Type: Racial
Source: Dragon #330
You can channel the power of the Umbra to enhance dark magic.
Prerequisite: Umbragen race,
Region: Xen'drik (Eberron)
Benefit: When you cast a spell with the shadow or darkness descriptor while in shadow form, your caster level is increased by +1. In addition, the saving throw DC of such spells is also increased by +1.