Karumonix, the Rat King (Commander) - Rat Colony

Karumonix, the Rat King
Rank #394
536decks
As CommanderAs CardAverage DeckDecks
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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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Rat Colony
100%inclusion535 decks536 decks
94%synergy
Marrow-Gnawer
81%inclusion432 decks536 decks
77%synergy
Piper of the Swarm
83%inclusion446 decks536 decks
76%synergy
Pack Rat
78%inclusion418 decks536 decks
72%synergy
Blightbelly Rat
73%inclusion392 decks536 decks
70%synergy
Ogre Slumlord
75%inclusion404 decks536 decks
65%synergy
Ichor Rats
67%inclusion357 decks536 decks
64%synergy
Lord Skitter, Sewer King
69%inclusion370 decks536 decks
61%synergy
Infectious Inquiry
58%inclusion310 decks536 decks
55%synergy
Vraska's Fall
57%inclusion305 decks536 decks
54%synergy
Top Cards
Jet Medallion
66%inclusion352 decks536 decks
3%synergy
Bontu's Monument
64%inclusion342 decks536 decks
35%synergy
Dark Ritual
64%inclusion341 decks536 decks
-3%synergy
Lord Skitter's Butcher
53%inclusion286 decks536 decks
50%synergy
Herald's Horn
53%inclusion285 decks536 decks
47%synergy
Crypt Rats
53%inclusion284 decks536 decks
48%synergy
Typhoid Rats
53%inclusion282 decks536 decks
49%synergy
Drown in Ichor
50%inclusion270 decks536 decks
47%synergy
Tangled Colony
50%inclusion269 decks536 decks
47%synergy
Ashcoat of the Shadow Swarm
49%inclusion264 decks536 decks
46%synergy
Game Changers
Demonic Tutor
32%inclusion174 decks536 decks
5%synergy
Vampiric Tutor
25%inclusion132 decks536 decks
4%synergy
Bolas's Citadel
21%inclusion110 decks536 decks
-8%synergy
Necropotence
5.2%inclusion28 decks536 decks
-9%synergy
Creatures
Septic Rats
47%inclusion252 decks536 decks
45%synergy
Ratcatcher
47%inclusion250 decks536 decks
43%synergy
Rancid Rats
47%inclusion250 decks536 decks
44%synergy
Voracious Vermin
44%inclusion237 decks536 decks
41%synergy
Burglar Rat
43%inclusion229 decks536 decks
32%synergy
Persistent Marshstalker
38%inclusion183 decks478 decks
35%synergy
Gnat Miser
38%inclusion205 decks536 decks
35%synergy
Swarm of Rats
37%inclusion199 decks536 decks
35%synergy
Wave of Rats
35%inclusion187 decks536 decks
33%synergy
Stronghold Rats
35%inclusion187 decks536 decks
31%synergy
Rat King, Verminister
33%inclusion5 decks15 decks
30%synergy
Ink-Eyes, Servant of Oni
31%inclusion168 decks536 decks
28%synergy
Chittering Skitterling
30%inclusion162 decks536 decks
29%synergy
Pestilence Rats
27%inclusion146 decks536 decks
25%synergy
Ayara, First of Locthwain
27%inclusion145 decks536 decks
2%synergy
Nashi, Moon Sage's Scion
27%inclusion144 decks536 decks
23%synergy
Species Specialist
27%inclusion143 decks536 decks
23%synergy
Nezumi Informant
26%inclusion142 decks536 decks
20%synergy
Rat King, Pale Piper
25%inclusion3 decks12 decks
21%synergy
Chittering Witch
24%inclusion129 decks536 decks
20%synergy
Old Flitterfang
24%inclusion127 decks536 decks
23%synergy
Changeling Outcast
23%inclusion125 decks536 decks
18%synergy
Ruthless Radrat
23%inclusion124 decks536 decks
22%synergy
Valley Rotcaller
21%inclusion102 decks488 decks
18%synergy
Innocuous Rat
20%inclusion67 decks335 decks
19%synergy
Crypt Ghast
19%inclusion102 decks536 decks
-28%synergy
Nezumi Prowler
19%inclusion102 decks536 decks
18%synergy
Gray Merchant of Asphodel
19%inclusion100 decks536 decks
-32%synergy
Gnawing Vermin
18%inclusion97 decks536 decks
17%synergy
Ruin Rat
18%inclusion97 decks536 decks
17%synergy
Ravenous Rats
18%inclusion95 decks536 decks
16%synergy
Locust Miser
18%inclusion94 decks536 decks
16%synergy
Throat Slitter
17%inclusion90 decks536 decks
15%synergy
Twisted Sewer-Witch
17%inclusion89 decks536 decks
15%synergy
Engine Rat
15%inclusion6 decks39 decks
14%synergy
Daggerfang Duo
15%inclusion68 decks466 decks
14%synergy
Drainpipe Vermin
14%inclusion74 decks536 decks
12%synergy
Nezumi Cutthroat
14%inclusion73 decks536 decks
13%synergy
Relentless Rats
13%inclusion71 decks536 decks
11%synergy
Razortooth Rats
13%inclusion71 decks536 decks
13%synergy
Rotting Rats
12%inclusion66 decks536 decks
9%synergy
Undercity Dire Rat
12%inclusion3 decks25 decks
10%synergy
Roaming Throne
11%inclusion60 decks536 decks
8%synergy
Refurbished Familiar
11%inclusion59 decks536 decks
9%synergy
Mukotai Ambusher
10%inclusion51 decks536 decks
9%synergy
Elephant-Rat
8.7%inclusion2 decks23 decks
8%synergy
Yawgmoth, Thran Physician
8.6%inclusion46 decks536 decks
-1%synergy
Splinter, Hamato Yoshi
8.3%inclusion1 decks12 decks
8%synergy
Okiba-Gang Shinobi
8.2%inclusion44 decks536 decks
7%synergy
Nezumi Bladeblesser
7.8%inclusion42 decks536 decks
7%synergy
Instants
Whisper of the Dross
41%inclusion221 decks536 decks
39%synergy
Village Rites
39%inclusion207 decks536 decks
13%synergy
Defile
39%inclusion207 decks536 decks
3%synergy
Go for the Throat
31%inclusion166 decks536 decks
8%synergy
Rat Out
21%inclusion114 decks536 decks
20%synergy
Corrupted Conviction
20%inclusion108 decks536 decks
8%synergy
Withering Torment
18%inclusion61 decks339 decks
-13%synergy
Grim Affliction
18%inclusion94 decks536 decks
16%synergy
Deadly Rollick
17%inclusion93 decks536 decks
-7%synergy
Infernal Grasp
16%inclusion88 decks536 decks
-9%synergy
Deadly Dispute
16%inclusion87 decks536 decks
-10%synergy
Murder
16%inclusion84 decks536 decks
6%synergy
Tragic Slip
13%inclusion69 decks536 decks
-7%synergy
Tainted Strike
13%inclusion67 decks536 decks
10%synergy
Foul-Tongue Shriek
12%inclusion66 decks536 decks
11%synergy
Unbury
12%inclusion2 decks17 decks
11%synergy
Consuming Corruption
12%inclusion63 decks536 decks
-4%synergy
Bitter Triumph
11%inclusion59 decks536 decks
1%synergy
Gravepurge
10%inclusion52 decks536 decks
8%synergy
Hero's Downfall
8.6%inclusion46 decks536 decks
2%synergy
Doom Blade
8.2%inclusion44 decks536 decks
1%synergy
Anoint with Affliction
8.0%inclusion43 decks536 decks
7%synergy
Malakir Rebirth
8.0%inclusion43 decks536 decks
-15%synergy
Fell the Profane
7.3%inclusion39 decks536 decks
-12%synergy
Cabal Ritual
7.1%inclusion38 decks536 decks
-11%synergy
Raise the Draugr
6.9%inclusion37 decks536 decks
6%synergy
Sudden Spoiling
6.3%inclusion34 decks536 decks
-2%synergy
Culling the Weak
5.8%inclusion31 decks536 decks
-11%synergy
Death Denied
5.4%inclusion29 decks536 decks
5%synergy
Baleful Mastery
5.4%inclusion29 decks536 decks
-3%synergy
Zuko's Conviction
5.0%inclusion1 decks20 decks
4%synergy
Sorceries
Phyresis Outbreak
47%inclusion250 decks536 decks
45%synergy
Patriarch's Bidding
37%inclusion196 decks536 decks
32%synergy
Feed the Swarm
37%inclusion196 decks536 decks
-14%synergy
Revenge of the Rats
35%inclusion76 decks217 decks
32%synergy
Kindred Dominance
31%inclusion165 decks536 decks
26%synergy
Crippling Fear
31%inclusion165 decks536 decks
28%synergy
Swarmyard Massacre
28%inclusion132 decks466 decks
26%synergy
Sign in Blood
28%inclusion150 decks536 decks
-7%synergy
Echoing Return
23%inclusion121 decks536 decks
19%synergy
Night's Whisper
16%inclusion88 decks536 decks
-8%synergy
Vat Emergence
16%inclusion86 decks536 decks
15%synergy
Plague of Vermin
16%inclusion86 decks536 decks
14%synergy
Damnation
15%inclusion81 decks536 decks
-5%synergy
Diabolic Intent
15%inclusion80 decks536 decks
-0%synergy
Diabolic Tutor
15%inclusion79 decks536 decks
1%synergy
Toxic Deluge
14%inclusion77 decks536 decks
-22%synergy
Read the Bones
13%inclusion71 decks536 decks
-3%synergy
Spread the Sickness
13%inclusion70 decks536 decks
12%synergy
Reanimate
10%inclusion55 decks536 decks
-30%synergy
Gruesome Fate
10%inclusion54 decks536 decks
8%synergy
Unearth
10%inclusion52 decks536 decks
1%synergy
Pact of the Serpent
9.3%inclusion50 decks536 decks
8%synergy
Mutilate
9.0%inclusion48 decks536 decks
-7%synergy
Insatiable Avarice
8.8%inclusion47 decks536 decks
-3%synergy
Grim Tutor
8.6%inclusion46 decks536 decks
-3%synergy
Victimize
7.1%inclusion38 decks536 decks
-20%synergy
Caress of Phyrexia
7.1%inclusion38 decks536 decks
6%synergy
Blasphemous Edict
6.9%inclusion15 decks217 decks
-9%synergy
Lab Rats
6.7%inclusion36 decks536 decks
6%synergy
Feed the Infection
6.5%inclusion35 decks536 decks
6%synergy
Haunting Voyage
6.3%inclusion34 decks536 decks
5%synergy
Bloodline Bidding
5.9%inclusion1 decks17 decks
2%synergy
In Garruk's Wake
5.8%inclusion31 decks536 decks
2%synergy
Secret Salvage
5.8%inclusion31 decks536 decks
4%synergy
Forever Young
5.6%inclusion30 decks536 decks
4%synergy
Bubbling Muck
5.2%inclusion28 decks536 decks
-10%synergy
Utility Artifacts
Skullclamp
46%inclusion249 decks536 decks
24%synergy
Vanquisher's Banner
38%inclusion203 decks536 decks
34%synergy
Thrumming Stone
30%inclusion162 decks536 decks
26%synergy
Banner of Kinship
22%inclusion50 decks223 decks
20%synergy
Swiftfoot Boots
18%inclusion99 decks536 decks
-13%synergy
Contagion Clasp
18%inclusion96 decks536 decks
16%synergy
Lightning Greaves
17%inclusion93 decks536 decks
-16%synergy
Coat of Arms
16%inclusion88 decks536 decks
14%synergy
Door of Destinies
15%inclusion83 decks536 decks
13%synergy
Whip of Erebos
14%inclusion76 decks536 decks
3%synergy
Contagion Engine
12%inclusion64 decks536 decks
10%synergy
Chronicle of Victory
12%inclusion2 decks17 decks
9%synergy
Gathering Stone
12%inclusion2 decks17 decks
10%synergy
Ashnod's Altar
8.0%inclusion43 decks536 decks
-12%synergy
The Darkness Crystal
8.0%inclusion2 decks25 decks
-12%synergy
Icon of Ancestry
7.5%inclusion40 decks536 decks
7%synergy
Thornbite Staff
7.3%inclusion39 decks536 decks
4%synergy
Eldrazi Monument
7.1%inclusion38 decks536 decks
5%synergy
Sword of the Squeak
5.8%inclusion27 decks466 decks
5%synergy
Wayfarer's Bauble
5.4%inclusion29 decks536 decks
-10%synergy
Enchantments
Phyrexian Arena
39%inclusion209 decks536 decks
-0%synergy
Cover of Darkness
30%inclusion160 decks536 decks
27%synergy
Necrogen Communion
27%inclusion143 decks536 decks
25%synergy
Haunted One
25%inclusion136 decks536 decks
23%synergy
Bad Moon
23%inclusion123 decks536 decks
20%synergy
Grave Pact
18%inclusion99 decks536 decks
-1%synergy
Oversold Cemetery
17%inclusion91 decks536 decks
12%synergy
Black Market Connections
15%inclusion83 decks536 decks
-9%synergy
Black Market
15%inclusion82 decks536 decks
-6%synergy
Phyresis
11%inclusion60 decks536 decks
9%synergy
Phyrexian Reclamation
10%inclusion52 decks536 decks
-0%synergy
Vampiric Rites
10%inclusion51 decks536 decks
3%synergy
Dictate of Erebos
8.6%inclusion46 decks536 decks
-2%synergy
Tribute to Horobi
8.2%inclusion44 decks536 decks
7%synergy
Lord Skitter's Blessing
7.5%inclusion40 decks536 decks
7%synergy
The Meathook Massacre
6.9%inclusion37 decks536 decks
-10%synergy
Dark Prophecy
6.7%inclusion36 decks536 decks
3%synergy
Intimidation
5.0%inclusion27 decks536 decks
4%synergy
Planeswalkers
Vraska, Betrayal's Sting
26%inclusion141 decks536 decks
24%synergy
Liliana of the Dark Realms
11%inclusion58 decks536 decks
-3%synergy
Utility Lands
Swarmyard
59%inclusion317 decks536 decks
53%synergy
Cabal Coffers
47%inclusion251 decks536 decks
-8%synergy
Bojuka Bog
45%inclusion240 decks536 decks
-2%synergy
Karn's Bastion
42%inclusion223 decks536 decks
38%synergy
Cabal Stronghold
35%inclusion187 decks536 decks
0%synergy
Mudflat Village
31%inclusion156 decks506 decks
28%synergy
Rogue's Passage
30%inclusion161 decks536 decks
11%synergy
Reliquary Tower
26%inclusion142 decks536 decks
-4%synergy
Witch's Cottage
26%inclusion140 decks536 decks
2%synergy
Nykthos, Shrine to Nyx
25%inclusion132 decks536 decks
-5%synergy
Urborg, Tomb of Yawgmoth
25%inclusion132 decks536 decks
-13%synergy
Three Tree City
23%inclusion110 decks488 decks
18%synergy
Mortuary Mire
18%inclusion99 decks536 decks
5%synergy
Phyrexian Tower
16%inclusion87 decks536 decks
-10%synergy
Castle Locthwain
12%inclusion63 decks536 decks
-5%synergy
Crypt of Agadeem
11%inclusion60 decks536 decks
-0%synergy
War Room
11%inclusion60 decks536 decks
-5%synergy
Shizo, Death's Storehouse
10%inclusion53 decks536 decks
-0%synergy
Access Tunnel
10%inclusion52 decks536 decks
7%synergy
Temple of the False God
8.2%inclusion44 decks536 decks
0%synergy
Barren Moor
6.2%inclusion33 decks536 decks
-3%synergy
Minas Morgul, Dark Fortress
5.8%inclusion31 decks536 decks
3%synergy
Takenuma, Abandoned Mire
5.4%inclusion29 decks536 decks
-10%synergy
Secret Tunnel
5.0%inclusion1 decks20 decks
4%synergy
Mana Artifacts
Sol Ring
78%inclusion418 decks536 decks
-8%synergy
Arcane Signet
49%inclusion265 decks536 decks
-12%synergy
Glistening Sphere
34%inclusion182 decks536 decks
33%synergy
Patchwork Banner
29%inclusion136 decks473 decks
24%synergy
Charcoal Diamond
16%inclusion86 decks536 decks
-6%synergy
Mind Stone
14%inclusion75 decks536 decks
-14%synergy
Staff of Compleation
13%inclusion67 decks536 decks
11%synergy
Thought Vessel
11%inclusion59 decks536 decks
-14%synergy
Heraldic Banner
10%inclusion55 decks536 decks
5%synergy
Caged Sun
10%inclusion54 decks536 decks
-1%synergy
White Lotus Tile
10%inclusion2 decks20 decks
9%synergy
Commander's Sphere
6.2%inclusion33 decks536 decks
-2%synergy
Gauntlet of Power
6.2%inclusion33 decks536 decks
3%synergy
Nyx Lotus
6.0%inclusion32 decks536 decks
-0%synergy
Firdoch Core
5.9%inclusion1 decks17 decks
6%synergy
Throne of Eldraine
5.8%inclusion31 decks536 decks
-4%synergy
Phyrexian Atlas
5.2%inclusion28 decks536 decks
5%synergy
Lands
Swamp
96%inclusion516 decks536 decks
1%synergy
Path of Ancestry
27%inclusion144 decks536 decks
22%synergy
Cavern of Souls
20%inclusion108 decks536 decks
13%synergy
Myriad Landscape
18%inclusion95 decks536 decks
-7%synergy
Command Tower
12%inclusion62 decks536 decks
6%synergy
Big Apple, 3 a.m.
8.3%inclusion1 decks12 decks
6%synergy
Malakir Rebirth
8.0%inclusion43 decks536 decks
-15%synergy
Fell the Profane
7.3%inclusion39 decks536 decks
-12%synergy
Evolving Wilds
5.6%inclusion30 decks536 decks
2%synergy
Escape Tunnel
5.0%inclusion27 decks536 decks
4%synergy
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