For the roots of the divide between the few remaining High Elves and the Blood Elves, we must go back to two figures -- Kael'thas Sunstrider and Garithos, self-proclaimed Grand Marshal of the few remaining Alliance forces in the region after Prince Arthas Menethil's betrayal of his father and his kingdom to the Scourge.
The skies split open.
We looked at her life, her death, and her rise to become the Banshee Queen.
Kings are born like anyone else.
When last we looked at Sylvanas Windrunner, she had died at the hands of Arthas Menethil, servant of the Lich King.
The real stars of Heroes of the Storm are all the different characters from the varied Blizzard franchises you get to play in one hectic arena.
Although she's not necessarily heavily involved with Draenor, Jaina Proudmoore, leader of the Kirin Tor, has made her presence known. And her current behavior is slightly confusing to those that have read the novel War Crimes, but not necessarily out of character.