Choose an ability score to increase by 2, and an ability score to increase by 1.

Who knows man.

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

Your base walking speed is 30 feet.

Thanks to your otherworldly heritage, you have superior vision in dark and dim conditions. You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can’t discern color in darkness, only shades of gray.

You have resistance to nonmagical physical damage, as well as psychic damage.

You know the Minor Illusion cantrip. When you reach 3rd level, you can cast the Hellish Rebuke (psychic damage) 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. Intelligence is your spellcasting ability for these spells.

You can speak, read, and write Common and Deep Speech.