Unown - 30/98 - Common - Reverse Holo from XY: Ancient Origins, available at 401 Games Canada.

• Rarity: Common
• Finish: Reverse Holo
• Artist: Akira Komayama
• Card Text:
  Ability - Farewell Letter
  Once during your turn (before your attack), if this Pokemon is on your Bench, you may discard this Pokemon and all cards attached to it (this does not count as a Knock Out). If you do, draw a card.
  [1] Hidden Power (10)