Command of the Elements is a notable passive skill.
6% increased Attack Speed while holding a Shield
40% increased Defences from Equipped Shield
Attack Damage Penetrates 4% of Enemy Elemental Resistances
24% increased Elemental Damage with Attack Skills
(Armour, Evasion Rating and Energy Shield are the standard Defences)
PoE 3.15 Changes
The Command of the Elements Notable no longer grants “Damage with Weapons Penetrates 4% Elemental Resistances”. It now grants “Attack Damage Penetrates 4% of Enemy Elemental Resistances”.