I was testing every possible thing, because I lack a good spinner for my team. Since Dinphan has a terrible SpD, I tried to buff it.
Well... It doesn't use any status move normally, so why not try Assault Vest?
Of course, there are still things that counter it well, and boosted hits are hard to take. But it's funny to see people rage-quit when their coverage move Ice Beam doesn't 2HKO.