neo genesis japanese booster box Pokémon Sealed Packs & Boxes Pokemon Neo Genesis 1st edition

Cards with enter the battlefield (ETB) abilities are easy to find

Structure Deck: Gates of the Underworld Preceded by Structure Deck: Lost Sanctuary and followed by Starter Deck: Dawn of the Xyz How To Play This Deck This Deck works by Discarding your Dark World monsters from your hand

Dont take this the wrong way at all but asking a question like this signals to me that you dont fully understand what youre buying

As for your second question regarding BGS, I dunno, although Im interested to hear the answer as well

Three more Trophy Pikachu cards from the Pokmon Trading Card Games earliest competitive days recently sold at auction for a staggering $794,220 (627,477)

This evolution only exists in the manga, and can be considered the manga's counterpart of Chaos Xyz Evolution