Destruction Retribution

Destruction Retribution:

Prerequisites: CL 9 Ability to cast command undead or command undead feat, corpse crafter, bolster resistance, deadly chill.

Each undead you raise or create with any necromancy spell releases a burst of negative energy upon its destruction, dealing 1d6 points of damage plus an additional 1d6 points per 2  Hit  Dice  to  every  creature  within  a  10-foot  spread  (Reflex  DC 10+ 1/2 level + casting stat). This damage comes from negative energy, and it therefore heals undead creatures. you can choose to negate squares like an alchemist bomb.