Sword of the Heroic Champion

Weapon (any sword), legendary (requires attunement)

This graceful steel blade is engraved with heraldic beasts, while the hilt is decorated with silver and gold filigree. You gain a +3 bonus to attack and damage rolls made with this magic weapon. While holding this sword, you and all friendly creatures within 15 feet of you are immune to being frightened.

In addition, when a creature you can see attacks a target that is friendly to you, you can use your reaction to move up to 15 feet and make one melee weapon attack with advantage against that creature. This movement does not provoke opportunity attacks.