So, Strixhaven mythics are slightly (for now) less expensive on Arena than they are in paper and significantly more expensive on Arena than they are on Magic Online , despite the fact that Arena cards have less utility since they are locked into your account forever, while you can sell or trade your cards both in paper and on Magic Online if you wish
Sunscape can destroy flyers, Stormscape can destroy creatures, Nightscape can bounce up to two creatures and destroy lands, Thunderscape can go after enchantments, and Thornscape can go after artifacts
Guzma is classified as a 2-Stars card in the Celestial Guardians set
Of the three full Tyranid Genestealer cards, I think they do a nice job of capturing that element
Card draw like Blacks life-for-cards swap is doubly onerous
In theory you can have 15 lesson cards in your sideboard in Constructed decks