Sacrosanct
Legend
On a side note, a TPK isn't necessarily this horrible thing that should never happen. It does happen, and is part of the game. Pretty much all of the TSR editions said right up front that PC death was a thing that will happen at some point, and it provided an opportunity to play something else, and it's certainly not the end of the world. IMO, if you play the game with no real risk of PC death, then all you have is a shared story so why roll the dice to begin with? Obviously YMMV