Tieflings initially have +2 Wisdom and -2 Charisma.
Ability
Effect
Infernal
Passive. You take half damage from fire and cannot be ignited.
Alacrity
Passive: All spells cost -1 action to cast, down to a minimum action cost of 1.
Blood Link
24 actions. You link yourself to a willing ally. For 1 action, you or that ally may transfer up to 1d10 HP between each other. This cannot bring one of you to 0 HP. Only usable once per day. Link lasts until a new link is made.
Upgrade: Up to 2d10 HP.
Upgrade: Up to 3d10 HP.
Devil's Tongue
Passive. You permanently gain +3 to a Charisma skill of your choice, as well as a critical success on a roll of 19-20.
Upgrade: +3 to the same Charisma skill, as well as a critical success on a roll of 18-20.
Upgrade: You may take the higher of 2d20 rolls for that skill.
Outcast
Passive. You gain +3 Culture and Insight, as well as a critical success on a roll of 19-20.
Upgrade: You gain +3 Culture and Insight, as well as a critical success on a roll of 18-20.
Upgrade: You may take the higher of 2d20 rolls for Culture and Insight.
Wanton
Passive. You permanently have +1 action each turn.