Source: Races of Faerûn
You can influence a large number of orcs.
Prerequisite: Orc, base Leadership score of 10+
Benefit: You are seen as a king among kings and a natural leader of orcs. You gain a +2 bonus on all Diplomacy and Intimidate checks made to influence orcs. Additionally, as long as you are visibly leading them, all your followers gain a +1 morale bonus on their attack rolls and Will saving throws.