Few cards are outright banned in Vintage, and those are special cases like dexterity cards such as Chaos Orb, cards that dont work in the format like attractions, conspiracy or ante cards, or a set of cards that are racially and/or culturally insensitive
For beginners, focusing on Pokmon cards and rare cards is a smart choice, as they are highly sought after and can increase in value over time
Brock lets you attach an extra Fighting Energy to either an Onix or Golem and, back in Genetic Apex, he was widely regarded as the worst Supporter in the game because neither of his featured cards was very good
BLACK STAR PROMO SERIES
A couple of the vampire cards in the deck help to make black Vampire tokens, which can be sacrificed to Ayara, First of Locthwain to draw a card
Protective Orb A Pokmon Tool that removes your Pokmons weakness