Each major realm added a new part to the tribulations. Gold Tier in the World Realm was the first so it was the shortest and weakest. Elements, physiques, and maybe a few more were common.
True Lords and progenitors were damned rare but they too could happen as Lind was living proof of.
The Diamond Tier was transformative. It was beginning to shed the mortal coil for the skies and thus a fundamental shift was needed to prepare but not a large difference from the Gold Tier.
The Sky Realm Ascension tribulation was the first true nightmare for cultivators. It was harsh, unforgiving, and tested every aspect of them until that point in their lives. Success was to fly off the surface of the mortal world while failure was often met with obliteration.
The Heaven Realm was a transition but it laid the foundation by filling in the missing elements and other aspects to prepare for the next major step.
