Persim Berry (item)

If the holder is inflicted with confusion, then they are instantly cured. One-time use.

Competitive use is everywhere and it's infuriating 10% of the time, but not infuriating enough to dedicate your item slot to Persim. You can always use this alongside, but one of the users has and you miss out being able to use Special  to hit harder and switching out of confusion. If you're going to boost and use Shadow Dance though, this may work out for you.