Life-Cycles, Incarnations and Regeneration by SamSational Madden Rejected
Life-Cycles : Every life-cycle grants you thirteen incarnations and twelve regenerations. To get a life-cycle, you must drink an elixir, only found on either Gallifrey or Karn.
Incarnations : A special skin-editor that allows you to change your appearance, either randomly or manually, allowing you to have different "personas" every time you regenerate.
Regeneration : Instead of dying and re-spawning, and if you have drunk an elixir (see "Life-Cycles" at the top), you regenerate. You can do this, as stated previously, twelve times (granting you thirteen different incarnations for every life-cycle).