Stirring Song of Baator is a heroic tier feat.[PHRT:26]
Benefit: When you hit an enemy with a bard attack that has the fire or fear keyword, one ally who can see you gains temporary hit points equal to 1 + your Charisma modifier. The temporary hit points increase to 3 + your Charisma modifier at 11th level and 5 + your Charisma modifier at 21st level.