Uhm, did you spoke with the Queen? Thats what should trigger the quest, she gives you the mision to complete a task there. And abou the elf ears, you get them by killing enemies in the twilight
I tried to talk with her after i fully completed the corruption bar, after i maxed the corruption in dock, trade and noble district. When i talk with gob he say that city is ready to fall and now i'm Queen's favorite and yet when i talk with her she tell to go back to lumis and continue the corruption
