Blood Tribute (ZEN) from Zendikar, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Alex Horley-Orlandelli
• Card Text:
  Kicker—Tap an untapped Vampire you control. (You may tap a Vampire you control in addition to any other costs as you cast this spell.)
  Target opponent loses half his or her life, rounded up. If Blood Tribute was kicked, you gain life equal to the life lost this way.