Scrapper Champion (AER) from Aether Revolt, available at 401 Games Canada.

• Rarity: Uncommon
• Finish: Normal
• Artist: Magali Villeneuve
• Card Text:
  Double strike (This creature deals both first-strike and regular combat damage.)
  When Scrapper Champion enters the battlefield, you get EE (two energy counters).
  Whenever Scrapper Champion attacks, you may pay EE. If you do, put a +1/+1 counter on it.