I need some clarification on your actions Ruby. You waited for the half-orcs to go and they ran. However a horse's move speed is 50ft, 60ft if they have been spur'd like they had been. Run is a full round action that moves x4 movement speed. That is a move of 240ft. With a manifester level of 7 your range on a medium length power is 170ft. That puts them out of the range of your power, even more so in that when affecting multiple targets with extra power points they have to be whiten 15 ft of each other.