As the final Hearthstone expansion of the year is set to be released next Tuesday, the development team surprised players one more time on Thursday afternoon with a special announcement via a company blog post. A little more than two weeks after the Hearthstone Battlegrounds team implemented four new heroes into the game mode, they're back at it again with three more. Joining the pool of selectable characters are Sylvanas Windrunner, Edwin Vancleef and Arch-Villain Rafaam. Additionally, Millificent Manastorm and Lich Baz'hial are returning after a brief absence. To keep the number of heroes at 24, Patches the Pirate, Bartendotron, Pyramad, Professor Putricide, and Trade Prince Gallywix are rotating out for the time being.