It's good to have healing abilities that can help you whenever you screwed up. Mine can only fix inanimate objects, not living things. (QwQ)
Tho he can try to create a device/tool that could heal you instead. But that'll take some time to work ofc. ('ÚwÙ) So from this point, you can already see that I've nerfed him by lowering his capabilities on defence so that he'll not be too op for the story.