>>39164498I REALLY regret not using it during Gen 7.
Was extremely underleveled for the Elite 4 with no good grind spots to fix it. On one good Pokemon and item spam alone, I made it through that hell, only to become immediately trapped in the postgame where there's still no good grinding spots, and everyone is even higher level. To get to the only decent postgame grinding spot, I have to beat multiple Red strength trainers, and Red himself along with Blue are blocking the way to the postgame facility. It is like being mashed into oblivion, and the only thing that helps is the battle buffet thing you only are allowed to do once a day.