Very Important Unit - Let's Play Warcraft III Part 29

In this part, we take on Chapter 2 of Eternity's End. In this mission, we have to sneak across the forest to help our allies, and we need to do it covertly. Since I'm terrible at that, I'm lucky the game is quite forgiving when it comes to that. However, there is one unit that we can find that will prove to be absolutely vital to everything we do today.