A Look at Monster Book

It's only AWESOME, now, i mean in future, there'll be no need to check all 5sec on HS to find a monster after a complete book.
I've some question does the monster book give something when it's all complete by Master level (5)? like a special skill, a special item ?
Does anyone on those version of MS ever finished one yet ?

Well, it's literally impossible for anyone to have a complete book because KMS keeps adding cards for PQ bosses (Poison Golem for example, came out after the card-buying event) and then Pink Bean at the same time. So even if someone was weak enough to get Poison Golem's card, they couldn't get Pink Bean, and vice versa. Rather frustrating. I don't think there's any reward for finishing it though, aside from a wealth of information right there. :p