Incubus Tiefling (5e Race Variant)
From D&D Wiki
Drawing from the original dream fiends, tieflings are sometimes born with their power of suggestion and shapechanging. These are often used for seductive and insidious means, much like the original nature of the succubi and incubi.
This race variant replaces the infernal legacy trait. You instead gain the legacy of allure and seductive trait.
Legacy of Allure. You can cast the charm person spell once as a 1st-level spell. Once you reach 3rd level, you can also cast the alter self spell once. You must finish a long rest to cast these spells again with this trait. Charisma is your spellcasting ability for these spells.
Seductive. You are proficient in the Persuasion skill.