The Battle Master subclass is not in the Systems Reference Document. I am designing a Wild West supplement for d&d-5e, to be published on DriveThruRPG, and I want to add a few Gun-Themed maneuvers that can be applied when firing a gun. Can I legally say “If you have access to maneuvers, the following maneuvers are added to the list of maneuvers available to you.”, and then list maneuvers that refer to superiority dice?
I cannot figure out if this would be considered a violation of product identity or not.