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Thank you for the idea about the story of the Ice Elves, but I suggested making them out of Light Elves, and it all happened like this:
During the First Chaos War, the demons, with their right flank, attacked the Sable Clan of the Light Elves, ruled by Anariel, later known as the Exile. After destroying the Castle, the demons continued to plunder the surrounding territories. Anariel, gathering the remnants of his army and grieving the loss of all his green dragons, loaded the remaining possessions onto unicorns and set out to seek fortune in the lands of the dwarves, with his old friend, the priest Arkath, Tancrem. The refugees easily made the journey, and the elves' wounds healed. The dwarves accepted Anariel, allocating a small piece of land to the south for the remnants of his clan. The construction of a new Castle had just begun when a new attack occurred, starting with a great honor: Anariel, along with several close relatives, was invited to a feast that was to be held in honor of the arrival of the dwarven king in these lands (history does not specify who exactly). The feast was grand and lavish, and much ale was drunk, and then Tancrem boasted to the king that the elves possessed an artifact that produced gold every day. Then the greedy king offered, as a sign of exchange, to sell the very territory on which the elves had settled for this very artifact. However, everything would have been easier, but this artifact was a symbol of the clan, and the ancestors had bequeathed it to be preserved. Angered by the refusal, the king cruelly insulted Anariel, and he almost killed him, a drunken brawl began with the use of weapons, and as a result, Anariel, with several surviving warriors, fled from the dwarven palace. Then, gathering all their possessions, the clan fled again, this time north, to the tundra. Along the way, all the unicorns died of starvation, all the ents withered without light, and only the elves remained. And even then, their strength waned every day, and it became increasingly difficult to find food. And when there was no strength left, Anariel fervently prayed to Silanne, but she did not hear him, but the answer was not long in coming. A dragon, never seen before, answered him, and a magical power was felt in him, and he said that his name was Glacionnis, he was a descendant of Silat and Shalassa, and he had no people who would pray to him and build temples. Then all the elves swore allegiance to him, for which the dragon gave the elves the ability to withstand any cold, taught them to build ice palaces, to run through deep snowdrifts without sinking, and most importantly, taught them Ice Magic.
Later, the elves found a common language with the Snow People, tamed snow lions and mammoths. Later, Glacionnis gave the elves the gift of protecting his children - ice dragons. And since then, the Ice Elves have been at war with the dwarves. Since then, they have been gathering strength, dreaming of taking revenge on the demons.
Thus began the history of another people of Ashan...