Here are some team-building ideas with Polaris. Important! make sure to check out the best builds for Polaris here as not only synergies are important, you also have to get the hero built on point in order to work well.
Also some really important background info you should have in mind is taking a look at the tier list of all heroes in Hero Wars here and also the meta teams overall in Hero Wars here.
Good Teams with great Polaris synergies – ready to use
Here are several teams that use Polaris and work well overall and that you can use the way they are:

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Conclusion
As you can see, there are a ton of options to build a team around Polaris. If you have any more questions or other heroes that you believe should be listed here, please post a comment below.
Given Polaris’s synergy with control heroes, I found this team to be pretty good: Cleaver, Arachne, Isaac, Polaris, Martha.
will test that setup 🙂