Do as follows
1. Get Enough Piantas to by Seven power rushes
2. Go to Chet Rippo and decraise your HP to 5(IMPORTANT DO NOT SKIP THIS STEP)then put your fp to
50 and put the rest on your BP
3. Equipe 2 close calls,2 pretty luckies and 1 lucky day(Makes your chance of getting hit EXTREMLY LOW)
Also equip at least one multi bounce
4.Go down the pipenear prof.Franklys place and down the one to the right of this one. Go down the stairs and there will be bars on the walls go through the bars that has an opening in the back and use vivians veil to get across the spikes that come out and go back in. Equip that badge so that u can jump on spiky enemys.
5. buy 4 life shrooms
6.Make sure Gombella has Rally Wink and then enter the pit of one hundred trials(Gombella must be at Max for it to be a bit easier.
U will then clear the pit of 100 trials in at least 30 minutes!!!