Smite Effect: Shield bash that does damage and knock back.
Smite always hits a target in range, so Attack Rating does not matter when using this skill.
Smite does not work with Life/Mana % Steal.
Smite is a weapon skill and thus is affected by Attack Speed (e.g. 'Fanaticism') and is not affected by Cast Rate (e.g. -of the Apprentice). Smite works with any "X% Chance to cast level Y (spell) upon striking" ability on your weapon.
Smite does not receive added damage vs. undead with the Sanctuary aura.
The Fire/Cold/Lightning damage added to attacks with the Holy-Fire, Holy-Freeze, and Holy-Shock auras do not add onto Smite damage.
Smite can steal life with life tap cursed on target.
Smite can also deal crushing blow and open wounds damage, but not deadly strike and elemental damages.
Using Smite will reduce the durability of your weapon NOT shield.