Karumonix, the Rat King (Commander) - Optimized Rats

Karumonix, the Rat King
Rank #393
6decks
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
High Synergy Cards
Top Cards
Game Changers
Creatures
Instants
Sorceries
Utility Artifacts
Enchantments
Planeswalkers
Utility Lands
Mana Artifacts
Lands
Back to Top
Rancid Rats
100%inclusion6 decks6 decks
98%synergy
Ichor Rats
100%inclusion6 decks6 decks
97%synergy
Marrow-Gnawer
100%inclusion6 decks6 decks
97%synergy
Pack Rat
100%inclusion6 decks6 decks
94%synergy
Ogre Slumlord
100%inclusion6 decks6 decks
90%synergy
Infectious Inquiry
83%inclusion5 decks6 decks
81%synergy
Cover of Darkness
83%inclusion5 decks6 decks
80%synergy
Blightbelly Rat
83%inclusion5 decks6 decks
80%synergy
Typhoid Rats
83%inclusion5 decks6 decks
80%synergy
Swarmyard
83%inclusion5 decks6 decks
78%synergy
Top Cards
Piper of the Swarm
83%inclusion5 decks6 decks
76%synergy
Vraska's Fall
67%inclusion4 decks6 decks
63%synergy
Grave Pact
67%inclusion4 decks6 decks
47%synergy
Ashcoat of the Shadow Swarm
67%inclusion4 decks6 decks
63%synergy
Reanimate
67%inclusion4 decks6 decks
27%synergy
Gnat Miser
67%inclusion4 decks6 decks
64%synergy
Drown in Ichor
67%inclusion4 decks6 decks
63%synergy
Stronghold Rats
67%inclusion4 decks6 decks
63%synergy
Phyrexian Arena
67%inclusion4 decks6 decks
27%synergy
Lord Skitter, Sewer King
67%inclusion4 decks6 decks
58%synergy
Game Changers
Demonic Tutor
33%inclusion2 decks6 decks
6%synergy
Necropotence
33%inclusion2 decks6 decks
19%synergy
Vampiric Tutor
33%inclusion2 decks6 decks
12%synergy
Imperial Seal
17%inclusion1 decks6 decks
10%synergy
Ancient Tomb
17%inclusion1 decks6 decks
5%synergy
Bolas's Citadel
17%inclusion1 decks6 decks
-12%synergy
Mana Vault
17%inclusion1 decks6 decks
10%synergy
Creatures
Burglar Rat
50%inclusion3 decks6 decks
39%synergy
Ayara, First of Locthwain
50%inclusion3 decks6 decks
25%synergy
Lord Skitter's Butcher
50%inclusion3 decks6 decks
47%synergy
Ink-Eyes, Servant of Oni
50%inclusion3 decks6 decks
47%synergy
Swarm of Rats
50%inclusion3 decks6 decks
48%synergy
Chittering Skitterling
50%inclusion3 decks6 decks
49%synergy
Valley Rotcaller
50%inclusion3 decks6 decks
47%synergy
Drainpipe Vermin
50%inclusion3 decks6 decks
49%synergy
Rat Colony
50%inclusion3 decks6 decks
44%synergy
Chittering Rats
33%inclusion2 decks6 decks
33%synergy
Crypt Rats
33%inclusion2 decks6 decks
29%synergy
Gnawing Vermin
33%inclusion2 decks6 decks
32%synergy
Tangled Colony
33%inclusion2 decks6 decks
30%synergy
Locust Miser
33%inclusion2 decks6 decks
32%synergy
Voracious Vermin
33%inclusion2 decks6 decks
30%synergy
Twisted Sewer-Witch
33%inclusion2 decks6 decks
32%synergy
Changeling Outcast
33%inclusion2 decks6 decks
28%synergy
Ratcatcher
33%inclusion2 decks6 decks
30%synergy
Septic Rats
33%inclusion2 decks6 decks
31%synergy
Ruin Rat
33%inclusion2 decks6 decks
32%synergy
Bog Rats
17%inclusion1 decks6 decks
16%synergy
Mirkwood Bats
17%inclusion1 decks6 decks
8%synergy
Relentless Rats
17%inclusion1 decks6 decks
15%synergy
Nezumi Graverobber
17%inclusion1 decks6 decks
15%synergy
Graveshifter
17%inclusion1 decks6 decks
16%synergy
Vampire Cutthroat
17%inclusion1 decks6 decks
14%synergy
Ravenous Rats
17%inclusion1 decks6 decks
15%synergy
Ruthless Radrat
17%inclusion1 decks6 decks
16%synergy
Roaming Throne
17%inclusion1 decks6 decks
14%synergy
Nezumi Bladeblesser
17%inclusion1 decks6 decks
16%synergy
Filth
17%inclusion1 decks6 decks
14%synergy
Insatiable Frugivore
17%inclusion1 decks6 decks
16%synergy
Bloodline Pretender
17%inclusion1 decks6 decks
16%synergy
Species Specialist
17%inclusion1 decks6 decks
13%synergy
Skullsnatcher
17%inclusion1 decks6 decks
16%synergy
Throat Slitter
17%inclusion1 decks6 decks
15%synergy
Zodiac Rat
17%inclusion1 decks6 decks
16%synergy
Sinuous Vermin
17%inclusion1 decks6 decks
16%synergy
Nirkana Revenant
17%inclusion1 decks6 decks
6%synergy
Razortooth Rats
17%inclusion1 decks6 decks
16%synergy
Vito, Thorn of the Dusk Rose
17%inclusion1 decks6 decks
6%synergy
Persistent Marshstalker
17%inclusion1 decks6 decks
14%synergy
Drana, Liberator of Malakir
17%inclusion1 decks6 decks
14%synergy
Chittering Witch
17%inclusion1 decks6 decks
12%synergy
Jade-Cast Sentinel
17%inclusion1 decks6 decks
17%synergy
Nezumi Cutthroat
17%inclusion1 decks6 decks
16%synergy
Crypt Ghast
17%inclusion1 decks6 decks
-31%synergy
Erebos, Bleak-Hearted
17%inclusion1 decks6 decks
14%synergy
Mephidross Vampire
17%inclusion1 decks6 decks
17%synergy
Nezumi Informant
17%inclusion1 decks6 decks
10%synergy
Instants
Dark Ritual
50%inclusion3 decks6 decks
-17%synergy
Cabal Ritual
50%inclusion3 decks6 decks
32%synergy
Zuko's Conviction
50%inclusion1 decks2 decks
49%synergy
Hagra Mauling
33%inclusion2 decks6 decks
29%synergy
Whisper of the Dross
33%inclusion2 decks6 decks
31%synergy
Village Rites
33%inclusion2 decks6 decks
8%synergy
Rat Out
33%inclusion2 decks6 decks
32%synergy
Consuming Corruption
33%inclusion2 decks6 decks
18%synergy
Defile
33%inclusion2 decks6 decks
-3%synergy
Undying Malice
33%inclusion2 decks6 decks
23%synergy
Tainted Strike
33%inclusion2 decks6 decks
30%synergy
Feign Death
33%inclusion2 decks6 decks
25%synergy
Fight On!
25%inclusion1 decks4 decks
23%synergy
Deadly Rollick
17%inclusion1 decks6 decks
-8%synergy
Fell the Profane
17%inclusion1 decks6 decks
-3%synergy
Cut Down
17%inclusion1 decks6 decks
13%synergy
Sheoldred's Edict
17%inclusion1 decks6 decks
2%synergy
Go for the Throat
17%inclusion1 decks6 decks
-6%synergy
Snuff Out
17%inclusion1 decks6 decks
3%synergy
Not Dead After All
17%inclusion1 decks6 decks
5%synergy
Anoint with Affliction
17%inclusion1 decks6 decks
16%synergy
Grim Affliction
17%inclusion1 decks6 decks
15%synergy
Grasp of Darkness
17%inclusion1 decks6 decks
15%synergy
Doom Blade
17%inclusion1 decks6 decks
10%synergy
Hellish Rebuke
17%inclusion1 decks6 decks
15%synergy
Supernatural Stamina
17%inclusion1 decks6 decks
9%synergy
Withering Boon
17%inclusion1 decks6 decks
12%synergy
Murder
17%inclusion1 decks6 decks
7%synergy
Infernal Grasp
17%inclusion1 decks6 decks
-8%synergy
Death Denied
17%inclusion1 decks6 decks
16%synergy
Presumed Dead
17%inclusion1 decks6 decks
16%synergy
Malakir Rebirth
17%inclusion1 decks6 decks
-6%synergy
You Are Already Dead
17%inclusion1 decks6 decks
16%synergy
Fake Your Own Death
17%inclusion1 decks6 decks
9%synergy
Baleful Mastery
17%inclusion1 decks6 decks
8%synergy
Tragic Slip
17%inclusion1 decks6 decks
-3%synergy
Sorceries
Phyresis Outbreak
50%inclusion3 decks6 decks
48%synergy
Feed the Swarm
50%inclusion3 decks6 decks
-0%synergy
Revenge of the Rats
33%inclusion2 decks6 decks
30%synergy
Insatiable Avarice
33%inclusion2 decks6 decks
22%synergy
Toxic Deluge
33%inclusion2 decks6 decks
-3%synergy
Plague of Vermin
33%inclusion2 decks6 decks
31%synergy
Vat Emergence
17%inclusion1 decks6 decks
15%synergy
Spread the Sickness
17%inclusion1 decks6 decks
16%synergy
Victimize
17%inclusion1 decks6 decks
-10%synergy
Patriarch's Bidding
17%inclusion1 decks6 decks
13%synergy
Damnable Pact
17%inclusion1 decks6 decks
13%synergy
Entreat the Dead
17%inclusion1 decks6 decks
16%synergy
Final Act
17%inclusion1 decks6 decks
15%synergy
Unearth
17%inclusion1 decks6 decks
8%synergy
Agadeem's Awakening
17%inclusion1 decks6 decks
9%synergy
Mutilate
17%inclusion1 decks6 decks
0%synergy
Profane Command
17%inclusion1 decks6 decks
15%synergy
Night's Whisper
17%inclusion1 decks6 decks
-8%synergy
Exsanguinate
17%inclusion1 decks6 decks
-8%synergy
Living Death
17%inclusion1 decks6 decks
6%synergy
In Garruk's Wake
17%inclusion1 decks6 decks
13%synergy
Dirge of Dread
17%inclusion1 decks6 decks
16%synergy
Geth's Summons
17%inclusion1 decks6 decks
16%synergy
Sign in Blood
17%inclusion1 decks6 decks
-18%synergy
Raise Dead
17%inclusion1 decks6 decks
16%synergy
Kindred Dominance
17%inclusion1 decks6 decks
12%synergy
Damnation
17%inclusion1 decks6 decks
-4%synergy
Disentomb
17%inclusion1 decks6 decks
16%synergy
Utility Artifacts
Swiftfoot Boots
50%inclusion3 decks6 decks
19%synergy
Lightning Greaves
50%inclusion3 decks6 decks
16%synergy
Contagion Clasp
33%inclusion2 decks6 decks
31%synergy
Coat of Arms
33%inclusion2 decks6 decks
31%synergy
Skullclamp
33%inclusion2 decks6 decks
11%synergy
Bontu's Monument
33%inclusion2 decks6 decks
5%synergy
Akroma's Memorial
33%inclusion2 decks6 decks
32%synergy
Jet Medallion
33%inclusion2 decks6 decks
-29%synergy
Thornbite Staff
33%inclusion2 decks6 decks
31%synergy
The Darkness Crystal
25%inclusion1 decks4 decks
5%synergy
Contagion Engine
17%inclusion1 decks6 decks
15%synergy
Leyline Axe
17%inclusion1 decks6 decks
16%synergy
Whip of Erebos
17%inclusion1 decks6 decks
6%synergy
Mimic Vat
17%inclusion1 decks6 decks
15%synergy
Sword of the Squeak
17%inclusion1 decks6 decks
16%synergy
Hall of Triumph
17%inclusion1 decks6 decks
16%synergy
Wishclaw Talisman
17%inclusion1 decks6 decks
10%synergy
Blade of the Bloodchief
17%inclusion1 decks6 decks
15%synergy
Banner of Kinship
17%inclusion1 decks6 decks
15%synergy
Phyrexian Altar
17%inclusion1 decks6 decks
3%synergy
Expedition Map
17%inclusion1 decks6 decks
5%synergy
Well of Knowledge
17%inclusion1 decks6 decks
17%synergy
Well of Lost Dreams
17%inclusion1 decks6 decks
15%synergy
Conjurer's Closet
17%inclusion1 decks6 decks
14%synergy
Strionic Resonator
17%inclusion1 decks6 decks
15%synergy
Decimator Web
17%inclusion1 decks6 decks
17%synergy
Grafted Exoskeleton
17%inclusion1 decks6 decks
16%synergy
Enchantments
Black Market
33%inclusion2 decks6 decks
13%synergy
Phyrexian Reclamation
33%inclusion2 decks6 decks
23%synergy
Vampiric Rites
33%inclusion2 decks6 decks
27%synergy
Dictate of Erebos
33%inclusion2 decks6 decks
22%synergy
Intimidation
33%inclusion2 decks6 decks
33%synergy
Animate Dead
33%inclusion2 decks6 decks
16%synergy
Contamination
17%inclusion1 decks6 decks
13%synergy
Necrosynthesis
17%inclusion1 decks6 decks
16%synergy
Haunted One
17%inclusion1 decks6 decks
14%synergy
Necromancy
17%inclusion1 decks6 decks
11%synergy
Sanguine Bond
17%inclusion1 decks6 decks
5%synergy
Phyresis
17%inclusion1 decks6 decks
15%synergy
No Mercy
17%inclusion1 decks6 decks
9%synergy
Unholy Annex // Ritual Chamber
17%inclusion1 decks6 decks
14%synergy
Black Market Connections
17%inclusion1 decks6 decks
-8%synergy
Oversold Cemetery
17%inclusion1 decks6 decks
11%synergy
Dark Prophecy
17%inclusion1 decks6 decks
13%synergy
Leyline of the Void
17%inclusion1 decks6 decks
15%synergy
Virtue of Persistence
17%inclusion1 decks6 decks
12%synergy
Necrogen Communion
17%inclusion1 decks6 decks
15%synergy
Planeswalkers
Vraska, Betrayal's Sting
50%inclusion3 decks6 decks
47%synergy
Liliana of the Dark Realms
33%inclusion2 decks6 decks
19%synergy
Utility Lands
Cabal Coffers
83%inclusion5 decks6 decks
29%synergy
Bojuka Bog
67%inclusion4 decks6 decks
20%synergy
Karn's Bastion
67%inclusion4 decks6 decks
63%synergy
Cabal Stronghold
50%inclusion3 decks6 decks
16%synergy
Urborg, Tomb of Yawgmoth
50%inclusion3 decks6 decks
12%synergy
War Room
33%inclusion2 decks6 decks
17%synergy
Nykthos, Shrine to Nyx
33%inclusion2 decks6 decks
4%synergy
Castle Locthwain
33%inclusion2 decks6 decks
17%synergy
Reliquary Tower
33%inclusion2 decks6 decks
3%synergy
Rogue's Passage
33%inclusion2 decks6 decks
14%synergy
Shizo, Death's Storehouse
17%inclusion1 decks6 decks
7%synergy
Westvale Abbey
17%inclusion1 decks6 decks
10%synergy
Phyrexian Tower
17%inclusion1 decks6 decks
-9%synergy
Mortuary Mire
17%inclusion1 decks6 decks
4%synergy
Memorial to Folly
17%inclusion1 decks6 decks
14%synergy
Barren Moor
17%inclusion1 decks6 decks
7%synergy
Urza's Tower
17%inclusion1 decks6 decks
16%synergy
Urza's Mine
17%inclusion1 decks6 decks
16%synergy
The Black Gate
17%inclusion1 decks6 decks
13%synergy
Witch's Cottage
17%inclusion1 decks6 decks
-8%synergy
Volrath's Stronghold
17%inclusion1 decks6 decks
13%synergy
Takenuma, Abandoned Mire
17%inclusion1 decks6 decks
1%synergy
Urza's Power Plant
17%inclusion1 decks6 decks
16%synergy
Access Tunnel
17%inclusion1 decks6 decks
14%synergy
Mana Artifacts
Glistening Sphere
67%inclusion4 decks6 decks
66%synergy
Sol Ring
67%inclusion4 decks6 decks
-19%synergy
Staff of Compleation
50%inclusion3 decks6 decks
48%synergy
Everflowing Chalice
17%inclusion1 decks6 decks
11%synergy
Commander's Sphere
17%inclusion1 decks6 decks
8%synergy
Arcane Signet
17%inclusion1 decks6 decks
-45%synergy
Astral Cornucopia
17%inclusion1 decks6 decks
16%synergy
Replicating Ring
17%inclusion1 decks6 decks
16%synergy
Patchwork Banner
17%inclusion1 decks6 decks
12%synergy
Throne of Eldraine
17%inclusion1 decks6 decks
7%synergy
Thought Vessel
17%inclusion1 decks6 decks
-9%synergy
Mind Stone
17%inclusion1 decks6 decks
-12%synergy
Sceptre of Eternal Glory
17%inclusion1 decks6 decks
9%synergy
Lands
Swamp
100%inclusion6 decks6 decks
5%synergy
Hagra Mauling
33%inclusion2 decks6 decks
29%synergy
Cavern of Souls
33%inclusion2 decks6 decks
27%synergy
Path of Ancestry
33%inclusion2 decks6 decks
28%synergy
Fell the Profane
17%inclusion1 decks6 decks
-3%synergy
Myriad Landscape
17%inclusion1 decks6 decks
-8%synergy
Agadeem's Awakening
17%inclusion1 decks6 decks
9%synergy
Malakir Rebirth
17%inclusion1 decks6 decks
-6%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