Many special sets, such as this one, do not get released as individual packs or in booster boxes, meaning the easiest way to open them in large quantities is through the ETB
Lost Abyss was released on July 15th, 2022, and is notable for bringing back the Lost Zone mechanic with a brand new look that appears on various different card types in the form of smoky, colorful tendrils
Plus casting everything at instant speed is really sweet
Enlightened Tutor specializes in allowing white to find artifacts or enchantments, adding consistency to any deck you put it in, whether that be an equipment deck, and enchantress deck, or a combo deck revolving around specific non-creature permanents
That said, those using Gyarados ex will find that the Pokemon has more HP and a higher-damage attack than the standard version of the sea creature, and thus, these decks have a much better chance of winning