I don’t think you can even get any crystals from the factions. The only thing you are able to get from them for the praxic blade are mods from the weekly shipments and only from the biggest one. But i could be wrong 🤷‍♂️ Other than that the colored crystals from the planets seem to drop but at a very low chance. While I was lucky and got all of them except for the cyan one the guys I play with unfortunately weren’t as fortunate. Keep it up, you’ll get them eventually. Good luck out there.