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  6. Karumonix, the Rat King (Showcase)

Magic · Phyrexia: All Will Be One · #307 · Rare

Karumonix, the Rat King (Showcase)

Magic card price for Karumonix, the Rat King (Showcase): $1.88 market, from $0.73 at the cheapest listing, Foil printing, updated Oct 18, 2026. Full price history since Feb 8, 2024 below.

Market price · Foil · Oct 18, 2026
$1.88
−12.2% this week · −14.2% in 30 days
Buy on eBay →
1 day−5.1%
7 days−12.2%
30 days−14.2%
90 days+20.5%
1 year+157.5%
All time+422.2%

Sellers right now

$0.73lowest listing$10.33highest
Market price$1.88
Mid listing$1.99
Direct$4.49
30-day avg$2.15

Market price is what a near-mint copy actually sold for. The cheapest listing is what a seller asks today — on thin markets the two differ a lot.

Where to buy

TCGplayer$1.88
Cardmarket$1.16 €1.03

EUR converted at 1.1253 (ECB reference rate). Shipping and condition not included.

One year

$0.6252-week low$2.2752-week high
In the range76%
All-time low$0.35
All-time high$2.27
First priceFeb 8, 2024
Foil · market priceCardmarket (EU, in USD)
$0.25$0.98$1.71$2.44
$1.88
Feb 2024Dec 2024Nov 2025Oct 2026
TCGplayer · via tcgcsv · Cardmarket · via MTGJSONtcgrate.com

Price story

Karumonix, the Rat King (Showcase) (Foil) entered our records in February 2024 at $0.36 and stands at $1.88 today, up 422% over that time. Over the past twelve months it moved +158%, trading between $0.62 and $2.27. The current price is in the middle of that range. Its all-time high in our data is $2.27, still 20.7% above the current price. The cheapest listing right now is $0.73, and the 30-day average market price is $2.15.

Printings

PrintingMarketLowHigh7d
Foil$1.88$0.73$10.33−12.2%
Normal$1.43$0.42$20.00−2.7%

The card in play

Power / Toughness3 / 3
Type line
Legendary Creature — Phyrexian Rat
Rules text

Toxic 1

Other Rats you control have toxic 1.

When Karumonix enters the battlefield, 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.

Other printings of Karumonix, the Rat King

5 more · $0.71 – $14.24
All printings
Karumonix, the Rat King (Showcase) (Step-and-Compleat Foil) (439), Phyrexia: All Will Be One — Magic card price −1.3% 7d Karumonix, the Rat King (Showcase) (Step-and-Compleat Foil) Phyrexia: All Will Be One · #439 $14.24 Karumonix, the Rat King (98), Prerelease Cards — Magic card price 0.0% 7d Karumonix, the Rat King Prerelease Cards · #98 $6.85 Karumonix, the Rat King (98), Promo Pack: Phyrexia: All Will Be One — Magic card price +6.9% 7d Karumonix, the Rat King Promo Pack: Phyrexia: All Will Be One · #98 $1.39 Karumonix, the Rat King (98), Phyrexia: All Will Be One — Magic card price −0.8% 7d Karumonix, the Rat King Phyrexia: All Will Be One · #98 $1.31 Karumonix, the Rat King (ONE Bundle) (282), Unique and Miscellaneous Promos — Magic card price 0.0% 7d Karumonix, the Rat King (ONE Bundle) Unique and Miscellaneous Promos · #282 $0.71

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