Whimsicott - 006/202 - Rare from Sword & Shield (Base Set), available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: kodama
• Card Text:
  [1] Cotton Drift
  Flip a coin. If heads, shuffle your opponent’s Active Pokémon and all cards attached to it into their deck.
  [G] Leaf Step (50)