Way of Dark
Soul Harvest - The death of any player or pet on the battlefield heals you for 1 heart.
Best paired with Summon Undead or Summon Skeleton, Soul Harvest means a constant supply of healing as long as you have the time to keep summoning your pets. Obviously, this class works better in a team scenario. In a free-for-all match, the Soul Lord may find difficulty in escaping the attention of others.
Leads to: Sadist or Eldritch