They are all strictly inferior to other cards. In fact, they are all inferior to attacks.
Woodcutter//Goons
Smithy//Rabble
Ruined Library//Witch
Ruined Market//Goons
Ruined Village//Familiar
Necropolis//Village (OK, OK, this one's not an attack)
Monument//Goons (Assuming you buy one card)
Abandoned Mine//Swindler
Other cards could fit in, I just listed one example.