Years in the cage went differently than years in Heaven or even on Earth. The first time Lucifer was in the cage he was alone. He had never been so utterly alone before. I don't own supernatural or Lucifer.

Master/ Time Lady OC: "Two bitter enemies, only one chance to escape. Tejana, the Doctor's daughter, born from an arranged marriage before her father ever left Gallifrey. And the Master, Gallifrey's most infamous son. Both of them, stranded on Gallifrey on the Last Day of the Time War. So what happens when they need each other to escape from the doom of the Moment?" Set Post-EoT.