Azareck's Call to Oblivion

This spell temporally cuts a being off from the river of souls and veils them from the sight of he gods. The target must make a Charisma saving throw or be affected by the curse, on a fail the spell fails and the creature is immune for 1 day. While affected by the curse the caster always knows where the target is no matter where they are. If the curse effects the creature upon death, the creature is completely removed from existence and doesn't pass on to the next plane. No resurrection magic can bring them back and they cannot be communicated with. The target of the spell knows if it has been effected and must make a Charisma saving throw or be frightened and vulnerable to Necrotic damage for the duration, on a success the frightened condition and vulnerability is negated but they're still cut off. 

The target repeats the saving throw every hour at disadvantage to reconnect them self. The spell can only be dispelled early by the caster as a bonus action, if the caster loses concentration, or by a Wish spell.

The target can only be resurrected by the intervention of a deity more powerful than the caster of the curse or by a Wish spell by a caster that makes it so that they can never cast Wish again.