Karumonix, the Rat King (Commander) - Optimized

Karumonix, the Rat King
Rank #385
70decks
As CommanderAs CardAverage DeckDecks
Bracket
All12345
Budget
Any$$$$
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.
Deck Filters
Cardsphere
Archidekt
Commander Spellbook
Moxfield
Scryfall
MTGStocks
New Cards
High Synergy Cards
Top Cards
Game Changers
Creatures
Instants
Sorceries
Utility Artifacts
Enchantments
Planeswalkers
Utility Lands
Mana Artifacts
Lands
Back to Top
Rat King, Verminister
24%inclusion7 decks29 decks
21%synergy
Rat King, Pale Piper
14%inclusion3 decks21 decks
10%synergy
Big Apple, 3 a.m.
10%inclusion2 decks21 decks
7%synergy
Shredder's Technique
4.8%inclusion1 decks21 decks
1%synergy
Anchovy & Banana Pizza
4.8%inclusion1 decks21 decks
4%synergy
High Synergy Cards
Marrow-Gnawer
89%inclusion62 decks70 decks
85%synergy
Piper of the Swarm
86%inclusion60 decks70 decks
79%synergy
Pack Rat
80%inclusion56 decks70 decks
74%synergy
Blightbelly Rat
76%inclusion53 decks70 decks
72%synergy
Swarmyard
76%inclusion53 decks70 decks
70%synergy
Ichor Rats
71%inclusion50 decks70 decks
68%synergy
Ogre Slumlord
77%inclusion54 decks70 decks
67%synergy
Rat Colony
66%inclusion46 decks70 decks
60%synergy
Lord Skitter, Sewer King
64%inclusion45 decks70 decks
56%synergy
Infectious Inquiry
53%inclusion37 decks70 decks
50%synergy
Top Cards
Dark Ritual
79%inclusion55 decks70 decks
12%synergy
Jet Medallion
66%inclusion46 decks70 decks
4%synergy
Bontu's Monument
59%inclusion41 decks70 decks
30%synergy
Vraska's Fall
53%inclusion37 decks70 decks
49%synergy
Ratcatcher
51%inclusion36 decks70 decks
48%synergy
Crypt Rats
50%inclusion35 decks70 decks
45%synergy
Ashcoat of the Shadow Swarm
50%inclusion35 decks70 decks
47%synergy
Drown in Ichor
50%inclusion35 decks70 decks
46%synergy
Phyrexian Arena
50%inclusion35 decks70 decks
10%synergy
Tangled Colony
49%inclusion34 decks70 decks
45%synergy
Game Changers
Demonic Tutor
57%inclusion40 decks70 decks
30%synergy
Vampiric Tutor
46%inclusion32 decks70 decks
25%synergy
Bolas's Citadel
34%inclusion24 decks70 decks
6%synergy
Imperial Seal
21%inclusion15 decks70 decks
15%synergy
Ancient Tomb
19%inclusion13 decks70 decks
7%synergy
Necropotence
16%inclusion11 decks70 decks
1%synergy
Mana Vault
13%inclusion9 decks70 decks
6%synergy
Chrome Mox
11%inclusion8 decks70 decks
5%synergy
Opposition Agent
7.1%inclusion5 decks70 decks
-2%synergy
Ad Nauseam
7.1%inclusion5 decks70 decks
5%synergy
Creatures
Septic Rats
47%inclusion33 decks70 decks
45%synergy
Rancid Rats
47%inclusion33 decks70 decks
45%synergy
Typhoid Rats
44%inclusion31 decks70 decks
41%synergy
Gnat Miser
41%inclusion29 decks70 decks
39%synergy
Lord Skitter's Butcher
40%inclusion28 decks70 decks
37%synergy
Chittering Witch
33%inclusion23 decks70 decks
28%synergy
Stronghold Rats
33%inclusion23 decks70 decks
29%synergy
Burglar Rat
31%inclusion22 decks70 decks
20%synergy
Ayara, First of Locthwain
30%inclusion21 decks70 decks
4%synergy
Voracious Vermin
29%inclusion20 decks70 decks
26%synergy
Ink-Eyes, Servant of Oni
29%inclusion20 decks70 decks
25%synergy
Swarm of Rats
27%inclusion19 decks70 decks
25%synergy
Locust Miser
27%inclusion19 decks70 decks
26%synergy
Chittering Skitterling
24%inclusion17 decks70 decks
23%synergy
Ruin Rat
24%inclusion17 decks70 decks
23%synergy
Wave of Rats
23%inclusion16 decks70 decks
21%synergy
Nashi, Moon Sage's Scion
23%inclusion16 decks70 decks
19%synergy
Persistent Marshstalker
21%inclusion15 decks70 decks
18%synergy
Pestilence Rats
21%inclusion15 decks70 decks
19%synergy
Changeling Outcast
19%inclusion13 decks70 decks
13%synergy
Species Specialist
17%inclusion12 decks70 decks
14%synergy
Engine Rat
16%inclusion11 decks70 decks
14%synergy
Valley Rotcaller
16%inclusion11 decks70 decks
13%synergy
Relentless Rats
14%inclusion10 decks70 decks
13%synergy
Ravenous Rats
14%inclusion10 decks70 decks
13%synergy
Filth
14%inclusion10 decks70 decks
12%synergy
Twisted Sewer-Witch
14%inclusion10 decks70 decks
13%synergy
Throat Slitter
14%inclusion10 decks70 decks
12%synergy
Razortooth Rats
14%inclusion10 decks70 decks
14%synergy
Nezumi Informant
14%inclusion10 decks70 decks
8%synergy
Skullsnatcher
13%inclusion9 decks70 decks
12%synergy
Crypt Ghast
13%inclusion9 decks70 decks
-35%synergy
Drainpipe Vermin
13%inclusion9 decks70 decks
11%synergy
Old Flitterfang
13%inclusion9 decks70 decks
12%synergy
Nezumi Graverobber
11%inclusion8 decks70 decks
10%synergy
Gray Merchant of Asphodel
11%inclusion8 decks70 decks
-40%synergy
Yawgmoth, Thran Physician
11%inclusion8 decks70 decks
1%synergy
Nezumi Prowler
11%inclusion8 decks70 decks
10%synergy
Nezumi Cutthroat
11%inclusion8 decks70 decks
11%synergy
Nezumi Bone-Reader
11%inclusion8 decks70 decks
11%synergy
Blood Artist
10%inclusion7 decks70 decks
-22%synergy
Gnawing Vermin
10%inclusion7 decks70 decks
8%synergy
Zodiac Rat
10%inclusion7 decks70 decks
10%synergy
Undercity Dire Rat
9.1%inclusion5 decks55 decks
7%synergy
Ruthless Radrat
8.6%inclusion6 decks70 decks
8%synergy
Scrib Nibblers
7.1%inclusion5 decks70 decks
7%synergy
Adaptive Automaton
7.1%inclusion5 decks70 decks
6%synergy
Skithiryx, the Blight Dragon
7.1%inclusion5 decks70 decks
6%synergy
Plague Stinger
5.7%inclusion4 decks70 decks
5%synergy
Crashing Drawbridge
5.7%inclusion4 decks70 decks
3%synergy
Instants
Whisper of the Dross
39%inclusion27 decks70 decks
36%synergy
Village Rites
34%inclusion24 decks70 decks
9%synergy
Go for the Throat
30%inclusion21 decks70 decks
7%synergy
Defile
29%inclusion20 decks70 decks
-8%synergy
Deadly Rollick
26%inclusion18 decks70 decks
1%synergy
Tainted Strike
21%inclusion15 decks70 decks
18%synergy
Grim Affliction
20%inclusion14 decks70 decks
18%synergy
Deadly Dispute
20%inclusion14 decks70 decks
-6%synergy
Cabal Ritual
17%inclusion12 decks70 decks
-1%synergy
Culling the Weak
16%inclusion11 decks70 decks
0%synergy
Murder
16%inclusion11 decks70 decks
6%synergy
Tragic Slip
16%inclusion11 decks70 decks
-4%synergy
Rat Out
13%inclusion9 decks70 decks
11%synergy
Imp's Mischief
11%inclusion8 decks70 decks
-13%synergy
Infernal Grasp
11%inclusion8 decks70 decks
-14%synergy
Malakir Rebirth
11%inclusion8 decks70 decks
-11%synergy
Withering Torment
11%inclusion8 decks70 decks
-20%synergy
Consuming Corruption
10%inclusion7 decks70 decks
-6%synergy
Virulent Wound
10%inclusion7 decks70 decks
10%synergy
Entomb
8.6%inclusion6 decks70 decks
-3%synergy
Anoint with Affliction
8.6%inclusion6 decks70 decks
8%synergy
Corrupted Conviction
8.6%inclusion6 decks70 decks
-4%synergy
Withering Boon
8.6%inclusion6 decks70 decks
4%synergy
Sudden Spoiling
8.6%inclusion6 decks70 decks
0%synergy
Foul-Tongue Shriek
7.1%inclusion5 decks70 decks
5%synergy
Baleful Mastery
7.1%inclusion5 decks70 decks
-1%synergy
Fell the Profane
5.7%inclusion4 decks70 decks
-13%synergy
Doom Blade
5.7%inclusion4 decks70 decks
-2%synergy
Snuff Out
5.7%inclusion4 decks70 decks
-7%synergy
Sorceries
Phyresis Outbreak
46%inclusion32 decks70 decks
44%synergy
Feed the Swarm
31%inclusion22 decks70 decks
-19%synergy
Revenge of the Rats
27%inclusion19 decks70 decks
24%synergy
Diabolic Intent
26%inclusion18 decks70 decks
11%synergy
Toxic Deluge
24%inclusion17 decks70 decks
-12%synergy
Kindred Dominance
23%inclusion16 decks70 decks
18%synergy
Bloodline Bidding
22%inclusion7 decks32 decks
17%synergy
Sign in Blood
21%inclusion15 decks70 decks
-14%synergy
Patriarch's Bidding
20%inclusion14 decks70 decks
16%synergy
Reanimate
20%inclusion14 decks70 decks
-20%synergy
Vat Emergence
19%inclusion13 decks70 decks
17%synergy
Diabolic Tutor
17%inclusion12 decks70 decks
3%synergy
Damnation
17%inclusion12 decks70 decks
-3%synergy
Grim Tutor
17%inclusion12 decks70 decks
6%synergy
Night's Whisper
16%inclusion11 decks70 decks
-9%synergy
Plague of Vermin
16%inclusion11 decks70 decks
13%synergy
Spread the Sickness
14%inclusion10 decks70 decks
14%synergy
Swarmyard Massacre
14%inclusion10 decks70 decks
12%synergy
Read the Bones
13%inclusion9 decks70 decks
-4%synergy
Caress of Phyrexia
11%inclusion8 decks70 decks
11%synergy
Crippling Fear
11%inclusion8 decks70 decks
8%synergy
Torment of Hailfire
10%inclusion7 decks70 decks
-5%synergy
Echoing Return
10%inclusion7 decks70 decks
7%synergy
Gruesome Fate
10%inclusion7 decks70 decks
8%synergy
Victimize
8.6%inclusion6 decks70 decks
-18%synergy
Bubbling Muck
8.6%inclusion6 decks70 decks
-7%synergy
Feed the Infection
8.6%inclusion6 decks70 decks
8%synergy
Unearth
7.1%inclusion5 decks70 decks
-2%synergy
In Garruk's Wake
7.1%inclusion5 decks70 decks
3%synergy
Final Parting
7.1%inclusion5 decks70 decks
3%synergy
Geth's Summons
7.1%inclusion5 decks70 decks
7%synergy
Profane Tutor
5.7%inclusion4 decks70 decks
1%synergy
Scheming Symmetry
5.7%inclusion4 decks70 decks
1%synergy
Exsanguinate
5.7%inclusion4 decks70 decks
-19%synergy
Buried Alive
5.7%inclusion4 decks70 decks
-6%synergy
Mutilate
5.7%inclusion4 decks70 decks
-11%synergy
Living Death
5.7%inclusion4 decks70 decks
-4%synergy
Insatiable Avarice
5.7%inclusion4 decks70 decks
-6%synergy
Utility Artifacts
Herald's Horn
47%inclusion33 decks70 decks
41%synergy
Skullclamp
33%inclusion23 decks70 decks
11%synergy
Thrumming Stone
33%inclusion23 decks70 decks
29%synergy
Lightning Greaves
31%inclusion22 decks70 decks
-2%synergy
Thornbite Staff
31%inclusion22 decks70 decks
29%synergy
Vanquisher's Banner
30%inclusion21 decks70 decks
26%synergy
Contagion Engine
27%inclusion19 decks70 decks
25%synergy
Swiftfoot Boots
27%inclusion19 decks70 decks
-4%synergy
Chronicle of Victory
25%inclusion8 decks32 decks
22%synergy
Contagion Clasp
23%inclusion16 decks70 decks
21%synergy
Coat of Arms
23%inclusion16 decks70 decks
20%synergy
Door of Destinies
21%inclusion15 decks70 decks
19%synergy
Ashnod's Altar
14%inclusion10 decks70 decks
-5%synergy
Whip of Erebos
11%inclusion8 decks70 decks
1%synergy
Eldrazi Monument
11%inclusion8 decks70 decks
10%synergy
Sensei's Divining Top
10%inclusion7 decks70 decks
2%synergy
Banner of Kinship
10%inclusion7 decks70 decks
8%synergy
Grafted Exoskeleton
8.6%inclusion6 decks70 decks
7%synergy
Akroma's Memorial
7.1%inclusion5 decks70 decks
6%synergy
Aetherflux Reservoir
7.1%inclusion5 decks70 decks
-2%synergy
The Darkness Crystal
7.1%inclusion4 decks56 decks
-13%synergy
Wayfarer's Bauble
5.7%inclusion4 decks70 decks
-10%synergy
Sword of Truth and Justice
5.7%inclusion4 decks70 decks
5%synergy
Prosthetic Injector
5.7%inclusion4 decks70 decks
5%synergy
Wishclaw Talisman
5.7%inclusion4 decks70 decks
-1%synergy
Urza's Incubator
5.7%inclusion4 decks70 decks
4%synergy
Enchantments
Cover of Darkness
39%inclusion27 decks70 decks
36%synergy
Grave Pact
31%inclusion22 decks70 decks
12%synergy
Necrogen Communion
30%inclusion21 decks70 decks
28%synergy
Contamination
26%inclusion18 decks70 decks
22%synergy
Black Market
21%inclusion15 decks70 decks
0%synergy
Oversold Cemetery
21%inclusion15 decks70 decks
16%synergy
Phyresis
20%inclusion14 decks70 decks
18%synergy
Black Market Connections
20%inclusion14 decks70 decks
-4%synergy
Bad Moon
17%inclusion12 decks70 decks
14%synergy
The Meathook Massacre
16%inclusion11 decks70 decks
-2%synergy
Haunted One
14%inclusion10 decks70 decks
12%synergy
Dictate of Erebos
10%inclusion7 decks70 decks
-1%synergy
Animate Dead
10%inclusion7 decks70 decks
-7%synergy
Greed
8.6%inclusion6 decks70 decks
2%synergy
Vampiric Rites
8.6%inclusion6 decks70 decks
3%synergy
Exquisite Blood
8.6%inclusion6 decks70 decks
-5%synergy
Lord Skitter's Blessing
8.6%inclusion6 decks70 decks
8%synergy
Sanguine Bond
8.6%inclusion6 decks70 decks
-3%synergy
No Mercy
7.1%inclusion5 decks70 decks
0%synergy
Painful Quandary
5.7%inclusion4 decks70 decks
-4%synergy
Tribute to Horobi
5.7%inclusion4 decks70 decks
5%synergy
Planeswalkers
Vraska, Betrayal's Sting
39%inclusion27 decks70 decks
36%synergy
Liliana of the Dark Realms
17%inclusion12 decks70 decks
3%synergy
Utility Lands
Cabal Coffers
71%inclusion50 decks70 decks
17%synergy
Bojuka Bog
64%inclusion45 decks70 decks
17%synergy
Urborg, Tomb of Yawgmoth
47%inclusion33 decks70 decks
10%synergy
Karn's Bastion
41%inclusion29 decks70 decks
37%synergy
Mudflat Village
34%inclusion24 decks70 decks
32%synergy
Cabal Stronghold
33%inclusion23 decks70 decks
-2%synergy
Mortuary Mire
26%inclusion18 decks70 decks
13%synergy
Phyrexian Tower
26%inclusion18 decks70 decks
1%synergy
Witch's Cottage
26%inclusion18 decks70 decks
1%synergy
Reliquary Tower
24%inclusion17 decks70 decks
-6%synergy
Rogue's Passage
24%inclusion17 decks70 decks
5%synergy
Nykthos, Shrine to Nyx
23%inclusion16 decks70 decks
-7%synergy
Three Tree City
20%inclusion14 decks70 decks
15%synergy
Castle Locthwain
14%inclusion10 decks70 decks
-3%synergy
Volrath's Stronghold
13%inclusion9 decks70 decks
9%synergy
Crypt of Agadeem
11%inclusion8 decks70 decks
0%synergy
Shizo, Death's Storehouse
10%inclusion7 decks70 decks
0%synergy
Takenuma, Abandoned Mire
10%inclusion7 decks70 decks
-6%synergy
War Room
8.6%inclusion6 decks70 decks
-8%synergy
Secret Tunnel
7.9%inclusion3 decks38 decks
7%synergy
Inkmoth Nexus
7.1%inclusion5 decks70 decks
6%synergy
Memorial to Folly
5.7%inclusion4 decks70 decks
3%synergy
Buried Ruin
5.7%inclusion4 decks70 decks
1%synergy
Temple of the False God
5.7%inclusion4 decks70 decks
-2%synergy
Access Tunnel
5.7%inclusion4 decks70 decks
3%synergy
Mana Artifacts
Sol Ring
89%inclusion62 decks70 decks
3%synergy
Arcane Signet
40%inclusion28 decks70 decks
-22%synergy
Glistening Sphere
31%inclusion22 decks70 decks
30%synergy
Staff of Compleation
24%inclusion17 decks70 decks
23%synergy
Patchwork Banner
16%inclusion11 decks70 decks
11%synergy
Mind Stone
13%inclusion9 decks70 decks
-16%synergy
Thought Vessel
11%inclusion8 decks70 decks
-14%synergy
Caged Sun
8.6%inclusion6 decks70 decks
-3%synergy
Everflowing Chalice
7.1%inclusion5 decks70 decks
1%synergy
The Soul Stone
6.5%inclusion3 decks46 decks
-8%synergy
Charcoal Diamond
5.7%inclusion4 decks70 decks
-17%synergy
Lotus Petal
5.7%inclusion4 decks70 decks
-2%synergy
Heraldic Banner
5.7%inclusion4 decks70 decks
0%synergy
Throne of Eldraine
5.7%inclusion4 decks70 decks
-4%synergy
Mox Diamond
5.7%inclusion4 decks70 decks
2%synergy
Lands
Swamp
94%inclusion66 decks70 decks
-1%synergy
Cavern of Souls
26%inclusion18 decks70 decks
19%synergy
Path of Ancestry
19%inclusion13 decks70 decks
13%synergy
Myriad Landscape
16%inclusion11 decks70 decks
-10%synergy
Command Tower
11%inclusion8 decks70 decks
6%synergy
Malakir Rebirth
11%inclusion8 decks70 decks
-11%synergy
Fell the Profane
5.7%inclusion4 decks70 decks
-13%synergy
Evolving Wilds
5.7%inclusion4 decks70 decks
2%synergy
Snow-Covered Swamp
5.7%inclusion4 decks70 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