Otherworldly Lore
Dungeoneering Utility 2
Something about the aberrant horror's movements strikes a chord, you know just how to fight it.
Close burst 5
Target: One aberrant creature you can see in burst
Effect: You make a Dungeoneering monster knowledge check to determine the target's resistances and vulnerabilities. If the check succeeds, you or one ally who can hear you gains a +4 power bonus to his or her next attack roll against the target before the end of your next turn.
Otherworldly Lore is an encounter power available to characters who are trained in dungeoneering at second level.[PH3:168]