Runes are a powerful item that can reduce costs and timers. Runes are available to purchase in the game's IAP Store, but can also be earned as rewards in events or purchased directly via the Rune Temple. Upon earning a Rune it is automatically activated for a set amount of time.
There are 3 main types of Runes each indicated by a unique color. Runes often target a specific element which is indicated by an icon when viewing the active Rune in the game menu. This can include summoning Heroes, training Troops, crafting Cards, or constructing buildings.
Reduces timers for buildings, training troops, and upgrading.