You have resistance to radiant damage and you can cast the light cantrip at-will while you hold this staff.

The staff has 10 charges. While holding it, you can use an action to expend 1 or more of its charges to cast one of the following spells from it, using your spell save DC: flash (new)(1 charge), daylight (3 charges), holy glare (new) (4 charges), or shining armor (new) (5 charges).

The staff regains 1d6 + 4 expended charges daily at dawn. If you expend the last charge, roll a d20. On a 1, the staff vanishes in a flash of light and is destroyed.

Notes: Resistance: Radiant, Cleric, Sorcerer, Warlock, or Wizard, Damage, Control, Combat, Warding