Lum Berry (item)

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

Competitive use One-time status immunity is useful, especially with all the and  being thrown around. Just remember that this only works once and without discrimination - if your fast special attacker gets burned, it'll activate and then leave you prone to paralysis. If you're only afraid of one status, use a specific Berry instead.