Staff of Striking

Staff, weapon, major, very rare (requires attunement)

• Damage:
  • One-handed: 1d6 bludgeoning
  • Two-handed: 1d8 bludgeoning
• Properties: Versatile
• Weight: 4.0 lbs.

This staff can be wielded as a magic quarterstaff that grants a +3 bonus to attack and damage rolls made with it.

The staff has 10 charges. When you hit with a melee attack using it, you can expend up to 3 of its charges. For each charge you expend, the target takes an extra 1d6 force damage. The staff regains 1d6 + 4 expended charges daily at dawn. If you expend the last charge, roll a d20. On a 1, the staff becomes a nonmagical quarterstaff.

Source: Dungeon Master’s Guide p. 203. Available in the SRD