Complex sentence: Khalid is an associate of Hawkgirl and previously accompanied her on a mission in Egypt where he discovers the Helm of Nabu in a tomb, but is reluctant to use its power due to the increasing presence of Nabu's spirit affecting his thoughts and sanity.
Split into simpler sentences: Khalid is an associate of Hawkgirl and previously accompanied her on a mission in Egypt. He discovers the Helm of Nabu in a tomb, but is reluctant to use its power due to the increasing presence of Nabu's spirit affecting his thoughts and sanity.