Karumonix, the Rat King (Commander) - Rat Colony

Karumonix, the Rat King
Rank #384
719decks
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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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Utility Lands
Mana Artifacts
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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%inclusion718 decks719 decks
94%synergy
Marrow-Gnawer
80%inclusion577 decks719 decks
77%synergy
Piper of the Swarm
84%inclusion602 decks719 decks
77%synergy
Pack Rat
78%inclusion564 decks719 decks
72%synergy
Blightbelly Rat
72%inclusion521 decks719 decks
69%synergy
Ogre Slumlord
77%inclusion552 decks719 decks
67%synergy
Ichor Rats
68%inclusion486 decks719 decks
65%synergy
Lord Skitter, Sewer King
71%inclusion509 decks719 decks
62%synergy
Infectious Inquiry
58%inclusion419 decks719 decks
56%synergy
Vraska's Fall
58%inclusion419 decks719 decks
55%synergy
Top Cards
Bontu's Monument
63%inclusion454 decks719 decks
35%synergy
Jet Medallion
62%inclusion449 decks719 decks
1%synergy
Dark Ritual
61%inclusion435 decks719 decks
-6%synergy
Herald's Horn
53%inclusion383 decks719 decks
48%synergy
Lord Skitter's Butcher
53%inclusion378 decks719 decks
49%synergy
Crypt Rats
52%inclusion377 decks719 decks
48%synergy
Typhoid Rats
52%inclusion374 decks719 decks
48%synergy
Drown in Ichor
52%inclusion371 decks719 decks
48%synergy
Ashcoat of the Shadow Swarm
51%inclusion366 decks719 decks
48%synergy
Tangled Colony
50%inclusion358 decks719 decks
47%synergy
Game Changers
Demonic Tutor
33%inclusion235 decks719 decks
5%synergy
Vampiric Tutor
24%inclusion176 decks719 decks
4%synergy
Bolas's Citadel
21%inclusion151 decks719 decks
-8%synergy
Necropotence
5.0%inclusion36 decks719 decks
-10%synergy
Creatures
Septic Rats
49%inclusion351 decks719 decks
47%synergy
Rancid Rats
48%inclusion347 decks719 decks
46%synergy
Ratcatcher
47%inclusion338 decks719 decks
44%synergy
Voracious Vermin
45%inclusion324 decks719 decks
42%synergy
Burglar Rat
43%inclusion310 decks719 decks
32%synergy
Gnat Miser
39%inclusion282 decks719 decks
36%synergy
Persistent Marshstalker
38%inclusion185 decks486 decks
35%synergy
Swarm of Rats
38%inclusion273 decks719 decks
35%synergy
Stronghold Rats
37%inclusion263 decks719 decks
33%synergy
Wave of Rats
35%inclusion254 decks719 decks
33%synergy
Ink-Eyes, Servant of Oni
31%inclusion224 decks719 decks
28%synergy
Chittering Skitterling
31%inclusion223 decks719 decks
30%synergy
Nashi, Moon Sage's Scion
28%inclusion199 decks719 decks
24%synergy
Ayara, First of Locthwain
27%inclusion194 decks719 decks
1%synergy
Species Specialist
26%inclusion190 decks719 decks
23%synergy
Old Flitterfang
26%inclusion190 decks719 decks
25%synergy
Nezumi Informant
26%inclusion189 decks719 decks
20%synergy
Pestilence Rats
26%inclusion186 decks719 decks
24%synergy
Chittering Witch
25%inclusion178 decks719 decks
20%synergy
Ruthless Radrat
24%inclusion174 decks719 decks
23%synergy
Changeling Outcast
24%inclusion172 decks719 decks
19%synergy
Valley Rotcaller
21%inclusion104 decks496 decks
18%synergy
Innocuous Rat
20%inclusion69 decks342 decks
19%synergy
Nezumi Prowler
20%inclusion145 decks719 decks
19%synergy
Ruin Rat
20%inclusion145 decks719 decks
19%synergy
Ravenous Rats
20%inclusion141 decks719 decks
18%synergy
Crypt Ghast
19%inclusion136 decks719 decks
-29%synergy
Gray Merchant of Asphodel
19%inclusion135 decks719 decks
-32%synergy
Gnawing Vermin
19%inclusion134 decks719 decks
17%synergy
Locust Miser
19%inclusion134 decks719 decks
17%synergy
Twisted Sewer-Witch
18%inclusion132 decks719 decks
17%synergy
Throat Slitter
18%inclusion126 decks719 decks
16%synergy
Daggerfang Duo
14%inclusion68 decks474 decks
14%synergy
Drainpipe Vermin
14%inclusion100 decks719 decks
13%synergy
Relentless Rats
14%inclusion98 decks719 decks
12%synergy
Rotting Rats
13%inclusion94 decks719 decks
10%synergy
Razortooth Rats
13%inclusion93 decks719 decks
12%synergy
Nezumi Cutthroat
13%inclusion92 decks719 decks
12%synergy
Engine Rat
13%inclusion5 decks40 decks
11%synergy
Roaming Throne
11%inclusion77 decks719 decks
8%synergy
Mukotai Ambusher
10%inclusion72 decks719 decks
9%synergy
Refurbished Familiar
10%inclusion59 decks591 decks
8%synergy
Yawgmoth, Thran Physician
9.0%inclusion65 decks719 decks
-1%synergy
Elephant-Rat
8.7%inclusion2 decks23 decks
8%synergy
Okiba-Gang Shinobi
8.6%inclusion62 decks719 decks
8%synergy
Nezumi Graverobber
8.2%inclusion59 decks719 decks
7%synergy
Adaptive Automaton
7.8%inclusion56 decks719 decks
7%synergy
Undercity Dire Rat
7.7%inclusion2 decks26 decks
6%synergy
Nezumi Bladeblesser
7.5%inclusion54 decks719 decks
7%synergy
Sinuous Vermin
7.4%inclusion53 decks719 decks
7%synergy
Instants
Whisper of the Dross
40%inclusion288 decks719 decks
37%synergy
Defile
39%inclusion284 decks719 decks
3%synergy
Village Rites
39%inclusion279 decks719 decks
13%synergy
Go for the Throat
31%inclusion220 decks719 decks
8%synergy
Rat Out
21%inclusion154 decks719 decks
20%synergy
Corrupted Conviction
19%inclusion135 decks719 decks
6%synergy
Withering Torment
18%inclusion61 decks346 decks
-14%synergy
Grim Affliction
17%inclusion125 decks719 decks
15%synergy
Deadly Rollick
17%inclusion122 decks719 decks
-7%synergy
Infernal Grasp
17%inclusion120 decks719 decks
-9%synergy
Deadly Dispute
17%inclusion119 decks719 decks
-9%synergy
Murder
15%inclusion108 decks719 decks
5%synergy
Foul-Tongue Shriek
14%inclusion99 decks719 decks
12%synergy
Tainted Strike
14%inclusion98 decks719 decks
11%synergy
Tragic Slip
13%inclusion97 decks719 decks
-6%synergy
Unbury
12%inclusion2 decks17 decks
11%synergy
Bitter Triumph
11%inclusion79 decks719 decks
1%synergy
Consuming Corruption
11%inclusion65 decks600 decks
-5%synergy
Gravepurge
10%inclusion72 decks719 decks
8%synergy
Hero's Downfall
8.9%inclusion64 decks719 decks
2%synergy
Anoint with Affliction
8.6%inclusion62 decks719 decks
8%synergy
Doom Blade
8.6%inclusion62 decks719 decks
1%synergy
Malakir Rebirth
8.2%inclusion59 decks719 decks
-15%synergy
Raise the Draugr
7.0%inclusion50 decks719 decks
6%synergy
Fell the Profane
6.7%inclusion41 decks609 decks
-12%synergy
Sudden Spoiling
6.7%inclusion48 decks719 decks
-2%synergy
Cabal Ritual
6.4%inclusion46 decks719 decks
-12%synergy
Death Denied
5.6%inclusion40 decks719 decks
5%synergy
Baleful Mastery
5.6%inclusion40 decks719 decks
-3%synergy
Culling the Weak
5.6%inclusion40 decks719 decks
-10%synergy
Zuko's Conviction
5.0%inclusion1 decks20 decks
4%synergy
Sorceries
Phyresis Outbreak
46%inclusion333 decks719 decks
45%synergy
Patriarch's Bidding
38%inclusion275 decks719 decks
34%synergy
Feed the Swarm
37%inclusion263 decks719 decks
-14%synergy
Revenge of the Rats
34%inclusion75 decks221 decks
31%synergy
Crippling Fear
31%inclusion226 decks719 decks
28%synergy
Kindred Dominance
30%inclusion216 decks719 decks
25%synergy
Swarmyard Massacre
28%inclusion134 decks474 decks
26%synergy
Sign in Blood
28%inclusion198 decks719 decks
-8%synergy
Echoing Return
21%inclusion154 decks719 decks
18%synergy
Vat Emergence
18%inclusion131 decks719 decks
17%synergy
Bloodline Bidding
18%inclusion3 decks17 decks
13%synergy
Plague of Vermin
16%inclusion117 decks719 decks
14%synergy
Night's Whisper
16%inclusion116 decks719 decks
-9%synergy
Diabolic Intent
16%inclusion114 decks719 decks
1%synergy
Damnation
16%inclusion112 decks719 decks
-5%synergy
Diabolic Tutor
14%inclusion103 decks719 decks
0%synergy
Read the Bones
14%inclusion99 decks719 decks
-3%synergy
Toxic Deluge
13%inclusion95 decks719 decks
-24%synergy
Spread the Sickness
13%inclusion92 decks719 decks
12%synergy
Gruesome Fate
11%inclusion79 decks719 decks
9%synergy
Reanimate
10%inclusion69 decks719 decks
-30%synergy
Mutilate
9.5%inclusion68 decks719 decks
-8%synergy
Pact of the Serpent
9.0%inclusion65 decks719 decks
7%synergy
Unearth
8.9%inclusion64 decks719 decks
0%synergy
Grim Tutor
8.6%inclusion62 decks719 decks
-3%synergy
Insatiable Avarice
8.3%inclusion60 decks719 decks
-3%synergy
Feed the Infection
7.5%inclusion54 decks719 decks
7%synergy
Lab Rats
7.4%inclusion53 decks719 decks
7%synergy
Caress of Phyrexia
6.8%inclusion49 decks719 decks
6%synergy
Blasphemous Edict
6.8%inclusion15 decks221 decks
-10%synergy
Victimize
6.7%inclusion48 decks719 decks
-20%synergy
Haunting Voyage
6.3%inclusion45 decks719 decks
5%synergy
Forever Young
6.0%inclusion43 decks719 decks
4%synergy
In Garruk's Wake
6.0%inclusion43 decks719 decks
2%synergy
Secret Salvage
5.7%inclusion41 decks719 decks
4%synergy
Living Death
5.1%inclusion37 decks719 decks
-5%synergy
Utility Artifacts
Skullclamp
45%inclusion321 decks719 decks
23%synergy
Vanquisher's Banner
38%inclusion275 decks719 decks
34%synergy
Thrumming Stone
31%inclusion224 decks719 decks
27%synergy
Banner of Kinship
22%inclusion50 decks228 decks
20%synergy
Contagion Clasp
19%inclusion136 decks719 decks
17%synergy
Coat of Arms
19%inclusion135 decks719 decks
16%synergy
Swiftfoot Boots
18%inclusion128 decks719 decks
-14%synergy
Door of Destinies
17%inclusion121 decks719 decks
15%synergy
Lightning Greaves
15%inclusion110 decks719 decks
-18%synergy
Whip of Erebos
15%inclusion107 decks719 decks
4%synergy
Chronicle of Victory
12%inclusion2 decks17 decks
9%synergy
Contagion Engine
12%inclusion84 decks719 decks
10%synergy
Ashnod's Altar
9.2%inclusion66 decks719 decks
-11%synergy
Eldrazi Monument
8.5%inclusion61 decks719 decks
7%synergy
Icon of Ancestry
8.1%inclusion58 decks719 decks
7%synergy
The Darkness Crystal
7.7%inclusion2 decks26 decks
-12%synergy
Thornbite Staff
7.0%inclusion50 decks719 decks
4%synergy
Sword of the Squeak
6.1%inclusion29 decks474 decks
6%synergy
Gathering Stone
5.9%inclusion1 decks17 decks
4%synergy
Wayfarer's Bauble
5.1%inclusion37 decks719 decks
-10%synergy
Enchantments
Phyrexian Arena
38%inclusion275 decks719 decks
-2%synergy
Cover of Darkness
28%inclusion204 decks719 decks
25%synergy
Necrogen Communion
28%inclusion198 decks719 decks
26%synergy
Haunted One
26%inclusion189 decks719 decks
24%synergy
Bad Moon
25%inclusion182 decks719 decks
22%synergy
Grave Pact
19%inclusion140 decks719 decks
0%synergy
Oversold Cemetery
18%inclusion127 decks719 decks
12%synergy
Black Market
18%inclusion126 decks719 decks
-4%synergy
Black Market Connections
16%inclusion112 decks719 decks
-8%synergy
Phyresis
12%inclusion84 decks719 decks
10%synergy
Dictate of Erebos
10%inclusion74 decks719 decks
-1%synergy
Tribute to Horobi
10%inclusion72 decks719 decks
9%synergy
Vampiric Rites
10%inclusion70 decks719 decks
4%synergy
Phyrexian Reclamation
9.0%inclusion65 decks719 decks
-1%synergy
Lord Skitter's Blessing
7.9%inclusion57 decks719 decks
7%synergy
The Meathook Massacre
7.8%inclusion56 decks719 decks
-10%synergy
Dark Prophecy
7.1%inclusion51 decks719 decks
3%synergy
Intimidation
5.1%inclusion37 decks719 decks
5%synergy
Planeswalkers
Vraska, Betrayal's Sting
28%inclusion202 decks719 decks
25%synergy
Liliana of the Dark Realms
10%inclusion73 decks719 decks
-4%synergy
Utility Lands
Swarmyard
59%inclusion426 decks719 decks
54%synergy
Cabal Coffers
48%inclusion344 decks719 decks
-7%synergy
Bojuka Bog
45%inclusion321 decks719 decks
-2%synergy
Karn's Bastion
43%inclusion309 decks719 decks
39%synergy
Cabal Stronghold
35%inclusion253 decks719 decks
0%synergy
Rogue's Passage
31%inclusion222 decks719 decks
12%synergy
Mudflat Village
31%inclusion157 decks514 decks
28%synergy
Witch's Cottage
26%inclusion189 decks719 decks
2%synergy
Urborg, Tomb of Yawgmoth
26%inclusion188 decks719 decks
-11%synergy
Reliquary Tower
26%inclusion187 decks719 decks
-4%synergy
Nykthos, Shrine to Nyx
26%inclusion184 decks719 decks
-4%synergy
Three Tree City
23%inclusion114 decks496 decks
18%synergy
Mortuary Mire
20%inclusion144 decks719 decks
7%synergy
Phyrexian Tower
17%inclusion119 decks719 decks
-9%synergy
Castle Locthwain
12%inclusion89 decks719 decks
-5%synergy
Crypt of Agadeem
12%inclusion88 decks719 decks
1%synergy
War Room
12%inclusion85 decks719 decks
-4%synergy
Shizo, Death's Storehouse
11%inclusion77 decks719 decks
1%synergy
Access Tunnel
11%inclusion77 decks719 decks
8%synergy
Susur Secundi, Void Altar
8.7%inclusion2 decks23 decks
1%synergy
Temple of the False God
7.9%inclusion57 decks719 decks
0%synergy
Takenuma, Abandoned Mire
6.7%inclusion48 decks719 decks
-9%synergy
Minas Morgul, Dark Fortress
6.1%inclusion44 decks719 decks
3%synergy
Barren Moor
5.8%inclusion42 decks719 decks
-4%synergy
Secret Tunnel
5.0%inclusion1 decks20 decks
4%synergy
Mana Artifacts
Sol Ring
78%inclusion563 decks719 decks
-8%synergy
Arcane Signet
50%inclusion363 decks719 decks
-11%synergy
Glistening Sphere
35%inclusion250 decks719 decks
34%synergy
Patchwork Banner
29%inclusion138 decks481 decks
24%synergy
Charcoal Diamond
16%inclusion112 decks719 decks
-7%synergy
White Lotus Tile
15%inclusion3 decks20 decks
14%synergy
Mind Stone
13%inclusion97 decks719 decks
-16%synergy
Staff of Compleation
13%inclusion96 decks719 decks
12%synergy
Heraldic Banner
11%inclusion82 decks719 decks
6%synergy
Caged Sun
11%inclusion76 decks719 decks
-1%synergy
Thought Vessel
10%inclusion74 decks719 decks
-15%synergy
Gauntlet of Power
7.5%inclusion54 decks719 decks
4%synergy
Commander's Sphere
6.8%inclusion49 decks719 decks
-2%synergy
Throne of Eldraine
6.5%inclusion47 decks719 decks
-3%synergy
Phyrexian Atlas
6.3%inclusion45 decks719 decks
6%synergy
Firdoch Core
5.9%inclusion1 decks17 decks
6%synergy
Nyx Lotus
5.3%inclusion38 decks719 decks
-1%synergy
Lands
Swamp
96%inclusion691 decks719 decks
1%synergy
Path of Ancestry
29%inclusion207 decks719 decks
24%synergy
Cavern of Souls
20%inclusion142 decks719 decks
13%synergy
Myriad Landscape
18%inclusion128 decks719 decks
-8%synergy
Command Tower
13%inclusion97 decks719 decks
8%synergy
Malakir Rebirth
8.2%inclusion59 decks719 decks
-15%synergy
Fell the Profane
6.7%inclusion41 decks609 decks
-12%synergy
Evolving Wilds
6.5%inclusion47 decks719 decks
3%synergy
Escape Tunnel
6.1%inclusion44 decks719 decks
5%synergy
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