Well, you probably know why this is getting written. But in case you don't, it's a response to
this thread, which, by the way, I highly recommend.
This isn't a thread to throw hate at the worst cards in dominion. Yes, we all hate the chancellor and thief and transmute and counting house and scout already. But no, this is a card to discuss which cards we like the least. So even though Jack of All Trades is really strong, lots of people are going to dislike it, because they think it makes the games formulaic. Indeed, lots of the most annoying cards are strong - and their strength against you is part of what makes them annoying! At the same time, cards don't HAVE to be strong to be hated - we're looking at you, saboteur.
Anyway, I'm probably going to post a more comprehensive list later on, but for now, I'm going to get the ball rolling with a couple cards I don't expect to be SO popular on this list.
Masquerade: This is absolutely one of my least favourite cards. It would be much less unpleasant if it weren't actually really good. But it is - the combination of card draw and trashing. And if it were just that, it would be fine. BUT... the passing. Well, it's sorta often like an attack, and an unblockable one. So not only does it lead to the most infamous pin in the game, in all its forms, but it also is just annoying as a follow up after a 'normal' discard attack. But I think the biggest thing is... it's really hard to ignore the card. It's really hard to say 'yeah, I don't need masq this game'. Because normally you do. But it also doesn't look like it really goes super-great with lots of stuff either, at least in my head. Which gets my mental pattern into this rut where it just wants to inertially default to BM-masq every game it's on the board. Which is good, but not THAT good. And annoyingly boring.
Minion: What a weird card. I hate when I play it for money, because it's just a silver then, you know? And then I hate how formulaic your basic BM-minion deck is. And it feels that way too often, discarding means you're just spinning your wheels. But if you try to add stuff to it, you get to "well, shoot; do I pitch this hand, like I would in the canonical minion deck, or do I forego that, because this card won't come back if I cycle that much?" So, it's certainly possible to slam some villages in and basically just use minion as the attack+card draw portion of your engine, with some other terminals (or I guess, non-terminal cards and maybe not villages)... but somehow I tend to overlook this possibility until it's too late, OR to get the terminals before the villages in my turns... le sigh. And that discard attack, it's surprisingly strong.