No Yveltal on this list. It may have its tools such as Dark Patch, Maxie's Gallade/Archeops, and Max Elixir, but I find that Yveltal often lacks in power that it could call its own. While Yveltal-EX tries so hard to build enough Energy to use Evil Ball effectively, you already have several decks that can destroy what means it has for Energy acceleration and several more that deal as much damage as Yveltal, if not more, for less investment and a smaller risk of losing Prize cards. You could take a more disruptive angle by using Pokemon such as Garbodor in it, but by this point, you might as well be using Darkrai-EX. It can accelerate more Energy at a smaller risk, and its momentum is not as easy to diffuse since Darkrai-EX isn't the one that needs to hold the Energy for it to be powered up. At this point, Yveltal is obsolete.