now i'm thinking this was a spell that was left in the module during the last update that isn't completed yet but anyway i'll put this here just in case
upon my Sorceress making level 7 i obtained a new 3rd level spell, looking through the list i noticed Sonic Blast, reading it, it sounded really good so thinking it was one of the spells put in last update (i realise now it wasn't documented in the update) i decided to pick it, the knockdown effect works wonderfully for the spell, but the damage portion doesn't seem to work