Wycen said:
If they stop him, he gets booted from Sigil. Ultimately, this event destroys and remakes the universe. Voila, you have moved from 2E to 3E. That is the official explanation behind the switch in editions.
Ah but is it an official explanation of the switch between editions? Many of the changes in the planes described at the end of the module are utterly non existant in the 3e MotP cosmology. I'm tempted more and more to think this is just an idea created after the fact to give the module more credence, though I could be wrong.
And it's a good module, it just makes the fatal error of around a page or so of material that attempts to explain The Lady of Pain, and that re-invents what The Serpent was in the first place. Previous to DVD, it was only a personification of magic, a way that Vecna referred to that abstract concept and venerated it as. It wasn't really ever an overpower or even a sentient being, or one of the 'ancient brethren' that DVD tries to depict it as. As well, the module doesn't say that The Lady is powerless to stop Vecna, just that she could instantly, but would destroy the multiverse in the process.
Now we've already have some pretty bitter arguments on some other threads here already w/ regards to DVD's status in canon for Greyhawk / Ravenloft / Planescape etc, and I won't really rehash all of that. However I will say that
Planewalker has been working on handling the module and its relationship to the setting in the next chapter released on the site. People who like DVD will be happy, so will those who abhor it. Most of the events are used as is, it's only the information that's revealed suddenly at the end of the module concerning The Lady and The Serpent that get manhandled. In any event there was no in character link to that information for any PCs or NPCs in the module, heck it wasn't even necessarily told to players playing in that module.
It happened, just not perhaps for the same reasons it may have initially claimed. There should be less people offended on both sides of the issue once we release it.
And it was the Armory in Sigil that Vecna and cult took over and rebuilt from its ruins that had sat there untouched after the Faction War battle at the site. And on a related note, those spheres of Annihilation there came up missing after Vecna's forcible expulsion from Sigil. However it happened, most people assume The Lady's hand was involved one way or another, but the end result was the same, Vecna got hurled back to the prime, hemmoraging a good chunk of his divinity in the process. (And Iuz ripped his way free again).