Ahn-Crop Crasher (J25) from Foundations Jumpstart, available at 401 Games Canada.

• Rarity: Uncommon
• Finish: Normal
• Artist: Seb McKinnon
• Card Text:
  Haste (This creature can attack and T as soon as it comes under your control.)
  You may exert Ahn-Crop Crasher as it attacks. When you do, target creature can't block this turn. (An exerted creature won't untap during your next untap step.)