When you get to Lunarfall Inn(A)/Frostwall Tavern(H) level 2, Lilian Voss are likely to appear in your hotel, then you need to complete the mission she gave you to gain toy: Lilian's Warning Sign.
1.You will get Lilian's Warning Sign.
2.You need to provide your account.
3.Your character needs to be lvl 50.
4.Estimated time: 1-15days.