Then no one can cast those two things you destroyed (you too) until EOT of your next turn, so you will be the first to cast them after casting this sorcery on your main phase
The next big set will be Foundations in November, but that will have a lot of reprints
At the time, these Creature types were largely created for flavor purposes
Starting out as a new collector means theres a lot to learn and we know exactly how confusing it is
I know Winnie the Pooh is supposed to be Christopher Robin's best friend, but this Christopher looks like he'll be best friends with Stitch - Rock Star
While fetch lands and shock lands are out of reach, a combination of guildgates, common tap-lands (like Scoured Barrens), and bounce lands (like Simic Growth Chamber) can create a surprisingly consistent foundation