If the DM wants you to deal with guards, you will deal with guards.

Drop some anti magic pillars and buoys in the harbor. No druid is gonna like being popped out of wild shape at 30 meters depth.

I have not being studying 3 different blockstats for you to skip me using them AGAIN

It's not malicious. I just can't resist the trope of having that epic spider v. praying mantis battle that's comparably totally inconsequential at standard scale. Makes me giggle.

Hey, wasn't that in an old issue of Dragon magazine? (/j)