Karumonix, the Rat King (Commander) - Core

Karumonix, the Rat King
Rank #385
936decks
Background image for Building Rat Typal With Marrow-Gnawer
Jeremy Rowe
Mar 20, 2026
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.
Deck Filters
Cardsphere
Archidekt
Commander Spellbook
Moxfield
Scryfall
MTGStocks
Rat King, Pale Piper
22%inclusion24 decks107 decks
18%synergy
Rat King, Verminister
22%inclusion30 decks139 decks
19%synergy
Big Apple, 3 a.m.
8.4%inclusion9 decks107 decks
6%synergy
Shredder's Technique
3.7%inclusion4 decks107 decks
0%synergy
Tunnel Rats
2.9%inclusion3 decks103 decks
2%synergy
High Synergy Cards
Blightbelly Rat
85%inclusion800 decks936 decks
82%synergy
Piper of the Swarm
83%inclusion780 decks936 decks
76%synergy
Pack Rat
76%inclusion708 decks936 decks
70%synergy
Ichor Rats
71%inclusion668 decks936 decks
68%synergy
Ogre Slumlord
78%inclusion726 decks936 decks
68%synergy
Typhoid Rats
69%inclusion646 decks936 decks
65%synergy
Marrow-Gnawer
68%inclusion632 decks936 decks
64%synergy
Infectious Inquiry
66%inclusion619 decks936 decks
63%synergy
Rancid Rats
64%inclusion601 decks936 decks
62%synergy
Lord Skitter, Sewer King
70%inclusion653 decks936 decks
61%synergy
Top Cards
Lord Skitter's Butcher
64%inclusion595 decks936 decks
60%synergy
Vraska's Fall
63%inclusion594 decks936 decks
60%synergy
Septic Rats
62%inclusion581 decks936 decks
60%synergy
Crypt Rats
61%inclusion567 decks936 decks
56%synergy
Drown in Ichor
60%inclusion561 decks936 decks
56%synergy
Tangled Colony
59%inclusion555 decks936 decks
56%synergy
Burglar Rat
58%inclusion540 decks936 decks
47%synergy
Voracious Vermin
57%inclusion531 decks936 decks
54%synergy
Rat Colony
52%inclusion484 decks936 decks
46%synergy
Whisper of the Dross
51%inclusion478 decks936 decks
48%synergy
Creatures
Stronghold Rats
49%inclusion459 decks936 decks
45%synergy
Chittering Skitterling
47%inclusion437 decks936 decks
46%synergy
Gnat Miser
46%inclusion429 decks936 decks
43%synergy
Persistent Marshstalker
45%inclusion369 decks811 decks
43%synergy
Wave of Rats
44%inclusion411 decks936 decks
42%synergy
Pestilence Rats
40%inclusion375 decks936 decks
38%synergy
Ratcatcher
40%inclusion371 decks936 decks
36%synergy
Nezumi Prowler
37%inclusion346 decks936 decks
36%synergy
Swarm of Rats
36%inclusion340 decks936 decks
34%synergy
Ruin Rat
36%inclusion340 decks936 decks
35%synergy
Nezumi Informant
35%inclusion332 decks936 decks
29%synergy
Gnawing Vermin
35%inclusion323 decks936 decks
33%synergy
Ravenous Rats
34%inclusion320 decks936 decks
32%synergy
Chittering Witch
34%inclusion319 decks936 decks
30%synergy
Changeling Outcast
34%inclusion317 decks936 decks
29%synergy
Nezumi Cutthroat
33%inclusion310 decks936 decks
32%synergy
Nashi, Moon Sage's Scion
32%inclusion296 decks936 decks
28%synergy
Old Flitterfang
31%inclusion294 decks936 decks
30%synergy
Ashcoat of the Shadow Swarm
31%inclusion288 decks936 decks
27%synergy
Drainpipe Vermin
30%inclusion280 decks936 decks
29%synergy
Ink-Eyes, Servant of Oni
29%inclusion273 decks936 decks
26%synergy
Twisted Sewer-Witch
28%inclusion265 decks936 decks
27%synergy
Razortooth Rats
28%inclusion264 decks936 decks
28%synergy
Ruthless Radrat
25%inclusion238 decks936 decks
25%synergy
Engine Rat
24%inclusion118 decks496 decks
22%synergy
Nezumi Graverobber
21%inclusion196 decks936 decks
20%synergy
Mukotai Ambusher
21%inclusion196 decks936 decks
20%synergy
Throat Slitter
21%inclusion193 decks936 decks
19%synergy
Rotting Rats
20%inclusion188 decks936 decks
17%synergy
Innocuous Rat
20%inclusion142 decks711 decks
19%synergy
Locust Miser
20%inclusion183 decks936 decks
18%synergy
Valley Rotcaller
19%inclusion153 decks815 decks
16%synergy
Undercity Dire Rat
18%inclusion68 decks369 decks
17%synergy
Ayara, First of Locthwain
18%inclusion167 decks936 decks
-8%synergy
Sinuous Vermin
18%inclusion167 decks936 decks
17%synergy
Relentless Rats
18%inclusion165 decks936 decks
16%synergy
Refurbished Familiar
17%inclusion153 decks879 decks
15%synergy
Species Specialist
17%inclusion157 decks936 decks
13%synergy
Skullsnatcher
17%inclusion157 decks936 decks
16%synergy
Nezumi Bladeblesser
16%inclusion152 decks936 decks
16%synergy
Daggerfang Duo
14%inclusion112 decks796 decks
13%synergy
Okiba-Gang Shinobi
13%inclusion124 decks936 decks
12%synergy
Chittering Rats
13%inclusion121 decks936 decks
12%synergy
Gray Merchant of Asphodel
13%inclusion120 decks936 decks
-38%synergy
Adaptive Automaton
13%inclusion119 decks936 decks
12%synergy
Bog Rats
13%inclusion118 decks936 decks
12%synergy
Crypt Ghast
12%inclusion109 decks936 decks
-36%synergy
Thornplate Intimidator
11%inclusion87 decks806 decks
10%synergy
Nezumi Linkbreaker
11%inclusion99 decks936 decks
9%synergy
Scrib Nibblers
10%inclusion92 decks936 decks
9%synergy
Instants
Dark Ritual
51%inclusion478 decks936 decks
-16%synergy
Village Rites
42%inclusion392 decks936 decks
17%synergy
Defile
40%inclusion370 decks936 decks
3%synergy
Rat Out
32%inclusion298 decks936 decks
30%synergy
Grim Affliction
31%inclusion290 decks936 decks
29%synergy
Go for the Throat
30%inclusion284 decks936 decks
7%synergy
Tainted Strike
21%inclusion197 decks936 decks
18%synergy
Anoint with Affliction
21%inclusion193 decks936 decks
20%synergy
Corrupted Conviction
21%inclusion193 decks936 decks
8%synergy
Murder
20%inclusion191 decks936 decks
10%synergy
Deadly Dispute
19%inclusion177 decks936 decks
-7%synergy
Infernal Grasp
17%inclusion159 decks936 decks
-8%synergy
Tragic Slip
17%inclusion157 decks936 decks
-3%synergy
Foul-Tongue Shriek
15%inclusion144 decks936 decks
14%synergy
Consuming Corruption
14%inclusion127 decks881 decks
-1%synergy
Hero's Downfall
13%inclusion123 decks936 decks
6%synergy
Raise the Draugr
13%inclusion121 decks936 decks
12%synergy
Withering Torment
13%inclusion90 decks714 decks
-19%synergy
Doom Blade
12%inclusion108 decks936 decks
4%synergy
Virulent Wound
11%inclusion107 decks936 decks
11%synergy
Gravepurge
11%inclusion101 decks936 decks
9%synergy
Bitter Triumph
9.0%inclusion84 decks936 decks
-1%synergy
Malakir Rebirth
8.8%inclusion82 decks936 decks
-14%synergy
Fell the Profane
8.7%inclusion77 decks890 decks
-10%synergy
Deadly Rollick
7.5%inclusion70 decks936 decks
-17%synergy
Death Denied
7.2%inclusion67 decks936 decks
6%synergy
Not Dead After All
6.9%inclusion65 decks936 decks
-4%synergy
Offer Immortality
6.9%inclusion65 decks936 decks
5%synergy
Altar's Reap
6.8%inclusion64 decks936 decks
4%synergy
Sheoldred's Edict
6.6%inclusion62 decks936 decks
-8%synergy
Sudden Spoiling
6.0%inclusion56 decks936 decks
-3%synergy
Feign Death
5.6%inclusion52 decks936 decks
-3%synergy
Baleful Mastery
5.0%inclusion47 decks936 decks
-4%synergy
Sorceries
Phyresis Outbreak
44%inclusion415 decks936 decks
43%synergy
Feed the Swarm
40%inclusion374 decks936 decks
-11%synergy
Crippling Fear
39%inclusion365 decks936 decks
36%synergy
Revenge of the Rats
35%inclusion225 decks643 decks
32%synergy
Sign in Blood
32%inclusion303 decks936 decks
-3%synergy
Vat Emergence
31%inclusion290 decks936 decks
30%synergy
Patriarch's Bidding
29%inclusion269 decks936 decks
24%synergy
Kindred Dominance
25%inclusion233 decks936 decks
20%synergy
Spread the Sickness
21%inclusion195 decks936 decks
20%synergy
Swarmyard Massacre
19%inclusion151 decks796 decks
17%synergy
Read the Bones
18%inclusion171 decks936 decks
1%synergy
Bloodline Bidding
18%inclusion27 decks151 decks
13%synergy
Feed the Infection
16%inclusion150 decks936 decks
15%synergy
Night's Whisper
16%inclusion146 decks936 decks
-9%synergy
Unearth
13%inclusion125 decks936 decks
5%synergy
Gruesome Fate
13%inclusion122 decks936 decks
11%synergy
Diabolic Tutor
12%inclusion116 decks936 decks
-2%synergy
Echoing Return
12%inclusion115 decks936 decks
9%synergy
Plague of Vermin
12%inclusion110 decks936 decks
9%synergy
Geth's Summons
12%inclusion108 decks936 decks
11%synergy
Lab Rats
11%inclusion100 decks936 decks
10%synergy
Mutilate
10%inclusion95 decks936 decks
-7%synergy
Return from Extinction
10%inclusion93 decks936 decks
9%synergy
Victimize
10%inclusion89 decks936 decks
-17%synergy
Caress of Phyrexia
9.0%inclusion84 decks936 decks
8%synergy
Toxic Deluge
8.8%inclusion82 decks936 decks
-28%synergy
Pact of the Serpent
8.4%inclusion79 decks936 decks
7%synergy
Forever Young
7.5%inclusion70 decks936 decks
6%synergy
Haunting Voyage
6.9%inclusion65 decks936 decks
6%synergy
Fell
6.7%inclusion55 decks815 decks
3%synergy
Damnation
6.7%inclusion63 decks936 decks
-14%synergy
Syphon Mind
5.6%inclusion52 decks936 decks
-7%synergy
Diabolic Intent
5.2%inclusion49 decks936 decks
-10%synergy
Reanimate
5.2%inclusion49 decks936 decks
-34%synergy
Eaten Alive
5.0%inclusion47 decks936 decks
2%synergy
Utility Artifacts
Bontu's Monument
50%inclusion468 decks936 decks
22%synergy
Jet Medallion
43%inclusion405 decks936 decks
-18%synergy
Herald's Horn
43%inclusion399 decks936 decks
37%synergy
Contagion Clasp
32%inclusion300 decks936 decks
30%synergy
Vanquisher's Banner
30%inclusion281 decks936 decks
26%synergy
Skullclamp
29%inclusion270 decks936 decks
7%synergy
Swiftfoot Boots
19%inclusion181 decks936 decks
-12%synergy
Thrumming Stone
16%inclusion146 decks936 decks
12%synergy
Icon of Ancestry
15%inclusion136 decks936 decks
14%synergy
Contagion Engine
14%inclusion134 decks936 decks
12%synergy
Lightning Greaves
13%inclusion117 decks936 decks
-21%synergy
Chronicle of Victory
13%inclusion19 decks152 decks
9%synergy
Coat of Arms
12%inclusion113 decks936 decks
9%synergy
Prosthetic Injector
11%inclusion107 decks936 decks
11%synergy
Door of Destinies
11%inclusion104 decks936 decks
9%synergy
Banner of Kinship
11%inclusion70 decks645 decks
9%synergy
Whip of Erebos
10%inclusion96 decks936 decks
-1%synergy
Grafted Exoskeleton
10%inclusion94 decks936 decks
9%synergy
Eldrazi Monument
7.3%inclusion68 decks936 decks
6%synergy
Wayfarer's Bauble
7.1%inclusion66 decks936 decks
-8%synergy
Vat of Rebirth
6.0%inclusion56 decks936 decks
2%synergy
Hall of Triumph
5.7%inclusion53 decks936 decks
5%synergy
The Darkness Crystal
5.6%inclusion21 decks376 decks
-14%synergy
Whispersilk Cloak
5.0%inclusion47 decks936 decks
-1%synergy
Enchantments
Necrogen Communion
43%inclusion399 decks936 decks
41%synergy
Phyrexian Arena
36%inclusion334 decks936 decks
-4%synergy
Cover of Darkness
26%inclusion242 decks936 decks
23%synergy
Bad Moon
24%inclusion225 decks936 decks
21%synergy
Phyresis
21%inclusion197 decks936 decks
19%synergy
Haunted One
21%inclusion193 decks936 decks
18%synergy
Oversold Cemetery
19%inclusion176 decks936 decks
13%synergy
Tribute to Horobi
17%inclusion159 decks936 decks
16%synergy
Black Market
13%inclusion117 decks936 decks
-9%synergy
Grave Pact
11%inclusion106 decks936 decks
-8%synergy
Black Market Connections
10%inclusion94 decks936 decks
-14%synergy
Vampiric Rites
10%inclusion93 decks936 decks
4%synergy
Lord Skitter's Blessing
9.1%inclusion85 decks936 decks
8%synergy
Intimidation
8.4%inclusion79 decks936 decks
8%synergy
Dictate of Erebos
6.3%inclusion59 decks936 decks
-5%synergy
Planeswalkers
Vraska, Betrayal's Sting
24%inclusion229 decks936 decks
22%synergy
Liliana of the Dark Realms
8.0%inclusion75 decks936 decks
-6%synergy
Utility Lands
Swarmyard
48%inclusion449 decks936 decks
42%synergy
Karn's Bastion
42%inclusion394 decks936 decks
38%synergy
Bojuka Bog
40%inclusion377 decks936 decks
-7%synergy
Rogue's Passage
40%inclusion377 decks936 decks
21%synergy
Mudflat Village
37%inclusion302 decks823 decks
34%synergy
Cabal Coffers
28%inclusion263 decks936 decks
-27%synergy
Witch's Cottage
26%inclusion248 decks936 decks
2%synergy
Mortuary Mire
24%inclusion220 decks936 decks
10%synergy
Cabal Stronghold
20%inclusion191 decks936 decks
-14%synergy
Reliquary Tower
18%inclusion172 decks936 decks
-12%synergy
Access Tunnel
18%inclusion169 decks936 decks
15%synergy
Three Tree City
16%inclusion132 decks815 decks
12%synergy
Urborg, Tomb of Yawgmoth
13%inclusion126 decks936 decks
-24%synergy
Nykthos, Shrine to Nyx
12%inclusion111 decks936 decks
-18%synergy
Castle Locthwain
11%inclusion99 decks936 decks
-6%synergy
Barren Moor
10%inclusion93 decks936 decks
0%synergy
War Room
8.7%inclusion81 decks936 decks
-7%synergy
Secret Tunnel
8.3%inclusion18 decks216 decks
7%synergy
Phyrexian Tower
7.5%inclusion70 decks936 decks
-18%synergy
Crypt of Agadeem
7.5%inclusion70 decks936 decks
-4%synergy
Temple of the False God
6.9%inclusion65 decks936 decks
-1%synergy
The Dross Pits
6.4%inclusion60 decks936 decks
5%synergy
Shizo, Death's Storehouse
5.9%inclusion55 decks936 decks
-4%synergy
Memorial to Folly
5.2%inclusion49 decks936 decks
2%synergy
Minas Morgul, Dark Fortress
5.0%inclusion47 decks936 decks
2%synergy
Mana Artifacts
Sol Ring
75%inclusion702 decks936 decks
-11%synergy
Arcane Signet
47%inclusion444 decks936 decks
-14%synergy
Glistening Sphere
34%inclusion321 decks936 decks
33%synergy
Charcoal Diamond
26%inclusion244 decks936 decks
4%synergy
Patchwork Banner
24%inclusion193 decks806 decks
20%synergy
Heraldic Banner
19%inclusion174 decks936 decks
13%synergy
Mind Stone
18%inclusion164 decks936 decks
-12%synergy
Staff of Compleation
15%inclusion144 decks936 decks
14%synergy
Phyrexian Atlas
15%inclusion137 decks936 decks
14%synergy
Caged Sun
10%inclusion94 decks936 decks
-1%synergy
Thought Vessel
8.8%inclusion82 decks936 decks
-17%synergy
Commander's Sphere
7.8%inclusion73 decks936 decks
-1%synergy
Gauntlet of Power
5.0%inclusion47 decks936 decks
2%synergy
Lands
Swamp
99%inclusion924 decks936 decks
4%synergy
Path of Ancestry
36%inclusion340 decks936 decks
31%synergy
Myriad Landscape
19%inclusion182 decks936 decks
-6%synergy
Malakir Rebirth
8.8%inclusion82 decks936 decks
-14%synergy
Fell the Profane
8.7%inclusion77 decks890 decks
-10%synergy
Command Tower
8.3%inclusion78 decks936 decks
3%synergy
Escape Tunnel
8.1%inclusion76 decks936 decks
7%synergy
Cavern of Souls
8.0%inclusion75 decks936 decks
1%synergy
Evolving Wilds
6.0%inclusion56 decks936 decks
2%synergy