The Shadow Weave
[A cautious treatise on the power of the Shadow Weave. The author talks about the formation of the Shadow Weave as a counterpart to Mystra's Weave. The Shadow version is in some ways more potent as a source of magic, but it's also unreliable and volatile. Shar, mistress of shadow, has a much more fickle nature than Mystra, and according to the author this manifests as a seemingly fraught and dangerous position as vigilant - dangerous to those who tap into her font of arcane excess, that is.]