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)
For example, if you choose a land that's become a creature, all your other creatures will become noncreature lands until end of turn
Theyre simple - every time you tap them you get a trigger, and they may even help take out some pesky hatebears or other small bodies along the way
However, since I haven't reviewed that card yet and I have not reviewed the other Koffing card from this set, I'll just act as though I plan on using this card without its evolution
Incapsula incident ID: 684000660487850792-300718783883645113