9. Your teammates never buy TP scrolls

Town portals are a beautiful thing. They cost practically nothing and they let you teleport between friendly structures at a moment’s whim. They can be used offensively as well as defensively, and they are a required purchase for anyone who is serious about trying to win a game.

But then, there are those people who don’t buy them. Why don’t they buy them? Who knows really, but it’s often the case in most Dota 2 games to have at least one teammate consistently forget to keep one in their inventory. Town portal scrolls are a necessity when trying to defend a tower or teleport to a team fight that is occurring around a friendly structure.  

So yea, Town portals are crucial, and you should always carry one or two or three of them at all times.