This is, atleast with my knowledge, the best trap ever. |--| It kills the griefer 100%, and nobody will know HOW he die. Well, unless they watch this :P. It also collects about 55% of the items from the griefer. So that's pretty good. He will just think that his stuff glitched out. NOTE: THIS DOES NOT WORK ANYMORE SINCE MINECRAFT 1.4.4!.