Too many to list. We'll miss them all.
Policies on becoming a wizard are currently in the queue for being reviewed and formalized. Historically, to become a wizard on Dune you must request the Wizard Application Form be MUD mailed to your character. You will fill out the application form and apply for a position, from there your application will be screened and a decision will be made. If the consensus is that you'll be a valuable member of the team you will be given a limited access wizard character (likely on DevDune - the Dune test server) and expected to create a small area.