Karumonix, the Rat King
~$0.72 low · ~$14.43 high
Black. Legendary Creature — Phyrexian Rat
Phyrexia: All Will Be One #98 · Illustrated by Helge C. Balzer
Phyrexia: All Will Be One #98 · Illustrated by Helge C. BalzerWhat is Karumonix, the Rat King worth?
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TCGplayer market prices in USD, updated October 14, 2026. Each price is for one printing and one finish.
Oracle text
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.
3/3
Format legality
All 6 printings of Karumonix, the Rat King
| Printing | Rarity | Non-foil | Foil | Cardmarket (EUR) | My collection |
|---|---|---|---|---|---|
 Phyrexia: All Will Be One one #98· 2023rare· Cardmarket €0.51 · €0.74 foil | rare | $1.12 | $1.33 | €0.51€0.74 foil | |
 Phyrexia: All Will Be One one #282· 2023Promorare· Cardmarket €0.53 foil | rare | No non-foil printing | $0.72 | €0.53 foil | |
 Phyrexia: All Will Be One one #307· 2023BorderlessShowcaserare· Cardmarket €0.59 · €0.99 foil | rare | $1.58 | $2.07 | €0.59€0.99 foil | |
 Phyrexia: All Will Be One one #439· 2023BorderlessShowcaserare· Cardmarket €8.80 foil | rare | No non-foil printing | $14.43 | €8.80 foil | |
 Phyrexia: All Will Be One Promos pone #98p· 2023Promorare· Cardmarket €0.37 · €0.51 foil | rare | $1.16 | $1.39 | €0.37€0.51 foil | |
 Phyrexia: All Will Be One Promos pone #98s· 2023Promorare· Cardmarket €1.64 foil | rare | No non-foil printing | $6.85 | €1.64 foil |
Prices are TCGplayer market prices in USD for each printing and finish, via Scryfall. They are a guide, not an appraisal.
Where to buy Karumonix, the Rat King
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Card details
- First printed
- 2023
- Printings
- 6
- Mana value
- 3
- EDHREC rank
- #3,541 on EDHREC (Commander popularity)
- Keywords
- Toxic
- Artists
- Helge C. Balzer, Jason A. Engle, Flavio Girón
What the codes mean
The small print at the bottom of the Phyrexia: All Will Be One card (#98).
098 · ONE · R · EN
- 098Collector number: this card's place in the set list. Main-set cards print it over the set's card count.
- ONESet code for Phyrexia: All Will Be One
- RRare
- ENPrinted in English
How to read a Magic card: every part and code, on real cards.
Rulings (7)
2023-02-04
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.
2023-02-04
Any other effects of that damage, such as life gain from lifelink, still apply.
2023-02-04
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.
2023-02-04
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.
2023-02-04
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.
2023-02-04
Toxic doesn't change the amount of combat damage a creature deals. For example, if a 2/2 creature with toxic 1 deals combat damage to a player, that creature will deal 2 damage. The results of that damage are the player loses 2 life and gets a poison counter.
2023-02-04
Multiple instances of toxic are cumulative. For example, if a creature has toxic 2 and gains toxic 1 due to another effect, combat damage that creature deals to a player will cause that player to get 3 poison counters.
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