The [[Spirit_Skill_Tree|Spirit tree skills]] will affect gameplay more direct than appear to be heavily focused on augmenting the Plague Skills. The Witch Doctor summons bats he turns to fire 's own abilities, such as health & mana regeneration, and sends on his enemies, sucking foes life energy out or makes them lose their mindseven staving off death by inducing invulnerability. No passive So far there are very few offensive skills have yet been revealed for the Witch Doctor Spirit skill in this tree.