All creatures in the area of the spell are subject to the effects of the heal seed, plus the effect of an atonement spell. Furthermore, any negative magical effects on the subjects, including curses, charm effects, and compulsion effects, are dispelled. Any undead creature in the area that has been undead for less than 1 month per caster level is instantly reverted to its pre-undead state, regaining its former alignment and personality, but losing its undead template (it regains its Constitution, Intelligence (if non-intelligent), and any feats, special attacks, and special qualities that it may have lost due to its template, but loses all features that it gained due to its template). An undead creature that has been undead for longer than that time is not reverted, and must make a Will sa