Door with chameleon handle

Asteria lived a humble witch's life, studying in a small school with other witches and wizards, having a friend of a black cat with button eyes, but most importantly away from people and trouble. She would be a perfectly ordinary witch, if not for the fact that she's purebred, her dream is to unite the races and all the time she has strange dreams about a door with a chameleon handle. Perhaps her life would have been so peaceful were it not for the day when the forest caught fire. Someone's behind it, and behind them there's an even greater plot linking all races and going back to the time of the First Witch. Asteria sets out on a journey to learn the truth and continue learning. *English is not my first language. If you see any mistakes, please correct me.*