S
Sunseeker
Guest
Actually the rationale comes from the MM. If gaining class levels like PCs was normal, every vampire would be a wizard and every ancient dragon would be a zillionth level wizard. Do you realize how far you could level up in a thousand years of solo adventuring backed by a dragon's special abilities? Even a bog-standard troll could easily become an 11th level fighter, if kill XP is all it takes.
It's cool if you want to let monsters level up as a common thing, but don't say there's no non-metagame rationale for disallowing it. Clearly there is, and it's a basic necessity if you want a humanoid-dominated world.
Ancient creatures being insanely powerful and often multi-classes was common practice in editions past. But they are rare for a variety of much more logical reasons, such as they're obsessed with hoarding knowledge. They're paranoid their fellows will come to steal their power, so they kill them first. It's not a far-fetched idea in fantasy that the prime reason that zillion-year-old creatures are rare is because they tend to go to war with each other periodically. That and the knowledge to become a lich is fairly hard to gather and even harder to put into practice.
I DO realize how far you could level up with thousands of years of soloing the world, but there are much more reasonable reasons for why there aren't hundreds of dragon-god-lords or at least why they're not here. The thing is: monsters adventuring they face the same problems as players, the world fights back. Eventually another dragon shows up, or enough kobols gang up on the thing or the humanoids of the world band together or whatever. Those are all great reasons for why incredibly powerful creatures aren't omni-present.
Vampires are humanoids, so I think you're stretching if you're going to claim that being an intelligent undead somehow prevents you from furthering your skills.It's not rationalization. It's assuming that not every creature has the kind of flexible intelligence to go beyond its natural limits as in-game humanoids do. If you want monsters to level and gain class abilities, that's fine, but then you have to accept the logical conclusion to that reasoning...namely monsters gaining levels and class abilities as a matter of normal play - even when not controlled by players. For practically immortal creatures like liches that means liches who are not only Level 20 wizards, but level 20 fighter/assassins too. Level 20 Beholder/Monk anybody? I wonder how it manages Quivering Palm? You will unavoidably break tons of game assumptions when you allow undead/non-humanoid characters. Be prepared.
Again: the assumption that ancient creatures are absurdly powerful from years of studying is not uncommon both throughout previous editions of D&D and fantasy in general.