1 Rescue shadownheart from nortaloid to get cube
2. Grab it in the cutscene if you rescued her
3. Recruit her at the door if you missed her in ship
4. Recruit her in the grove
5. She follows you in secret and waves cube around
Apparently there are loads more larian did a whole video about it even swen looked depressed about the resorce loss
There is 5 off top of my head
