i really wouldnt suggest using magic to get past the law, thats just not what magic is for. However, for the card throwing thing, i think it could work. as long as you dont give them a sever injusry its fine, in my opinion. When i get xb2, i'm gonna practie card throwing till i can get it as quick and as powerful as i can, then when someone botthers me at school, i could just take out a card, throw its at a soft surface (like the ceiling cuz my school has like a syrafoam ceiling) and have it stick and say "You want that to happen to your head?" and they'll back off (hopefully).