Battle for the Freljord

I have an idea for a full length novel, or maybe a bit shorter novella style story based on the lore of the Freljord. Here's just a little bit of what I've written, if you'd like to read a bit more, let me know in the comments, I have begginings for Ashe, Sejuani, Tryndamere, and Trundle already written up that I can share depending on how the community feels about it, I won't overwhelm everyone here though.

“Back, and back again, the Freljord was once a great and powerful nation. All the tribes were united under a single banner. Avarosa ruled over her people with justice and grace. The Freljord thrived, great citadels were built, villages were growing and there was peace and happiness throughout the land. Yet there was a terrible storm coming. There was one among the Avarosan people that was not happy, she was lustful for power, and had greed her heart. Lissandra betrayed her people to an ancient evil, The Ice Watchers, who granted her a great and fearsome power in exchange for her soul. Lissandra rose up against the Avarosan nation with an army of the creatures. Caught off guard by the sudden army the Avarosans were sure to fall. However Avarosa would not let her people die easily, she rose up with her garrison, and with aid from the Frostguard they were able to defeat Lissandra and her denizens. But this victory came at a high cost. The Ice Witch slew many on that day before engaging in an epic battle with Avarosa. After many hours Avarosa struck a mortal wound to the witch with her magic bow. The Ice Witch, seeing her army devastated and herself hopelessly defeated, she vowed she would have revenge on Avarosa. From her fingertips a shard of ice flew at the great leader before the witch vanished. Avarosa tried to dodge it but the shard cut her arm. The magic of the Witch coursed through her veins and froze her heart. The Ice Witch was never to be seen again. Upon Avarosa's death, turmoil engulfed the Freljord. The tribe leaders that had once held under the Avarosan banner fought over who would claim the throne. The once great Avarosan nation disintegrated into the warmongering tribes that roam the Freljord now. While the Freljord had once been a beautiful land, the wars turned it into a very bleak place. The air seemed thinner, the wind blew colder, and with more ferocity. The revenge of the Ice Witch was complete. Although, some say that the Ice Witch Lissandra was not killed in combat that day. They say she lives to the North, biding her time, and preparing to once more overwhelm the Freljord and set all of Runeterra in an eternal winter. But Avarosa will strike her down once more with a shot from her mystical bow and restore the Freljord to its former glory, and the land will know peace once more.”