> A positive energy elemental infuses a target hit by its slam attack with positive energy. This deals extra damage to an undead or negative energy based target (as listed in the statistics block) but heals positive energy based creatures (including creatures from the Material Plane) by the same amount. Such creatures can be healed above their normal hit point total, gaining extra hit points as temporary hit points. These temporary hit points disappear 1 minute later.
Creatures healed to twice their normal hit points (that is, a creature whose hit points are effectively doubled) must succe…