Circle of Death

Circle of death snuffs out the life force of living creatures. The spell slays 1d4 HD worth of living creatures per caster level (maximum 20d4). Those who are closest to the burst's point of origin are affected first. All creatures with 9 or less HD are slain outright, while creatures with more than 9 HD take 100 damage instead. HD that are not sufficient to affect a creature are wasted.