The figures are suspect on this one, since they were heard to read from our notes. The function is clear though, and in fact this skill has been seen in use in gameplay movies. It's a simple war cry-like skill that knocks back and stuns nearby monsters. It would presumably not work on bosses and other larger enemies, but that's not clear yet. It As of June it was free said to use in the BlizzCon demo build, have no cost to Fury reserves but seems likely would be subject to cost some Fury in a cooldown[http://www.diii.net/blog/comments/bashiok-on-the final game-barbarians-fury/].