Hooded Assassin (FRF) from Fate Reforged, available at 401 Games Canada.

• Rarity: Common
• Finish: Normal
• Artist: Matt Stewart
• Card Text:
  When Hooded Assassin enters the battlefield, choose one —
  • Put a +1/+1 counter on Hooded Assassin.
  • Destroy target creature that was dealt damage this turn.