You raise the horn used in the casting and blow it, its sound enchanted by the spell to bolster you and your allies. You and each creature of your choice within 30 feet of you gains for the duration a bonus to their attack rolls, ability checks, and saving throws equal to your spellcasting ability modifier (minimum of 1). Additionally, each of those creatures gain 3d8 temporary hit points and any effect that is causing them to be frightened ends for them.

At Higher Levels. When you cast this spell with a spell slot of 6th level or higher, affected creatures gain an additional 1d8 temporary hit points per level of spell slot above 5th. If you cast this spell with a spell slot of 8th level or higher, the area increases to 60 feet.