Given scene/plot descriptions from movies or TV shows, and given a specific question about the scene, summarize the question into a title

[EX Q]: In the finale of the first season of the revamped Dr. Who, we see Rose absorb the Time Vortex of the TARDIS and uses this power to not only evaporate the Daleks, but revive Jack.  Due to this process, Jack becomes immortal.  The question is, what was it about this resurrection that allowed him to be immortal rather than just giving him another chance at life?
[EX A]: How did Rose make Jack immortal?

[EX Q]: In Precious (2009), Weiss goes to get a cold drink for Precious.  At that time Precious steals some file from Weiss's files & puts it in her handbang.    Why did she steal that file? What is in it?
[EX A]: Why Precious stole the file from Weiss's files?

[EX Q]: During the Guardians of the Galaxy's visit at the Collector's he opens the mysterious orb and reveals the true nature of its content, being one of the Infinity Stones. But then suddenly his servant approaches the stone as in trance and touches it (ultimately destroying herself and the Collector's den in the wake of this), uttering something like:    I'll not be your slave anymore!   I wonder though, what dragged her that strongly towards the Infinity Stone? Was she simply hungry for its supposed power, being suppressed all the time (it's established earlier that the Collector isn't particularly nice to his servants) or is there anything more to this, like some kind of unnatural attraction emerging from the Infinity Stone itself (similar to the One Ring maybe)?
[EX A]:
What dragged the Collector's servant towards the Infinity Stone?