What are the checks the judicial branch has on the legislative branch?

The check that the Judicial branch may have over on the legislative and executive branch is that by declaring laws as unconstitutional. The legislative branch are the ones who is making the law, and the executive branch is the one who has the power to veto over the law which makes it harder for the legislative to pass it. However, the Judicial branch is the one who has the power to make it unconstitutional.