Power Stones

This kind of resources maybe very rare for some players, they can be obtained by spending some crystals, get form bonuses after buying amount of crystals, or following events. It represented black stone with spikes

Obtaining

This resources can obtained for free, through :


 * 1) Share FB
 * 2) Campaigns, see Arena, Special Challenge, & Hero Challange
 * 3) Seasonal Challenges
 * 4) Online rewards
 * 5) League War
 * 6) Midas Touch
 * 7) Spinning lottery of Statue Tournaments
 * 8) Attacking bases on multiplayer, war, & statue tournaments

Spending

Players can spend this resource, through :


 * 1) Upgrading Hero & Defense building's skill
 * 2) Buying following Hero & Statues
 * 3) Refresh & spin on Ordinary Lottery