Summers, Springs, Winters, Falls. For many years these four alicorn control the four seasons in Equestria, they were called the alicorn’s of the seasons. That was until Discord showed up, he corrupted the magic in Equestria and the four alicorn’s lost their control over their season’s. For two hundred years the four sisters had no control over their seasons, they wanted that Discord pay for his cries but Celestia refused, so the ponies of Equestria became in charge off the four seasons. The four sisters were also four of the six of the elements of harmony, loyalty, honesty, generosity and laughter. Then Luna became Nightmare Moon and Celestia needed their help and then everything changed.