Japanese Pokmon cards can differ from English cards in all these categories, so lets dive into why that is the case
Apparently when you add a mana to Monastery Swiftspear, you get flying and an additional toughness
Like, they are gonna design whole sets of cards with awesome art that are never gonna actually interact with the real TCG
Allowing our fragile squirrels to come back swinging after a [casthaven]Wrath of God[/casthaven] effect is going to be essential
There are lots more sub-categories of cards you'll encounter on your Pokmon TCG journey, from Supporter Trainers to special ex, V, VMAX, and VSTAR Pokmon cards - but you don't need to worry about that stuff yet
I think if there are only, say, five or ten cards that use a mechanic, then its easier to just cut that mechanic