Chaos Orb

A small orb of roughly shaped stone, with a crudely carved demonic face in the center featuring a gaping mouth and two rubies for eyes. As an action, you may throw the Chaos Orb at a target, making a ranged attack roll as you do so. On a successful hit, the Chaos Orb acts as the disintegrate spell, except that the target must succeed on a DC 20 Constitution saving throw to avoid damage. If the Chaos Orb successfully disintegrates its target, it bounces to another target of your choice within 10 feet of the original. This new target must also make a DC 20 Constitution saving throw or be affected as by the disintegrate spell, except the target takes half as much damage on a failed save. This may continue on to any number of targets you designate, with each taking half as much damage as the previous target, until the Chaos Orb fails to successfully destroy a target. The Chaos Orb may only strike up to five inanimate objects before its magic is automatically spent, and its effect ends.