Jay Z and Justin Timberlake have forged quite the intrepid alliance this year. Back in the winter, they teamed up on JT's bouncy single "Suit & Tie", while the summer saw them take over U.S. and Canadian stadiums on their Legends of Summer Tour. As we move into the fall, we have the latest installment of their seemingly endless string of collaboarations, "Holy Grail" from Jay Z's ambitious LP "Magna Carta Holy Grail." The video debuted exclusively on Facebook on Aug. 29th, and will not be available on YouTube or any other video provider until 12 p.m. on Aug. 30th. This marks the first time a major artist has used Facebook for a premier.