Raised from the dead as a being of undeath, you count as an undead creature for all spells and abilities that affect the undead. You are immune to disease. You do not need to eat or breathe, but you can ingest food and drink if you wish. Instead of sleeping, you enter an inactive state for 4 hours each day. You do not dream in this state; you are fully aware of your surround­ings and notice approaching enemies and other events as normal. 

You do not age. Given time, the necromantic energies that sustain you will heal most wounds you take at approximately the same rate as a mortal, and your hit dice function as normal.

Your Constitution score increases by 1.