Karumonix, the Rat King commander decks

{B}Mono-Black commanders

We track 546 decks led by Karumonix, the Rat King.

Deck numbers as of October 5, 2026 · refreshed weekly

Search all Karumonix, the Rat King decks
The card$0.63+8.6% in 30 daysas of Oct 5Price history for Karumonix, the Rat King
Decks led
546

0.07% of the 787,845 legal decks we track.

Median deck price
$288

Most cost $85 to $800.

Median power
5.1

Most rate 4.2 to 6.8 on the 1 to 10 EDH power level scale.

Median salt
4.1

Most score 3.0 to 5.2 out of 10.

Most often built as kindred (77%), then stompy (11%).

Real Karumonix, the Rat King decks

Real decks from our database, picked from this commander's own price range and from every bracket people build it in. Open any of them for the full list. The picks rotate weekly.

By budget

By bracket

Karumonix, the Rat King decks by price and bracket

Deck prices

$0 to $50: 26 decks.
$50 to $100: 41 decks.
$100 to $150: 64 decks.
$150 to $200: 48 decks.
$200 to $300: 98 decks.
$300 to $400: 57 decks.
$400 to $500: 62 decks.
$500 to $750: 87 decks.
$750 to $1,000: 48 decks.
$1,000 to $1,500: 6 decks.
$1,500 to $2,000: 1 decks.
$2,000 to $3,000: 6 decks.
$3,000 and up: 2 decks.

Decks per price band. The highlighted band, $200 to $300, holds the median deck at $288. 236 of these decks cost $250 or less.

WotC brackets

  • Bracket 1 (Exhibition)39% · 211
  • Bracket 2 (Core)16% · 85
  • Bracket 3 (Upgraded)34% · 184
  • Bracket 4 (Optimized)12% · 66
  • Bracket 5 (cEDH)0% · 0

Search Karumonix, the Rat King decks by budget and bracket

The deck search narrows every Karumonix, the Rat King deck we track by price, power, bracket and salt.

Search all Karumonix, the Rat King decks
Under $100 (67) Under $250 (236) Bracket 1 builds (211)

What Karumonix, the Rat King decks play

The 40 cards found most often across these 546 decks, with each card's current price. The bar is the share of decks running the card, and its green part is how far that share runs above the card's rate in every deck that could play it.

Creatures20

  • Piper of the Swarm81%$0.57
    Run in 443 of these decks (81%), 1% of decks that could run it.
  • Blightbelly Rat78%$0.20
    Run in 425 of these decks (78%), 1% of decks that could run it.
  • Marrow-Gnawer78%$23.30
    Run in 423 of these decks (78%), 1% of decks that could run it.
  • Ogre Slumlord77%$0.30
    Run in 421 of these decks (77%), 1% of decks that could run it.
  • Lord Skitter, Sewer King73%$4.55
    Run in 401 of these decks (73%), 1% of decks that could run it.
  • Pack Rat73%$2.55
    Run in 397 of these decks (73%), 1% of decks that could run it.
14 more creatures
  • Ichor Rats68%$2.83
    Run in 369 of these decks (68%), 1% of decks that could run it.
  • Rat Colony60%$4.75
    Run in 327 of these decks (60%), 1% of decks that could run it.
  • Crypt Rats53%$0.61
    Run in 290 of these decks (53%), 1% of decks that could run it.
  • Typhoid Rats53%$0.21
    Run in 289 of these decks (53%), under 1% of decks that could run it.
  • Septic Rats50%$0.50
    Run in 274 of these decks (50%), under 1% of decks that could run it.
  • Lord Skitter's Butcher49%$0.35
    Run in 265 of these decks (49%), 1% of decks that could run it.
  • Rancid Rats48%$0.25
    Run in 261 of these decks (48%), under 1% of decks that could run it.
  • Tangled Colony47%$0.88
    Run in 257 of these decks (47%), under 1% of decks that could run it.
  • Voracious Vermin46%$0.35
    Run in 250 of these decks (46%), under 1% of decks that could run it.
  • Burglar Rat44%$0.20
    Run in 241 of these decks (44%), 1% of decks that could run it.
  • Ashcoat of the Shadow Swarm42%$3.25
    Run in 231 of these decks (42%), 1% of decks that could run it.
  • Persistent Marshstalker42%$0.30
    Run in 229 of these decks (42%), under 1% of decks that could run it.
  • Gnat Miser40%$0.92
    Run in 220 of these decks (40%), under 1% of decks that could run it.
  • Ratcatcher38%$9.28
    Run in 208 of these decks (38%), under 1% of decks that could run it.

Instants3

  • Dark Ritual61%$4.44
    Run in 332 of these decks (61%), 34% of decks that could run it.
  • Vraska's Fall54%$0.30
    Run in 297 of these decks (54%), 2% of decks that could run it.
  • Whisper of the Dross43%$0.34
    Run in 236 of these decks (43%), 1% of decks that could run it.

Sorceries4

  • Infectious Inquiry58%$0.40
    Run in 319 of these decks (58%), 1% of decks that could run it.
  • Drown in Ichor48%$0.82
    Run in 263 of these decks (48%), 1% of decks that could run it.
  • Feed the Swarm43%$0.19
    Run in 233 of these decks (43%), 17% of decks that could run it.
  • Phyresis Outbreak37%$12.35
    Run in 202 of these decks (37%), 1% of decks that could run it.

Artifacts6

  • Sol Ring79%$1.00
    Run in 432 of these decks (79%), 86% of decks that could run it.
  • Jet Medallion56%$12.40
    Run in 307 of these decks (56%), 17% of decks that could run it.
  • Arcane Signet50%$0.37
    Run in 271 of these decks (50%), 56% of decks that could run it.
  • Bontu's Monument49%$1.59
    Run in 265 of these decks (49%), 7% of decks that could run it.
  • Herald's Horn45%$2.30
    Run in 245 of these decks (45%), 6% of decks that could run it.
  • Skullclamp39%$4.85
    Run in 212 of these decks (39%), 15% of decks that could run it.

Enchantments1

  • Cover of Darkness36%$8.33
    Run in 198 of these decks (36%), 2% of decks that could run it.

Lands6

  • Swarmyard55%$4.86
    Run in 302 of these decks (55%), 2% of decks that could run it.
  • Bojuka Bog45%$0.93
    Run in 247 of these decks (45%), 31% of decks that could run it.
  • Cabal Coffers44%$20.59
    Run in 239 of these decks (44%), 10% of decks that could run it.
  • Karn's Bastion41%$2.41
    Run in 223 of these decks (41%), 5% of decks that could run it.
  • Mudflat Village38%$0.38
    Run in 207 of these decks (38%), 1% of decks that could run it.
  • Rogue's Passage36%$0.27
    Run in 199 of these decks (36%), 25% of decks that could run it.

Cards that set Karumonix decks apart

These show up in Karumonix decks far more often than in other decks that could play them.

  • Piper of the Swarm$0.57

    81% of these decks, against 1% of other decks that could run it.

  • Blightbelly Rat$0.20

    78% of these decks, against 1% of other decks that could run it.

  • Marrow-Gnawer$23.30

    78% of these decks, against 1% of other decks that could run it.

  • Ogre Slumlord$0.30

    77% of these decks, against 1% of other decks that could run it.

  • Lord Skitter, Sewer King$4.55

    73% of these decks, against 1% of other decks that could run it.

  • Pack Rat$2.55

    73% of these decks, against 1% of other decks that could run it.

6 more signature cards
  • Ichor Rats$2.83

    68% of these decks, against 1% of other decks that could run it.

  • Rat Colony$4.75

    60% of these decks, against 1% of other decks that could run it.

  • Infectious Inquiry$0.40

    58% of these decks, against 1% of other decks that could run it.

  • Swarmyard$4.86

    55% of these decks, against 2% of other decks that could run it.

  • Vraska's Fall$0.30

    54% of these decks, against 2% of other decks that could run it.

  • Crypt Rats$0.61

    53% of these decks, against 1% of other decks that could run it.

Karumonix, the Rat King combos

120 of these decks (22%) run at least one combo listed on Commander Spellbook. These are the ones they run most.

  1. Marrow-GnawerplusThornbite Staff

    Infinite tokens, ETBs and LTBs

    12%64 decks
    Steps on Spellbook(opens in a new tab)

  2. Blowfly InfestationplusNest of Scarabs

    Infinite ETBs and LTBs

    4%19 decks
    Steps on Spellbook(opens in a new tab)

Commanders like Karumonix, the Rat King

Their decks lean on many of the same signature cards as Karumonix decks do.