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Original Description:

After Princess Twilight Sparkle became the Ruler of Equestria, the land was in peace and harmony for many years. However, one day everything changed when Queen Opaline came from “the land above” and caused every creature and every pony to come to war with one another. She Succeeded in dividing the ponykind in parts and turning them against each other which led her to become more powerful and join the war herself.
This was the beginning of The Final Battle for Equestria.