Cool combo, havn`t seen this. But I don`t see the fabricatre-Lyra combo. How does fabricate helps the lyra?Craft (trapmaking) and your Lyre of building should be a nice combo. If you have access to Fabricate, you could skip the annoyance of the Lyre's recharge time. Since Craft is an Int-based skill, it probably won't take many ranks in order to make it effective. The tricky part is to set triggers that your undead (and you) won't trip, but strangers will.
I may be an evil, rotting necromancer, but that dosn`t say I have to live like a zombie. I have a big library and I have to guard my phylactery somewhere.just make the place a big dump!!
The Problem how I see the spell is I can`t tell em: guard this place.Lesser Planar Binding: invisible Osyluths with Ice wall rock
Still the problem with the duration.The best option IMHO still is not to be seen (Monty Python, anyone?).
Wow what a cool spell.Mordenkainen's Private Sanctum
I hav peeked into it in the LFGS. And after reading the entry in luxery library: "mahagoni shelfs with glass doors to protect the books. Lassers on rails..." And the best part" "...marble floor has symbols inlaid that denote the section of the library.." I realized my Necromnacer really needs that.You should get the stronghold builder's guide.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.