Insightful Warning
Arcana Utility 6
As your foe unleashes its attack, you realize that you have read about this sort of danger and shout a warning to your friends.
Personal
Target: A creature you can see makes an attack roll for an area or a close attack that includes you as a target
Effect: You and each ally included as a target of the triggering attack gain a +2 power bonus to all defenses against it.
Insightful Warning is an encounter power available to characters trained in arcana at level 6.[PH3:165]