Can someone let me know how to get ancient pokemon? They seem cool and I really want to own one

First , you need to get your Crafting level to 100 by using these Recipes to craft [you must login to view links]
and then you need to become the ancient master of the day by beating the ancient tower the most in a day to get a Ancient Fossil so that it could be crafted into a ancient pokemon you could also Increase your crafting level by getting the Ancient Crafting Books which could also be obtained by becomming the ancient master of the day.