At a relatively early point in the main story I'm meeting a Cardinal, and it didn't go well for me. I did see one a bit earlier on Eos, but I assumed I had entered a bit too high-level area accidentally and reloaded.
It seems that I can only target the Cardinal's Orb, and even then once I destroyed it, it just appears again shortly after. I'm out of ammo, and the orb is still there.
Are there any special rules about the Cardinal and the Cardinal's Orb? Can I prevent it from respawning/regenerating? And how do I destroy bot it and the Cardinal?