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Karumonix, the Rat King — Commander Hub · Mythicwyrm

Karumonix, the Rat King

Legendary Creature — Phyrexian Rat

Karumonix, the Rat King

Mana value3EDHREC#3,283

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The Commander

Guide

Gameplan

Strengths

Weaknesses

Key Cards

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Upgrade Path

Core Cards

The most-played cards for this commander, built from aggregated deck data (the Mythic Graph). Build public decks to seed it.

Win Conditions

Discussion (0)

▸Ten poison counters via toxic combat damage across the board

▸Go-wide alpha strike with anthems like Coat of Arms or Door of Destinies

▸Skithiryx or proliferate effects pushing players over the poison threshold

Archetypes

Tribal Aggro — Karumonix anthems Rats with toxic and refuels the swarm for relentless wide attacks.
Poison/Toxic — Granting toxic to a token army lets you assemble ten poison counters quickly.
Aristocrats — Mono-black sacrifice payoffs drain the table while the Rat swarm provides bodies.

Combos

No combos found for this commander on Commander Spellbook.

Related Commanders

Same color identity (B), by popularity.

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Vito, Thorn of the Dusk Rose

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Sheoldred, Whispering One

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Yawgmoth, Thran Physician

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Ayara, First of Locthwain

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Yahenni, Undying Partisan

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K'rrik, Son of Yawgmoth

EDHREC #1,066

Vilis, Broker of Blood

EDHREC #1,092

Junji, the Midnight Sky

EDHREC #1,208

Mikaeus, the Unhallowed

EDHREC #1,259

Toxic 1 (Players dealt combat damage by this creature also get a poison counter.)

Other Rats you control have toxic 1.

When Karumonix enters, look at the top five cards of your library. You may reveal any number of Rat cards from among them and put the revealed cards into your hand. Put the rest on the bottom of your library in a random order.

Flood the board with Rats, grant them all toxic, and kill the table via poison counters (10 = dead) backed by go-wide combat damage. Karumonix refills your hand with Rats every time it enters, so you rebuild quickly through removal and grind out wide, evasive attacks.

Mono-black gives unmatched tutors, recursion, and ramp (Crypt Ghast, Cabal Coffers)

Karumonix's ETB card advantage makes it hard to run out of gas

Toxic plus go-wide creates a fast, alternate win that dodges life-gain

Cheap commander that's easy to recast after removal

Heavily reliant on board presence; board wipes are devastating

Single color limits access to protection, counters, and flexible interaction

Rat tribal payoffs are thin, so the deck leans on raw numbers

Poison plans draw early hate from experienced tables

Token doubler and Rat lord that floods the board with creatures that all gain toxic.

Discard outlet that snowballs into a huge army of buffed, toxic Rats.

Skithiryx, the Blight Dragon

Evasive infect/toxic finisher that can swing games on its own.

With Urborg it pumps out enormous mana to deploy and pump your swarm.

Anthem that turns a wide Rat board into lethal toxic damage fast.

Add proliferate enablers (Tekuthal, Vraska, Thrummingbird) to accelerate poison kills, and tighten the curve with token doublers and anthems. Improve ramp with Cabal Coffers, Urborg, and Crypt Ghast, and add protection like Heroic Intervention plus board-wipe insurance such as Skullclamp and recursion to recover after wraths.