Negative Energy Field (CR 17)

Negative Energy Field CR 17

XP 102,400

Channeled negative energy (10d6 points of damage, DC 25 Will save for half) every round to all creatures within 30 ft. of the triggering object as long as the triggering object is intact; 20d6 points of negative energy damage and 10d6 points of cold damage to any creature touching or passing through the area (no save; undead are healed by the negative energy and unaffected by the cold.)