Deflector
Requires Prerequisite
Prerequisite
Dexterity 13 or higher
Description
When you are wielding a finesse weapon with which you are proficient and would be hit by a melee attack, you can use your reaction to add your proficiency bonus to your Armor Class against that attack.
Benefits
When you are wielding a finesse weapon with which you are proficient and would be hit by a melee attack, you can use your reaction to add your proficiency bonus to your Armor Class against that attack.
Source
Adventurer's Guide
a5e-ag_deflector