You should....

—I think I should call one old friend of mine to deal with this case...

Necromancy..... **open her mouth in surprise **

—These are some of various materials used in necromancy and other dark purposes...

What do they do? Do they give powers?

—Just by the look, I could say that someone is playing a dangerous game.

And what are they? Dangerous?

—Those are some things I found in a park.

Nicolas.... What are those????