lolofftopic
In answer to the crappy nooby first question. No!
You could easily pull together a few addons such as the castle pack, fireball magic and other such medieval fantasy mods, then build yourself a nice elven tomb, and voila. There's no point making it one addon, when you can replicate it yourself. That's what makes Blockland great, because you can create anything your imagination comes up with, if you have the time and effort needed. Which I expect you'll fail at.