I've been posting my thoughts on all the previews (without having tested any of them), so here's day 4.
In day 2, we saw Herb Gatherer, which was weak but had a resource that you might miss out on if you didn't grab it right away. Student has a similar dynamic. As a trasher it seems mediocre. It only trashes one, decreases your handsize, the only additional benefit is the favor, if you trash a copper. Topdecking is nice I guess, but if the card is so mediocre I have to imagine topdecking same card is also mediocre. Nonetheless, sometimes you need a trasher (or the favors), and you don't want to miss out.
Conjurer is the workshop that keeps on workshopping. Good when workshop is good I guess. It doesn't synergize with other Wizards though.
Sorceror sounds familiar. Unlike Familiar, it sometimes misses, and doesn't stack. Good if your opponent foolishly skipped Student and there no other trashers.
Lich doesn't strike me as very good? Like Tactician, but less opportunity for weird workarounds. Okay, you can skip a Voyage turn, that's good. You can play it on your last turn, but well you spent $6 on this card and you're only playing it once? I suspect the true power house here is the bottom ability. Remodel into Province + Duchy and you keep the Lich to remodel again on the same turn? That's game winning in the right situation.
Merchant Camp, the village that keeps villaging. I'd get one for reliability, but to topdeck two each turn seems like it could make your deck less reliable, not more.
Highwayman kind of surprised me, because I thought the issue with attacks like these was that they really dragged the game down when stacked with Militia attacks. Well anyway, I think you get this more for the draw than for the attack. It's slightly better than Haunted Woods because you could theoretically play it every turn.
Island Folk... So, if Underling is a cantrip that gives you an extra turn every 5 plays, would it be good? Absolutely. I mean, even on a basic level, an extra turn is +5 cards +1 action +1 buy, that's really strong. In an engine, it's even better.
I take it you can't use Order of Masons during game setup? Hey, I would totally buy a single Underling to maintain two estates in exile. That seems competitive with trashing options. It may not work with engines that shuffle multiple times per turn though.