Quark
Fundamental Particle
I think it would be tough to conjure something that has that many properties and have them be usefully strong, again Kurapika is a great example, he similarly has multiple abilities based on conjuration but he had to make a pretty dire vow to make it happen and that probably still wouldn't have been sufficient without hisMary Sue TimeEmperor Time ability allowing him to use all nen types efficiently. You would have to look at some significant limitations in order to make them viable I think, perhaps like Kite you could have the abilities be activated randomly or controlled by some factor outside Loki's control?
Thanks for the feedback, I appreciate it! o/
As for properties, I was thinking of either of the cuffs changing into crystal-like structure, or just like metal. Was going more for she can shift the shape of this black mass that has metallic properties quickly to adapt to some weapon she needs.
Although I notice there is another more fundamental problem, I think she's far too young to handle that many forms, so probably best I find an alternative. Ideally I think something more subtle might be better for her (once again relating to speed), I just need to research more.