2-3. Hero Rank and Levels

Upgrade your Hero Rank to unlock higher Hero capacity, increased power, and new abilities. Strengthening your heroes will make battles easier.-Hero Rank can be upgraded by using spirit shards or spirit shards that are specific to that hero. Spirit shards can come in 3 rarities RARE, EPIC AND LEGENDARY,
they are obtainable in altar of heroes, avatar trails, expeditions and events.- Leveling up heroes is done by defeating Shattered Skulls, allowing them to gain experience and grow stronger over time,
Books of experience can also be used to raise your heroes level and these books can be also obtained with altar of heroes, trail shop, trading post, various events.