Thrall to Demon
(Champions of Ruin, page 23, DnD 3.5)
[Vile]
You formally supplicate yourself to a demon prince. In return for this obedience, you gain a small measure of the demon prince's power.
Prerequisite
Chaotic evil alignment
Benefit
Once per day, while performing an evil act, you can call upon your demonic patron to add a +1 luck bonus to any one attack roll, saving throw, ability check, skill check, or level check.
Special
This feat can only be taken once. A character who takes this feat cannot also take the "Disciple of Darkness":feats/champions-of-ruin--27/disciple-of-darkness--626/ or "Scion of Sorrow":feats/champions-of-ruin--27/scion-of-sorrow--2522/ feat.