Greninja Star - SWSH144 - Holo Promo from Sword & Shield Promos, available at 401 Games Canada.

• Rarity: Promo
• Finish: Holofoil
• Card Text:
  [Poke-POWER]
  When you play this Pokemon from your hand onto your Bench during your turn, you may put 1 damage counter on 1 of your opponent's Pokemon.
  [2D] Mist Slash (100)
  This attack's damage isn't affected by Weakness or Resistance, of by any effects on your opponent's Active Pokemon.