Reversion

By casting this spell, the priest reverses certain recent events in the area of effect. The spell affects only creatures friendly to the priest. The magic takes effect immediately after the spell is completed rather than at the end of the round.
All damage suffered by the priest's allies during the previous turn is undone. This includes energy drains, poison, and all special attack forms unless these resulted in instantaneous death. Death from cumulative physical damage is undone, however. Any creature brought back to life by the reversion spell is not required to make a resurrection survival roll.
Any spells cast by the priest's allies during the previous turn are restored and may be used again. This does not apply to magical or spell-like effects from magical items or scrolls. Material components consumed in spellcasting during this time are also restored.
The reversion spell affects only creatures and characters. Equipment and magical items are not affected. Casting this spell ages the priest one year.

[Tome of Magic]

Sphere: Time
(Alteration, Invocation)
Quest

Range: 0
Components: V, S
Duration: Instantaneous
Casting Time: 1
Area of Effect: 10-foot-radius sphere
Saving Throw: None