The Elements Of Balance

Celestia and Luna looked at Cadence in alarm. "you sure?" Celestia asked and Cadence nodded. Celestia and Luna exchanged worried glances. "She's returning...." Luna said and Twilight and Spike exchanged confused glances. "who is?" Cadence asked. Celestia sighed. "Show us the crystal heart" She said and all for princesses flew to the crystal Empire. They landed in front of the crystal heart and Spike fell off Twilights back. Shining Armor was trying to keep all the crystal ponies calm while the guards blocked the ponies way to the heart. The crystal heart was black and pieces were falling off of it when they hit the ground they melted into a black liquid as thick as blood. Luna's eyes were wide with shock as she stared at the crystal heart. "I guess it's time we tell you the truth of the crystal heart." Celestia said and made a black barrier around the four of them. Celestia made a small screen in front of them where images were projected with magic. Images went by to quickly for Twilight to keep track but it stopped on a picture of an alicorn standing in front of other ponies. Three alicorns and a unicorn. twilights heart lurched as she realized the unicorn was a younger version of King Sombra. Cadence was staring wide eyed as the picture changed to the Sombra and the three alicorns blasting the other alicorn with magic that created a hard crystal shell around her which quickly became the crystal heart. "the pony in the crystal heart is what keeps the empire from falling." Luna said. "what's with Sombra?" Cadence asked. "Um he actually helped create the Crystal Empire. He didn't know the alicorns would use the other alicorn's magic to generate love in Equestria." Luna explained. The barrier around them disappeared. They all looked at the crystal heart. It was almost completely broken and the black liquid that was the pieces started creating the form of a pony, the form of an alicorn...