Cemetery Prowler (VOW) from Innistrad: Crimson Vow, available at 401 Games Canada.

• Rarity: Mythic Rare
• Finish: Normal
• Artist: Daarken
• Card Text:
  Vigilance
  Whenever Cemetery Prowler enters the battlefield or attacks, exile a card from a graveyard.
  Spells you cast cost 1 less to cast for each card type they share with cards exiled with Cemetery Prowler.