18.
A quick look at that link and damn. All the work that must have gone to test out those numbers. Amaura and its line truly are overlooked since I don't see a lot of people talking about this pokemon. I understand the abundance of weakness and fossil mons getting a bad look from the Sinnoh and Unova fossils, but do not let that stop you from using Amaura.
Also, where is Serenity? She used to post here.