In general, they tend to be quite balanced decks and work well
While this does lock you in til death do us part, its easy enough to profit off of this before sacrificing it or blowing it up
It's easily one of my favorite cards of all time (sorry, Bubble Mew), and while I believe Mega Gengar ex will be the reigning chase of the set from a community standpoint, I think Dragonite will be one of the highest priced cards of the expansion (even if it probably won't make our list of the most expensive Pokmon cards of all time)
Emerge decks will play it because it exudes a ton of value, and midrange and control decks may maindeck or sideboard it because it acts like a damage sponge
Both first edition Pokmon cards and second printing cards lack the shadow around the border, which appears on later cards, but because they have the logo, the first printing is more usually called first edition