Hi there, I have a few questions about player's abilities.
1. What does defensive wall do? is it wall as in free kick wall or just better at stopping attacks?
2. What does shadow striker do?

Also, should i give my players special abilities? I have a DC (19, 27Q), AMC (21, 30Q) and a ST (21, 28Q and 22,29Q).
I am level 3 and currently much stronger than most of my opponents, so is it worth spending the points on abilities for the long term?

Thanks!!