The Countdown Login Promo started on April 15, 2017 at 8:00 PM (PST) to celebrate the upcoming 5th anniversary of the game and as a teaser for the 5th Anniversary Campaign.
User have the chance to acquire the exclusive 3-stage UR Parade-Leading Lyralilla by accessing the Top Page before 5:00 AM (PST) every day to receive that day's stamp.
The login period lasts until May 5, 2017, 7:59 PM (PST), but only 10 stamps are needed to receive all cards.