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Karumonix, the Rat King
Price history
Karumonix, the Rat King price history chart, default range 3 months. currently $1.18.
Karumonix, the Rat King Price Summary
Karumonix, the Rat King's current headline price is $1.18.
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.
All finishes
Sell Karumonix, the Rat King: Buylist Offers
| Buyer | Printing | Finish | Cash offer | Retail | Spread |
|---|---|---|---|---|---|
| CoolStuffInc | ONE #439 | Step and Compleat Foil | — | — | — |
| Card Kingdom | ONE #439 | Step and Compleat Foil | — | — | — |
| Card Kingdom | PONE #98s | Foil | — | — | — |
| Card Kingdom | PONE #98p | Nonfoil | — | — | — |
| Card Kingdom | ONE #98 | Nonfoil | — | — | — |
| Card Kingdom | ONE #98 | Foil | — | — | — |
| CoolStuffInc | ONE #307 | Foil | — | — | — |
| Card Kingdom | ONE #307 | Foil | — | — | — |
| Card Kingdom | PONE #98p | Foil | — | — | — |
| Card Kingdom | ONE #307 | Nonfoil | — | — | — |
Karumonix, the Rat King Rules Text & Legality
View on Scryfall ↗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.
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.
| Set | Date | Rarity | Treatment |
|---|---|---|---|
| ONE #307 | 2023-02-10 | Rare | Showcase |
| ONE #307 | 2023-02-10 | Rare | Showcase |
| PONE #98s | 2023-02-10 | Rare | Prerelease |
| PONE #98p | 2023-02-10 | Rare | Promo Pack |
| PONE #98p | 2023-02-10 | Rare | Promo Pack |
| ONE #439 | 2023-02-10 | Rare | Showcase |
| ONE #282 | 2023-02-10 | Rare | Standard |
| ONE #98 | 2023-02-10 | Rare | Standard |
| ONE #98 | 2023-02-10 | Rare | Standard |
ONE #307 Karumonix, the Rat King in Commander
Karumonix, the Rat King is the #3,512 most-played card on EDHREC, down 192 places over the last 30 days.
Karumonix, the Rat King FAQ
How much is Karumonix, the Rat King worth?
Karumonix, the Rat King is worth about $1.18 for its cheapest playable printing as of Sep 22, 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 $1.18 — 9 reprints keep supply plentiful.