I'm looking for a specific fic I read a while ago on livejournal.

It was preseries and John knew about the demon blood in Sam. There's a little part about Sam being into magic tricks (card tricks etc) at the beginning.
In the fic they are kidnapped by hunters who want revenge for when John accidently got one of their own killed, like he had a choice which hunter's kid to save and he picked the closest one or something.
So the hunters decide to do the same to John. They're holding John, Sam and Dean in a cave and they make John choose which son they will kill. John can't choose and so they do a coin toss to decide.
John picks which son will be 'heads' but the twist is that the coin is double heads and so basically John picked Sam to die and Sam knows this (but not Dean). But there's a cave-in before the hunter kills Sam and so he doesn't die.

Does anyone know it? It was a really good fic.

FOUND!