Aven Mimeomancer (ARB) from Alara Reborn, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Jesper Ejsing
• Card Text:
  Flying
  At the beginning of your upkeep, you may put a feather counter on target creature. If you do, that creature is 3/1 and has flying as long as it has a feather counter on it.