Accursed Tiefling

Appearance. Accursed tieflings vastly differ from their brethren. Instead of a pair of horns, they have dozens protruding from their skull, akin to a never-ending cancerous growth. Their monstrous shape is furthered by the eye-like protrusions that cover the horns, although they are nothing more than bony sprouts waiting to burgeon. Their skin is thick, covered in bestial fur, and their muscular limbs are grossly misshaped; the human half of their heritage has nearly all but vanished.
Ability Score Increase. You choose one ability score to increase by 2, and another score increases by 1.
Age. Tieflings mature at the same rate as humans but live a few years longer.
Size. Tieflings are about the same size and build as humans. Your size is Medium.
Languages. You can speak, read, and write Common and Deep Speech.
Speed. Your base walking speed is 30 feet.
Child of the Black Goat. You have a climbing speed equal to your walking speed.
Darkvision. Thanks to your eldritch 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.
Eldritch Resistance. You have resistance to necrotic damage.
Legacy of a Thousand Young. You know the spare the dying cantrip. When you reach 3rd level, you can cast the false life spell as a 2nd-level spell once with this trait. When you reach 5th level, you can cast the mirror image spell once with this trait. You regain the ability to cast these spells with this trait when you finish a long rest. Constitution is your spellcasting ability for these spells.
Call of the Brood. If a Blood Moon is out while you are asleep, you have a dream (as per the spell, save DC 16). In this dream, the Black Goat places a compulsion within your mind, ordering you to carry out some activity as a torrent of images and sensations. When you awaken, you are automatically affected by a Suggestion spell (save DC 16, cast as a 7th-level spell) in addition to the effects of dream, and must carry out the order.