Magic

Prices updated

Karumonix, the Rat King Phyrexia: All Will Be One MTG card
ONE #98 · Art by Helge C. Balzer
ONE set symbol, RarePhyrexia: All Will Be One#98Rare

Karumonix, the Rat King

Legendary Creature · Phyrexian RatToxic
TCGplayer market · ONE #98 nonfoil
$0.83 −5.7% −$0.05, 7 days
1-year range
30 days
−9.8%
EDHREC rank
#3,561 Down 28 in 30 days
Best buylist
Not available

Buy ONE #98 nonfoil

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Karumonix, the Rat King Price Summary

The benchmark price (cheapest playable nonfoil) is $0.83, down 5.7% over 7 days, down 9.8% over 30 days, down 29.7% over 90 days.

Karumonix, the Rat King Price History

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Karumonix, the Rat King price history chart, default range 3 months. currently $0.83.

Where to Buy and Sell Karumonix, the Rat King

Every market we track for ONE #98 nonfoil on one line. The gray band is what you give up selling to a store instead of buying at market.

Karumonix, the Rat King in Sealed Products

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Karumonix, the Rat King Printings & Prices

Karumonix, the Rat King has 6 tracked printings across 2 sets, in foil, nonfoil and step and compleat foil finishes, including showcase, promo pack and prerelease treatments.

ONE set symbol, RareONE #282
Bundle
ONE set symbol, RareONE #98
Viewing
ONE set symbol, RareONE #307
BorderlessShowcase
PONE set symbol, RarePONE #98p
Promo Pack
PONE set symbol, RarePONE #98s
PrereleaseDate-stamped
ONE set symbol, RareONE #439
BorderlessShowcase

Sell Karumonix, the Rat King: Buylist Offers

BuyerPrintingFinishCash offerMarketSpread to market
Card KingdomONE #439Step and Compleat Foil
CoolStuffIncONE #439Step and Compleat Foil
Card KingdomPONE #98sFoil
Card KingdomONE #307Nonfoil
Card KingdomPONE #98pFoil
Card KingdomONE #307Foil
Card KingdomONE #282Foil
CoolStuffIncONE #307Foil
Card KingdomONE #98Foil
Card KingdomPONE #98pNonfoil

Karumonix, the Rat King Rules Text & Legality

Karumonix, the Rat King

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.

Karumonix, the Rat King is legal in Pioneer, Modern, Legacy and Commander, and not legal in Standard and Pauper.

View on Scryfall ↗

Karumonix, the Rat King Rulings

  • Feb 4, 2023

    A player with ten or more poison counters loses the game. This is a state-based action and doesn't use the stack. In other words, it happens immediately and players can't respond to it, just like a player losing the game due to having 0 or less life.

  • Feb 4, 2023

    Any other effects of that damage, such as life gain from lifelink, still apply.

  • Feb 4, 2023

    Conversely, replacement effects that apply to the number of counters put on a player can modify the counters placed this way. For example, Vorinclex, Monstrous Raider's last two abilities can apply to counters placed this way.

  • Feb 4, 2023

    Damage dealt by a creature with toxic grants the same number of counters regardless of how much damage is dealt. Notably, if a replacement effect modifies the damage in some way (such as that of Gratuitous Violence), the number of counters given remains unchanged.

  • Feb 4, 2023

    If a creature with toxic deals combat damage to a creature or planeswalker, or if it deals noncombat damage, toxic has no effect and no player gets poison counters.

Reprints & Reprint Risk

Karumonix, the Rat King has been reprinted 9 times.

  • Feb 10, 2023ONE set symbol, RarePhyrexia: All Will Be OneONE #98
  • Feb 10, 2023ONE set symbol, RarePhyrexia: All Will Be One · foilONE #98
  • Feb 10, 2023ONE set symbol, RarePhyrexia: All Will Be One · foilONE #282
  • Feb 10, 2023ONE set symbol, RarePhyrexia: All Will Be One · Showcase, foilONE #439
  • Feb 10, 2023PONE set symbol, RarePhyrexia: All Will Be One Promos · Promo PackPONE #98p
  • Feb 10, 2023PONE set symbol, RarePhyrexia: All Will Be One Promos · Promo Pack, foilPONE #98p
  • Feb 10, 2023PONE set symbol, RarePhyrexia: All Will Be One Promos · Prerelease, foilPONE #98s
  • Feb 10, 2023ONE set symbol, RarePhyrexia: All Will Be One · ShowcaseONE #307
  • Feb 10, 2023ONE set symbol, RarePhyrexia: All Will Be One · Showcase, foilONE #307

Karumonix, the Rat King in Commander

Karumonix, the Rat King is the #3,561 most-played card on EDHREC, down 28 places over the last 30 days.

#3,561 EDHREC rank
across all Commander decks Down 28 in 30 days

Karumonix, the Rat King FAQ

How much is Karumonix, the Rat King worth?

Karumonix, the Rat King is worth about $0.83 for its cheapest playable printing as of Nov 8, 2026.

Is Karumonix, the Rat King legal in Commander?

Yes. Karumonix, the Rat King is legal in Commander. It is also legal in Pioneer, Modern and Legacy.

Has Karumonix, the Rat King been reprinted?

Yes. Karumonix, the Rat King has been reprinted 9 times, with 6 printings tracked on The Index.

Why is Karumonix, the Rat King cheap?

Karumonix, the Rat King trades at about $0.83; 9 reprints keep supply plentiful.