4SRD:grim reaper

4SRD > Grim Reaper

Grim Reaper: You have the grim reaper Ghostly racial ability.
You use one death as the seed to sow more destruction.
(Free Action, range 25 feet)
Once per encounter, when a creature within 25 feet of you is reduced to 0 hit points, then one creature of your choice that you hit with an attack before the end of your next turn takes extra Necrotic damage equal to 1d8 + your Constitution modifier or Charisma modifier.