Tiefling (Variant; Hellfire)

Appearance

Your tiefling might not look like other tieflings. Rather than having the physical characteristics described in the Player's Handbook, choose 1d4+1 of the following features: small horns; fangs or sharp teeth; a forked tongue; catlike eyes; six fingers on each hand; goatlike legs; cloven hoofs; a forked tail; leathery or scaly skin; red or dark blue skin; cast no shadow or reflection; exude a smell of brimstone.

Hellfire

You know the thaumaturgy cantrip. Once you reach 3rd level, you can cast the burning hands spell once per day as a 2nd-level spell; you must finish a long rest in order to cast the spell again using this trait. Once you reach 5th level, you can also cast the darkness spell; you must finish a long rest in order to cast the spell again using this trait. Charisma is your spellcasting ability for these spells.