A circle on your card means its common, a diamond indicates that your card is uncommon, and a star means its rare
According to statistics gleaned from all sorts of Pokmon TCG tournaments around the world, these are the decks currently at the summit of the Pokmon TCG meta
Nice synergy with Boo and others, and then you can -2 them to sacrifice a dork you control and shoot a target where that was its power, another cool way to play into Boo who just got built up last turn and you'll make another for free, so that's fun synergetic card that...can be your Commander
Sewer NemesisSewer Nemesis and UchuulonUchuulon both have varying stats based on cards in graveyards or creatures on the field, respectively
Creatures with the Prepare keyword show up in these dual-bottomed card frames (like Adventures and Omens), on the left you'll see any relevant stats for the creatures, and on the right in their own little box, with its own mana cost, you'll see the spell they need to "prepare" to cast