Amulet of amplified damage

   This amulet has three charges, one charge can be expended to double all damage on a single attack, however next attack that hits you has double damage as well. A second or third charge can’t not be used unless you have been hit in return or until the next day where all charges are restored. This can be used after you find out weather you've hit or not, and on any attacks that require the target to make a save.

Notes: Focus on the amulet for an hour