Improved Pact Weapon (The Hexblade)

This is a free feat if you meet the prerequisites: Warlock 2024 edition, Pact of the Blade eldritch invocation, The Hexblade patron (XGtE).

If a melee weapon is bonded as both your Pact weapon and as your Hex weapon, it gains a +1 magical bonus to its attack and damage rolls, unless it already has an equal or higher bonus. This bonus increases to +2 at character level 5 and to +3 at character level 11.