Talk:Shenshangxian/@comment-24922135-20180927132626/@comment-5101200-20180927174540

Yes and no. The planet does produce a gas that is toxic to them and can kill them, but it's not overbearing to the point where the species couldn't have developed at all. Assuming their technology doesn't fail, they don't really have to worry about it much at all since they collect it as it gets produced and then refine it to use for their powers.