The Myths and Monsters pack is a Content Pack available in the mobile version of Little Alchemy 2.
Description from https://hints.littlealchemy2.com/content-pack/myths-and-monsters:
Discover fabled items, mythical gods and legendary monsters in the new Myths and Monsters content pack!
Use “immortality” to gather deities from a number of different mythologies. Bring fantastic creatures to life with the help of the “monster” item. And find the balance of the universe using “good” and “evil”!
Over a hundred new items from myths and legends from around the world are waiting for you!
Currently, packs are only available on mobile devices.But,you can wait soon if it avaible.