Players can obtain new Heroes while completing the challenges of the main campaign, collecting the 28-day bonus (7th and 28th day), and summoning them at the Recruitment Point. It is possible to summon them in exchange for gems and Hero Scrolls. If you use gems, you can receive Heroes, Fallen Heroes, or Universal Souls of various grades. Summoning Scrolls offer a 100% chance of collecting a Hero. The quickest way to get the Hero that you want is by looking closely at the special offers that appear from time to time.