Some wizards talk parseltongue, some are metamorphmagus, and a few lucky ones are time controllers.
A time controller has the ability to set time on a break and enjoy the freedom of space and time, without spending any. The time controller community is small, and has a large set of rules. One of them is to not come back to Earth before everyone you used to know is gone. Considering most of the time controllers have children while alive, they do not live that often. However, a few of them decided to come back as often as possible to live fully before their powers fade. A well known time controller would be Professor Dumbledore, but as the rule says, no one should know he is a time controller. One of his best friends is Malicia Sweedypoel, lastly dead for treason after becoming one of the most dangerous Death Eater of the history.
Once dead, the time controllers are gathered in a cosy room where they can observe Earth while waiting for their next birth. Pretty mysterious wizards they are. It's May 2nd, 1998 - and the Battle of Hogwarts is almost done. Malicia is sitting in her couch watching attentively the Battle, the majority of the Time Controllers already asked her who she is internally cheering for, the Bad or the Good? Surprisingly, all night long, she has been answering calmly she was hoping Hogwarts would win, and that it was time for Voldemort to rot in hell. Malicia wasn't the most appreciated Time Controller last generation, but she acknowledges that she was wrong, self-centred and crazily involved with crazy people. Albus takes a seat next to her, looking worried.
"Albus, did you send the boy back?"
"Yes I did, and I know that you are thinking this is wrong, but we both know it's time for this evil to stop"
Malicia nods, and feels extremely jealous that Harry was given a second chance and sent back for a few more years. She was a Time Controller, one of the oldest ones, and she was suspended for at least 5 more generations as a punishment for her unethical behaviour. Time Controllers are supposed to bring order back, let peace rule a delightful life and help humanity to survive. The contrary of what she did.
"Albus, so many people died -"
"You know I'm not going to send you back without a good excuse"
"I could save them! I am strong, and I want to do good what I did bad before. Bring some happiness in the lives I've taken."
"Malicia, who are you talking about?"
"Draco, he could be a sweetheart and you alive. Fred and George could be happily forever tricking and joking around. Luna, Tonks, Lupin, Black... All of them, one distraction and the situation is different!"
"Honey, some things would change, but I actually hope not everything. I am in peace with my own death."
"Albus, even if it means I won't live ever again, let me at least do things better."
While Malicia is one of the oldest time controller, Albus was the most powerful one. And breaking the rules was something only he could do.
Malicia was still watching the Battle in silence knowing she wouldn't convince Albus. After all, she plotted the death of his beloved ones and there wasn't much she could do to earn respect back. All of a sudden, the Battle was making more noise, she could see what was happening better, she was falling. Falling back to Earth. He didn't trust her, but she knew that this was her last chance to make things right with her best friend, one task: save them all. By the time her body touches the cold ground, what seems to be an explosion propels her far away. The explosion is not due to the Battle, but due to her Birth.
