I finished serpent temple but am not sure I got everything I was supposed to.

Can anyone tell me what all you are supposed to get from the serpent temple?

The only thing that I believe is mandatory for you to continue on with the plot, is the Mask of Death or whatever it is, that Elyssa drops when you kill her. I got it, and went back to the oracles, only to find them gone.. Not sure exactly what to do next, except continue on to Shurugon castle.. I'll see if they're back after I finish that.

Zandramas

All you need is the mask of death, as you said. You need to to kill the demon who has traped D'Soto's soul. So keep it safe! You will never see the oracles again...or need to.