Initiate of Justice (3.5e Feat)
From D&D Wiki
Initiate of Justice [Exalted]
Prerequisite: Weapon Focus (with deity’s favored weapon) Must be of good alignment, 3rd level or higher
Benefit: Grants a Smite Evil attack 1/day with an attack bonus equal to Charisma modifier (minimum +1) and a damage bonus equal to total character levels. A paladin with this feat gains a +1d4 sonic bonus to damage on her Smite Evil ability.