Shards of the Citadel

From the introduction:

Shards of the Citadel is an urban fantasy, roleplaying game. Players take on the roles of mages working for a secretive organization known as The Citadel, whose duty is to track down and contain dangerous magical artifacts known as Shards.

Sessions typically follow a Monster of the Week structure, where players investigate supernatural disturbances, confront threats, and unravel the mysteries surrounding corrupted Shards. However, the game is flexible enough to support longer campaigns and character-driven storytelling.