You searched for death door
1. death door
Syntax: cast 'death door'
Death door is a self‑cast spell and one of the culminations of the
Necromancer's craft: mastery over death. While affected by this spell, if
the caster is slain, he is instead resurrected with half hitpoints and mana
in the hospital and loses only half the experience caused by death. Because
this spell takes great concentration, it expends half of the caster's
hitpoints and 500 mana. Upon death, a cooldown equal to your level*2 in
minutes is applied.