Mage Slayer

From publisher blurb:

Want to play as a Ranger that hunts dangerous magic users and spell casters afflicted with tetherbane?

Mage Slayers guard the world against threats from powerful magic users and spellcasters sick with tetherbane. Prolonged use of magic leaves a mystical residue on a spellcaster’s life essence. Over time, the residue leads to a condition known as tetherbane, and as the condition worsens, the spellcaster begins to lose control. Many Mage Slayers find themselves affiliated with the Creed, an organization that acts as an independent law enforcement against magical threats.