Gleaming Overseer (WAR) from War of the Spark, available at 401 Games Canada.

• Rarity: Uncommon
• Finish: Normal
• Artist: Volkan Baǵa
• Card Text:
  When Gleaming Overseer enters the battlefield, amass 1. (Put a +1/+1 counter on an Army you control. If you don't control one, create a 0/0 black Zombie Army creature token first.)
  Zombie tokens you control have hexproof and menace.