Deepcavern Imp (MMA) from Modern Masters, available at 401 Games Canada.

• Rarity: Common
• Finish: Normal
• Artist: Scott Altmann
• Card Text:
  Flying, haste
  Echo—Discard a card. (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)