When you are battling and you can't use anything because you used a heavy ass card and you have no more elixir than I have a plan 4 u.if you use an elixir collected and wait to mirror than you are set to play because you can use a golem then collect more elixir with the elixir collectors then you can use spear goblins and mirror it then use a wizard and rage and you are set for game.for spells try not to use the rocket because it's a heavy spell when you could've use a fire ball after using a tornado then for small troops use arrows or tornado.