Its main strength is the Perfection ability, which lets it use attacks from other Pokemon-GX or Pokemon-EX in your Bench or discard pile, as long as you have the Energy
Buying a recently-released set of Japanese cards may or may not be cheaper than an English set
It could be more than over two-million-dollar, as per the reports
Search your deck for up to 3 basic Energy cards and attach them to your Pokemon in any way you like
Since the Glitters ban, Affinity has moved back to Grixis, so it's unlikely this makes a big impact right now, but will assuredly see play whenever more White-aligned artifact aggro decks pop up
Our house was also full of dads who took off work early to attend, one even whipped out his phone to consult stats on the TCGPlayer app