D&Dtools1

Benefit

Whenever you bestow a negative level upon a creature, add your Charisma modifier to the hit points lost by the creature due to that negative level. You then gain temporary hit points equal to the amount lost by the creature due to the negative level. These temporary hit points last for up to 1 hour.

For example, a creature touched by a spectre (Cha 15) with this feat loses an additional 2 hit points due to each negative level, and the spectre gains an additional 2 temporary hit points from each negative level it bestows.

Special

Without this feat, a target loses 5 hit points each time it gains a negative level, and the creature delivering the negative level gains 5 temporary hit points that last for up to 1 hour.