That was because what she had said was indeed taboo for the elves.
The buff magic that she was referring to was the magic that drew on the power of the Tree of Life, the representation of the Goddess of Life that the elves believed in.
To use this magic, they would have to use the leaves of the Tree of Life that they carried around with them along with their magic.
But the leaves of the Tree of Life were very special items.
These were representations of their goddess, so it could even be considered sacred magic.
This was not a kind of magic that the elves used easily on themselves, let alone on a human.
In fact, there had never been a single case of this buff magic being used on a human before…so while there wasn't exactly a law against it, it was definitely not something that the elves would ever think of doing.
The problem was that this was what Moon was commanding them to do.
