Card Lores:Silent Kill, Saphira

She's one of the "Front Gate Assassins". She can blend in the shadows fully without being seen, and will sneak upon the intruders as she finishes them in one blow. She moves fast, and can signal everyone with clear alert when someone gets through with her Sixth Sense. And soon, the intruders shall be surrounded and get to what they deserved from trying to break into the peaceful Shade Artificial.