Does the quality of the reward relics depend on what I kill or does it just randomly pick from the entire drop pool and then also randomly decide the LP it gets?
In other words, if I do this in the campaign, does my chance to have LP decrease significantly compared to doing it in high corruption?
It doesn’t seem to care about area level because campaign prophecies can drop high level stuff. My guess is the reward is based on character level only.
If you look at Last Epoch Item Database you can see the level rquirements when items start rolling with LP. Yes there is no such info ingame. Yes usig 3rd party sites suxx and whatnot. In the DB you can checkout everything you need to your hearts content.
Steelmage tested it on stream and determined campaign prophecies are actually great because they can drop high level stuff and are super easy. He used it to farm T7 exalts that he needed.