Red Raven
I COULD BE BANNED!
Rain isn't particularly suited to be hyper offense. It is offensive in nature, as all weather teams should be, but it needs some defensive backbone because weather is no longer permanent. You really need a ground type otherwise you would be giving Zeraora or Tapu Koko a field day. On your team, I would just drop Thundurus and replace it with Crawdaunt or just merge Tornadus and Thundurus into Zapdos. Never build a rain team without an electric immunity otherwise repeated thunderbolts will take their toll even on FerrothornI wanna build HO rain consist of pelipper, ferro, barraskewda (swift swimmer), np spa tornadus (hurricane user), np thundurus (volt absorb + thunder) and the last would be sd crawdaunt. I don't wanna use urshifu because i dislike choice locked mon, only banded barraskewda. To deal with kyurem maybe close combat barraskewda & 2 focus blast torndurus can do it, I never good at playing other than setup spam HO.
Alternatively, Crawdaunt fits beautifully on actual hyper offense with your classic sash Lando and screens Koko but on rain, you have a tough time justifying it considering far better rain abusers like Keldeo and Urshifu exists and again, Kyurem still exists which makes it not unreasonable to use Scizor over a thunder user since Scizor also benefits from the rain