
- Intelligence score increases by 1.
- If you have a negative damage modifier on a Blowgun, that negative modifier will be turned into points of damage into points of healing.
- Any improvised ammunition that can fit in the Blowgun, at the DM's discretion, can be fired with the proficiency bonus. Further, the ammo would carry the same effect as the regular blowgun needles.

What?
I completely forgot I made this. . . I think what I was trying to do was make a healing method through Blowguns, and encourage making low dex builds, but it sounds awkward reading it back. lol
We've all been there, at least you wanted to make something fun and viable.
Making a feat for healing through acupuncture is an interesting idea, but the way it does it is extremely weird.
Doing something along the lines of laying hands (paladin) but with blow dart needles ?