Your Intelligence score increases by 1, and your Charisma score increases by 2.

Tieflings are about the same size and build as humans. Your size is Medium.

Your base walking speed is 30 feet.

you have resistance to electric damage

You know the thaumaturgy cantrip. When you reach 3rd level, you can cast the hellish rebuke spell as a 2nd-level spell once with this trait and regain the ability to do so when you finish a long rest. When you reach 5th level, you can cast the darkness spell once with this trait and regain the ability to do so when you finish a long rest. Charisma is your spellcasting ability for these spells.

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