Grim Roustabout (RTR) from Return to Ravnica, available at 401 Games Canada.

• Rarity: Common
• Finish: Normal
• Artist: Steven Belledin
• Card Text:
  Unleash (You may have this creature enter the battlefield with a +1/+1 counter on it. It can't block as long as it has a +1/+1 counter on it.)
  1B: Regenerate Grim Roustabout.