Patience - A leader needs to always have a cool head and think clearly before making his decisions
Charisma - He not only has to gain the respect of his team but also deal with outsiders. If your still not convinced, one word: Hitler.
Wisdom - You can't lead a team without having any common sense. Intelligence you can leave to someone else in the team.
Perseverance - Leaders are going to meet numerous obstacles.
Organized - A leader has to keep track of numerous things at the same time.
Experienced - Nobody has it the first time around but it really helps. An experienced leader will be able to make better decisions and also have the respect of his teammates.
Empathy - A good leader has the ability to understand how his team mates feel and help/deal with them on an emotional level. A happy team is an efficient team.
Decisive - A leader is basically the head of the whole team and needs to make the decisions just like our brain does. If he can't make up his mind, his team can't move.