Board Thread:Questions and Answers/@comment-6234749-20130908172800/@comment-16838895-20130908180716

Well, is there a limit to an ability. Chances are you cannot create a 5 km long fireball. First because as far as i can tell, theres a limit to how much psi you can exert before your mind just refuses to concentrate, and since concentration is the key then there is a limit. You can push the limit further, but it would take longer than you live to be able to do something like that.