this is something Hoid would do so he could have even more abilities, though we should try to ask Brandon or Peter if it is possible to store the breaths in lerasium and if it would would work if he burned though [ spoiler ] brandon said something along the lines that Nightblood was able to work as something like an honorblade i can not find the quote it is in some Q and A so 2 different types of investure could work together and maybe change. [ /spoiler ]