Teaching in Germany with an MFA?
Lectures in Germany are normally given by professors, who by law need to have a PhD (and sometimes a Habilitation). There may be some wiggle room for adjuncts, but normally Wissenschaftliche Mitarbeiter—the research staff working under the professor—assist with teaching discussion or recitation sections as well as grading, but generally do not give lectures except in the case of absences by the professor. 

Part of this is because the funding for academic groups is based on the number of exams graded by a given chair. So faculty will be reluctant to give away lectures, and thus lose out on the “credit” associated with the teaching. 

There might be a room for an exception if there is a vacancy due to retirement or poaching. Otherwise, it’s probably hard to get a university lecture with just a master’s degree.