Runes are items that a player can equip that grant bonuses to defenses, abilities, pets or other heroes. Runes have distinct rarities, but unlike other items, runes do not have a level requirement that must be met in order to equip them. Once owned, runes must be unlocked with a gold fee before they can be equipped. Once a rune of a given rarity is unlocked for a hero, any other heroes may use that rune.