A black ray of crackling negative energy suppresses the life force of any living creature it strikes, giving an enemy 1 to 4 negative levels and applying a stacking Negative damage over time. If the target has as many negative levels as its hit dice or levels, it dies. Each negative level gives a creature a -2 penalty on attack rolls, saves, skill checks, ability checks, and effective level. Negative levels stack. As a ray this spell has double range.

D&D Dice Gives enemies 1d4 negative levels and applies a Negative damage over time effect for 1d6 Negative damage + 1 per caster level for 16 seconds, stacking 3 times.