The stage of Mortality is when you are in your Original Form. This would be your original character. You go about normal life in your mortal stage until you die.
The Reincarnation Edit
The stage of Reincarnation is your reborn self, made into a new feline, canine or big cat. In this stage, you have no memories of your past life, and have a chance to start over.
The New Star Edit
The stage of New Star is your spirit form. You remain as a spirit, in either your Reincarnation self or Mortality self. You watch over the pack, only seen by the best Gatherers and sometimes the Masters.