You were trained at a witcher school, and are trained in their fighting methods and have mastered the use of longswords in combat. You gain the following benefits:

• Longswords count as having the defensive and finesse weapon properties when you wield them.
• Parry. When you are wielding a longsword or shortsword, you can use a bonus action on your turn to prepare a parry. The first melee attack against you before the start of your next turn has disadvantage.
• Riposte. When a creature misses a melee attack against you, you can use your reaction to make one weapon attack against the creature if it is within your reach.