Eternal Repose

You touch a corpse or other remains. For the duration, the target is protected from decay and can't become undead. The gold coins used in the casting of this spell are magically bound to the eyes of the target, and are inseparable until the spell is dispelled. If the corpse becomes damaged in any way, the body regenerates to the state of the body at the time the spell was cast so long as the body parts are touching, preferring to reunite with existing body parts if possible. When casting this spell, designate a 5m area to which the corpse is bound. If the body or any of its parts are removed from this 5m area, it will move towards this area at a movement and climbing speed of 5m/day until it is within the area and fully intact. If this movement is obstructed, the body or body part will deal 1d8 necrotic damage per turn if held or in contact with an organic material. The body may phase through any solid material or container designated within the 5m of the spell's area without damaging it, in the position and location that it was placed at the casting of the spell, if possible.

This spell also effectively extends the time limit on raising the target from the dead, since days spent under the influence of this spell don't count against the time limit of spells such as raise dead.

This spell can only be dispelled by dispel magic cast at 6th level or higher.