4SRD:darkling light

4SRD > Darkling Light

Darkling Light: You have the darkling light Dark Elf racial ability.
A flickering halo of purple light surrounds the target, making it easier to hit. (Swift Action, Ranged within 50 feet)
Once per encounter, you can attack one creature (Intelligence,Wisdom or Charisma +4 vs. Reflex. Increase to +6 at 11th level and +8 at 21st level). If you hit, then until the end of your next turn, all attacks against the target have combat advantage, and the target cannot benefit from invisibility or concealment.
(Special: When you create your character, choose Intelligence, Wisdom, or Charisma as the ability score you use when making attack rolls with this power. This choice remains throughout your character’s life and does not change this racial ability’s other effects.)