You remember me? [1]
Elven tear.
Some might call it a miracle drug. The item was something that the elves were highly famous for. It could practically heal all diseases regardless of their seriousness.
It could even bring back someone from the brink of death. That was how effective the elven tears were.
But of course, just like the name suggested, it could only be created by the elves, and even then, it wasn't like they could easily make them.
In fact, it was quite hard for them to make. Perhaps in the past, back when they still had the world tree at their disposal, creating miraculous elixirs like the elven tears might have been easy. But that was then, and this was now.
Times had changed, and each elven tear was incredibly valuable.
So valuable that it had created great havoc in the human domain once upon a time when someone managed to get their hands on one elven tear and decided to sell it.