Flash of insight
warlord utility 2
Melee weapon
Trigger: an enemy is hit by an at-will weapon attack from the user
Target: the triggering enemy
Effect: "You knock the target prone or push the target a number of squares equal to your Intelligence or Wisdom modifier."[MP2:86]
Flash of insight is an encounter power available to warlords at 2nd level.
CharOp Evaluation: Average [Char-op Warlord]
Prone is nice, as is forced movement, but even together, this is somewhat lackluster, especially since it only triggers on at-wills rather that any melee strike. Generally, you should only consider it if you're in desperate need of forced movement.