So far in 2020, we've been averaging about one per month (and if you go back to the initial release in December, we've actually had 13 individual drops in three months, making the average closer to four drops per month since the series was announced), although the average is somewhat complicated by how you count themes that come with multiple drops, like the original Theros Gods during Worlds in February (technically, the Gods were five individual but related drops, although there is an argument for counting them as one big drop since buying all of the drops together was an option)
These are functional sets with strong gameplay cards, but their lack of iconic Pokmon or standout artwork keeps secondary market values modest
The only discerning difference other than the artwork to me is the year at the bottom which looks correct, so it seems normal, no
Or heck, even those Scene boxes personally
Are Knights Good
The same goes for delirium cards like Fear of Missing Out, where a single sorcery in the graveyard puts you closer to maximizing the card