Originally Posted by darkoms
https://twitter.com/Blizzplanetcom/status/1287375606368411650/photo/1
Thiernax and Qadarin are who you meet in the Ardenweld. You can do a simple search to learn more about them, but there isn't much.
Tyrande did the ritual before we had any indication that Sylvanas was being juiced by death magic.
Blizzard would not go out of their way to say, in game, that the Night Warrior is a dangerous method to solve the Sylvanas problem. They especially wouldn't go out of their way twice by making a good part of Ardenweld's campaign following Shandris Feathermoon around in an attempt at reeling Tyrande in.