The Heroes Round Table

Hello all. I have a question. On the Trials of Nikolai mission, after gathering the 8 lost souls and removing the fire walls. What are the ingredients that are required to cast the spell behind where the walls were? Also, for one of the pillars in the underworld it seems like I am required to bring ...

Please help! I am stuck on the mission "Trials of Nikolai". I have activated the first two pillars but the third one requiring me to defeat the fire dragons has me stumped. I have found the fire dragons on their little secluded island thing but the game will not let me pass through the gar...