[quote=MelonHead]
Part of prepping is it has to have a cost, it usually means a lack of concentration, or it takes a significant time. Gives the opponent plenty of time to interrupt.
[/quote]

True. But in some cases there are items/something that preps on it's own while it's wielder is doing something else. Plenty of time to interrupt then? "technically" they still used a post to charge, etc, etc. This is basically the part of prepping I'm unsure about. If Joe the Axeman is running through the woods with his magical axe, and spends a post describing how his axe is charging up, then Bob the Ninja attacks him on his post with his katana, only to have Joe cut him in half with his prepped axe. Is that legit?