Regardless of the series that you pick, the first duel in each one is pretty much a tutorial that gets you familiarized with the game mechanics and archetype from that era
Its one of the most important cards in that format, and every serious Modern player needs a set of these
In the mainline games, Raboot plays a pivotal role as a starter Pokmon's evolution, capable of adapting to various strategies with its high speed and special attack stats
These were Draft- and Limited-only sets with a strong focus on multiplayer gameplay
Pokmon's own Scarlet and Violet rarity update spells these out: "double rare cards are represented with two solid black stars," and "hyper rare cards will be represented with three shiny gold stars," while the older "solid black symbols for common, uncommon, and rare, circle, diamond, and star, will remain unchanged" (Pokemon.com)