What does this elvish language come from?

Warcraft is a mixture of many myths, doctrines and beliefs. ....

Like games, comics and novels, as long as you have a blueprint as the cornerstone, you can imagine it at will in this book. For example, Loki, the Vulcan in Norwegian mythology, was supposed to be a rebel, but he became the protagonist in the cartoon (refer to anime detective Loki), because this carrier is a fictional space. So no matter what the blueprint is, the process will always deviate from the facts.