Patron of War (achievement)

Patron of War is a Feats of Strength promotion achievement that was rewarded for linking one's Battle.Net account to their Twitch account and watching one of the following events:
 * 2016 European Arena Regional Championships — September 30, 2016 to October 2, 2016
 * 2016 American Regional Championships — October 8-9, 2016

It was not available in-game until both events had concluded. However, players reported receiving the title and achievement after the European regional had ended.