Leppa Berry (item)

When held in battle, restores a puppet's move's PP by 10 once it has reached 0.

Competitive use Probably none. If you're running out of PP too often, then that's probably because you're running something defensive, in which case you'd just want a more reliable move instead of wasting your item slot.

(As of August 6, 2013, the item is now implemented on Shoddy, mainly due to the sake of completion.)