Shielded Aether Thief (AER) from Aether Revolt, available at 401 Games Canada.

• Rarity: Uncommon
• Finish: Normal
• Artist: Lake Hurwitz
• Card Text:
  Flash (You may cast this spell any time you could cast an instant.)
  Whenever Shielded Aether Thief blocks, you get E (an energy counter).
  T, Pay EEE: Draw a card.