Board Thread:News and Announcements in game/@comment-31090299-20170712201017/@comment-27996636-20170712204823

Probably another way to get you to spend money if you havent summoned yet. See how it was exactly the same amount of stones that it costs to do the first discount, and with only a few hours left of the day, you might be tempted to buy more stones in order to get to the free multi summon.

But I like your expination better.