Your Mark of Detection flares, sending out darts of energy to hunt down hidden foes and reveal their locations.

Encounter  
Standard Action      Ranged 10

Effect: You can see invisible creatures within 10 squares of you and within your line of sight until you hit or miss with this power.

Target: One creature

Attack: Charisma or Wisdom + 4 vs. Reflex. The attack ignores any cover and any concealment if the target is within 10 squares of you.

Hit: 2d10 + Charisma or Wisdom modifier.

Published in Eberron Player's Guide, page(s) 73.