The black symbol in the bottom corner of a Pokemon card denotes its rarity: a circle is common, a diamond is uncommon, and a star is rare
Some pre-release lists ran two, but you generally value more Extra Deck space over the capacity to summon this a second time (especially since Loading
Yes he's a target, but when every creature you have has a target on its back, wouldn't you rather have one of your mow effective be one that can be played for cheap and will be helpful at any point in the game
Deck is not meta for sure but when it works it REALLY works
Furthermore, cards that feature multiple Pokemon are often excellent choices to invest in, as they typically garner more attention than single-subject cards
These decks, in turn, all include many staples, so the entire box is extremely relevant