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

• Rarity: Uncommon
• Finish: Normal
• Artist: Kimonas Theodossiou
• Card Text:
  Flying
  Each creature you control that has an Adventure enters the battlefield with an additional +1/+1 counter on it. (It doesn't need to have gone on the adventure first.)