Drow Heritage: Half-elves with this trait count as drow for the purposes of any effect related to race, including prerequisites. This racial trait replaces the ability to choose any language as a bonus language, instead limiting the character to the bonus languages offered to drow. Source PPC:BoS
Drow Magic: A few half-elves with drow ancestry exhibit the innate magic of that race. Half-elves with this trait have drow blood somewhere in their background, and can cast dancing lights, darkness, and faerie fire each once per day, using the half-elf's character level as the caster level for these spell-like abilities. This racial trait replaces the adaptability and multitalented racial traits.
Dark Half (Su)
By allowing the dark forces to overcome you, You can enter a state of instinctual cruelty as a swift action.
While you’re manifesting your dark half, you increase the DCs of your psychic spells by 1, gain a +2 morale bonus on Will saves, and become immune to fear effects. Whenever you cast a spell that deals damage while manifesting your dark half, you can cause one creature that took damage from the spell to also take 1 point of bleed damage. The amount of bleed damage increases to 2 points at 5th level and to 1d6 points at 13th level. While manifesting your dark half, You can’t use any Charisma-, Dexterity-, or Intelligence-based skills (except Acrobatics, Fly, Intimidate, and Ride) or any ability that requires patience or concentration other than casting spells using psychic magic, using phrenic amplifications, or attempting to return to normal. You can attempt to return to your normal self as a free action, but must succeed at a concentration check with a DC equal to 10 + your caster level. If you fail, you continue to manifest your dark half and can’t attempt to change back for 1 round.
You can manifest your dark half for a number of rounds per day equal to 3 + 1/2 your psychic level + your Charisma modifier; when these rounds are expended, you return to your normal self without requiring a concentration check.
Drow Nobility (You may use detect magic as a spell-like ability at will, and add feather fall and levitate to the spell-like abilities that you may use once each per day. Your caster level is equal to your character level.)
Elven Immunities: Half-elves are immune to magic sleep effects and gain a +2 racial saving throw bonus against enchantment spells and effects
Wary: Many half-elves have spent their long lives moving from place to place, often driven out by the hostility of others. Such experiences have made them wary of others' motivations. Half-elves with this trait gain a +1 racial bonus on Sense Motive and Bluff checks. This racial trait replaces the keen senses racial trait.
Low-Light Vision: Half-elves can see twice as far as humans in conditions of dim light.
