Based on Zechariah 9:12 ("I will render double unto you"), a play on the name of the Mishneh Torah.
Rabbi Vidal di Tolosa
The Maggid Mishneh provides a thorough explantion of Maimonides' rulings, tracing them back to their sources, explaining the reasons for his decisions, and defending them against critics, especially the Ravad. Occasionally Rabbi Vidal expresses disagreement with Maimonides.
The Maggid Mishneh encompasses only six of the Mishneh Torah's fourteen volumes.