Luthorien's first riddle

Hey guy, nice to have you here!
This is my first English riddle, I hope you'll like it...
...and maybe I'll create a second one lol

Rules are the usual ones:
find the solution to put in the box,
using clues hidden everywhere (page, title, pics, source, ...)

You could find help on Nordinho, there are many clever players!

Before you start your adventure, I would like to dedicate a thought to SwissMiss,
who tested most of these levels and has helped me a lot.

Good luck and have fun!! :)

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