You transform your body to become a living metal, allowing you to shrug off attacks that would cripple weaker creatures.
Psychic Focus. While focused on this discipline, you gain a +1 bonus to AC.
Iron Hide (1-7 psi). As a reaction when you are hit by an attack, you gain a +1 bonus to AC for each psi point you spend on this ability. The bonus lasts until the end of your next turn. This bonus applies against the triggering attack.
Steel Hide (2 psi). As a bonus action, you gain resistance to bludgeoning, piercing, and slashing damage until the end of your next turn.
Iron Resistance (7 psi; conc., 1 hr.). As an action, you gain resistance to bludgeoning, piercing, or slashing damage (your choice), which lasts until your concentration ends.