Black Blade of Disaster

This spell creates planar rift in shape of a longsword. Blade is considered +5 weapon and deals 2-24 damage. Every time Black Blade of Disaster hits victim have to make save vs. death with +4 modifier or be disintegrated. Also every hit has 10% chance of draining 4 levels from victim and healing caster for 20 hitpoints. Caster is considered to have grand master proficiency for purpose of wielding Black Blade of Disaster.