In DND 4e, I want to use the Battlemind At-Will power [Lightning Rush][1] (PHB3 p49)


  [1]: http://www.wizards.com/dndinsider/compendium/power.aspx?id=2634

while I am prone, with a normal speed of 6, with an enemy that is 6 squares away, one that is 3 squares away, and one that is adjacent. If each of these proc the trigger which if any are valid targets?