Staff of Fire

The staff has 10 Charges.
Action: Expend 1 or more of its Charges to
cast one of the following Spells from it, using
your spell save DC:
•Burning Hands (1 charge),
•Fireball (3 charges), or
•Wall of Fire (4 charges).
The staff regains 1d6 + 4 Charges at dawn.
If you expend the last charge, roll a d20. On a 1,
the staff blackens, crumbles into cinders, and is destroyed.