Summons usually cost Gems, but there are special Tokens which will give you a free Summon:
  • Summon Token gives you one free Daily Summon
  • Epic Hero Token allows you to do one free Epic Hero Summon
  • Epic Troop Token enables one Epic Troop Summon

Chances to receive the Hero of the Month from any Epic Summon also applies to summons made with Epic Hero Tokens. Please note that the tokens cannot be used for Elemental or Event Summons.
You can view all your Tokens from your Inventory. They are also displayed in the Summon Gate.