Charms

Description
Charms are a special type of items in Hollow Knight that gives bonuses to the bearer. Charms use notches when equipped and can only be equipped while sitting on a bench.

Overcharmed
Trying to equip a charm that takes more notches than the player has will eventually equip it, causing the player will become "Overcharmed". (It takes 5 tries.)

The player then benefits from all their equipped charms, but takes double damage.