Sunbird's Invocation (BLC) from Bloomburrow Commander, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Jorge Jacinto
• Card Text:
  Whenever you cast a spell from your hand, reveal the top X cards of your library, where X is that spell's mana value. You may cast a spell with mana value X or less from among cards revealed this way without paying its mana cost. Put the rest on the bottom of your library in a random order.