Though interesting, it seems to be almost un-usable. What comes to mind first is to help against poison or aid one's gravity-pulled monster, but it'd be difficult to move around your creatures outside the use of Rewind, seeing that both spells, if not chaos-ed onto them, is due to a direct spell or ability. Furthermore, when poisoning builds or, especially in the case of voodoo, when the attacks get too strong, the healing just won't be able to catch up?
