Sylveon V is the first of the 3 Brilliant Stars Tins we are opening. Not that there is a whole lot of difference between them all. The 5 packs you get inside each tin is always the same (as far as I have seen). You get Brilliant Stars x2 and one each of Fusion Strike, Chilling Reign, and Evolving Skies.
There are also some small, but interesting variants between each of the tin covers and one of them is just straight up borked. Look for the numbers on the tins as well. You’ll know it when you see what I’m talking about.