Yay! Just RNG'd that shiny Thundurus.
Though it doesn't have any useful Hidden Powers, but I think it will still hit hard, especially with Nasty Plot boosts.
Just a quint-flawless IV set, 31/7/31/31/31/31.
I think maybe because it makes it easier to find out what starting frames I hit, because if we use Hidden Power IVs sometimes, it could mean less 31 IVs, and less characteristics, making it vague and unclear for me to find out what frame I hit.
I have to wait for April 1 though to catch it, because that's Prankster Day :p
Besides, Thundurus likes to do pranks ;)