Calianna’s Symphony

You conjure a band of spectral instruments which float harmlessly around you, playing epic music of your preference which hardens your and your allies’ resolves. 
Any creature you choose (including you) that starts its turn within 30 feet of you gains Temporary HP equal to your spell casting ability modifier plus half of your level rounded down. Additionally, you and any allies within 30 feet of you are immune to the Charmed and Frightened conditions, and have advantage on Dexterity saving throws against effects that they can see, such as traps or spells, so long as they are not blinded, deafened, or incapacitated.