On today's episode of Theorycraft Thursday Ursi and Proud talk all about their new project Fourth Spirit, what that means for TcT (hint: nothing, its staying the same!), and more before going into their week in dota, how to identify and optimize your hero choices and item choices around your allies and more! This week's combination is a 4 position roaming Slardar paired with an offlane Underlord with particular emphasis on how the two compensate for the nuance of Underlord offlane versus many other common offlaners!