Restless Spirits

Prerequisites: 16 or higher Wisdom

You are in touch with the spirits. If you drop to 0 hit points and don't die outright, your body becomes possessed by one of the spirits you have kept contact with. You stand up and fight with vigor and zeal as never seen before. Whenever you hit a creature with a melee attack or a necromancy spell the opponent has to make a Con Save against your Spell Save DC. On a fail you regain hit points equal to half the damage the attack did, and on a success you don't regain any hit points. The spirit can only attack, and attacks whomever the user saw as an enemy before dropping to 0 hit points. In addition your speed is halved, as the spirit is adjusting to the new body, and you gain advantage to Charisma (Intimidation) checks. You still must make death saving throws, and you suffer the normal effects of taking damage while at 0 hit points, unless you are healed or stabilized. Once you use this feature, you cannot do so until you finish a long rest.