Quote Originally Posted by danielxcutter View Post
Just to clarify, how do those effects work? Are they separate rider effects on the sonic attack?
Yeah, they are. When you do your sonic attack, you can layer them on top of it. You can layer multiple ones on the same attack - so an ECL 15 forestfolk (X5/siren 10) can start the wncounter with a cone that has it's normal effect - and the effects of crushing despair, phantasmal killer, feeblemind, enervation (but allows fort save), flesh to stone, and power word: kill. The firs and last effects would be 1/day, the rest are 10/day. The DC for all of them is 22+cha, which the class has increased by 5 (inherent).

It's all SU (so doesn't work in an AMF). On the other hand, the songs affect "all creatures within range of the siren's sonic attack", so from ECL 12 or so you don't care as much about immunity to mind-affecting.