Potere Arcano Deluxe

Potere Arcano is a tabletop RPG in which each player plays a powerful spellcaster known as a Mage. Unlike most RPG's, Potere Arcano is designed to take place over long periods of in-story time, with months or even years passing between major events. In those months, the Mages spend their downtime studying and growing stronger.

Inspired by Ars Magica by Atlas Games. To be clear, there was an eariler version of this game released on DriveThruRPG; that is also me.