Demonologist

You know well about fiends, how they act and how to deal with them, using words or attacking. Due to intense study of these creatures, when you acquire this talent, you earn the following characteristics:

• You gain Advantage in Attack Rolls and Resistance Rolls agains Fiends; Also, you gain Advantage on Intelligente (History) checks to have listen some information about a specific Fiend you're seeing or even listening or reading about;
• When you hit a Fiend with an Attack you can add your Intelligence Modifier as extra bonus;
• Lower class fiends are more succetible to banishment. Choose a Fiend with DC with a maximum of half your level, rounded down. Keep it under focus of an exorcism ritual of 10 minutes (keep it tied or unconscious, for example) and make an Intelligence check against the Fiend's CR level multiplied by 5. On a success, you can banish the Fiend back to it's Plane of Existence, leaving behing a scorch mark on the floor and a burnt smell in the air.