Hey. Got a magic question for you! WARNING!!! There abit gory!!?

Anyone know how these a href="http://www.youtube.com/watch?v=a0p-FzljHAo" rel="nofollow"http://www.youtube.com/watch?v=a0p-FzljH…/a a href="http://www.youtube.com/watch?v=gGr7RWc-lpw" rel="nofollow"http://www.youtube.com/watch?v=gGr7RWc-l…/a are done? I know they are purely illusions, but anyone know Exactly they are done? Its been bugging me!