If you're more experienced, then I challenge you to focus on a new aspect of the format that you haven't yet mastered!
Both Obelisk and Slifer, er Saint Dragon bear an English translation of the original cards Japanese rules text and different artwork than you might remember from the anime, where Yami Yugi and Seto Kaiba wielded them in their decks to devastating results
Black Avenger of the Fallen We know 2/4 Deathtouch is a good stat line
Key chase cards include Mega Gardevoir ex #92, Mega Gardevoir ex #87, Mega Gardevoir ex #78, Mega Latias ex #88, Mega Kangaskhan ex #89, Mega Latias ex #79
Go ahead and use cards you miss from recent Standard formats, like Bontu the Glorified and Gifted Aetherborn
Deck 1: Colorless Lugia VSTAR | Pokmon The strategy of a Colorless Lugia VSTAR deck is to get Archeops in the discard pile, usually with Professor Burnet [Sword and Shield Promo] and Ultra Ball, use Lugia VSTARs Summoning Star to summon them into play, and accelerate Energy to your various Pokmon