This counts as a longhouse quest.
Get a figurine of a sphinx from the empty sarcophagus (Inside the Tomb of Amenhotep, Indus Nile Valley - Push Button, Get all cache).
In Ancient Egypt:
free Nedjam from the cage
Give Nedjam the figurine.
Return to the Nile Valley in Indus.
put the figurine on the Isis Altar
get essence from the altar
give the figurine to the ghost of Nedjam
you receive +8 per