Daddy's Little Devil

The player summons the power of the Devil and causes a giant hand to erupt from the ground and target one creature. If this creature has 10 HP or less, they are automatically killed and pulled down to hell and can not be healed or revived. If they have more than 10 HP they must make a DC 15 DEX save to avoid being launched into the air by the erupting hand. On a failed save, they are launched 20 FT. into the air and take 2d6 fall damage and 2d4 bludgeoning damage, or half that on a successful save. 

This spell can only be used by Tieflings and cast once per long rest as part of their infernal legacy. "Daddy's Little Devil" is learned at level 5.