Sacrifice Over Excess
From RoR Wiki
Instructions: Order & Destruction
- Interact with the 'Second Journal of Lliean' at 14.6k 8.2k in Dragonwake.
- It will make spawn 'Jezebeth', a level 39 Daemonette of Slaanesh. Kill her for a pocket item 'Icy Heart'.
- Equip it for the unlock.
- Once the unlock triggered, you can claim the jewel buying it from the correct merchant in Library (Order) / Lyceum (Destruction).