If there was ever a "magic prompt" this one comes close:

    Brainstorm N ways to do X. Sort by probability.

Don't outsource all of your thinking.

I've found this surprisingly effective. Higher "thinking levels" may result in more than one approach being considered, but you can also tell your LLM to do brainstorming explicitly: https://photostructure.com/coding/claude-code-replan/

I've found this to be useful, but it still requires the user to have the capability to understand/evaluate the options.

If you have a competent user it can be quite powerful