It is great timing for this.  I need to grind silver for the Artifact Event.  Is Plarium helping to make this fusion easier for us?

And I got the lego book at the end of Champ Training by luck.  I didnt aim for it.  I just played the game to get both champs and then fell into the lego.  Maybe Plarium Santa is smiling on us.  

It doesn´t work for me :(