After Death, and reviving, a Soul Healer can restore your lost Experience, and remove any negative effects from your recent rebirth, for a price. The price is relative to the amount of lost XP being restored.
You will find a Soul Healer standing next to each Obelisk, which is convenient as that is where you will appear after reviving.
This is a list of Soul Healers. Once a mob page is made, remove them from this list.