I need to do so much math for various openings, especially given how things can be different based on 4/3 vs 3/4.
Um, play effect of card is pretty mediocre, but not really that awful. Both woodcutter and chancellor give you some things you like, especially in engines.
Much more interesting for buy effect. Obvious thing is to get cards which are good for you but not them... too many terminals? If I'm playing a money deck, against their engine, silvers? In any case, you are probably going to be able to end the game pretty fast, not only because this slams piles down fast (really fast), but also because it gives both players bonuses... I guess maybe it gives penalties sometimes, huh? There isn't much reason not to just pick bad cards a lot? Well, you have to take one of these to do it, that's a reason. Probably usually bonuses then. Which can end the game fast as well - we've seen it on Governor, though I suspect this isn't as good as governor by a good margin. Well, maybe. Card is probably fairly good, because of that on-buy. But there is opportunity cost I guess. I doubt it's broken.