Prerequisite: Subclass Level 75; Path of a Noblesse, Possessor of a Precious Soul – 1, 2 & 3
Speak to Caradine in Goddard. Her master wants to talk to you. She will teleport you to her when you are ready. Go there right away!
You'll be teleported to the Coliseum next to the Lady of the Lake. Talk to her and you'll find out that she's actually the Goddess Eva! She asks for your eternal support in this strife-ridden world. If you pledge it, you become a Noblesse and receive the Noblesse Tiara as an accessory. Congratulations! You are now a Noblesse (yes it works on both main classes and subclasses).