System: Pathfinder 1st Edition
Prerequisites: Con 13, tiefling.
Benefit: You gain a +1 bonus on saving throws against spells and spell like-abilities from the charm subschool and a +2 bonus on Constitution checks to stabilize when you are reduced to negative hit points (but not dead). Each time you take Bleed or Blood Drain damage; if the inflictor of that damage is adjacent to you they take 1 fire damage.
Prerequisites: Infernal Blood, Tiefling, character level 10th.
Benefit: You gain a pair of either leathery bat-like wings or black feathered wings that grant a fly speed of 30 feet (average maneuverability) if wearing light armor or unencumbered, or 20 feet (poor maneuverability) with a medium or heavy load or medium or heavy armor. Fly is a class skill for you.