For the longest while, I've been noticing that during my Praxic Blade combos on a random hit (usually the strong heavy follow-up) that I would instantly recover a massive amount of HP, usually to full. I was so confused, especially because I was running an Arc Warlock build. I looked almost everywhere. I checked my subclass, which obviously didn't turn up any findings. I checked the Praxic Blade. Balanced Form on it only starts health recovery after rapid final blows, but I was getting full health bumps from rapid hits instead, so that didn't add up. And nothing on my armor either... Or so I thought. The Crook and Flail trait for Twofold Crown armor sets states that picking up an ammo brick heals you. I thought nothing of it, didn't even realize I was running that set at first for my Arc Warlock build. But I also had Kinetic Synthesis from the artifact on and realized that every time that mod activated from Praxic Blade damage, the brick would spawn on me and I'd instantly get the ammo returned to my Praxic Blade... which is the exact same time I would also get that health bump. Now I've realized just how powerful Twofold Crown sets are with Kinetic Synthesis and Praxic Blades. As long as you can do damage, you have an infinite loop of getting ammo back and healing, regardless of your class/subclass. This was especially useful when I decided to investigate the new Dungeon solo when it came out. Why did I do that? ...Don't ask. I was bored. But it made the second encounter trivial. I ended up beating the second encounter in 2 attempts by myself while still learning the Dungeon mostly from scratch, save for seeing a little bit of the final encounter on YouTube. Also, I didn't clear the whole Dungeon solo since the last encounter was kinda tedious for me, but I can definitely tell it's more doable than the previous two. But yeah. If you like running around with the Praxic Blade a lot, give this combo a try. You can continue to build around it too.