Oh. I forgot that Vahagn's debuff got upgraded at Lvl 55. My mistake there... now to play the long game and slowly (and hopefully) pick up more pieces for a good Fire team.
Sweet mercy though, that is a CRAP ton of valuable materials that would need to be burned up to get even a single T4 Soul. If some of those items aren't made a whole lot more accessible, this is going to be beyond rough to even attempt.