Duergar Mindshaper
(Races of Faerun, page 162, DnD 3.0)
[Racial]
You are accomplished at using the power of your mind to overcome weaker personalities.
Prerequisite
Gray dwarf
Benefit
You gain +1 spell power (+1 on save DCs and a +1 bonus on checks to overcome spell resistance) on enchantment spells and spell-like abilities.