Rallying Speaker A5E
When you spend 10 minutes speaking inspirationally, you can choose up to 6 friendly creatures (including yourself) within 30 feet that can hear and understand you. Each creature gains temporary hit points equal to your level + your Charisma modifier. A creature can’t gain temporary hit points from this feat again until it has finished a rest.
Source: Adventurer's Guide (EN Publishing) · License: Creative Commons Attribution 4.0 / OPEN GAME LICENSE Version 1.0a details