Karumonix, the Rat King (Commander) - Rat Colony

Karumonix, the Rat King
Rank #384
703decks
As CommanderAs CardAverage DeckDecks
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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
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Rat King, Pale Piper
36%inclusion4 decks11 decks
32%synergy
Rat King, Verminister
36%inclusion5 decks14 decks
33%synergy
Big Apple, 3 a.m.
18%inclusion2 decks11 decks
16%synergy
Super Shredder
5.0%inclusion1 decks20 decks
3%synergy
High Synergy Cards
Rat Colony
100%inclusion702 decks703 decks
94%synergy
Marrow-Gnawer
80%inclusion562 decks703 decks
77%synergy
Piper of the Swarm
83%inclusion586 decks703 decks
76%synergy
Pack Rat
79%inclusion553 decks703 decks
73%synergy
Blightbelly Rat
73%inclusion511 decks703 decks
69%synergy
Ogre Slumlord
76%inclusion537 decks703 decks
66%synergy
Ichor Rats
67%inclusion474 decks703 decks
64%synergy
Lord Skitter, Sewer King
71%inclusion500 decks703 decks
63%synergy
Infectious Inquiry
58%inclusion408 decks703 decks
55%synergy
Vraska's Fall
58%inclusion408 decks703 decks
55%synergy
Top Cards
Bontu's Monument
63%inclusion444 decks703 decks
35%synergy
Jet Medallion
62%inclusion439 decks703 decks
1%synergy
Dark Ritual
61%inclusion427 decks703 decks
-6%synergy
Herald's Horn
53%inclusion375 decks703 decks
48%synergy
Crypt Rats
53%inclusion370 decks703 decks
48%synergy
Lord Skitter's Butcher
53%inclusion370 decks703 decks
49%synergy
Typhoid Rats
52%inclusion366 decks703 decks
48%synergy
Drown in Ichor
51%inclusion361 decks703 decks
47%synergy
Ashcoat of the Shadow Swarm
51%inclusion357 decks703 decks
47%synergy
Tangled Colony
50%inclusion352 decks703 decks
47%synergy
Game Changers
Demonic Tutor
32%inclusion227 decks703 decks
5%synergy
Vampiric Tutor
24%inclusion171 decks703 decks
3%synergy
Bolas's Citadel
21%inclusion145 decks703 decks
-8%synergy
Creatures
Septic Rats
48%inclusion340 decks703 decks
46%synergy
Rancid Rats
48%inclusion338 decks703 decks
46%synergy
Ratcatcher
47%inclusion330 decks703 decks
43%synergy
Voracious Vermin
45%inclusion317 decks703 decks
42%synergy
Burglar Rat
43%inclusion303 decks703 decks
32%synergy
Gnat Miser
39%inclusion275 decks703 decks
36%synergy
Swarm of Rats
38%inclusion267 decks703 decks
35%synergy
Persistent Marshstalker
38%inclusion183 decks482 decks
35%synergy
Stronghold Rats
37%inclusion257 decks703 decks
33%synergy
Wave of Rats
35%inclusion249 decks703 decks
34%synergy
Ink-Eyes, Servant of Oni
31%inclusion219 decks703 decks
28%synergy
Chittering Skitterling
31%inclusion217 decks703 decks
30%synergy
Nashi, Moon Sage's Scion
27%inclusion192 decks703 decks
23%synergy
Ayara, First of Locthwain
27%inclusion190 decks703 decks
1%synergy
Old Flitterfang
26%inclusion186 decks703 decks
25%synergy
Species Specialist
26%inclusion184 decks703 decks
23%synergy
Nezumi Informant
26%inclusion184 decks703 decks
19%synergy
Pestilence Rats
26%inclusion184 decks703 decks
24%synergy
Chittering Witch
25%inclusion173 decks703 decks
20%synergy
Ruthless Radrat
24%inclusion171 decks703 decks
24%synergy
Changeling Outcast
24%inclusion167 decks703 decks
19%synergy
Valley Rotcaller
21%inclusion104 decks492 decks
18%synergy
Ruin Rat
20%inclusion143 decks703 decks
19%synergy
Innocuous Rat
20%inclusion68 decks338 decks
19%synergy
Ravenous Rats
20%inclusion138 decks703 decks
18%synergy
Nezumi Prowler
20%inclusion138 decks703 decks
18%synergy
Gray Merchant of Asphodel
19%inclusion133 decks703 decks
-32%synergy
Gnawing Vermin
19%inclusion132 decks703 decks
17%synergy
Locust Miser
19%inclusion132 decks703 decks
17%synergy
Crypt Ghast
19%inclusion131 decks703 decks
-29%synergy
Twisted Sewer-Witch
18%inclusion129 decks703 decks
17%synergy
Throat Slitter
17%inclusion122 decks703 decks
15%synergy
Daggerfang Duo
14%inclusion68 decks470 decks
14%synergy
Relentless Rats
14%inclusion97 decks703 decks
12%synergy
Drainpipe Vermin
14%inclusion97 decks703 decks
12%synergy
Razortooth Rats
13%inclusion91 decks703 decks
12%synergy
Rotting Rats
13%inclusion90 decks703 decks
10%synergy
Nezumi Cutthroat
13%inclusion89 decks703 decks
12%synergy
Engine Rat
13%inclusion5 decks40 decks
11%synergy
Roaming Throne
11%inclusion76 decks703 decks
8%synergy
Refurbished Familiar
10%inclusion59 decks587 decks
8%synergy
Mukotai Ambusher
10%inclusion69 decks703 decks
9%synergy
Elephant-Rat
8.7%inclusion2 decks23 decks
8%synergy
Yawgmoth, Thran Physician
8.7%inclusion61 decks703 decks
-1%synergy
Okiba-Gang Shinobi
8.5%inclusion60 decks703 decks
8%synergy
Nezumi Graverobber
8.1%inclusion57 decks703 decks
7%synergy
Adaptive Automaton
8.0%inclusion56 decks703 decks
7%synergy
Undercity Dire Rat
7.7%inclusion2 decks26 decks
6%synergy
Nezumi Bladeblesser
7.5%inclusion53 decks703 decks
7%synergy
Nezumi Linkbreaker
7.4%inclusion52 decks703 decks
6%synergy
Instants
Whisper of the Dross
40%inclusion281 decks703 decks
37%synergy
Defile
39%inclusion274 decks703 decks
2%synergy
Village Rites
38%inclusion270 decks703 decks
13%synergy
Go for the Throat
31%inclusion217 decks703 decks
8%synergy
Rat Out
22%inclusion152 decks703 decks
20%synergy
Corrupted Conviction
19%inclusion133 decks703 decks
6%synergy
Withering Torment
18%inclusion61 decks342 decks
-14%synergy
Grim Affliction
17%inclusion120 decks703 decks
15%synergy
Deadly Rollick
17%inclusion119 decks703 decks
-7%synergy
Deadly Dispute
16%inclusion114 decks703 decks
-10%synergy
Infernal Grasp
16%inclusion114 decks703 decks
-9%synergy
Murder
15%inclusion108 decks703 decks
5%synergy
Foul-Tongue Shriek
14%inclusion96 decks703 decks
12%synergy
Tragic Slip
13%inclusion94 decks703 decks
-7%synergy
Tainted Strike
13%inclusion91 decks703 decks
10%synergy
Unbury
12%inclusion2 decks17 decks
11%synergy
Bitter Triumph
11%inclusion77 decks703 decks
1%synergy
Consuming Corruption
11%inclusion64 decks596 decks
-5%synergy
Gravepurge
10%inclusion70 decks703 decks
8%synergy
Hero's Downfall
8.8%inclusion62 decks703 decks
2%synergy
Doom Blade
8.8%inclusion62 decks703 decks
2%synergy
Anoint with Affliction
8.3%inclusion58 decks703 decks
8%synergy
Malakir Rebirth
8.0%inclusion56 decks703 decks
-15%synergy
Raise the Draugr
6.8%inclusion48 decks703 decks
6%synergy
Fell the Profane
6.8%inclusion41 decks605 decks
-12%synergy
Sudden Spoiling
6.5%inclusion46 decks703 decks
-2%synergy
Cabal Ritual
6.4%inclusion45 decks703 decks
-12%synergy
Death Denied
5.7%inclusion40 decks703 decks
5%synergy
Baleful Mastery
5.5%inclusion39 decks703 decks
-3%synergy
Culling the Weak
5.4%inclusion38 decks703 decks
-10%synergy
Zuko's Conviction
5.0%inclusion1 decks20 decks
4%synergy
Sorceries
Phyresis Outbreak
46%inclusion325 decks703 decks
44%synergy
Patriarch's Bidding
38%inclusion266 decks703 decks
34%synergy
Feed the Swarm
36%inclusion251 decks703 decks
-15%synergy
Revenge of the Rats
34%inclusion75 decks219 decks
31%synergy
Crippling Fear
31%inclusion218 decks703 decks
28%synergy
Kindred Dominance
30%inclusion213 decks703 decks
26%synergy
Swarmyard Massacre
28%inclusion133 decks470 decks
26%synergy
Sign in Blood
27%inclusion190 decks703 decks
-8%synergy
Echoing Return
21%inclusion149 decks703 decks
18%synergy
Vat Emergence
18%inclusion126 decks703 decks
16%synergy
Bloodline Bidding
18%inclusion3 decks17 decks
13%synergy
Plague of Vermin
17%inclusion116 decks703 decks
14%synergy
Night's Whisper
16%inclusion111 decks703 decks
-9%synergy
Diabolic Intent
16%inclusion109 decks703 decks
1%synergy
Damnation
16%inclusion109 decks703 decks
-5%synergy
Diabolic Tutor
14%inclusion99 decks703 decks
0%synergy
Toxic Deluge
13%inclusion93 decks703 decks
-24%synergy
Read the Bones
13%inclusion92 decks703 decks
-4%synergy
Spread the Sickness
13%inclusion90 decks703 decks
12%synergy
Gruesome Fate
11%inclusion76 decks703 decks
9%synergy
Mutilate
9.4%inclusion66 decks703 decks
-8%synergy
Reanimate
9.4%inclusion66 decks703 decks
-30%synergy
Pact of the Serpent
9.1%inclusion64 decks703 decks
7%synergy
Unearth
9.0%inclusion63 decks703 decks
0%synergy
Insatiable Avarice
8.5%inclusion60 decks703 decks
-3%synergy
Grim Tutor
8.4%inclusion59 decks703 decks
-3%synergy
Lab Rats
7.5%inclusion53 decks703 decks
7%synergy
Feed the Infection
7.1%inclusion50 decks703 decks
6%synergy
Blasphemous Edict
6.8%inclusion15 decks219 decks
-10%synergy
Caress of Phyrexia
6.8%inclusion48 decks703 decks
6%synergy
Victimize
6.7%inclusion47 decks703 decks
-20%synergy
Haunting Voyage
6.4%inclusion45 decks703 decks
5%synergy
In Garruk's Wake
6.1%inclusion43 decks703 decks
2%synergy
Forever Young
6.0%inclusion42 decks703 decks
4%synergy
Secret Salvage
5.7%inclusion40 decks703 decks
4%synergy
Utility Artifacts
Skullclamp
44%inclusion311 decks703 decks
22%synergy
Vanquisher's Banner
38%inclusion268 decks703 decks
34%synergy
Thrumming Stone
31%inclusion216 decks703 decks
27%synergy
Banner of Kinship
22%inclusion50 decks226 decks
20%synergy
Contagion Clasp
19%inclusion132 decks703 decks
16%synergy
Coat of Arms
19%inclusion132 decks703 decks
16%synergy
Swiftfoot Boots
18%inclusion126 decks703 decks
-13%synergy
Door of Destinies
17%inclusion116 decks703 decks
14%synergy
Lightning Greaves
15%inclusion108 decks703 decks
-18%synergy
Whip of Erebos
15%inclusion104 decks703 decks
4%synergy
Contagion Engine
12%inclusion83 decks703 decks
10%synergy
Chronicle of Victory
12%inclusion2 decks17 decks
9%synergy
Ashnod's Altar
9.2%inclusion65 decks703 decks
-11%synergy
Eldrazi Monument
8.4%inclusion59 decks703 decks
7%synergy
Icon of Ancestry
8.1%inclusion57 decks703 decks
7%synergy
The Darkness Crystal
7.7%inclusion2 decks26 decks
-12%synergy
Thornbite Staff
7.0%inclusion49 decks703 decks
4%synergy
Gathering Stone
5.9%inclusion1 decks17 decks
4%synergy
Sword of the Squeak
5.7%inclusion27 decks470 decks
5%synergy
Wayfarer's Bauble
5.1%inclusion36 decks703 decks
-10%synergy
Enchantments
Phyrexian Arena
38%inclusion265 decks703 decks
-2%synergy
Cover of Darkness
28%inclusion199 decks703 decks
25%synergy
Necrogen Communion
27%inclusion192 decks703 decks
26%synergy
Haunted One
26%inclusion184 decks703 decks
23%synergy
Bad Moon
26%inclusion181 decks703 decks
22%synergy
Grave Pact
19%inclusion136 decks703 decks
0%synergy
Oversold Cemetery
18%inclusion124 decks703 decks
12%synergy
Black Market
17%inclusion122 decks703 decks
-4%synergy
Black Market Connections
15%inclusion107 decks703 decks
-9%synergy
Phyresis
12%inclusion81 decks703 decks
9%synergy
Tribute to Horobi
10%inclusion71 decks703 decks
9%synergy
Vampiric Rites
10%inclusion69 decks703 decks
4%synergy
Dictate of Erebos
10%inclusion69 decks703 decks
-1%synergy
Phyrexian Reclamation
8.8%inclusion62 decks703 decks
-1%synergy
Lord Skitter's Blessing
8.1%inclusion57 decks703 decks
7%synergy
The Meathook Massacre
7.5%inclusion53 decks703 decks
-10%synergy
Dark Prophecy
7.0%inclusion49 decks703 decks
3%synergy
Intimidation
5.1%inclusion36 decks703 decks
5%synergy
Planeswalkers
Vraska, Betrayal's Sting
27%inclusion193 decks703 decks
25%synergy
Liliana of the Dark Realms
10%inclusion71 decks703 decks
-4%synergy
Utility Lands
Swarmyard
59%inclusion414 decks703 decks
53%synergy
Cabal Coffers
48%inclusion334 decks703 decks
-7%synergy
Bojuka Bog
44%inclusion311 decks703 decks
-3%synergy
Karn's Bastion
43%inclusion301 decks703 decks
39%synergy
Cabal Stronghold
35%inclusion245 decks703 decks
0%synergy
Mudflat Village
31%inclusion156 decks510 decks
28%synergy
Rogue's Passage
31%inclusion215 decks703 decks
12%synergy
Witch's Cottage
26%inclusion185 decks703 decks
2%synergy
Reliquary Tower
26%inclusion182 decks703 decks
-5%synergy
Urborg, Tomb of Yawgmoth
25%inclusion179 decks703 decks
-12%synergy
Nykthos, Shrine to Nyx
25%inclusion175 decks703 decks
-5%synergy
Three Tree City
23%inclusion113 decks492 decks
18%synergy
Mortuary Mire
20%inclusion143 decks703 decks
7%synergy
Phyrexian Tower
16%inclusion115 decks703 decks
-9%synergy
Crypt of Agadeem
12%inclusion87 decks703 decks
1%synergy
Castle Locthwain
12%inclusion85 decks703 decks
-5%synergy
War Room
11%inclusion80 decks703 decks
-5%synergy
Shizo, Death's Storehouse
11%inclusion75 decks703 decks
1%synergy
Access Tunnel
10%inclusion73 decks703 decks
7%synergy
Secret Tunnel
10%inclusion2 decks20 decks
9%synergy
Susur Secundi, Void Altar
8.7%inclusion2 decks23 decks
1%synergy
Temple of the False God
8.0%inclusion56 decks703 decks
0%synergy
Takenuma, Abandoned Mire
6.4%inclusion45 decks703 decks
-9%synergy
Barren Moor
6.0%inclusion42 decks703 decks
-4%synergy
Minas Morgul, Dark Fortress
6.0%inclusion42 decks703 decks
3%synergy
Mana Artifacts
Sol Ring
78%inclusion548 decks703 decks
-8%synergy
Arcane Signet
50%inclusion353 decks703 decks
-12%synergy
Glistening Sphere
34%inclusion242 decks703 decks
33%synergy
Patchwork Banner
29%inclusion138 decks477 decks
25%synergy
Charcoal Diamond
16%inclusion111 decks703 decks
-7%synergy
White Lotus Tile
15%inclusion3 decks20 decks
14%synergy
Mind Stone
13%inclusion94 decks703 decks
-16%synergy
Staff of Compleation
13%inclusion93 decks703 decks
12%synergy
Heraldic Banner
11%inclusion79 decks703 decks
6%synergy
Caged Sun
11%inclusion76 decks703 decks
-1%synergy
Thought Vessel
10%inclusion73 decks703 decks
-15%synergy
Gauntlet of Power
7.5%inclusion53 decks703 decks
4%synergy
Commander's Sphere
7.0%inclusion49 decks703 decks
-2%synergy
Throne of Eldraine
6.5%inclusion46 decks703 decks
-3%synergy
Phyrexian Atlas
6.1%inclusion43 decks703 decks
6%synergy
Firdoch Core
5.9%inclusion1 decks17 decks
6%synergy
Nyx Lotus
5.3%inclusion37 decks703 decks
-1%synergy
Lands
Swamp
96%inclusion676 decks703 decks
1%synergy
Path of Ancestry
29%inclusion202 decks703 decks
24%synergy
Cavern of Souls
20%inclusion138 decks703 decks
13%synergy
Myriad Landscape
18%inclusion125 decks703 decks
-8%synergy
Command Tower
14%inclusion97 decks703 decks
8%synergy
Malakir Rebirth
8.0%inclusion56 decks703 decks
-15%synergy
Fell the Profane
6.8%inclusion41 decks605 decks
-12%synergy
Evolving Wilds
6.5%inclusion46 decks703 decks
3%synergy
Escape Tunnel
6.0%inclusion42 decks703 decks
5%synergy
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