An AU where the Pillars of old Equestria don’t plant the sapling, and don’t send Stygian possessed by the pony of shadows to Limbo. They end up killing Stygian in their attempt to exorcise the pony of shadows. It didn’t work, killing Stygian and letting the pony of shadows escape. They screwed up, and they needed a plan to fix it. In place of the canon timelines sapling, they turn themselves into crystal statues that will eventually use their harmony filled magic to become the tree of harmony (or something similar) and the elements of harmony. Stygian was buried in the cave they chose as their mutual resting place, the friend they ignored for so long and were unable to help in his time of need.
(AU of what if Starswirl was a little less of a jerk and actually tried to help Stygian. But of course there has to be drama)
Optional additions-
In this AU the Nightmare Moon event would be because of the Pony of Shadows.
The reason the pillars attempt to help Stygian didn’t work as planned could be for a multitude of reasons. They didn’t have powerful enough harmony magic yet and it needed to get stronger over time, which meant immortalizing themselves in crystal and becoming a power source for what they hoped would become a powerful force for harmony. They haven’t found out that friendship equals magic like the main six in the future did, so while Starswirl was definitely the caster of the group, he wasn’t the element of magic. Stygian was. As he was the one who brought everyone together in the first place. So even though they had no idea at the time, it was very crucial that they buried Stygian in the cave with them.
So what element would Starswirl be? I think he just adds a huge amount of needed powerful magic to fuel the process. Maybe he could be the element of Regret and Self Reflection. To look at one’s self, their actions and mistakes. Would he get a gem? I don’t know
















