I'm searching for a western animated TV show about a mixed-gender group of kids who gain powers of a variety of Halloween monsters (The only one I'm certain of is that one of the girls gets to be a witch). This originally aired no later than some time in the 90s.
I think some kind of dark force was going to attack their town, and they had to figure out a way to stop it, possibly centering around an old church or cathedral. One line I recall distinctly was one of the girls said something like "I'm still a witch, so I've got the wits; so I know how to solve this problem". The show had previously mentioned that that "witch" and "wit" were cognates.