http://l2wiki.com/to_the_seed_of_hellfire you need to make this quest first. then do the quest to get the item to enter normal tauti (or if you have it np), kill tauti, end day of liberation quest (http://l2wiki.com/day_of_liberation). after that you will be able to take epic tauti quest. nevertheless you can still kill both tauti's without making day of liberation or an audience with tauti quests (http://l2wiki.com/an_audience_with_tauti).
