Capable of attacking and blocking, many creatures primarily act in combat and are often a deck's primary source of dealing damage
7) 1994 Fleer Marvel Masterpieces Holofoil Spider-Man
I learned a lot about it by reading Jesse Mason, a self-titled game design critic who wrote comprehensive reviews of sets from other TCGs from a holistic perspective: looking at the themes and inspirations behind each set (or, to be more accurate, each block of sets), it's aesthetic, how the cards played both in Constructed and Limited (drafts are an important part of other games, unlike Pokmon), etc
F2P players can still collect cards, level up, and participate in battles, but they may face some challenges due to the slower rate of progress compared to paying players
1st Edition cards from 1999-2000 are almost always worth checking