Karumonix, the Rat King (Commander) - Budget 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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Enchantments
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Utility Lands
Mana Artifacts
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Rat King, Pale Piper
29%inclusion2 decks7 decks
24%synergy
Rat King, Verminister
29%inclusion2 decks7 decks
26%synergy
Big Apple, 3 a.m.
14%inclusion1 decks7 decks
12%synergy
Tunnel Rats
14%inclusion1 decks7 decks
14%synergy
Splinter, Hamato Yoshi
14%inclusion1 decks7 decks
14%synergy
High Synergy Cards
Blightbelly Rat
93%inclusion26 decks28 decks
89%synergy
Typhoid Rats
93%inclusion26 decks28 decks
89%synergy
Ichor Rats
86%inclusion24 decks28 decks
83%synergy
Infectious Inquiry
82%inclusion23 decks28 decks
79%synergy
Ogre Slumlord
89%inclusion25 decks28 decks
79%synergy
Rancid Rats
79%inclusion22 decks28 decks
76%synergy
Lord Skitter's Butcher
79%inclusion22 decks28 decks
75%synergy
Vraska's Fall
79%inclusion22 decks28 decks
75%synergy
Voracious Vermin
75%inclusion21 decks28 decks
72%synergy
Tangled Colony
75%inclusion21 decks28 decks
72%synergy
Top Cards
Piper of the Swarm
79%inclusion22 decks28 decks
72%synergy
Lord Skitter, Sewer King
79%inclusion22 decks28 decks
70%synergy
Drown in Ichor
75%inclusion21 decks28 decks
71%synergy
Pack Rat
71%inclusion20 decks28 decks
65%synergy
Septic Rats
71%inclusion20 decks28 decks
70%synergy
Marrow-Gnawer
68%inclusion19 decks28 decks
65%synergy
Crypt Rats
64%inclusion18 decks28 decks
60%synergy
Whisper of the Dross
61%inclusion17 decks28 decks
58%synergy
Revenge of the Rats
61%inclusion17 decks28 decks
58%synergy
Burglar Rat
61%inclusion17 decks28 decks
50%synergy
Game Changers
Bolas's Citadel
21%inclusion6 decks28 decks
-7%synergy
Creatures
Persistent Marshstalker
61%inclusion17 decks28 decks
58%synergy
Chittering Skitterling
61%inclusion17 decks28 decks
60%synergy
Gnat Miser
54%inclusion15 decks28 decks
51%synergy
Undercity Dire Rat
52%inclusion11 decks21 decks
51%synergy
Stronghold Rats
50%inclusion14 decks28 decks
46%synergy
Pestilence Rats
46%inclusion13 decks28 decks
44%synergy
Ruin Rat
46%inclusion13 decks28 decks
45%synergy
Chittering Witch
46%inclusion13 decks28 decks
42%synergy
Ravenous Rats
43%inclusion12 decks28 decks
41%synergy
Swarm of Rats
43%inclusion12 decks28 decks
40%synergy
Changeling Outcast
43%inclusion12 decks28 decks
38%synergy
Twisted Sewer-Witch
43%inclusion12 decks28 decks
41%synergy
Gnawing Vermin
39%inclusion11 decks28 decks
38%synergy
Nezumi Cutthroat
39%inclusion11 decks28 decks
39%synergy
Razortooth Rats
39%inclusion11 decks28 decks
39%synergy
Nezumi Prowler
36%inclusion10 decks28 decks
34%synergy
Drainpipe Vermin
36%inclusion10 decks28 decks
34%synergy
Engine Rat
32%inclusion9 decks28 decks
30%synergy
Wave of Rats
32%inclusion9 decks28 decks
30%synergy
Refurbished Familiar
29%inclusion8 decks28 decks
26%synergy
Nezumi Informant
29%inclusion8 decks28 decks
22%synergy
Ratcatcher
29%inclusion8 decks28 decks
25%synergy
Rotting Rats
25%inclusion7 decks28 decks
22%synergy
Ayara, First of Locthwain
25%inclusion7 decks28 decks
-1%synergy
Gray Merchant of Asphodel
25%inclusion7 decks28 decks
-26%synergy
Ink-Eyes, Servant of Oni
25%inclusion7 decks28 decks
22%synergy
Bog Rats
21%inclusion6 decks28 decks
21%synergy
Chittering Rats
21%inclusion6 decks28 decks
21%synergy
Innocuous Rat
21%inclusion6 decks28 decks
20%synergy
Nezumi Graverobber
21%inclusion6 decks28 decks
20%synergy
Valley Rotcaller
21%inclusion6 decks28 decks
19%synergy
Nezumi Bladeblesser
21%inclusion6 decks28 decks
21%synergy
Rat Colony
21%inclusion6 decks28 decks
16%synergy
Adaptive Automaton
18%inclusion5 decks28 decks
17%synergy
Throat Slitter
18%inclusion5 decks28 decks
16%synergy
Sinuous Vermin
18%inclusion5 decks28 decks
17%synergy
Mukotai Ambusher
18%inclusion5 decks28 decks
17%synergy
Nashi, Moon Sage's Scion
18%inclusion5 decks28 decks
14%synergy
Old Flitterfang
18%inclusion5 decks28 decks
17%synergy
Relentless Rats
14%inclusion4 decks28 decks
13%synergy
Thornplate Intimidator
14%inclusion4 decks28 decks
13%synergy
Bloodline Pretender
14%inclusion4 decks28 decks
14%synergy
Graveshifter
14%inclusion4 decks28 decks
13%synergy
Sewer Rats
14%inclusion4 decks28 decks
14%synergy
Daggerfang Duo
14%inclusion4 decks28 decks
14%synergy
Gulping Scraptrap
14%inclusion4 decks28 decks
14%synergy
Elephant-Rat
11%inclusion2 decks18 decks
11%synergy
Changeling Wayfinder
11%inclusion1 decks9 decks
11%synergy
Plague Stinger
11%inclusion3 decks28 decks
10%synergy
Ruthless Radrat
11%inclusion3 decks28 decks
10%synergy
Instants
Dark Ritual
50%inclusion14 decks28 decks
-17%synergy
Grim Affliction
50%inclusion14 decks28 decks
48%synergy
Village Rites
46%inclusion13 decks28 decks
21%synergy
Deadly Dispute
43%inclusion12 decks28 decks
17%synergy
Rat Out
39%inclusion11 decks28 decks
38%synergy
Murder
39%inclusion11 decks28 decks
29%synergy
Hero's Downfall
32%inclusion9 decks28 decks
25%synergy
Go for the Throat
32%inclusion9 decks28 decks
9%synergy
Corrupted Conviction
29%inclusion8 decks28 decks
16%synergy
Anoint with Affliction
25%inclusion7 decks28 decks
24%synergy
Raise the Draugr
25%inclusion7 decks28 decks
24%synergy
Consuming Corruption
21%inclusion6 decks28 decks
6%synergy
Drag to the Underworld
21%inclusion6 decks28 decks
20%synergy
Virulent Wound
21%inclusion6 decks28 decks
21%synergy
Infernal Grasp
21%inclusion6 decks28 decks
-4%synergy
Altar's Reap
18%inclusion5 decks28 decks
15%synergy
Defile
18%inclusion5 decks28 decks
-19%synergy
Not Dead After All
14%inclusion4 decks28 decks
3%synergy
Tragic Slip
14%inclusion4 decks28 decks
-6%synergy
Tainted Strike
14%inclusion4 decks28 decks
11%synergy
Fake Your Own Death
14%inclusion4 decks28 decks
7%synergy
Doom Blade
11%inclusion3 decks28 decks
3%synergy
Foul-Tongue Shriek
11%inclusion3 decks28 decks
9%synergy
Gravepurge
11%inclusion3 decks28 decks
9%synergy
Breathe Your Last
11%inclusion3 decks28 decks
9%synergy
Hazel's Nocturne
7.1%inclusion2 decks28 decks
6%synergy
Imp's Mischief
7.1%inclusion2 decks28 decks
-18%synergy
Undying Malice
7.1%inclusion2 decks28 decks
-3%synergy
Consumed by Greed
7.1%inclusion2 decks28 decks
6%synergy
Nasty End
7.1%inclusion2 decks28 decks
4%synergy
Withering Torment
7.1%inclusion2 decks28 decks
-24%synergy
Archenemy's Charm
5.6%inclusion1 decks18 decks
-3%synergy
Scorpion's Sting
5.6%inclusion1 decks18 decks
5%synergy
Sorceries
Spread the Sickness
46%inclusion13 decks28 decks
46%synergy
Diabolic Tutor
43%inclusion12 decks28 decks
28%synergy
Feed the Swarm
43%inclusion12 decks28 decks
-8%synergy
Sign in Blood
43%inclusion12 decks28 decks
7%synergy
Vat Emergence
39%inclusion11 decks28 decks
38%synergy
Crippling Fear
39%inclusion11 decks28 decks
36%synergy
Read the Bones
32%inclusion9 decks28 decks
15%synergy
Victimize
32%inclusion9 decks28 decks
5%synergy
Night's Whisper
29%inclusion8 decks28 decks
4%synergy
Feed the Infection
25%inclusion7 decks28 decks
24%synergy
Unearth
25%inclusion7 decks28 decks
16%synergy
Return from Extinction
18%inclusion5 decks28 decks
17%synergy
Predators' Hour
18%inclusion5 decks28 decks
17%synergy
Mutilate
18%inclusion5 decks28 decks
1%synergy
Caress of Phyrexia
18%inclusion5 decks28 decks
17%synergy
Geth's Summons
18%inclusion5 decks28 decks
17%synergy
Phyresis Outbreak
14%inclusion4 decks28 decks
13%synergy
Lab Rats
14%inclusion4 decks28 decks
14%synergy
Swarmyard Massacre
14%inclusion4 decks28 decks
12%synergy
Decree of Pain
14%inclusion4 decks28 decks
9%synergy
Bloodline Bidding
11%inclusion1 decks9 decks
6%synergy
Patriarch's Bidding
11%inclusion3 decks28 decks
6%synergy
Forever Young
11%inclusion3 decks28 decks
9%synergy
Profane Command
11%inclusion3 decks28 decks
9%synergy
Kindred Dominance
11%inclusion3 decks28 decks
6%synergy
Syphon Mind
11%inclusion3 decks28 decks
-2%synergy
Eaten Alive
11%inclusion3 decks28 decks
7%synergy
Strategic Betrayal
7.4%inclusion2 decks27 decks
7%synergy
Command the Dreadhorde
7.1%inclusion2 decks28 decks
6%synergy
Profane Tutor
7.1%inclusion2 decks28 decks
3%synergy
Bone Splinters
7.1%inclusion2 decks28 decks
5%synergy
Ancient Craving
7.1%inclusion2 decks28 decks
5%synergy
Exsanguinate
7.1%inclusion2 decks28 decks
-17%synergy
In Garruk's Wake
7.1%inclusion2 decks28 decks
3%synergy
Annihilating Glare
7.1%inclusion2 decks28 decks
6%synergy
Gruesome Fate
7.1%inclusion2 decks28 decks
5%synergy
March of the Returned
7.1%inclusion2 decks28 decks
7%synergy
Ambition's Cost
7.1%inclusion2 decks28 decks
4%synergy
Fell
7.1%inclusion2 decks28 decks
4%synergy
Embrace Oblivion
5.6%inclusion1 decks18 decks
5%synergy
Utility Artifacts
Bontu's Monument
50%inclusion14 decks28 decks
22%synergy
Contagion Clasp
43%inclusion12 decks28 decks
41%synergy
Herald's Horn
43%inclusion12 decks28 decks
37%synergy
Icon of Ancestry
36%inclusion10 decks28 decks
35%synergy
Vanquisher's Banner
25%inclusion7 decks28 decks
21%synergy
Swiftfoot Boots
25%inclusion7 decks28 decks
-6%synergy
Wayfarer's Bauble
21%inclusion6 decks28 decks
6%synergy
Jet Medallion
21%inclusion6 decks28 decks
-40%synergy
Hall of Triumph
14%inclusion4 decks28 decks
14%synergy
Thieves' Tools
14%inclusion4 decks28 decks
13%synergy
Grafted Exoskeleton
14%inclusion4 decks28 decks
13%synergy
Vat of Rebirth
11%inclusion3 decks28 decks
7%synergy
Skullclamp
11%inclusion3 decks28 decks
-11%synergy
Prosthetic Injector
11%inclusion3 decks28 decks
10%synergy
Door of Destinies
11%inclusion3 decks28 decks
9%synergy
Ashnod's Altar
7.1%inclusion2 decks28 decks
-13%synergy
Heirloom Blade
7.1%inclusion2 decks28 decks
7%synergy
Horn of the Mark
7.1%inclusion2 decks28 decks
7%synergy
Thornbite Staff
7.1%inclusion2 decks28 decks
4%synergy
Pyre of Heroes
7.1%inclusion2 decks28 decks
7%synergy
Recon Craft Theta
7.1%inclusion2 decks28 decks
7%synergy
Nutrient Block
5.6%inclusion1 decks18 decks
5%synergy
Enchantments
Necrogen Communion
46%inclusion13 decks28 decks
45%synergy
Phyresis
36%inclusion10 decks28 decks
34%synergy
Phyrexian Arena
25%inclusion7 decks28 decks
-15%synergy
Tribute to Horobi
21%inclusion6 decks28 decks
20%synergy
Bad Moon
21%inclusion6 decks28 decks
18%synergy
Cover of Darkness
18%inclusion5 decks28 decks
15%synergy
Vampiric Rites
14%inclusion4 decks28 decks
8%synergy
Black Market
14%inclusion4 decks28 decks
-7%synergy
Lord Skitter's Blessing
14%inclusion4 decks28 decks
14%synergy
Oversold Cemetery
14%inclusion4 decks28 decks
9%synergy
Haunted One
11%inclusion3 decks28 decks
8%synergy
Relic Putrescence
11%inclusion3 decks28 decks
10%synergy
Intimidation
11%inclusion3 decks28 decks
10%synergy
Bastion of Remembrance
11%inclusion3 decks28 decks
-6%synergy
Greed
7.1%inclusion2 decks28 decks
0%synergy
Glistening Oil
7.1%inclusion2 decks28 decks
6%synergy
Okiba Reckoner Raid
7.1%inclusion2 decks28 decks
7%synergy
Phyrexian Reclamation
7.1%inclusion2 decks28 decks
-3%synergy
Chthonian Nightmare
7.1%inclusion2 decks28 decks
4%synergy
Sothera, the Supervoid
5.6%inclusion1 decks18 decks
3%synergy
Planeswalkers
Vraska, Betrayal's Sting
14%inclusion4 decks28 decks
12%synergy
Liliana of the Dark Realms
11%inclusion3 decks28 decks
-3%synergy
Ob Nixilis Reignited
7.1%inclusion2 decks28 decks
5%synergy
Utility Lands
Mudflat Village
46%inclusion13 decks28 decks
44%synergy
Karn's Bastion
46%inclusion13 decks28 decks
42%synergy
Rogue's Passage
46%inclusion13 decks28 decks
27%synergy
Mortuary Mire
39%inclusion11 decks28 decks
26%synergy
Bojuka Bog
32%inclusion9 decks28 decks
-15%synergy
Barren Moor
25%inclusion7 decks28 decks
15%synergy
Witch's Cottage
21%inclusion6 decks28 decks
-3%synergy
Swarmyard
18%inclusion5 decks28 decks
12%synergy
Memorial to Folly
18%inclusion5 decks28 decks
15%synergy
Access Tunnel
18%inclusion5 decks28 decks
15%synergy
Temple of the False God
14%inclusion4 decks28 decks
6%synergy
Subterranean Hangar
7.1%inclusion2 decks28 decks
7%synergy
Haunted Fengraf
7.1%inclusion2 decks28 decks
7%synergy
Reliquary Tower
7.1%inclusion2 decks28 decks
-23%synergy
Mana Artifacts
Sol Ring
75%inclusion21 decks28 decks
-11%synergy
Arcane Signet
50%inclusion14 decks28 decks
-12%synergy
Charcoal Diamond
43%inclusion12 decks28 decks
20%synergy
Heraldic Banner
43%inclusion12 decks28 decks
37%synergy
Mind Stone
39%inclusion11 decks28 decks
10%synergy
Patchwork Banner
18%inclusion5 decks28 decks
13%synergy
Phyrexian Atlas
18%inclusion5 decks28 decks
18%synergy
Commander's Sphere
14%inclusion4 decks28 decks
6%synergy
Worn Powerstone
14%inclusion4 decks28 decks
10%synergy
Thought Vessel
11%inclusion3 decks28 decks
-15%synergy
Caged Sun
7.1%inclusion2 decks28 decks
-4%synergy
Staff of Compleation
7.1%inclusion2 decks28 decks
5%synergy
Hedron Archive
7.1%inclusion2 decks28 decks
4%synergy
The Soul Stone
5.6%inclusion1 decks18 decks
-9%synergy
All-Fates Scroll
5.6%inclusion1 decks18 decks
5%synergy
Lands
Swamp
100%inclusion28 decks28 decks
5%synergy
Path of Ancestry
36%inclusion10 decks28 decks
31%synergy
Myriad Landscape
21%inclusion6 decks28 decks
-4%synergy
Command Tower
14%inclusion4 decks28 decks
9%synergy
Daily Bugle Building
13%inclusion2 decks16 decks
12%synergy
Terramorphic Expanse
11%inclusion3 decks28 decks
8%synergy
Ash Barrens
7.1%inclusion2 decks28 decks
6%synergy
Evolving Wilds
7.1%inclusion2 decks28 decks
3%synergy
Mirrex
7.1%inclusion2 decks28 decks
7%synergy
Demolition Field
7.1%inclusion2 decks28 decks
2%synergy
Vibrant Cityscape
6.3%inclusion1 decks16 decks
6%synergy
Command Bridge
5.6%inclusion1 decks18 decks
5%synergy
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