Rhet-Crop Spearmaster (Foil) (AKH) from Amonkhet, available at 401 Games Canada.

• Rarity: Common
• Finish: Foil
• Artist: Dan Murayama Scott
• Card Text:
  You may exert Rhet-Crop Spearmaster as it attacks. When you do, it gets +1/+0 and gains first strike until end of turn. (An exerted creature won't untap during your next untap step.)