Staff of Striking
Staff,
Very Rare
(requires attunement; cost 20000 gp)
Crafting Components
Petrified treant wood, thrice teleported quartz
You have a +3 bonus to attack and damage rolls made with this magic quarterstaff.
When you hit with a melee attack using this staff, you can expend up to 3 of its charges, dealing an extra 1d6 force damage per expended charge.
The staff has 10 charges and regains 1d6+4 expended charges each dawn. When the last charge is expended, roll a d20. On a 1, it loses its magical properties.
Source