The Stockwood Scrolls
The Summer Queen is one of the most powerful Archfey of the Feywild. She hosts the grand Fey Court known as the Court of Stars, as well as her own Summer Court, in her palace of Senaliesse which is built atop enormous trees. Of all the Archfey, Tiandra commands the largest following of other fey lords.
Tiandra is an ally of Rellevar Danuvien, the Frost Sprite King. According to Hyrsam, the two and a consortium of other powerful fey are planning to restore the Dracorage Mythal, and diminish the power of dragons in the mortal world once more by sending them into periodic rages.