“Syllabus, schmillibus Part 1”
Are you starting the semester with a few old syllabi and a "good luck with that?" Before you throw your hands up and copy and paste bits from this one and that, consider this.
Your syllabus is a contract between you and your students. Tell them what you expect, what's acceptable, and what isn't. It can head off some big problems.
It should also share what students will get out of the class - in other words, what YOU are supposed to teach them. If that information is not in the syllabi you have been given, you must find out what the SLOs or CLOs are. And if you don't know what those abbreviations stand for, you really need to listen to this episode.