It's my only concern when modelling something like that, fine whenever you're playing against that particular race, but knowing my ocd tendencies, i'd have to do a different version for each race. It may be worth trying to do it so you can just swap the body the succubus is attached to, almost as though the spear just slots into the body?
As regards names, i set out a few ways for coming up with them here but specifically in relation to your force, you could look at something related to the name of your cult? It's a bit of a cliche but the broken sword from Lord of the Rings was called Narsil, or there's a manga series called Bureiku Bureido, which means broke blade, or there's a book called the complete bladesmith by a guy called Hrisoulas, or Chromium is what causes steel to crack during forging. They're all options, but my personal favourite method is the translator - Sarkya means shatter in Finnish.
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