- 2013/06/20 10:11:00 PM
More to the topic, though, I think the concept largely stems from the idea that casting a spell takes an extreme amount of concentration. Imagine, for example, a chef preparing a meal and chopping up a bunch of potatoes or something. Now imagine him doing it at a brisk jog. Somehow that seems... unsafe, at best :P
Obviously there are gameplay reasons why a spell would be castable while moving, but even then, one could argue that part of the "strength" of that spell is the ability to do so. Maybe a Lightning Bolt is fairly easy for a Shaman to cast while standing still, but it takes a lot of focus to be able to fire one off while running.