Before watching the movie:
I’m not sure if Matilda is intentionally being invoked by the posters, or if it’s more of a coincidence of starring Mara Wilson and having a 90s “whimsical fantasy” aesthetic. The story isn’t much like Matilda at all really.
Anyway, the poster design wouldn’t have gotten me interested (I think I liked Matilda, but if I wanted to see it again I could just see it again. Actually, I ought to see it again), but it’s again in the big, cheap collection of movies I recently got, and the description on IMDB shows potential. But what really got me interested was the tagline. “Anabel made a wish. Murray made a mess.” That’s almost certainly an oversimplification, but it suggests a fun, haphazard style of accidental magic.