Complex sentence: By his return in May 2000, The Undertaker had taken on a drastically different identity from before, as he abandoned the somber mortician-themed attires, his funeral dirge ring music, allusions to the supernatural, and the accompanying morbid theatrics.
Split into simpler sentences: By his return in May 2000, the Undertaker had taken on a drastically different identity from before. He abandoned the somber mortician-themed attires, his funeral dirge ring music, allusions to the supernatural, and the accompanying morbid theatrics.