Even if you aren't playing around the Status part of this Supporter, accelerating two Darkness Energy from your deck to two Pokemon is an excellent way to get guaranteed Energy
Rowling is in the middle of writing and releasing her staggeringly famous series, having just put out Harry Potter and the Goblet of Fire (book four) in the year 2000
Just looking at the maindeck, you are countering at least 12 of their non-negotiable slots (Glistener Elf, Noble Hierarch, and Vines of Vastwood), along with some number of Growth, Might of Old Krosa, Groundswell, etc
For context, there arent any reported cases of mass Pokmon card fraud so you dont need to be overly anxious about buying a card
Not only are the pullable cards usually the ones that hold their high value, but Bandais officially sanctioned, large-scale events give the most hardcore of players an opportunity to earn some high rarity cards that will only be available to the best in the game
But thats not what makes for the best overall cards