From wow.incgamers.com
The Thunderlord Clan was an
Orc clan that existed for a very long time on
Draenor. It remained behind during the
First and
Second Wars. However, when
Ner'zhul wanted to open new portals, they immediately volunteered. Unfortunately their clan leader decided to attempt to head into
Azeroth and accomplish what the Second War did not. Ner'Zhul did not approve of this, and he slaughtered the entire Clan.
Orgrim Doomhammer managed to rise in the ranks of the Thunderlord Clan as well as the Blackrock Clan to Cheiftain. The two clans had close connections, but this event was still quite unusual.
