Wayward Angel (ODY) from Odyssey, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Mark Tedin
• Card Text:
  Flying
  Attacking doesn't cause Wayward Angel to tap.
  Threshold — Wayward Angel gets +3/+3, is black, has trample, and has "At the beginning of your upkeep, sacrifice a creature." (You have threshold as long as seven or more cards are in your graveyard.)