Ars Magica is a role playing game set in Mythic Europe -- nominally 1220 AD, but a land inhabited by faeries, daemon and other magical creatures. Its a great game that I've enjoyed playing over the years.
Ars Magica set the benchmark for magic in fantasy roleplaying. It pioneered the storytelling style of roleplaying that has become so popular today. Its setting, Mythic Europe, sparked the imaginations of fantasy fans and history enthusiasts alike. The 272-page fourth edition introduced improved systems in several key areas such as combat, character advancement, and covenant generation. This version of the game retained and improved upon Ars Magica's powerful and flexible magic system - widely regarded as the best rules for magic in all of gaming.