Ardent Plea (ARB) from Alara Reborn, available at 401 Games Canada.

• Rarity: Uncommon
• Finish: Normal
• Artist: Chippy
• Card Text:
  Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.)
  Cascade (When you play this spell, remove cards from the top of your library from the game until you remove a nonland card that costs less. You may play it without paying its mana cost. Put the removed cards on the bottom in a random order.)