As a newer player, I think that I mostly just liked looking at other peoples decks, and almost as the art implies, Thought Erasure was a good window into that
Zul Ashur has two abilities, one is a solid ward effect, one that forces your opponent to lose two life if they want to target her with a spell or ability, which isn't too bad but pretty easy to work around
Usually this happens when you are printing an A4 sheet in a Letter sheet
It does mean, however, that reprinted cards that dont have new art will be able to use the same card styles as the original printing
Generally no, damage is still dealt to blockers
There are usually better one mana options than Universal Automaton, but it gets a lot better when it becomes a one mana kill spell