This post is a tragedy. Please read about the warlock class before you post again.
Is UA shadow damage?
I had a crazy though when looking at the suggested glyphs it recommends UA glyph, but the normal cast starts at the GCD time, so reducing the cast time via glyph is kind of pointless. Taking into consideration though using Immo glyph instead and adding Improve Immo talent increases the base damage of Immo above UA. Then you'd only use UA after the mob reaches 25% for the free refreshes.