Ignore all Pokémon Powers other than Toxic Gases. This power stops working while Muk is Asleep, Confused, or Paralyzed.
Attacks
30Sludge
Flip a coin. If heads, the Defending Pokémon is now Poisoned.
“Thickly covered with a filthy, vile sludge. It is so toxic, even its footprints contain poison.”
How much is Muk #13/62 worth?
As of November 6, 2026, Muk #13/62 from Fossil sells for around $11.41 in raw, ungraded condition. Across the 2 printings we track, copies run anywhere from $5.00 to $427.36 depending on the version you're holding.
Grading changes the math on this one: a PSA 10 is valued around $697.35, roughly 61.1x the raw price, while a PSA 9 sits near $57.61. 8,144 copies have been graded to date, and 4% of them came back a 10 — worth knowing before you pay grading fees.
We update this valuation every night from live market data and verify it against real completed sales — see the chart above for how Muk has moved over time.