This is just a short piece that popped in to my mind. I may use it as a springboard for a future story. I hope you enjoy.
I own nothing of Buffy or her worlds they belong to Joss Whedon and I am thankful to be able to play with his toys.
Buffy stood at the large window her gaze focused not on the vista before her but on a time long ago.
There was no way they could have known. The Scythe was forged with powerful magics to be a companion to The Slayer for all time. Its power was bound to The Slayer but was not of The Slayer and when Willow cast her spell to use the power of the Scythe to call all the potentials the power came not from the Scythe but through it from the last of the true Chosen, Buffy. The spell awoke the Slayer in all the potentials but it also bound Buffy and the Scythe together on a fundamental level. The Scythe was forged to be indestructible and eternal and now Buffy was also.
Over the decades, now centuries, Buffy had watched all she knew, all she loved fade and die until she was once more alone. One girl in all the world with the strength and power to fight the forces of evil.
Out of the corner of her eye she saw the engines of the Exodus Fleet flare to life driving the armada of ships towards the stars. She turned her back to the cinder of the once blue orb and mourned for the Earth That Was.