Agashem

Agashem appears to be a leader among the Grimtotem tribe of tauren, as he or she is the one who orders them to destroy the Shady Rest Inn.

You find this out by reading the Grimtotem Battle Plan.

However, Agashem could simply be an near-anagram of "Magasha," which is suspiciously close to "Magatha," the leader of the Grimtotem.