Use the cards you drew to play even more "OP12-056 Monkey.D.Garp" and "OP12-044 Sakazuki" cards, and use their combined power to overwhelm your opponent.
I also like Quasiduplicate type cards, especially when paired with stuff like Doubling Season and Parallel Lives
Darkness-type Pokmon tend to have attacks that make your opponent discard cards
But explore enough, and youll start to find alleyways, courtyards, and rooftops hiding rarer monsters: an Ariados dropping suddenly from a sewer ceiling, Gastly leaping out from a dark corner at night, a single Eevee trotting down a narrow backroad
For a long time, it was a legendary Vintage control card, and the mix of power plus scarcity is a big reason it built such a scary reputation, even if it ran up against mana burn when it was printed