The Ultimate Tokidoki Unicorno

Found in a very weird bookstore in Aurora--not that the books were odd; but apparently no one had bought anything all day, so the staff was bored. The box that contained this was literally thrust into my hand when I said I was sort of looking for Tokidoki. Well, they weren't wrong-- this is what I was looking for (even though I didn't even know there was a mercorn in Series 4.)