Tons of life, Tons of regen, Tons of damage, Tons of resists. Decent armor with grace, some block because of shield + Tempest Shield. Easy Atziri kills. Can be expensive (Kaom's heart), but can still be made to work with inexpensive gear.
Elemental Equilibrium, Iron Reflexes.
Just wanted to add an updated Righteous Fire Build In the Path of POE library. This is quite a template build guild, so feel free to customize it. Righteous fire+burning damage+concentrated area