Karumonix, the Rat King (Commander) - Proliferate

Karumonix, the Rat King
Rank #412
42decks
As CommanderAs CardAverage DeckDecks
Bracket
All123
4
5
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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Enchantments
Planeswalkers
Utility Lands
Mana Artifacts
Lands
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My Precious
6.3%inclusion1 decks16 decks
3%synergy
High Synergy Cards
Blightbelly Rat
90%inclusion38 decks42 decks
87%synergy
Ichor Rats
86%inclusion36 decks42 decks
83%synergy
Marrow-Gnawer
81%inclusion34 decks42 decks
77%synergy
Infectious Inquiry
79%inclusion33 decks42 decks
76%synergy
Drown in Ichor
79%inclusion33 decks42 decks
75%synergy
Piper of the Swarm
81%inclusion34 decks42 decks
74%synergy
Pack Rat
79%inclusion33 decks42 decks
73%synergy
Whisper of the Dross
74%inclusion31 decks42 decks
71%synergy
Tangled Colony
74%inclusion31 decks42 decks
71%synergy
Vraska's Fall
74%inclusion31 decks42 decks
71%synergy
Top Cards
Lord Skitter, Sewer King
79%inclusion33 decks42 decks
71%synergy
Ogre Slumlord
74%inclusion31 decks42 decks
64%synergy
Typhoid Rats
74%inclusion31 decks42 decks
70%synergy
Dark Ritual
71%inclusion30 decks42 decks
4%synergy
Rancid Rats
71%inclusion30 decks42 decks
69%synergy
Crypt Rats
69%inclusion29 decks42 decks
65%synergy
Lord Skitter's Butcher
67%inclusion28 decks42 decks
64%synergy
Septic Rats
64%inclusion27 decks42 decks
63%synergy
Persistent Marshstalker
60%inclusion25 decks42 decks
57%synergy
Phyresis Outbreak
57%inclusion24 decks42 decks
56%synergy
Game Changers
Bolas's Citadel
7.1%inclusion3 decks42 decks
-21%synergy
Creatures
Rat Colony
57%inclusion24 decks42 decks
52%synergy
Burglar Rat
52%inclusion22 decks42 decks
42%synergy
Voracious Vermin
52%inclusion22 decks42 decks
50%synergy
Stronghold Rats
52%inclusion22 decks42 decks
49%synergy
Ashcoat of the Shadow Swarm
40%inclusion17 decks42 decks
37%synergy
Gnat Miser
40%inclusion17 decks42 decks
38%synergy
Engine Rat
39%inclusion16 decks41 decks
37%synergy
Rat King, Verminister
38%inclusion10 decks26 decks
35%synergy
Nezumi Prowler
38%inclusion16 decks42 decks
37%synergy
Rat King, Pale Piper
36%inclusion9 decks25 decks
32%synergy
Chittering Skitterling
33%inclusion14 decks42 decks
32%synergy
Pestilence Rats
33%inclusion14 decks42 decks
32%synergy
Ink-Eyes, Servant of Oni
31%inclusion13 decks42 decks
28%synergy
Chittering Witch
31%inclusion13 decks42 decks
27%synergy
Ratcatcher
31%inclusion13 decks42 decks
28%synergy
Ravenous Rats
29%inclusion12 decks42 decks
27%synergy
Changeling Outcast
29%inclusion12 decks42 decks
24%synergy
Wave of Rats
29%inclusion12 decks42 decks
27%synergy
Nashi, Moon Sage's Scion
29%inclusion12 decks42 decks
25%synergy
Ruin Rat
29%inclusion12 decks42 decks
27%synergy
Throat Slitter
26%inclusion11 decks42 decks
25%synergy
Swarm of Rats
26%inclusion11 decks42 decks
24%synergy
Gnawing Vermin
24%inclusion10 decks42 decks
22%synergy
Nezumi Informant
24%inclusion10 decks42 decks
18%synergy
Mukotai Ambusher
21%inclusion9 decks42 decks
21%synergy
Nezumi Cutthroat
21%inclusion9 decks42 decks
21%synergy
Drainpipe Vermin
21%inclusion9 decks42 decks
20%synergy
Old Flitterfang
21%inclusion9 decks42 decks
20%synergy
Undercity Dire Rat
21%inclusion8 decks39 decks
19%synergy
Elephant-Rat
20%inclusion7 decks35 decks
20%synergy
Innocuous Rat
19%inclusion8 decks42 decks
18%synergy
Rotting Rats
19%inclusion8 decks42 decks
16%synergy
Species Specialist
19%inclusion8 decks42 decks
16%synergy
Skullsnatcher
19%inclusion8 decks42 decks
18%synergy
Ayara, First of Locthwain
17%inclusion7 decks42 decks
-8%synergy
Filth
17%inclusion7 decks42 decks
14%synergy
Zodiac Rat
17%inclusion7 decks42 decks
16%synergy
Valley Rotcaller
17%inclusion7 decks42 decks
14%synergy
Yawgmoth, Thran Physician
17%inclusion7 decks42 decks
7%synergy
Nezumi Graverobber
14%inclusion6 decks42 decks
13%synergy
Thornplate Intimidator
14%inclusion6 decks42 decks
14%synergy
Ruthless Radrat
14%inclusion6 decks42 decks
14%synergy
Nezumi Bladeblesser
14%inclusion6 decks42 decks
14%synergy
Daggerfang Duo
14%inclusion6 decks42 decks
14%synergy
Sinuous Vermin
14%inclusion6 decks42 decks
14%synergy
Locust Miser
14%inclusion6 decks42 decks
13%synergy
Twisted Sewer-Witch
14%inclusion6 decks42 decks
13%synergy
Crypt Ghast
14%inclusion6 decks42 decks
-33%synergy
Okiba-Gang Shinobi
14%inclusion6 decks42 decks
13%synergy
Razortooth Rats
12%inclusion5 decks42 decks
11%synergy
Instants
Grim Affliction
45%inclusion19 decks42 decks
43%synergy
Village Rites
36%inclusion15 decks42 decks
10%synergy
Rat Out
33%inclusion14 decks42 decks
32%synergy
Tainted Strike
33%inclusion14 decks42 decks
30%synergy
Defile
31%inclusion13 decks42 decks
-4%synergy
Go for the Throat
24%inclusion10 decks42 decks
1%synergy
Anoint with Affliction
21%inclusion9 decks42 decks
21%synergy
Deadly Dispute
21%inclusion9 decks42 decks
-6%synergy
Murder
21%inclusion9 decks42 decks
12%synergy
Tragic Slip
19%inclusion8 decks42 decks
0%synergy
Culling the Weak
17%inclusion7 decks42 decks
-2%synergy
Malakir Rebirth
17%inclusion7 decks42 decks
-7%synergy
Corrupted Conviction
17%inclusion7 decks42 decks
4%synergy
Withering Torment
17%inclusion7 decks42 decks
-15%synergy
Virulent Wound
14%inclusion6 decks42 decks
14%synergy
Infernal Grasp
14%inclusion6 decks42 decks
-11%synergy
Fell the Profane
12%inclusion5 decks42 decks
-8%synergy
Doom Blade
12%inclusion5 decks42 decks
5%synergy
Deadly Rollick
10%inclusion4 decks42 decks
-16%synergy
Consuming Corruption
10%inclusion4 decks42 decks
-6%synergy
Cabal Ritual
10%inclusion4 decks42 decks
-9%synergy
Darkness
10%inclusion4 decks42 decks
-1%synergy
Foul-Tongue Shriek
10%inclusion4 decks42 decks
8%synergy
Sheoldred's Edict
7.1%inclusion3 decks42 decks
-8%synergy
Not Dead After All
7.1%inclusion3 decks42 decks
-4%synergy
Songs of the Damned
7.1%inclusion3 decks42 decks
1%synergy
Undying Malice
7.1%inclusion3 decks42 decks
-3%synergy
Offer Immortality
7.1%inclusion3 decks42 decks
5%synergy
Nameless Inversion
7.1%inclusion3 decks42 decks
7%synergy
Rabid Attack
5.0%inclusion1 decks20 decks
4%synergy
Sorceries
Feed the Swarm
43%inclusion18 decks42 decks
-7%synergy
Vat Emergence
40%inclusion17 decks42 decks
39%synergy
Sign in Blood
38%inclusion16 decks42 decks
3%synergy
Revenge of the Rats
36%inclusion15 decks42 decks
33%synergy
Crippling Fear
33%inclusion14 decks42 decks
31%synergy
Spread the Sickness
29%inclusion12 decks42 decks
28%synergy
Feed the Infection
26%inclusion11 decks42 decks
26%synergy
Kindred Dominance
26%inclusion11 decks42 decks
22%synergy
Swarmyard Massacre
24%inclusion10 decks42 decks
21%synergy
Night's Whisper
24%inclusion10 decks42 decks
-2%synergy
Read the Bones
21%inclusion9 decks42 decks
6%synergy
Bloodline Bidding
19%inclusion5 decks26 decks
15%synergy
Splinter's Technique
19%inclusion5 decks26 decks
17%synergy
Victimize
17%inclusion7 decks42 decks
-11%synergy
Psychic Whorl
17%inclusion7 decks42 decks
16%synergy
Caress of Phyrexia
17%inclusion7 decks42 decks
16%synergy
Lab Rats
17%inclusion7 decks42 decks
16%synergy
Plague of Vermin
17%inclusion7 decks42 decks
14%synergy
Unearth
14%inclusion6 decks42 decks
5%synergy
Toxic Deluge
14%inclusion6 decks42 decks
-23%synergy
Patriarch's Bidding
12%inclusion5 decks42 decks
8%synergy
Bubbling Muck
12%inclusion5 decks42 decks
-4%synergy
Diabolic Tutor
10%inclusion4 decks42 decks
-4%synergy
Fell
10%inclusion4 decks42 decks
6%synergy
Pact of the Serpent
10%inclusion4 decks42 decks
8%synergy
Diabolic Intent
7.1%inclusion3 decks42 decks
-8%synergy
Haunting Voyage
7.1%inclusion3 decks42 decks
6%synergy
Echoing Return
7.1%inclusion3 decks42 decks
4%synergy
Mutilate
7.1%inclusion3 decks42 decks
-8%synergy
Reanimate
7.1%inclusion3 decks42 decks
-34%synergy
Syphon Mind
7.1%inclusion3 decks42 decks
-5%synergy
Insatiable Avarice
7.1%inclusion3 decks42 decks
-3%synergy
Geth's Summons
7.1%inclusion3 decks42 decks
7%synergy
Gruesome Fate
7.1%inclusion3 decks42 decks
5%synergy
Beseech the Queen
7.1%inclusion3 decks42 decks
1%synergy
Damnation
7.1%inclusion3 decks42 decks
-13%synergy
Utility Artifacts
Bontu's Monument
50%inclusion21 decks42 decks
22%synergy
Jet Medallion
50%inclusion21 decks42 decks
-12%synergy
Contagion Clasp
45%inclusion19 decks42 decks
43%synergy
Herald's Horn
36%inclusion15 decks42 decks
30%synergy
Contagion Engine
33%inclusion14 decks42 decks
32%synergy
Swiftfoot Boots
21%inclusion9 decks42 decks
-10%synergy
Skullclamp
19%inclusion8 decks42 decks
-3%synergy
Banner of Kinship
17%inclusion7 decks42 decks
15%synergy
Prosthetic Injector
14%inclusion6 decks42 decks
14%synergy
Icon of Ancestry
12%inclusion5 decks42 decks
11%synergy
Vanquisher's Banner
12%inclusion5 decks42 decks
8%synergy
Whispersilk Cloak
12%inclusion5 decks42 decks
6%synergy
Lightning Greaves
12%inclusion5 decks42 decks
-22%synergy
The Darkness Crystal
10%inclusion4 decks39 decks
-10%synergy
Whip of Erebos
10%inclusion4 decks42 decks
-1%synergy
Coat of Arms
10%inclusion4 decks42 decks
7%synergy
Door of Destinies
10%inclusion4 decks42 decks
7%synergy
Grafted Exoskeleton
10%inclusion4 decks42 decks
8%synergy
Chronicle of Victory
7.7%inclusion2 decks26 decks
5%synergy
Ashnod's Altar
7.1%inclusion3 decks42 decks
-13%synergy
Throne of Geth
7.1%inclusion3 decks42 decks
7%synergy
Sword of Truth and Justice
7.1%inclusion3 decks42 decks
6%synergy
Expedition Map
7.1%inclusion3 decks42 decks
-4%synergy
Thornbite Staff
7.1%inclusion3 decks42 decks
4%synergy
Enchantments
Necrogen Communion
55%inclusion23 decks42 decks
53%synergy
Cover of Darkness
50%inclusion21 decks42 decks
47%synergy
Phyrexian Arena
38%inclusion16 decks42 decks
-1%synergy
Phyresis
26%inclusion11 decks42 decks
24%synergy
Bad Moon
24%inclusion10 decks42 decks
21%synergy
Oversold Cemetery
19%inclusion8 decks42 decks
14%synergy
Haunted One
14%inclusion6 decks42 decks
12%synergy
Black Market Connections
14%inclusion6 decks42 decks
-11%synergy
Lord Skitter's Blessing
14%inclusion6 decks42 decks
14%synergy
Kaya's Ghostform
12%inclusion5 decks42 decks
2%synergy
Black Market
10%inclusion4 decks42 decks
-11%synergy
Grave Pact
10%inclusion4 decks42 decks
-10%synergy
Relic Putrescence
10%inclusion4 decks42 decks
9%synergy
Tribute to Horobi
10%inclusion4 decks42 decks
9%synergy
Glistening Oil
7.1%inclusion3 decks42 decks
6%synergy
Phyrexian Reclamation
7.1%inclusion3 decks42 decks
-3%synergy
Vampiric Rites
7.1%inclusion3 decks42 decks
1%synergy
Call of the Ring
7.1%inclusion3 decks42 decks
5%synergy
Planeswalkers
Vraska, Betrayal's Sting
50%inclusion21 decks42 decks
47%synergy
Liliana of the Dark Realms
14%inclusion6 decks42 decks
1%synergy
Utility Lands
Swarmyard
69%inclusion29 decks42 decks
63%synergy
Karn's Bastion
67%inclusion28 decks42 decks
63%synergy
Bojuka Bog
52%inclusion22 decks42 decks
5%synergy
Mudflat Village
50%inclusion21 decks42 decks
47%synergy
Witch's Cottage
40%inclusion17 decks42 decks
16%synergy
Cabal Coffers
40%inclusion17 decks42 decks
-14%synergy
Rogue's Passage
38%inclusion16 decks42 decks
19%synergy
Cabal Stronghold
31%inclusion13 decks42 decks
-3%synergy
Access Tunnel
31%inclusion13 decks42 decks
28%synergy
Mortuary Mire
26%inclusion11 decks42 decks
13%synergy
Reliquary Tower
24%inclusion10 decks42 decks
-5%synergy
Urborg, Tomb of Yawgmoth
21%inclusion9 decks42 decks
-16%synergy
Crypt of Agadeem
19%inclusion8 decks42 decks
7%synergy
Three Tree City
19%inclusion8 decks42 decks
14%synergy
Phyrexian Tower
17%inclusion7 decks42 decks
-10%synergy
Nykthos, Shrine to Nyx
14%inclusion6 decks42 decks
-16%synergy
Castle Locthwain
12%inclusion5 decks42 decks
-5%synergy
Secret Tunnel
10%inclusion3 decks30 decks
9%synergy
Shizo, Death's Storehouse
10%inclusion4 decks42 decks
-1%synergy
Barren Moor
10%inclusion4 decks42 decks
0%synergy
War Room
10%inclusion4 decks42 decks
-6%synergy
Minas Morgul, Dark Fortress
10%inclusion4 decks42 decks
6%synergy
Vault of Whispers
7.1%inclusion3 decks42 decks
2%synergy
The Black Gate
7.1%inclusion3 decks42 decks
4%synergy
Command Beacon
7.1%inclusion3 decks42 decks
-1%synergy
Peat Bog
7.1%inclusion3 decks42 decks
5%synergy
Takenuma, Abandoned Mire
7.1%inclusion3 decks42 decks
-9%synergy
Thespian's Stage
7.1%inclusion3 decks42 decks
2%synergy
Temple of the False God
7.1%inclusion3 decks42 decks
-0%synergy
Mana Artifacts
Sol Ring
81%inclusion34 decks42 decks
-4%synergy
Glistening Sphere
57%inclusion24 decks42 decks
56%synergy
Arcane Signet
40%inclusion17 decks42 decks
-21%synergy
Staff of Compleation
40%inclusion17 decks42 decks
39%synergy
Patchwork Banner
29%inclusion12 decks42 decks
24%synergy
Charcoal Diamond
17%inclusion7 decks42 decks
-5%synergy
Phyrexian Atlas
12%inclusion5 decks42 decks
12%synergy
Heraldic Banner
10%inclusion4 decks42 decks
4%synergy
Thought Vessel
10%inclusion4 decks42 decks
-15%synergy
Mind Stone
10%inclusion4 decks42 decks
-18%synergy
Commander's Sphere
7.1%inclusion3 decks42 decks
-0%synergy
Lands
Swamp
100%inclusion42 decks42 decks
5%synergy
Path of Ancestry
40%inclusion17 decks42 decks
36%synergy
Myriad Landscape
19%inclusion8 decks42 decks
-5%synergy
Escape Tunnel
17%inclusion7 decks42 decks
16%synergy
Malakir Rebirth
17%inclusion7 decks42 decks
-7%synergy
Fell the Profane
12%inclusion5 decks42 decks
-8%synergy
The Seedcore
10%inclusion4 decks42 decks
9%synergy
Cavern of Souls
10%inclusion4 decks42 decks
3%synergy
Evolving Wilds
10%inclusion4 decks42 decks
6%synergy
Big Apple, 3 a.m.
8.0%inclusion2 decks25 decks
6%synergy
Command Tower
7.1%inclusion3 decks42 decks
1%synergy
Urza's Cave
7.1%inclusion3 decks42 decks
-1%synergy
Ash Barrens
7.1%inclusion3 decks42 decks
6%synergy
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