Also under Hom-Dai curse your soul is not allowed to crossover to the underworld, hence it is ideal for resurrection (the plagues curse is further put on the subject so as to discourage anyone from resurrecting him). But at the end of first movie, by reading from the
book of Amun Ra, Rick and Evie had sent his soul to the underworld (he died like a regular mortal). So it involves a much more ...