Tau

Said to be the last letter of the Hebrew alphabet thereby representing the end of something, perhaps the end of life, or death. (See "The Second Messiah" p 41)

Members of the Knights Templar were placed in their tomb with the left leg bent behind the right leg making the the 'x' shape, which is one shape of the Tau. The Hanged Man of the Tarot is also shown with the left leg tucked behind the right. (See "The Second Messiah" p 95)