Yes, it is possible. The Unity Crystals are very important, because they not only symbolize the three pony tribes, return magic to the ponies, they chose Sunny as the future alicorn (who seems to be inhibited by her emotions) and the successor to Twilight, they are linked to the magic in all the ponies by receiving internal emotional magic from individuals - and releasing pony-related magic into the dimension with Equestria. Sometimes it seems like they are alive with their own consciousness, as seen when they responded to Sunny’s friendship talk with the pony leaders. And they react to magical imbalance, emotional negativity and have a clear connection with Sunny who does not yet know it herself.
The Unity crystals act as a door between dimensions, and when corrupt magic arose, a portal was opened to an unidentified dimension where ponies can survive, and from where the earth pony magic came out to the lighthouse, from there it spreads to all earth ponies. Zipp had a point when she asks where the magic came from, and we know here that the magic comes from the ponies themselves in G4, but that they are also connected - as seen with the elsewhere when Twilight became an alicorn. It’s as if the magic had been channeled through the Unity crystals in front of all the ponies, and if Twilight had done this, why? And more importantly, how?
The case of Discord and the pegasi crystal, the fact that the Unity crystals are very important and linked to Twilight’s fate, may indicate that the Mane 6 - Rarity, Applejack, Pinkie, Rainbow Dash and Fluttershy - are involved. The cover of # 1 is possibly more than just showing the generational change from Mane 6 to Mane 5. We know from MYM special that the mysterious alicorn wants pony magic, but that the crystals denied her, and these refused to be activated when these are put together , only when Sunny spoke a language Mane 6 understands.
It seems that the Mane 6 is watching over the future and the Mane 5, and Sunny will probably find out even if only Twilight will meet her and maybe only once. If Discord learns about it, and thus listens to Sunny, it can make him feel joy. For Fluttershy is still not gone.
But an external force is still out there, we do not know why the pony magic had become so unstable.