Daravan's Legacy

This item serves as an arcane focus. Attacks
made while attuned to this orb always deal
necrotic damage. As an action, twice per night,
you may attempted to extract the bones out of a
living creature, killing it instantly. The creature
must pass a DC 10 Constitution saving throw. If
it fails, it dies and you create a skeleton with CR
half of the creature's original CR. It dissasembles
when you take a long rest.
''On my honor, this will work.''