Search for and destroy Oberon's root nodes - part 3 Overlord Guide

Come back to the main room now and take the door in the middle (#1). Now you know that the Mother Goddess figure is missing and you have to find it - but not just yet. Take the stairs up and get the next spell. You'll also find the last node next to it (#2) - finally! Once you're done with the nodes you'll be able to kill this Oberon. But of course you have to fight his defenders first - trolls again - so go ahead!