Joust (ELD) from Throne of Eldraine, available at 401 Games Canada.

• Rarity: Uncommon
• Finish: Normal
• Artist: Bram Sels
• Card Text:
  Choose target creature you control and target creature you don’t control. The creature you control gets +2/+1 until end of turn if it’s a Knight. Then those creatures fight each other. (Each deals damage equal to its power to the other.)