There is a Remastered version
here.
Massacre
[two-actions] Spell 9Legacy Content
Death Necromancy Negative Source Core Rulebook pg. 350 4.0Traditions arcane,
divine,
primalBloodline psychopompCast [two-actions] somatic,
verbalArea 60-foot line
Saving Throw Fortitude
You unleash a wave of necromantic energy to snuff out the life force of those in its path. Each living creature of 17th level or lower in the line must attempt a Fortitude save. If the damage from
massacre reduces a creature to 0 Hit Points, that creature dies instantly. If
massacre doesn't kill even a single creature, the negative energy violently explodes back toward you, dealing an additional 30 negative damage to every living creature in the line (even those above 17th level) and 30 negative damage to you.
Critical Success The creature is unaffected.
Success The creature takes 9d6 negative damage.
Failure The creature takes 100 negative damage.
Critical Failure The creature dies.
Heightened (10th) The spell can affect creatures up to 19th level. Increase the damage to 10d6 on a success, and to 115 on a failure.