Knight's Vow is a legendary item in League of Legends. Knight's Vow costs 2200 gold and grants 300 Health, 45 Armor, 15 Ability Haste and a Unique Passive (SacrificeWhile your Worthy ally is nearby, redirect damage they take to you and heal based on the damage dealt by your Worthy ally to Champions.<active>ACTIVE</active> (0s)<active>Pledge</active>Designate an ally as Worthy.).