Prosperous Daybreak is a limited time card pack available on September 16, 2013 at 8:00 PM (PST). The pack featured a new power 17 Ultra Rare, which at the time of this writing, is the most powerful attack card in the game.
Draws were available in three stages, with each stage featuring at least three cards from the LCP, and additionally featuring an increased rate draw rate for the new Ultra Rare with each stage, up to a 5x rate. Upon reaching the last stage, players are reset back to the first.
Additionally, by drawing from the pack, players may accrue points toward a special standing, with the highest ranking players earning various prizes, including the new Ultra Rare. Points are awarded based on the total attack and defense of the cards drawn.