Hi, I would like to ask you for a help with this fight. I know that problem is probably on my side, but I am unable to defeat the boss even on the lowest difficulty. A few times, I was able to knock it down, but usually only the main character survived and was easily killed by oracle's minions afterwards. Could you give me some tips? Which spells to use? Which potions to drink? And what about the arcane channels? Do they do something?

My group is on level 20 and looks like that:

Me - fighter, weapon master (sword)
Pallegrina - paladin
Xoti - priest
Eder - rogue (ranged weapons)
Aloth - wizard

Thanks a lot
Ondra