Razormane Masticore (10E) from Tenth Edition, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Jim Murray
• Card Text:
  First strike (This creature deals combat damage before creatures without first strike.)
  At the beginning of your upkeep, sacrifice Razormane Masticore unless you discard a card.
  At the beginning of your draw step, you may have Razormane Masticore deal 3 damage to target creature.