Historical Revelation
History Utility 6
When your ally struggles to recall an important fact, you supply a story to nudge hint or her onto the right path.
Close burst 5
Trigger: An ally within 5 squares of you makes a knowledge check and dislikes the result
Target: The triggering ally in burst
Effect: The target rerolls the knowledge check and uses either result.
Historical Revelation is an encounter power available to characters who are trained in history at sixth level.[PH3:170]