Touch of the Gods.

The user draws out the spell symbol above them in pure light. A beam of light then comes crashing down from the sky onto the user and once the user is ready, they can smash the spell symbol into the ground creating a burst of energy that spreads worldwide curing all diseases, restoring all tormented/stollen souls, healing all wounds and restoring all hit points to maximum.

If this spell is cast by any being other than a god, the user will also die from the sheer power of the spell.