as an action, you envelop yourself in protective energy that locks you in place, all attack rolls made on you will automatically fail, you cannot make any actions, bonus actions, movement, or reactions and you are immovable, armor lock lasts until dispelled, requiring an action unless you are forced out of it by a dispel or a critical attack. once dispelled, a blast of concussive energy with a diameter of 10 feet emanates from you, anyone in this blast must make a con or dex save with a dc of 8+your spell casting modifier, if they fail this save, they will take 1d8 force damage, if they succeed, nothing happens.