I got one yesterday and I wonder what I can do with it? Someone knows?

There's a bunch of different pieces dropped as loot for specific challengers at a set number of wins.

They're component pieces to make actual battle scrolls at the Genetech Lab.

You can use subetalodge to look up which piece you got and o see which scroll it makes and the other items needed.

i have all of them here - tattered scroll combos (don't post on that topic though, it's too old!)

Thank you both so much. This infos are very helpful. I was always wondering, what pieces or items I may need to make anything with it.

glad i could help, and thank you for the gift :)