Spend over 3,000 yen between April 10, 2015 (Friday) 13:00 - April 30 (Thursday) 13 o'clock
While supplies last
Stay tuned for future lineup announced!
There is also a mention of an album available when over 6,000 yen is spent. Upcoming cards seem to be Optimus Prime, Bumblebee, Megatron, Rodimus Convoy, Fort Max and Predaking.