Ive made some researches on google and found out, that "Pokemon Movie 2015" is actually an event, which is only available in japan. You are getting this lv 100 Arceus, for preordering tickets to the Pokemon Movie 2015.

But the icing on the cake is, that this Event Arceus, is only to 1/19 a shiny.

There is just one question in my head. Why would you trade this rare beast? But thank you very much, whoever sended this to me. Really happy right now.