Acidic heal

By pouring acid onto yourself, your skin uses magic to secrete a healing agent, and the two combine to make a liquid that heals all that it touches by burning away the wound. This spell damages you with 1d4 acid damage and heals your target hit points equal to twice the amount of hit points you were damaged. At 5th level use a d6 instead of a d4, at 10th level use a d10, and use 2d8 at 15th level.