Bloodline of Asmodeus (Tiefling)

The Tieflings connected to Nessus command the power of fire and darkness, guided by a keener than normal intellect, as befits those linked to Asmodeus himself.

ability score increase: Your Intelligence score increases by 1.

age: Tieflings mature at the same rate as humans but live a few years longer.

alignment: Tieflings might not have an innate tendency toward evil, but many of them end up there. Evil or not, an independent nature inclines many tieflings toward a chaotic alignment.

Size: Medium

speed: Your base walking speed is 30 feet.

Languages: You can speak, read, and write Common and Infernal.

parent race: Tiefling

race features:

Infernal Legacy

You know the Thaumaturgy cantrip. Once you reach 3rd level, you can cast the Hellish Rebuke spell once as a 2nd-level spell. Once you reach 5th level, you can also cast the Darkness spell once. You must finish a long rest to cast these spells again with this trait. Charisma is your spellcasting ability for these spells.