I've always been fascinated by this skill for some strange reason, so I'd like to get as much use out of it as possible.
There are many effects that reduce a target's damage done: Low Slash, Dark Shades, the concussion status effect, etc. Using these in conjunction with Poison Mist, you can possibly reduce your damage taken by as much as 90%. Is it effective? Probably not as much as I'd like to think, but worth trying in pinch situations.
More interesting to me, however, is poison damage. I love the poison damage that can be dealt with bows, the one Snipe morph even having a poison status effect that can be placed on an enemy. So far, I haven't been able to proc a similar status effect from continued uses of Poison Mist like I can the burning effect from using fire spells. Are there any set bonuses that increase poison damage dealt/the chance to proc this effect? Does the effect exist outside of Snipe?
Of course, Poison Mist is most likely seen as a useless skill, but let's try to make the most of it here. What are our options? Synergies, boons, etc.