The Trick does work well,But at the first challenge at epic its very difficult to the sky dragon to get to the black Imps This should work to it:You buy the tower which shoots arrows then you wait until your skydragon is ready for action then you will stop time and put your army to attack and the dragon should get to the black imps after a while or you can use your berserk and shoot your meteor on the imps and then use the time stop.+ if you like it.
 "Epic War 4"){kind=icon}