Muk - 085/172 - Rare from Sword & Shield: Brilliant Stars, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Card Text:
  Ability — Sludge Road
  If your opponent’s Active Pokemon is Poisoned, its Retreat Cost is C more.
  [2D] Shrieking Poison (90)
  Your opponent’s Active Pokemon is now Poisoned and Confused.