Karumonix, the Rat King (Commander) - Expensive Upgraded

Karumonix, the Rat King
Rank #384
28decks
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.
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Rat King, Verminister
21%inclusion3 decks14 decks
18%synergy
Shredder's Technique
11%inclusion1 decks9 decks
7%synergy
Rat King, Pale Piper
11%inclusion1 decks9 decks
7%synergy
High Synergy Cards
Marrow-Gnawer
89%inclusion25 decks28 decks
86%synergy
Ashcoat of the Shadow Swarm
82%inclusion23 decks28 decks
79%synergy
Piper of the Swarm
79%inclusion22 decks28 decks
72%synergy
Swarmyard
75%inclusion21 decks28 decks
69%synergy
Pack Rat
75%inclusion21 decks28 decks
69%synergy
Ogre Slumlord
75%inclusion21 decks28 decks
65%synergy
Ichor Rats
68%inclusion19 decks28 decks
65%synergy
Rat Colony
64%inclusion18 decks28 decks
59%synergy
Blightbelly Rat
61%inclusion17 decks28 decks
57%synergy
Lord Skitter, Sewer King
61%inclusion17 decks28 decks
52%synergy
Top Cards
Dark Ritual
82%inclusion23 decks28 decks
15%synergy
Jet Medallion
75%inclusion21 decks28 decks
13%synergy
Bontu's Monument
68%inclusion19 decks28 decks
40%synergy
Deadly Rollick
61%inclusion17 decks28 decks
36%synergy
Phyrexian Arena
57%inclusion16 decks28 decks
17%synergy
Thrumming Stone
54%inclusion15 decks28 decks
50%synergy
Skullclamp
54%inclusion15 decks28 decks
32%synergy
Herald's Horn
50%inclusion14 decks28 decks
44%synergy
Cover of Darkness
46%inclusion13 decks28 decks
44%synergy
Ratcatcher
46%inclusion13 decks28 decks
43%synergy
Game Changers
Demonic Tutor
71%inclusion20 decks28 decks
44%synergy
Vampiric Tutor
61%inclusion17 decks28 decks
40%synergy
Bolas's Citadel
36%inclusion10 decks28 decks
7%synergy
The One Ring
25%inclusion7 decks28 decks
16%synergy
Imperial Seal
21%inclusion6 decks28 decks
15%synergy
Ancient Tomb
7.1%inclusion2 decks28 decks
-4%synergy
Opposition Agent
7.1%inclusion2 decks28 decks
-2%synergy
Necropotence
7.1%inclusion2 decks28 decks
-8%synergy
Chrome Mox
7.1%inclusion2 decks28 decks
1%synergy
Creatures
Nashi, Moon Sage's Scion
43%inclusion12 decks28 decks
39%synergy
Crypt Rats
39%inclusion11 decks28 decks
35%synergy
Tangled Colony
39%inclusion11 decks28 decks
36%synergy
Ink-Eyes, Servant of Oni
36%inclusion10 decks28 decks
32%synergy
Crypt Ghast
36%inclusion10 decks28 decks
-12%synergy
Persistent Marshstalker
32%inclusion9 decks28 decks
29%synergy
Septic Rats
32%inclusion9 decks28 decks
30%synergy
Typhoid Rats
32%inclusion9 decks28 decks
28%synergy
Ayara, First of Locthwain
29%inclusion8 decks28 decks
3%synergy
Species Specialist
29%inclusion8 decks28 decks
25%synergy
Nezumi Prowler
29%inclusion8 decks28 decks
27%synergy
Wave of Rats
29%inclusion8 decks28 decks
27%synergy
Gnat Miser
29%inclusion8 decks28 decks
26%synergy
Relentless Rats
25%inclusion7 decks28 decks
23%synergy
Lord Skitter's Butcher
25%inclusion7 decks28 decks
22%synergy
Valley Rotcaller
25%inclusion7 decks28 decks
22%synergy
Rancid Rats
25%inclusion7 decks28 decks
22%synergy
Swarm of Rats
21%inclusion6 decks28 decks
19%synergy
Changeling Outcast
21%inclusion6 decks28 decks
16%synergy
Yawgmoth, Thran Physician
21%inclusion6 decks28 decks
11%synergy
Stronghold Rats
21%inclusion6 decks28 decks
18%synergy
Chittering Witch
21%inclusion6 decks28 decks
17%synergy
Nezumi Informant
21%inclusion6 decks28 decks
15%synergy
Gray Merchant of Asphodel
18%inclusion5 decks28 decks
-33%synergy
Throat Slitter
18%inclusion5 decks28 decks
16%synergy
Locust Miser
18%inclusion5 decks28 decks
16%synergy
Voracious Vermin
18%inclusion5 decks28 decks
15%synergy
Undercity Dire Rat
17%inclusion4 decks24 decks
15%synergy
Nezumi Graverobber
14%inclusion4 decks28 decks
13%synergy
Twisted Sewer-Witch
14%inclusion4 decks28 decks
13%synergy
Roaming Throne
14%inclusion4 decks28 decks
11%synergy
Pestilence Rats
14%inclusion4 decks28 decks
12%synergy
Nezumi Bone-Reader
14%inclusion4 decks28 decks
13%synergy
Engine Rat
11%inclusion3 decks27 decks
9%synergy
Carrion Rats
11%inclusion3 decks28 decks
10%synergy
Rotting Rats
11%inclusion3 decks28 decks
8%synergy
Burglar Rat
11%inclusion3 decks28 decks
0%synergy
Ruthless Radrat
11%inclusion3 decks28 decks
10%synergy
Adaptive Automaton
11%inclusion3 decks28 decks
10%synergy
Metallic Mimic
11%inclusion3 decks28 decks
10%synergy
Nezumi Cutthroat
11%inclusion3 decks28 decks
10%synergy
Nezumi Shortfang
11%inclusion3 decks28 decks
10%synergy
Old Flitterfang
11%inclusion3 decks28 decks
9%synergy
Okiba-Gang Shinobi
11%inclusion3 decks28 decks
10%synergy
Refurbished Familiar
7.1%inclusion2 decks28 decks
5%synergy
Midnight Scavengers
7.1%inclusion2 decks28 decks
7%synergy
Blood Artist
7.1%inclusion2 decks28 decks
-25%synergy
Filth
7.1%inclusion2 decks28 decks
5%synergy
Sinuous Vermin
7.1%inclusion2 decks28 decks
7%synergy
Chittering Skitterling
7.1%inclusion2 decks28 decks
6%synergy
Instants
Go for the Throat
36%inclusion10 decks28 decks
13%synergy
Vraska's Fall
32%inclusion9 decks28 decks
29%synergy
Culling the Weak
25%inclusion7 decks28 decks
9%synergy
Village Rites
21%inclusion6 decks28 decks
-4%synergy
Defile
21%inclusion6 decks28 decks
-15%synergy
Infernal Grasp
21%inclusion6 decks28 decks
-4%synergy
Withering Torment
19%inclusion5 decks27 decks
-13%synergy
Fell the Profane
18%inclusion5 decks28 decks
-1%synergy
Deadly Dispute
18%inclusion5 decks28 decks
-8%synergy
Cabal Ritual
18%inclusion5 decks28 decks
0%synergy
Imp's Mischief
14%inclusion4 decks28 decks
-10%synergy
Anoint with Affliction
14%inclusion4 decks28 decks
14%synergy
Tragic Slip
14%inclusion4 decks28 decks
-6%synergy
Tainted Strike
14%inclusion4 decks28 decks
11%synergy
Snuff Out
11%inclusion3 decks28 decks
-2%synergy
Corrupted Conviction
11%inclusion3 decks28 decks
-2%synergy
Dismember
11%inclusion3 decks28 decks
0%synergy
Baleful Mastery
11%inclusion3 decks28 decks
2%synergy
Sudden Spoiling
11%inclusion3 decks28 decks
2%synergy
Sheoldred's Edict
7.1%inclusion2 decks28 decks
-7%synergy
Whisper of the Dross
7.1%inclusion2 decks28 decks
4%synergy
Force of Despair
7.1%inclusion2 decks28 decks
-1%synergy
Rat Out
7.1%inclusion2 decks28 decks
6%synergy
Darkness
7.1%inclusion2 decks28 decks
-3%synergy
Malakir Rebirth
7.1%inclusion2 decks28 decks
-16%synergy
Sorceries
Diabolic Intent
43%inclusion12 decks28 decks
28%synergy
Patriarch's Bidding
43%inclusion12 decks28 decks
39%synergy
Toxic Deluge
43%inclusion12 decks28 decks
6%synergy
Kindred Dominance
43%inclusion12 decks28 decks
38%synergy
Phyresis Outbreak
36%inclusion10 decks28 decks
34%synergy
Feed the Swarm
36%inclusion10 decks28 decks
-15%synergy
Revenge of the Rats
33%inclusion9 decks27 decks
30%synergy
Infectious Inquiry
32%inclusion9 decks28 decks
29%synergy
Drown in Ichor
32%inclusion9 decks28 decks
28%synergy
Echoing Return
29%inclusion8 decks28 decks
25%synergy
Grim Tutor
29%inclusion8 decks28 decks
17%synergy
Bloodline Bidding
27%inclusion4 decks15 decks
22%synergy
Damnation
25%inclusion7 decks28 decks
4%synergy
Swarmyard Massacre
25%inclusion7 decks28 decks
23%synergy
Night's Whisper
18%inclusion5 decks28 decks
-7%synergy
Reanimate
18%inclusion5 decks28 decks
-22%synergy
Plague of Vermin
18%inclusion5 decks28 decks
15%synergy
Diabolic Tutor
14%inclusion4 decks28 decks
0%synergy
Bubbling Muck
14%inclusion4 decks28 decks
-1%synergy
Living Death
14%inclusion4 decks28 decks
4%synergy
Blasphemous Edict
11%inclusion3 decks27 decks
-5%synergy
Haunting Voyage
11%inclusion3 decks28 decks
10%synergy
Agadeem's Awakening
11%inclusion3 decks28 decks
3%synergy
Victimize
11%inclusion3 decks28 decks
-16%synergy
Exsanguinate
11%inclusion3 decks28 decks
-14%synergy
Torment of Hailfire
11%inclusion3 decks28 decks
-5%synergy
Scheming Symmetry
11%inclusion3 decks28 decks
6%synergy
Insatiable Avarice
11%inclusion3 decks28 decks
-1%synergy
Sign in Blood
11%inclusion3 decks28 decks
-25%synergy
Profane Tutor
7.1%inclusion2 decks28 decks
3%synergy
Mutilate
7.1%inclusion2 decks28 decks
-10%synergy
Thoughtseize
7.1%inclusion2 decks28 decks
2%synergy
Pact of the Serpent
7.1%inclusion2 decks28 decks
5%synergy
Geth's Summons
7.1%inclusion2 decks28 decks
7%synergy
Rise of the Dark Realms
7.1%inclusion2 decks28 decks
-6%synergy
Behold the Sinister Six!
5.3%inclusion1 decks19 decks
5%synergy
Utility Artifacts
Lightning Greaves
29%inclusion8 decks28 decks
-5%synergy
Vanquisher's Banner
25%inclusion7 decks28 decks
21%synergy
Sensei's Divining Top
21%inclusion6 decks28 decks
13%synergy
The Darkness Crystal
21%inclusion5 decks24 decks
1%synergy
Chronicle of Victory
20%inclusion3 decks15 decks
17%synergy
Coat of Arms
18%inclusion5 decks28 decks
15%synergy
Sword of Truth and Justice
18%inclusion5 decks28 decks
17%synergy
Phyrexian Altar
18%inclusion5 decks28 decks
4%synergy
Eldrazi Monument
18%inclusion5 decks28 decks
16%synergy
Ashnod's Altar
14%inclusion4 decks28 decks
-6%synergy
Swiftfoot Boots
14%inclusion4 decks28 decks
-17%synergy
Door of Destinies
14%inclusion4 decks28 decks
12%synergy
Banner of Kinship
11%inclusion3 decks27 decks
9%synergy
Contagion Clasp
11%inclusion3 decks28 decks
8%synergy
Expedition Map
11%inclusion3 decks28 decks
-1%synergy
Urza's Incubator
11%inclusion3 decks28 decks
9%synergy
Contagion Engine
11%inclusion3 decks28 decks
9%synergy
Whip of Erebos
11%inclusion3 decks28 decks
0%synergy
Whispersilk Cloak
11%inclusion3 decks28 decks
5%synergy
Mirror Box
7.1%inclusion2 decks28 decks
6%synergy
Wishclaw Talisman
7.1%inclusion2 decks28 decks
0%synergy
Helm of the Host
7.1%inclusion2 decks28 decks
6%synergy
Akroma's Memorial
7.1%inclusion2 decks28 decks
6%synergy
Thornbite Staff
7.1%inclusion2 decks28 decks
4%synergy
Obelisk of Urd
7.1%inclusion2 decks28 decks
6%synergy
Grafted Exoskeleton
7.1%inclusion2 decks28 decks
6%synergy
Recon Craft Theta
7.1%inclusion2 decks28 decks
7%synergy
Commander's Plate
7.1%inclusion2 decks28 decks
1%synergy
Gathering Stone
6.7%inclusion1 decks15 decks
5%synergy
Enchantments
Grave Pact
43%inclusion12 decks28 decks
23%synergy
Haunted One
32%inclusion9 decks28 decks
29%synergy
Black Market
25%inclusion7 decks28 decks
4%synergy
Black Market Connections
25%inclusion7 decks28 decks
1%synergy
Oversold Cemetery
21%inclusion6 decks28 decks
16%synergy
The Meathook Massacre
18%inclusion5 decks28 decks
1%synergy
Dictate of Erebos
14%inclusion4 decks28 decks
3%synergy
Necrogen Communion
11%inclusion3 decks28 decks
9%synergy
Exquisite Blood
7.1%inclusion2 decks28 decks
-6%synergy
Intimidation
7.1%inclusion2 decks28 decks
7%synergy
Oubliette
7.1%inclusion2 decks28 decks
4%synergy
Bastion of Remembrance
7.1%inclusion2 decks28 decks
-10%synergy
Dark Prophecy
7.1%inclusion2 decks28 decks
3%synergy
Phyrexian Reclamation
7.1%inclusion2 decks28 decks
-3%synergy
No Mercy
7.1%inclusion2 decks28 decks
0%synergy
Planeswalkers
Vraska, Betrayal's Sting
36%inclusion10 decks28 decks
33%synergy
Liliana of the Dark Realms
29%inclusion8 decks28 decks
15%synergy
Utility Lands
Cabal Coffers
89%inclusion25 decks28 decks
34%synergy
Urborg, Tomb of Yawgmoth
79%inclusion22 decks28 decks
41%synergy
Nykthos, Shrine to Nyx
57%inclusion16 decks28 decks
27%synergy
Cabal Stronghold
50%inclusion14 decks28 decks
15%synergy
Castle Locthwain
50%inclusion14 decks28 decks
33%synergy
Three Tree City
50%inclusion14 decks28 decks
45%synergy
Phyrexian Tower
46%inclusion13 decks28 decks
21%synergy
Bojuka Bog
39%inclusion11 decks28 decks
-8%synergy
Shizo, Death's Storehouse
32%inclusion9 decks28 decks
22%synergy
Mudflat Village
32%inclusion9 decks28 decks
29%synergy
Witch's Cottage
32%inclusion9 decks28 decks
8%synergy
War Room
32%inclusion9 decks28 decks
16%synergy
Karn's Bastion
32%inclusion9 decks28 decks
28%synergy
Reliquary Tower
32%inclusion9 decks28 decks
2%synergy
Rogue's Passage
29%inclusion8 decks28 decks
10%synergy
Secret Tunnel
24%inclusion4 decks17 decks
22%synergy
Mortuary Mire
21%inclusion6 decks28 decks
8%synergy
Crypt of Agadeem
21%inclusion6 decks28 decks
10%synergy
Takenuma, Abandoned Mire
21%inclusion6 decks28 decks
6%synergy
The Black Gate
18%inclusion5 decks28 decks
14%synergy
Vesuva
14%inclusion4 decks28 decks
11%synergy
Minas Morgul, Dark Fortress
14%inclusion4 decks28 decks
11%synergy
Urza's Saga
14%inclusion4 decks28 decks
6%synergy
Volrath's Stronghold
14%inclusion4 decks28 decks
11%synergy
Inkmoth Nexus
11%inclusion3 decks28 decks
10%synergy
Lake of the Dead
11%inclusion3 decks28 decks
6%synergy
Spymaster's Vault
11%inclusion3 decks28 decks
1%synergy
Buried Ruin
7.1%inclusion2 decks28 decks
2%synergy
Mutavault
7.1%inclusion2 decks28 decks
6%synergy
Deserted Temple
7.1%inclusion2 decks28 decks
3%synergy
Thespian's Stage
7.1%inclusion2 decks28 decks
2%synergy
Homeward Path
7.1%inclusion2 decks28 decks
5%synergy
Access Tunnel
7.1%inclusion2 decks28 decks
4%synergy
Mana Artifacts
Sol Ring
96%inclusion27 decks28 decks
11%synergy
Arcane Signet
57%inclusion16 decks28 decks
-5%synergy
Glistening Sphere
36%inclusion10 decks28 decks
35%synergy
Staff of Compleation
29%inclusion8 decks28 decks
27%synergy
The Soul Stone
29%inclusion6 decks21 decks
14%synergy
Throne of Eldraine
18%inclusion5 decks28 decks
8%synergy
Nyx Lotus
18%inclusion5 decks28 decks
12%synergy
Patchwork Banner
14%inclusion4 decks28 decks
10%synergy
Mind Stone
11%inclusion3 decks28 decks
-18%synergy
The Eternity Elevator
10%inclusion2 decks21 decks
9%synergy
Caged Sun
7.1%inclusion2 decks28 decks
-4%synergy
Charcoal Diamond
7.1%inclusion2 decks28 decks
-15%synergy
Gauntlet of Power
7.1%inclusion2 decks28 decks
4%synergy
Lotus Petal
7.1%inclusion2 decks28 decks
0%synergy
Fellwar Stone
7.1%inclusion2 decks28 decks
-7%synergy
Heraldic Banner
7.1%inclusion2 decks28 decks
2%synergy
Sceptre of Eternal Glory
7.1%inclusion2 decks28 decks
-1%synergy
Firdoch Core
6.7%inclusion1 decks15 decks
6%synergy
Lands
Swamp
96%inclusion27 decks28 decks
1%synergy
Cavern of Souls
64%inclusion18 decks28 decks
58%synergy
Path of Ancestry
36%inclusion10 decks28 decks
31%synergy
Fell the Profane
18%inclusion5 decks28 decks
-1%synergy
Myriad Landscape
14%inclusion4 decks28 decks
-11%synergy
Prismatic Vista
11%inclusion3 decks28 decks
8%synergy
Urza's Cave
11%inclusion3 decks28 decks
2%synergy
Agadeem's Awakening
11%inclusion3 decks28 decks
3%synergy
Fabled Passage
7.1%inclusion2 decks28 decks
5%synergy
Malakir Rebirth
7.1%inclusion2 decks28 decks
-16%synergy
Marsh Flats
7.1%inclusion2 decks28 decks
4%synergy
Polluted Delta
7.1%inclusion2 decks28 decks
4%synergy
Bloodstained Mire
7.1%inclusion2 decks28 decks
3%synergy
Abundant Countryside
6.7%inclusion1 decks15 decks
7%synergy
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