Even though TF has a ult that (even though it's not global) can allow you to travel a great distance in a short time it's best to save that for getting out of ganking situations. With a build like this it will be easy to take out turrets when the enemy is away latter game. Speed and damage. The downside is that taking a turret tends to have the entire team close in on you and since TF is lacking in the movement speed department a *chuckles* ace up your sleeve is just what you need. ... It was funny XD.