Umbrath/Dark Stealth

Umbrath is a form of dark seeking, a off-spring of parkour with mixed stealth and dark techniques, it is like parkour but more dark and "sinister", Umbrath is to be mainly practiced in the dark as well as at night. An example of Umbrath could be you trying to gather info/stalk someone in some sort of way, to scout out an area, or to get knowledge or get something you desire. (Or vice versa)

Person1: "Have you heard of Umbrath?" Umbrath/Dark Stealth
Person2: "No? What is it?"
Person1: (says def)
Person2: "Oh cool! Ill look forward to learning it."