The answer is on the tip of your tongue.

Daily   ✦     Martial
Free Action      Personal

Trigger: You make a Dungeoneering or a Streetwise check to remember or discover a useful bit of information

Prerequisite: You must be trained in Dungeoneering or Streetwise.

Effect: If you are trained in the skill, don't roll for the check; you are considered to have rolled a 25 and then add your skill check bonus. If you are not trained in the skill, you gain a +5 bonus to the check.

Published in Martial Power, page(s) 84.