The final battle would be really TOUGH! The Discorded Mane 5 against you. Discord would only start to move and attack, when you turn the last of the Discorded Mane 5 back to normal (when you would turn one back to normal, they would join you in the battle right away, to help you). After you would beat Discord, just like in Return of Harmony, and MegaPony, your main pony of the Mane 6 would levitate up, and then the rest of the Mane 6 would levitate up too, and then the Elements of Harmony bracelets would come out of nowhere and attach onto them, as they would prepare the Harmony Blaster, to turn Discord into stone, saving the world of Equestria, once and for all.
First I learn of it. My comment back then was based on canon.
Depending on if one follows canon or fanon. There is a fanon where all die when trying to use the elements because RD wasn’t there.
I see you are a person of culture. XD