Humean accounts of laws of nature fail to distinguish between dynamic laws and static initial conditions. But this distinction plays a central role in scientific theorizing and explanation. I motivate the claim that this distinction should matter for the Humean, and show that current views lack the resources to explain it. I then develop a regularity theory which captures this distinction. My view takes empirical accessibility to be one of the primary features of laws, and I identify features laws must have to be empirically accessible. I then argue that laws with these features tend to be dynamic