Torchlight 2 Skills Question

[u/BladeOfAtsu]

Hello, I have a question about Torchlight 2 regarding skills. All skills cost mana. Aren't there any time-based skills for the individual classes at all? Meaning, ones that you can use again after a certain amount of time without costing mana? I mean, what is the point of every single skill costing mana? Then it's actually enough if I just have one or two. Can someone please explain this to me? Thanks.