Complex sentence: Anya tries to accomplish this impossible task but the night was so cold and the storm was so big that She would certainly die of freezing but She was saved by the spirits of the Twelve Months.
Split into simpler sentences: Anya tries to accomplish this impossible task, but the night was so cold and the storm was so big that she would certainly die of freezing. Anya was saved by the spirits of the Twelve Months.