What is the point of perish count when we can’t use it? Every time the trainer withdraws its pokemon even in easy mode? This is really frustrating because it can be a pretty good move in hard battles…
Use it on their last pokémon and watch them face their inevitable death.
Or you can even trap them whit Shadow Tag ability or whit somme attakc like Magma Storm, Fire Spin or Wirlpool. This strategy is called Perish Trap.