Elvish Harbinger (LRW) from Lorwyn, available at 401 Games Canada.

• Rarity: Uncommon
• Finish: Normal
• Artist: Larry MacDougall
• Card Text:
  When Elvish Harbinger comes into play, you may search your library for an Elf card, reveal it, then shuffle your library and put that card on top of it.
  T: Add one mana of any color to your mana pool.