Staff of Fire

While holding this staff you gain _resistance_ to fire damage, and you can use an action to expend charges to cast one of the following spells, using your spell save DC: __burning hands_ (1 charge), __fireball_ (3 charges), _wall of fire_ (4 charges). 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, the staff crumbles to ash and is destroyed.