"You come with questions, seeking forbidden power, but what do you know of shadow's price? How can you understand what only I have endured, I who was born into darkness and must bear its weight for the rest of my days. You see, I remember what it was like before I become what you see before you. I remember Life, living, vigor, and vitality. And I mourn their loss." -Loss, revenant blackguard
When your PC die, its soul failed to pass on to the other side. You have returned to your body, but now you are considered a revenant, a being caught on the buffer between the world of the living and the dead.
Your dead PC is now alive again, sort of. You retain all of your story awards, equipment, or other aspects of the character. Any benefits of your prior race are lost, although you still count as that race for meeting prerequisites. You must remake your character as the same class, but with revenant as your race, including racial powers and ability score modifiers. You retain previous aspects of your character, such as the equipment and story awards. In addition, your spirit maintains a connection to the Grey (a plane of shadow that surrounds the prime plane that contains Athas). You gain the feat Born of Shadow as a bonus feat.
In addition, your dead PC finds that they are visited periodically by undead spirits. These spirits are not harmful. In fact, one of them provides advice (which you may be wanted or unwanted, depending on your role-playing). The advice of the spirit (who does not reveal his or her past) manifests as a benefit. You may choose one of the feats as a bonus feat: Binding Initiate [Multiclass Warlock], Arcane Initiate [Multiclass Wizard]. You as a player gain access to the Warlock class (Undead or Undying).
Revenant's heritage give them distinct advantages and disadvantages on Athas.
Ability Score Increases: Revenant's receive +2 to Dexterity and +2 to Charisma or +2 to Constitution.
Undead: You are considered an undead creature for the purpose of effects that relate to the undead keyword. You are also considered a living creature.
Past life: You are also considered a member of that race for the purpose of meeting prerequisites, such as feats.
Healing: Revenants cannot heal through magical or non-magical means. Only through resting and spending hit die can they recover hit points.
Unnatural Vitality: When you drop to 0 hit points or fewer and are subjected to the dying condition, you can choose to be dazed, instead of falling unconscious. You make death saving throws as normal, and if you fail one, you fall unconscious instead of being dazed.
Dark Reaping: You have the dark reaping power.
When creating a revenant character, consider these points. You aren't like other mortals. Revenants do not live and reproduce as mortal races do. Indeed, they are not a true race at all. Each revenant arises in the world only by the will of the Grey (or some other agency of death).
You have a purpose. This purpose might be obvious to a revenant, or it might be a mystery the revenant has to unravel before it can rest. A revenant might doggedly pursue this end or rebel against thai fate and try to avoid destiny. The purpose could change, revealing greater goals as steps toward the ultimate end are achieved. Much depends on who brought the revenant back. If the Grey commanded the soul's return the revenant might play an important part in the future. The Grey might send a soul to bring someone or something to the death it has avoided, and the revenant might have been chosen because of past ties to the target. Your memories are fragmented. Revenants usually remember only snippets of their former lives-just enough to push them toward the purpose for which some power raised them. Many don't even remember their names and thus take on new ones fitting their disposition. Memories come in dreams and flashes of insight, often provoked by the revenant's experiences. Brushing shoulders accidentally in the market could call to mind the touched person as a lifelong friend. The sight of a pale hand moving through lustrous hair could remind the revenant's heart of a lost love. Each remembrance has its purpose: reward, punishment, bait, or aid. All are true. but the power that raised the revenant can sometimes control which truths the revenant recalls. You are recognizable, but unknown . The rarity of revenants results in few having much knowledge about them. Experts in religion or those who encountered revenants in the past might know more about them, but for most people revenants are strange and alien, spoken of in whispered rumors around low burning fires in the deepest hours of the night.
Born of Shadow: Your soul is forever bound to the twilight of the Grey. Your shadow is slightly deeper than seems normal for the ambient light around you, and your body and mind are strengthened when you are shrouded in gloom. Benefit: You gain a +1 bonus to saving throws while you are in dim light or darkness.
Dark Reaping: Reaction - A creature within 5 squares of you drops to 0 hit points. Effect - One creature of your choice that you hit with an attack before the end of your next turn takes extra necrotic damage equal to 1d8 + your Constitution modifier.