Let’s say I have a creature in the graveyard. I then cast Postmortem Lunge, which reads
Return target creature card with converted mana cost X from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step.
Then, after bring the creature back, I sacrifice it, or it dies some other way. At the end of my turn would Postmortem Lunge exile it out of my graveyard?