Karumonix, the Rat King (Commander) - Core

Karumonix, the Rat King
Rank #393
899decks
As CommanderAs CardAverage DeckDecks
Bracket
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.
Deck Filters
Cardsphere
Archidekt
Commander Spellbook
Moxfield
Scryfall
MTGStocks
New Cards
High Synergy Cards
Top Cards
Creatures
Instants
Sorceries
Utility Artifacts
Enchantments
Planeswalkers
Utility Lands
Mana Artifacts
Lands
Back to Top
Emeritus of Woe
2.0%inclusion2 decks99 decks
-6%synergy
Arnyn, Deathbloom Botanist
2.0%inclusion2 decks99 decks
-1%synergy
Decorum Dissertation
2.0%inclusion2 decks101 decks
-4%synergy
Sneering Shadewriter
1.0%inclusion1 decks96 decks
1%synergy
Forum Necroscribe
1.0%inclusion1 decks99 decks
0%synergy
High Synergy Cards
Blightbelly Rat
85%inclusion764 decks899 decks
82%synergy
Piper of the Swarm
82%inclusion740 decks899 decks
75%synergy
Pack Rat
75%inclusion672 decks899 decks
69%synergy
Ichor Rats
71%inclusion637 decks899 decks
68%synergy
Ogre Slumlord
77%inclusion691 decks899 decks
67%synergy
Marrow-Gnawer
69%inclusion621 decks899 decks
66%synergy
Typhoid Rats
69%inclusion619 decks899 decks
65%synergy
Infectious Inquiry
66%inclusion593 decks899 decks
63%synergy
Rancid Rats
64%inclusion571 decks899 decks
61%synergy
Vraska's Fall
63%inclusion569 decks899 decks
60%synergy
Top Cards
Lord Skitter, Sewer King
68%inclusion613 decks899 decks
60%synergy
Lord Skitter's Butcher
62%inclusion559 decks899 decks
59%synergy
Septic Rats
62%inclusion554 decks899 decks
60%synergy
Drown in Ichor
60%inclusion540 decks899 decks
56%synergy
Crypt Rats
59%inclusion534 decks899 decks
55%synergy
Tangled Colony
58%inclusion519 decks899 decks
55%synergy
Voracious Vermin
56%inclusion506 decks899 decks
53%synergy
Burglar Rat
56%inclusion505 decks899 decks
45%synergy
Dark Ritual
52%inclusion467 decks899 decks
-15%synergy
Rat Colony
51%inclusion458 decks899 decks
45%synergy
Creatures
Stronghold Rats
48%inclusion433 decks899 decks
45%synergy
Persistent Marshstalker
46%inclusion396 decks864 decks
43%synergy
Chittering Skitterling
45%inclusion408 decks899 decks
44%synergy
Gnat Miser
44%inclusion397 decks899 decks
41%synergy
Wave of Rats
43%inclusion383 decks899 decks
41%synergy
Pestilence Rats
40%inclusion356 decks899 decks
38%synergy
Ratcatcher
39%inclusion354 decks899 decks
36%synergy
Ruin Rat
36%inclusion326 decks899 decks
35%synergy
Nezumi Prowler
36%inclusion321 decks899 decks
34%synergy
Swarm of Rats
35%inclusion318 decks899 decks
33%synergy
Nezumi Informant
34%inclusion305 decks899 decks
27%synergy
Ravenous Rats
34%inclusion302 decks899 decks
32%synergy
Gnawing Vermin
33%inclusion301 decks899 decks
32%synergy
Chittering Witch
33%inclusion300 decks899 decks
29%synergy
Changeling Outcast
33%inclusion297 decks899 decks
28%synergy
Nezumi Cutthroat
33%inclusion293 decks899 decks
32%synergy
Nashi, Moon Sage's Scion
31%inclusion279 decks899 decks
27%synergy
Ashcoat of the Shadow Swarm
31%inclusion278 decks899 decks
27%synergy
Old Flitterfang
30%inclusion268 decks899 decks
29%synergy
Ink-Eyes, Servant of Oni
30%inclusion266 decks899 decks
26%synergy
Drainpipe Vermin
29%inclusion263 decks899 decks
28%synergy
Rat King, Pale Piper
28%inclusion49 decks172 decks
24%synergy
Razortooth Rats
28%inclusion250 decks899 decks
27%synergy
Twisted Sewer-Witch
27%inclusion244 decks899 decks
26%synergy
Rat King, Verminister
25%inclusion51 decks202 decks
22%synergy
Engine Rat
25%inclusion137 decks553 decks
23%synergy
Ruthless Radrat
24%inclusion219 decks899 decks
24%synergy
Mukotai Ambusher
20%inclusion183 decks899 decks
20%synergy
Nezumi Graverobber
20%inclusion178 decks899 decks
18%synergy
Rotting Rats
20%inclusion177 decks899 decks
17%synergy
Throat Slitter
20%inclusion177 decks899 decks
18%synergy
Undercity Dire Rat
19%inclusion82 decks426 decks
17%synergy
Innocuous Rat
19%inclusion147 decks767 decks
18%synergy
Valley Rotcaller
19%inclusion165 decks868 decks
16%synergy
Locust Miser
18%inclusion165 decks899 decks
17%synergy
Relentless Rats
18%inclusion160 decks899 decks
16%synergy
Species Specialist
17%inclusion155 decks899 decks
14%synergy
Ayara, First of Locthwain
17%inclusion154 decks899 decks
-8%synergy
Refurbished Familiar
17%inclusion153 decks899 decks
15%synergy
Sinuous Vermin
17%inclusion153 decks899 decks
17%synergy
Nezumi Bladeblesser
16%inclusion148 decks899 decks
16%synergy
Skullsnatcher
16%inclusion144 decks899 decks
15%synergy
Daggerfang Duo
14%inclusion120 decks849 decks
13%synergy
Chittering Rats
13%inclusion117 decks899 decks
12%synergy
Okiba-Gang Shinobi
13%inclusion116 decks899 decks
12%synergy
Gray Merchant of Asphodel
13%inclusion115 decks899 decks
-38%synergy
Adaptive Automaton
12%inclusion110 decks899 decks
11%synergy
Crypt Ghast
12%inclusion106 decks899 decks
-36%synergy
Bog Rats
12%inclusion105 decks899 decks
11%synergy
Thornplate Intimidator
10%inclusion88 decks859 decks
9%synergy
Instants
Whisper of the Dross
50%inclusion452 decks899 decks
48%synergy
Village Rites
41%inclusion367 decks899 decks
15%synergy
Defile
40%inclusion359 decks899 decks
4%synergy
Grim Affliction
31%inclusion277 decks899 decks
29%synergy
Rat Out
31%inclusion275 decks899 decks
29%synergy
Go for the Throat
30%inclusion269 decks899 decks
7%synergy
Corrupted Conviction
21%inclusion190 decks899 decks
9%synergy
Tainted Strike
21%inclusion189 decks899 decks
18%synergy
Anoint with Affliction
21%inclusion185 decks899 decks
20%synergy
Murder
20%inclusion179 decks899 decks
10%synergy
Deadly Dispute
19%inclusion170 decks899 decks
-7%synergy
Tragic Slip
17%inclusion155 decks899 decks
-2%synergy
Infernal Grasp
17%inclusion154 decks899 decks
-8%synergy
Consuming Corruption
15%inclusion135 decks899 decks
-1%synergy
Foul-Tongue Shriek
15%inclusion134 decks899 decks
13%synergy
Hero's Downfall
14%inclusion122 decks899 decks
7%synergy
Raise the Draugr
12%inclusion112 decks899 decks
12%synergy
Withering Torment
12%inclusion93 decks770 decks
-19%synergy
Doom Blade
12%inclusion108 decks899 decks
5%synergy
Virulent Wound
12%inclusion105 decks899 decks
11%synergy
Gravepurge
11%inclusion96 decks899 decks
9%synergy
Fell the Profane
8.9%inclusion80 decks899 decks
-10%synergy
Malakir Rebirth
8.7%inclusion78 decks899 decks
-14%synergy
Deadly Rollick
7.8%inclusion70 decks899 decks
-17%synergy
Offer Immortality
7.5%inclusion67 decks899 decks
5%synergy
Bitter Triumph
7.3%inclusion66 decks899 decks
-2%synergy
Altar's Reap
7.0%inclusion63 decks899 decks
5%synergy
Not Dead After All
6.9%inclusion62 decks899 decks
-4%synergy
Death Denied
6.5%inclusion58 decks899 decks
6%synergy
Sheoldred's Edict
6.1%inclusion55 decks899 decks
-9%synergy
Feign Death
5.6%inclusion50 decks899 decks
-3%synergy
Sudden Spoiling
5.3%inclusion48 decks899 decks
-3%synergy
Baleful Mastery
5.0%inclusion45 decks899 decks
-3%synergy
Sorceries
Phyresis Outbreak
44%inclusion393 decks899 decks
42%synergy
Feed the Swarm
39%inclusion353 decks899 decks
-11%synergy
Crippling Fear
38%inclusion341 decks899 decks
35%synergy
Revenge of the Rats
34%inclusion240 decks700 decks
31%synergy
Sign in Blood
32%inclusion286 decks899 decks
-3%synergy
Vat Emergence
30%inclusion273 decks899 decks
29%synergy
Patriarch's Bidding
28%inclusion248 decks899 decks
23%synergy
Kindred Dominance
24%inclusion219 decks899 decks
20%synergy
Spread the Sickness
21%inclusion188 decks899 decks
20%synergy
Swarmyard Massacre
19%inclusion159 decks849 decks
16%synergy
Bloodline Bidding
18%inclusion39 decks212 decks
14%synergy
Read the Bones
18%inclusion160 decks899 decks
1%synergy
Feed the Infection
16%inclusion147 decks899 decks
16%synergy
Night's Whisper
16%inclusion140 decks899 decks
-9%synergy
Diabolic Tutor
13%inclusion114 decks899 decks
-1%synergy
Unearth
13%inclusion114 decks899 decks
4%synergy
Gruesome Fate
12%inclusion111 decks899 decks
10%synergy
Echoing Return
12%inclusion108 decks899 decks
9%synergy
Plague of Vermin
11%inclusion100 decks899 decks
9%synergy
Geth's Summons
11%inclusion97 decks899 decks
10%synergy
Victimize
10%inclusion93 decks899 decks
-17%synergy
Lab Rats
10%inclusion93 decks899 decks
10%synergy
Mutilate
10%inclusion87 decks899 decks
-7%synergy
Return from Extinction
9.5%inclusion85 decks899 decks
9%synergy
Caress of Phyrexia
9.2%inclusion83 decks899 decks
9%synergy
Toxic Deluge
8.9%inclusion80 decks899 decks
-28%synergy
Forever Young
7.8%inclusion70 decks899 decks
6%synergy
Pact of the Serpent
7.7%inclusion69 decks899 decks
6%synergy
Damnation
7.1%inclusion64 decks899 decks
-13%synergy
Fell
6.6%inclusion57 decks868 decks
3%synergy
Haunting Voyage
6.6%inclusion59 decks899 decks
5%synergy
Syphon Mind
5.3%inclusion48 decks899 decks
-7%synergy
Reanimate
5.3%inclusion48 decks899 decks
-35%synergy
Diabolic Intent
5.1%inclusion46 decks899 decks
-10%synergy
Eaten Alive
5.0%inclusion45 decks899 decks
1%synergy
Utility Artifacts
Bontu's Monument
49%inclusion445 decks899 decks
21%synergy
Jet Medallion
45%inclusion404 decks899 decks
-17%synergy
Herald's Horn
42%inclusion378 decks899 decks
36%synergy
Contagion Clasp
31%inclusion278 decks899 decks
29%synergy
Vanquisher's Banner
30%inclusion269 decks899 decks
26%synergy
Skullclamp
29%inclusion264 decks899 decks
7%synergy
Swiftfoot Boots
19%inclusion172 decks899 decks
-12%synergy
Thrumming Stone
15%inclusion139 decks899 decks
11%synergy
Contagion Engine
14%inclusion130 decks899 decks
13%synergy
Icon of Ancestry
13%inclusion119 decks899 decks
12%synergy
Lightning Greaves
13%inclusion119 decks899 decks
-20%synergy
Coat of Arms
12%inclusion105 decks899 decks
9%synergy
Prosthetic Injector
11%inclusion103 decks899 decks
11%synergy
Chronicle of Victory
11%inclusion24 decks213 decks
8%synergy
Door of Destinies
11%inclusion100 decks899 decks
9%synergy
Banner of Kinship
11%inclusion75 decks702 decks
9%synergy
Whip of Erebos
11%inclusion95 decks899 decks
-0%synergy
Grafted Exoskeleton
10%inclusion89 decks899 decks
9%synergy
Wayfarer's Bauble
7.5%inclusion67 decks899 decks
-7%synergy
Eldrazi Monument
7.0%inclusion63 decks899 decks
5%synergy
The Darkness Crystal
6.0%inclusion26 decks433 decks
-14%synergy
Hall of Triumph
5.5%inclusion49 decks899 decks
5%synergy
Vat of Rebirth
5.3%inclusion48 decks899 decks
2%synergy
Whispersilk Cloak
5.1%inclusion46 decks899 decks
-1%synergy
Enchantments
Necrogen Communion
42%inclusion381 decks899 decks
41%synergy
Phyrexian Arena
35%inclusion314 decks899 decks
-5%synergy
Cover of Darkness
28%inclusion252 decks899 decks
25%synergy
Bad Moon
24%inclusion213 decks899 decks
20%synergy
Phyresis
21%inclusion188 decks899 decks
19%synergy
Haunted One
19%inclusion175 decks899 decks
17%synergy
Oversold Cemetery
18%inclusion162 decks899 decks
13%synergy
Tribute to Horobi
16%inclusion144 decks899 decks
15%synergy
Black Market
12%inclusion109 decks899 decks
-9%synergy
Grave Pact
12%inclusion104 decks899 decks
-8%synergy
Black Market Connections
11%inclusion98 decks899 decks
-13%synergy
Vampiric Rites
10%inclusion87 decks899 decks
4%synergy
Intimidation
8.8%inclusion79 decks899 decks
8%synergy
Lord Skitter's Blessing
8.6%inclusion77 decks899 decks
8%synergy
Dictate of Erebos
6.1%inclusion55 decks899 decks
-5%synergy
Phyrexian Reclamation
5.6%inclusion50 decks899 decks
-4%synergy
Dark Prophecy
5.1%inclusion46 decks899 decks
1%synergy
Planeswalkers
Vraska, Betrayal's Sting
25%inclusion227 decks899 decks
23%synergy
Liliana of the Dark Realms
8.0%inclusion72 decks899 decks
-6%synergy
Utility Lands
Swarmyard
49%inclusion438 decks899 decks
43%synergy
Karn's Bastion
41%inclusion370 decks899 decks
37%synergy
Rogue's Passage
40%inclusion361 decks899 decks
21%synergy
Bojuka Bog
39%inclusion349 decks899 decks
-8%synergy
Mudflat Village
37%inclusion325 decks876 decks
34%synergy
Cabal Coffers
29%inclusion258 decks899 decks
-26%synergy
Witch's Cottage
25%inclusion228 decks899 decks
1%synergy
Mortuary Mire
23%inclusion203 decks899 decks
10%synergy
Cabal Stronghold
21%inclusion187 decks899 decks
-14%synergy
Reliquary Tower
18%inclusion160 decks899 decks
-12%synergy
Access Tunnel
17%inclusion153 decks899 decks
14%synergy
Three Tree City
16%inclusion142 decks868 decks
12%synergy
Urborg, Tomb of Yawgmoth
14%inclusion125 decks899 decks
-24%synergy
Nykthos, Shrine to Nyx
12%inclusion108 decks899 decks
-18%synergy
Castle Locthwain
10%inclusion93 decks899 decks
-6%synergy
Barren Moor
10%inclusion87 decks899 decks
0%synergy
Secret Tunnel
8.7%inclusion24 decks277 decks
7%synergy
Phyrexian Tower
8.2%inclusion74 decks899 decks
-18%synergy
Crypt of Agadeem
7.9%inclusion71 decks899 decks
-4%synergy
War Room
7.2%inclusion65 decks899 decks
-9%synergy
The Dross Pits
6.3%inclusion57 decks899 decks
5%synergy
Temple of the False God
6.3%inclusion57 decks899 decks
-1%synergy
Shizo, Death's Storehouse
5.8%inclusion52 decks899 decks
-4%synergy
Memorial to Folly
5.3%inclusion48 decks899 decks
2%synergy
Mana Artifacts
Sol Ring
75%inclusion672 decks899 decks
-11%synergy
Arcane Signet
47%inclusion425 decks899 decks
-14%synergy
Glistening Sphere
34%inclusion303 decks899 decks
33%synergy
Charcoal Diamond
27%inclusion240 decks899 decks
5%synergy
Patchwork Banner
24%inclusion203 decks859 decks
19%synergy
Heraldic Banner
19%inclusion167 decks899 decks
13%synergy
Mind Stone
18%inclusion162 decks899 decks
-10%synergy
Staff of Compleation
16%inclusion141 decks899 decks
14%synergy
Phyrexian Atlas
14%inclusion123 decks899 decks
13%synergy
Caged Sun
9.5%inclusion85 decks899 decks
-1%synergy
Thought Vessel
8.5%inclusion76 decks899 decks
-17%synergy
Commander's Sphere
7.9%inclusion71 decks899 decks
-0%synergy
Lands
Swamp
99%inclusion889 decks899 decks
4%synergy
Path of Ancestry
35%inclusion316 decks899 decks
30%synergy
Myriad Landscape
19%inclusion174 decks899 decks
-6%synergy
Big Apple, 3 a.m.
10%inclusion17 decks172 decks
8%synergy
Fell the Profane
8.9%inclusion80 decks899 decks
-10%synergy
Cavern of Souls
8.7%inclusion78 decks899 decks
2%synergy
Malakir Rebirth
8.7%inclusion78 decks899 decks
-14%synergy
Command Tower
8.1%inclusion73 decks899 decks
2%synergy
Escape Tunnel
7.7%inclusion69 decks899 decks
7%synergy
Evolving Wilds
5.2%inclusion47 decks899 decks
1%synergy
About UsContactPrivacy PolicyTerms of Service
Space Cow MediaArchidektCardsphereCommander SpellbookFABRECSpellvoid
Space Cow MediaArchidektCommander's Herald
Commander SpellbookFABRECSpellvoid
EDHREC is unofficial Fan Content permitted under the Fan Content Policy. Not approved/endorsed by Wizards. Portions of the materials used are property of Wizards of the Coast. ©Wizards of the Coast LLC.
next@15 test