memorial
6.7%inclusion2 decks30 decks
6%synergy
Urza's Incubator
6.7%inclusion2 decks30 decks
5%synergy
Nihil Spellbomb
6.7%inclusion2 decks30 decks
6%synergy
Chronicle of Victory
5.0%inclusion1 decks20 decks
2%synergy
Enchantments
Necrogen Communion
50%inclusion15 decks30 decks
48%synergy
Cover of Darkness
40%inclusion12 decks30 decks
37%synergy
Phyrexian Arena
33%inclusion10 decks30 decks
-7%synergy
Phyresis
27%inclusion8 decks30 decks
25%synergy
Vampiric Rites
23%inclusion7 decks30 decks
17%synergy
Oversold Cemetery
23%inclusion7 decks30 decks
18%synergy
Grave Pact
20%inclusion6 decks30 decks
1%synergy
Black Market Connections
20%inclusion6 decks30 decks
-4%synergy
Haunted One
17%inclusion5 decks30 decks
14%synergy
Phyrexian Reclamation
13%inclusion4 decks30 decks
3%synergy
Black Market
10%inclusion3 decks30 decks
-11%synergy
Lord Skitter's Blessing
10%inclusion3 decks30 decks
9%synergy
Underworld Connections
6.7%inclusion2 decks30 decks
5%synergy
Glistening Oil
6.7%inclusion2 decks30 decks
6%synergy
Dictate of Erebos
6.7%inclusion2 decks30 decks
-4%synergy
Tribute to Horobi
6.7%inclusion2 decks30 decks
6%synergy
Kaya's Ghostform
6.7%inclusion2 decks30 decks
-3%synergy
Bad Moon
6.7%inclusion2 decks30 decks
3%synergy
Planeswalkers
Vraska, Betrayal's Sting
33%inclusion10 decks30 decks
31%synergy
Liliana of the Dark Realms
27%inclusion8 decks30 decks
13%synergy
Utility Lands
Karn's Bastion
50%inclusion15 decks30 decks
46%synergy
Rogue's Passage
50%inclusion15 decks30 decks
31%synergy
Bojuka Bog
40%inclusion12 decks30 decks
-7%synergy
Cabal Stronghold
40%inclusion12 decks30 decks
5%synergy
Mudflat Village
40%inclusion12 decks30 decks
37%synergy
Cabal Coffers
33%inclusion10 decks30 decks
-22%synergy
Mortuary Mire
30%inclusion9 decks30 decks
17%synergy
Reliquary Tower
30%inclusion9 decks30 decks
0%synergy
Three Tree City
30%inclusion9 decks30 decks
25%synergy
Urborg, Tomb of Yawgmoth
30%inclusion9 decks30 decks
-8%synergy
Witch's Cottage
23%inclusion7 decks30 decks
-1%synergy
Access Tunnel
23%inclusion7 decks30 decks
20%synergy
Phyrexian Tower
17%inclusion5 decks30 decks
-8%synergy
Nykthos, Shrine to Nyx
17%inclusion5 decks30 decks
-13%synergy
Castle Locthwain
17%inclusion5 decks30 decks
0%synergy
Secret Tunnel
17%inclusion4 decks24 decks
15%synergy
Shizo, Death's Storehouse
13%inclusion4 decks30 decks
3%synergy
Barren Moor
13%inclusion4 decks30 decks
4%synergy
Crypt of Agadeem
13%inclusion4 decks30 decks
2%synergy
The Dross Pits
13%inclusion4 decks30 decks
12%synergy
War Room
10%inclusion3 decks30 decks
-6%synergy
Minas Morgul, Dark Fortress
10%inclusion3 decks30 decks
7%synergy
Vault of Whispers
6.7%inclusion2 decks30 decks
1%synergy
Mage-Ring Network
6.7%inclusion2 decks30 decks
7%synergy
Desert of the Glorified
6.7%inclusion2 decks30 decks
4%synergy
Memorial to Folly
6.7%inclusion2 decks30 decks
3%synergy
Inkmoth Nexus
6.7%inclusion2 decks30 decks
6%synergy
Deserted Temple
6.7%inclusion2 decks30 decks
2%synergy
Blighted Fen
6.7%inclusion2 decks30 decks
6%synergy
Temple of the False God
6.7%inclusion2 decks30 decks
-1%synergy
Mana Artifacts
Sol Ring
60%inclusion18 decks30 decks
-26%synergy
Arcane Signet
43%inclusion13 decks30 decks
-18%synergy
Glistening Sphere
40%inclusion12 decks30 decks
39%synergy
Staff of Compleation
20%inclusion6 decks30 decks
18%synergy
Charcoal Diamond
13%inclusion4 decks30 decks
-9%synergy
Patchwork Banner
13%inclusion4 decks30 decks
9%synergy
Phyrexian Atlas
13%inclusion4 decks30 decks
13%synergy
Heraldic Banner
10%inclusion3 decks30 decks
5%synergy
The Soul Stone
7.4%inclusion2 decks27 decks
-7%synergy
Caged Sun
6.7%inclusion2 decks30 decks
-5%synergy
Gauntlet of Power
6.7%inclusion2 decks30 decks
3%synergy
Thought Vessel
6.7%inclusion2 decks30 decks
-19%synergy
Mind Stone
6.7%inclusion2 decks30 decks
-22%synergy
Lands
Swamp
100%inclusion30 decks30 decks
5%synergy
Path of Ancestry
40%inclusion12 decks30 decks
35%synergy
Myriad Landscape
27%inclusion8 decks30 decks
1%synergy
Cavern of Souls
17%inclusion5 decks30 decks
10%synergy
Escape Tunnel
10%inclusion3 decks30 decks
9%synergy
Malakir Rebirth
10%inclusion3 decks30 decks
-13%synergy
Command Tower
6.7%inclusion2 decks30 decks
1%synergy
Urza's Cave
6.7%inclusion2 decks30 decks
-2%synergy
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