I happened to have a few relics with the parts to nova prime, I got all of them but the systems. my friend who had one single relic containing the systems ran a rift with me and he got the systems. Nova prime is vaulted so the odds of me actually getting all the parts I needed from the relics is loving amazing, I'm building it right now. I just forma'd my Nidus so I'm leveling him up again before it finishes