All Witchers have a personal Beastiary. The Witchers Bestiary is where a Witcher records the strengths and weaknesses of all enemies faced. When facing a beast or monster recorded in the bestiary, you may use a bonus action to add your survival check bonus to hit and saving throws in regards to that creature until the creature either dies or 10 rounds have been taken, you must finish a long or short rest before you can use this feature again. After you are in combat with a creature and kill/subdue it, take 5 minutes to study it before adding it to your Witcher Bestiary.

Notes: Twice Proficiency: Ability Checks, Buff, Debuff