What is the trigger for the first Arena battle? I want to clear the Sewers using Necromancy, but I don't want to enter the Arena unprepared. （most Necromancy can't be used publicly，and touch not so strong）
You need to meet Bernie (the necromancer plotline), witness Klaus being turned to stone, and do the whole Asara plotline where Erika gets cursed and Isabella tries hitting on you.
