Developers from Supercell Studios shared the details of the upcoming update to the Clash of Clans mobile strategy, which, apparently, will be released in the near future. A new “Friendly Challenges” mode will appear in the game that will allow players to arrange training

Black elixir. The third resource mined for free. It is not immediately available, and is used to modernize heroes (more about them later), train special, dark, warriors and create dark spells. Due to its specificity, the black elixir is especially valuable, as it is produced slowly and in small portions.

Crystals. The only resource that can not be obtained in battles with other players. These same crystals can either be bought in the built-in store for real money, or obtained for achieving certain goals in the game, or “found” while eliminating the aforementioned obstacles at your base – the last option is the most budgetary, but you won’t earn much. Crystals are a kind of analogue of a universal currency, for them you can buy the resources that are missing for any action, fill up the storage of gold / elixir and, finally, accelerate the training of the army.