Particularly important is Three Tree City, which could well be one of the best kindred cards printed in a good long while
Job select is a new triggered ability found on some Equipment in this set
Jill, Shivas Dominant // Shiva, Warden of Ice Jill, Shiva's Dominant lets you bounce a problematic permanent, then later transforms into a saga that opens up combat with unblockable effects and even locks down all opposing lands for a turn
She is a key draw engine in Amethyst-Steel, as an early inkable bounce target for Madame Mims and a late game draw recovery engine after any potential board wipes
Victory Conditions Spider Spawning is far and away the best route to victory in mill-yourself decks, but even if you don't get any Spider Spawnings, or your opponent finds a way to deal with your Spider tokens, the deck can still win with relative ease