Pardon me for reviving this thread, but I believe I have some useful info pertaining to this topic.
The key to using Lugia LEGEND is to use it as a teched nuke, not build a deck around it. I've been testing around with it in a basic Zekrom/Eel style deck, having 6 electric energies, 4 Rainbow, 3 fire, and 3 water. A lot of energy, I know, but it helps that Ocean Glow power Lugia LEGEND has getthat extra key energy or 2 more reliably. Needless to say, I've been very surprised with how well it does. The main strategy with Zekrom and Electrik is largely uninterrupted despite the lower electric energy count, and for some reason, I can almost always call out Lugia LEGEND whenever I want (I run 2-2 of it). And I really honestly wasn't expecting it to do this well to begin with. It was just a random fun idea to annoy any potential EX users at league.
It DOES have problems with Donphan Dragons, though. However, two solutions to this problem exist in the Next Destinies set (and I have tested AND confirmed this): Zapdos and Articuno. Zapdos is an odd electric type since it doesn't share the fighting weakness that its other electric type bretheren all share, instead having it as a RESISTANCE. The ability to snipe for 50 while laughing at the efforts of Donphan Prime and other fighting types makes it very useful as both a fighting type wall and a general purpose sniper. However, it can't do much to Donphan back. Articuno is for those that want to take a head-on approach to the Donphan/Landros problem. As a big bonus, it has a STEEL weakness, NOT THE ELECTRIC WEAKNESS that other fighting-type resistant pokemon are known for having, further helping against Donphan Dragons, which have Zekrom to punish those pokemon for coming out. I personally run 1 Zekrom, Zapdos, and Articuno each. They are all easy to power up thanks to Electrik's energy acceleration, and Lugia LEGEND is almost always waiting to obliterate any bulky pokemon that thinks they're safe for the next turn.
I also run a 2-2 line of Zebstrika ND for early trainer lock and/or 80 damage snipes, which I have found to be EMMENSELY helpful. There's so many ways to exploit this, whether it's to lock a Magnezone/Eel's RCs, or to drag out a Terrakion via Catcher and lock them so they can't Swith out. It also helps you protect your Eels early on from being Catchered out while you energy accelerate away. The list can go on. Of course, that's just my personal preference.
Through my testing thus far of this deck, it has consistently won its matches against other Eel variants, Mewlock/box, and, with the bird techs I mentioned above, even Donphan Dragons. I still have to test against the better decks out there like 6+ Corners and CAKE, but the basic point of my wall of text here is that I can confirm that Lugia LEGEND is, much to my surprise, a viable play not just against EX pokemon, but other bulky pokemon as well. For those who want to try Lugia LEGEND, I'd reccomend teching it into Zekrom/Eel first, test, make necessary adjustments, test again, adjust, rinse and repeat until you are comfortable with the deck. If it doesn't work for you, there's always the other million deck ideas swimming in your head after ND came out.
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