at 5th level you get leathery black wings with a flying speed of 30ft. At level 10 it increases to 50ft

Your dexterity score increases by 2, and one score of your choice increases by 1.

Demons mature at the same rate as humans but live forever as long as they or their chosen swayer doesn't die.

chaotic evil.

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

Your base walking speed is 30 feet.

Thanks to your infernal 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.

Hailing from the depths of hell, you have become accustomed to fire. You have resistance to fire damage. Additionally you are immune to fire damage that does less than 5 damage. At 5th level it increases to 10 damage, at 10th level it increases to 15 damage, and at 15th level it increases to 20 damage.

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