Since Slowbro has been brought up, I might as well talk about it.
So I feel Slowbro is an excellent Pokemon primarily for the reasons that Jordy brought up, its a very consistent Future Sight user due to its combination of Regenerator and Teleport and this, alongside its already good defensive utility gives it multiple opportunities to use it and allow its wallbreaking teammates to abuse them. So I'm going to go over few things and then determine what I feel about Slowbro in the metagame and if its unhealthy overall.
First thing I want to talk about is how it fits into the metagame outside of Future Sight. Its a great defensive Pokemon that I feel adds a multitude of positives, such as being a Melmetal, Garchomp, Landorus-T, Blaziken, and Excadrill check; I could go on and on about the amount of prominent Pokemon it checks but the next thing I want to get into is its amazing longevity. It has Slack Off and Regenerator along with Teleport, so you are mostly not going to be wearing it down or even knocking it out anytime soon considering that it will not really lose momentum by a lot of damage 1 turn because after a few more turns of switching in and out your Slowbro is back up to full. It has a lot of amazing elements for it, now we have to go into the big part of it and what really separates it from the other Bulky waters.
Yeah this is the one right here. Future Sight is a ridiculous move and Slowbro uses it to an extent that no other Pokemon could ever really replicate, not even Slowking because it doesn't have the same defensive value as Slowbro does. Slowbro fits on a wide range of teams and pretty easily because of its useful traits, and with how good Future Sight is at applying pressure to teams, Slowbro I feel its probably too good of a supporter to these Pokemon sometimes. This is really only Slowbro doing this as well, because no other Pokemon has the tools to actually use Future Sight to such an absurdbly consistent level that Slowbro does. That's my main issue with how Slowbro supports these Pokemon with Future Sight, its too consistent at doing it and overall just too low risk and high reward to not really go for in almost every game, especially when you factor in how dangerous some of our breakers are, and when you add how Slowbro supports the very best ones with Future Sight, the pressure is always going to come in practice.
So I think from reading you already know how I feel about Slowbro and its impact, its insanely good and bordering on the line of oppressive and unhealthy with how it is far too consistent at pulling the Future Sight off, how it is too low risk and high reward of a strategy to go for, and how it matches up with a vast majority of our best offensive Pokemon. But if its broken, I am going to have to say no though. However I do think this Pokemon is definitely problematic and I would put it under my radar. Hopefully you guys enjoyed this post.
Thanks for reading!