Rewind Time in Vanilla Minecraft!

Note: I'VE RE-UPLOADED THIS VIDEO 6 TIMES, SORRY. Hope you guys enjoyed my new concept in which you can undo actions or events, but sadly it currently only works in singleplayer, but if you just copy and paste the contraption for how many players you want and change the scoreboards up a bit, it should work in multiplayer! Lorgon111's (or "Sethbling's") Instant Replay Video: https://www.youtube.com/watch?v=17AUbVnpc9g Download Schematic: http://bit.ly/1v5TzKQ If you want a world download tell me in the comments, or just if you have any questions or complaints just put them in the comments! Thanks!