nijineko
Explorer
depends on the campaign setting specifics. greyhawk has the pact primeval as the major historical universe shaping event defining how things work; forgotten realms, dark sun, eberron, planescape, spelljammer, and so on each have their own subset or variant or departure from the greyhawk concept(s). in most cases, they are too busy playing lobster tank, excepting the occasional foray into the prime to impinge, upon mortals.
for example, there are only a handful of beings in the greyhawk setting that are defined as super ancient and as predating the current setup. the rest are more recent ascensions. power levels are not static (iuz and zagyg, cases in point) and fluctuate both up and down over time.
the books in question even state that they were made without other sourcebooks (eg: deities and demigods not using epic rules) and suggest modifying the listed stats to take advantage of other appropriate sourcebooks.
so to recap and answer the post above mine, and the op; no - it didn't take eons to come into power (in most cases) the stats listed don't reflect what they really should be (that's another issue entirely, but even the designers said as much *rolls eyes* ), and power levels are not static, going both up and down over time.
which also directly implies that the pcs have a shot at "phenomenal cosmic power", if they could figure out how to pull it off. (there are more examples than just iuz and zagyg... zuoken, cuthbert, vecna, acererak, and many more.) it's up to the dm to make it tough on the pcs. after all, no one is a slave to the books, the books are suggested guidelines, alteration and creation is encouraged, etc.. just notify your players in a general non-plot revealing way what you are changing, ahead of time, so they don't have legitimate blind-siding complaints.
for example, there are only a handful of beings in the greyhawk setting that are defined as super ancient and as predating the current setup. the rest are more recent ascensions. power levels are not static (iuz and zagyg, cases in point) and fluctuate both up and down over time.
the books in question even state that they were made without other sourcebooks (eg: deities and demigods not using epic rules) and suggest modifying the listed stats to take advantage of other appropriate sourcebooks.
so to recap and answer the post above mine, and the op; no - it didn't take eons to come into power (in most cases) the stats listed don't reflect what they really should be (that's another issue entirely, but even the designers said as much *rolls eyes* ), and power levels are not static, going both up and down over time.
which also directly implies that the pcs have a shot at "phenomenal cosmic power", if they could figure out how to pull it off. (there are more examples than just iuz and zagyg... zuoken, cuthbert, vecna, acererak, and many more.) it's up to the dm to make it tough on the pcs. after all, no one is a slave to the books, the books are suggested guidelines, alteration and creation is encouraged, etc.. just notify your players in a general non-plot revealing way what you are changing, ahead of time, so they don't have legitimate blind-siding complaints.