Replaces Enlarge Person Spell-Like Ability
Ironskinned
The soul of the earth infuses some duergar, giving them the ability to harden their skin. Duergar with this racial trait can use ironskin once per day as a spell-like ability, using their character level as their caster level.
Replaces Invisibility Spell-Like Ability
Blood Enmity
Duergar have long warred against their dwarven cousins and the hated drow. Duergar with this racial trait receive a +1 racial bonus on attack rolls against humanoid creatures of the dwarf or elf subtypes.
Magical Taskmaster
Some duergar demonstrate magic of a more insidious kind than the rest of their kin, a difference that is often taken to be a sign of Deep Duerra's blessing. They can use charm person once per day as a spell-like ability. The save DC is equal to 10 + 1/2 duergar’s Hit Dice + duergar’s Wisdom modifier.
Twilight-Touched
While most duergar have the power to become invisible, a few are instead able to extinguish the light around them. Duergar with this racial trait can use dust of twilight once per day as a spell-like ability, using their character level as their caster level.
Replaces Spell-Like Abilities
Deep Magic
Duergar spellcasters labor long to overcome the inborn spell resistance held by so many of their underground foes. Duergar with this racial trait receive a +2 racial bonus on caster level checks made to overcome spell resistance and a +2 racial bonus on dispel checks.
Replaces Stability, Dwarven Immunities
Dwarf Traits
Duergar can select any
Dwarf Alternate Racial Traits that replaces stability. They can select dwarf racial traits that replace the hardy dwarf racial trait by giving up duergar immunities instead.
Replaces Superior Darkvision, Light Sensitivity
Daysighted
The cruel light of the sun harms some duergar less than others. Such duergar lack the light sensitivity racial trait, but have darkvision of only 60 feet.
