This staff can be wielded as a magic quarterstaff that grants a +2 bonus to attack and damage rolls made with it (ranged spell attacks).  This staff is made of gnarled, old wood with a smooth gemstone orb in the shape of a skull embedded into it.  The staff can hold up to 5 charges at one time.  If the wielder kills a target within a 30ft radius with a melee or spell attack, the soul of that target is consumed by the staff, adding a charge to the weapon.  One of three abilities can be used with this staff with the charges.  If the user is attuned to the weapon, they can spend the stored charges to increase the hit die of their next attack by the number equal to the number of charges within the staff at the time, as a bonus action.  Or, they can absorb the charges stored within the staff to restore spell slots, as a bonus action.  One charge will restore a level-one spell slot.  Two charges will restore a level-two spell slot, and so on.  This effect can only be used once per turn.  Lastly, as a reaction, the user can consume all of the charges within the staff to cast the Shield Spell on themselves or another willing creature within sight.

Notes: Bonus: Spell Attacks, Bonus: Magic, Sorcerer, Warlock, or Wizard. Requires a 1 hour attunement for the wielder to study the arcane energies stored within the ring, Damage, Control, Combat, Warding