The Celestial Teostra mod is a texture pack that allows you to customize the appearance of the Teostra so it resembles a nebula. The pack includes a variety of textures for you to choose from, including a glowing red mane and tail, and many other colors.

You will have to download the pack in order to use it, and it will take you a long time to download it. You will need to connect to the Internet in order to download it, and it will be very slow to download. The pack is not designed to work on mobile devices, and it will take a lot of memory on your device. It is recommended that you download the pack on a PC or a large mobile device.