Fearing that the Doctor would use the Moment, Rassilon and his fellow councillors attempted to escape the Lock by retroactively planting a four-note drumbeat (the rhythm of a Time Lord's heartbeats) into the Master's brain as a child and cause his descent into madness. From there, once the signal is made tangible enough, a Whitepoint Star, a diamond only found on Gallifrey, is used to create a link between the final day of the Time War and Earth so the Master could release Gallifrey from the Time Lock. The plan ultimately failed, as the Doctor destroyed the diamond link and the Master apparently sacrificed his life to take revenge on Rassilon, sending the Time Lords back to their apparent doom. Unknown to almost everyone involved however, this was not the final end of the Time Lords. As "the Moment" had a will of its own, it showed the War Doctor an alternative solution and ultimately enabled thirteen incarnations of the Doctor, ranging from the First Doctor through the Twelfth Doctor, to gather to save Gallifrey by freezing it in time and removing it from the universe. The sudden disappearance of Gallifrey left the Daleks firing upon and subsequently annihilating themselves, while the Time Lords remained, albeit powerless and forgotten.