Use protective sleeves, binders, and card boxes to prevent damage from dust, sunlight, or moisture
You can learn more about the new MTG Avatar: The Last Airbender set over on the MTG website
There are a few staples that any Elf deck will love like: Elvish Archdruid Elvish Warmaster Overwhelming Stampede There are several high-power spells in the deck too, like Heroic Intervention and Asceticism to keep your creatures safe, and Genesis Wave to turn your mana into even more creatures
Basic lands don't really need much text since players know what they do, so having more room to appreciate the art is a great perk
In true Marie Kondo fashion: if owning the cards brings you joy, then keep them
You draw the top creature from your library