The Um’Gra Tribe is reckless. They fear nothing, and that’s both their greatest asset and their biggest weakness. This Tribe will tackle any challenge without concerning themselves with trivialities, like the likelihood of death. The Um’Gra are never happier than when they’re covered in blood, hacking away at whatever meat was foolish enough to face them on the field of battle.
For full details on the Um’Gra tribe check out the official article here.