Defensive Duelist

Complete guide to the Defensive Duelist feat in D&D 5e. Use finesse weapons to parry attacks, boost your AC as a reaction, and avoid devastating hits.

Prerequisite: Dexterity 13 or higher

Benefit

When wielding a finesse weapon, you can use your reaction to add your proficiency bonus to AC against one melee attack, potentially causing it to miss.

Mechanics

Defensive Duelist lets you parry incoming attacks with finesse weapons: **Parry Reaction:** When you are wielding a finesse weapon with which you are proficient and another creature hits you with a melee attack, you can use your reaction to add your proficiency bonus to your AC for that attack, potentially causing the attack to miss you. **The Math:** - Level 1-4: +2 AC - Level 5-8: +3 AC - Level 9-12: +4 AC - Level 13-16: +5 AC - Level 17-20: +6 AC **Important Details:** - You must be wielding the finesse weapon (rapier, shortsword, dagger, etc.) - Works only against melee attacks, not ranged or spells - Declared after the hit is announced but before damage - Uses your reaction (no opportunity attacks that round) - Scales with level via proficiency bonus

Synergies

Common Mistakes

Common Mistake
Thinking it works against ranged attacks - melee only
Common Mistake
Forgetting you need to be wielding a finesse weapon
Common Mistake
Not using it because you want to save your reaction - preventing damage is valuable
Common Mistake
Missing that it can turn hits into misses, avoiding critical hits
Common Mistake
Thinking it lasts for more than one attack
Common Mistake
Not realizing proficiency bonus scales, making this better at higher levels

DM Tips

DM Tip
Defensive Duelist is strong but uses the reaction, so it's balanced
DM Tip
Multiple attacks per round limit its effectiveness
DM Tip
High-damage single attacks make this feat shine
DM Tip
This feat is better at higher levels due to proficiency scaling
DM Tip
Consider it when balancing finesse weapon users vs. two-handed weapons
DM Tip
Defensive Duelist can prevent critical hits by making them miss

Sources & Further Reading