The Elder Scrolls: Tamriel real

This magic quarterstaff has 10 charges. As an action, you can spend 1 charge to cast charm person, command, or comprehend languages using your spell save DC. If you fail a save against an enchantment spell that targets only you, you can succeed instead (once per dawn). If you succeed on such a save, you can use your reaction to spend 1 charge and turn the spell back on its caster. The staff regains 1d8 + 2 charges daily. On a 1 after using the last charge, it becomes nonmagical.