Just thinking about new charms as our ST was SUPER generous with xp and we're nearing the Endgame of one 2.5 series and i will be helping ST for a brand new on. I'm like 88% sure this can be adapted somehow to 3rd ed... but here it is:

E5 performance 5 zenith musical charm. 10m 1 wp, instant reflexive. The priest wistles one of, but the most feared sound in creation. The brown note. As this is not a MI of any mental dvs and pefects have no effect. And as it is not an actual physical attack, the same applies. An opponent struck by this must make a valor roll with in internal penalty of 2 and a threshold of two to continue his fight.... but with what dignity?