Shield Mastery

Each time you Block, you regenerate mana equal to [s2]% of your maximum mana and you gain Armor equal to [s1]% of your shield's armor value, stacking up to [s3] times. You also always gain [s1]% increased chance to Block and [s2]% increased Block value. In addition, each time you use a Shock ability, you gain [s2] Spell Damage for each point of your defense skill beyond ${[PL]*5}. Lasts [d].