It's really fragile and not very straight-forward to use in my opinion right now, but I will try to see how to use Breloom properly and how overpowered it can be.
http://replay.pokemonshowdown.com/gen7uususpecttest-760777056
I used Breloom and had some graphical glitches^
Also, Breloom is really weak, I don't understand why people think it's OP.