This is indeed a fun card to play, like Convulsion of Nature, though the bad thing is that you can rarely find a real life advanced player that doesn't have his grave spreaded so he can see everything in it, making this card useless. However you can request from the player from the beginning of the game to keep his grave in a stack, but I'm not sure if there's a rule for this.
Anyways, Karakuri Bushi mdl 6318 "Muzanichiha" FTW :D