Revenant Blade Feat

General Feat (Prerequisite: Level 4+, Strength or Dexterity 13+)

You gain the following benefits.

Ability Score Increase. Increase your Dexterity or Strength score by 1, to a maximum of 20.

Defensive style. While you are holding a double-bladed scimitar with two hands, you gain a +1 bonus to Armor Class.

Reactive Strike. If you attack with a double-bladed scimitar as part of the Attack action on your turn, you can use a bonus action immediately after to make a melee attack with it. This attack deals 1d4 slashing damage on a hit, instead of 2d4.