Eternalization
Eternalize your heroes to increase their star level and make them stronger than ever before.
To eternalize a hero, you need 100 Hero Fragments.Hero Fragments are mainly available from Eternalization Events, together with other valuable rewards such as legendary equipment sets. Progressing through the event provides enough Hero Fragments to eternalize the featured hero.
Once you receive Hero Fragments, they appear in the top menu near your Gems balance.

The Eternalize tab becomes available when you have at least one Hero Fragment. In this tab, you can invest fragments in batches of 10. Unused fragments stay in your inventory even after the event ends.

After you invest 100 fragments, the hero is eternalized automatically.
Eternalization unlocks a higher max level for the hero and a higher max level for their ability. It strengthens the hero’s ability at its current level, and some heroes gain new ability effects.
Eternalized heroes can also advance further in the Pantheon.

The hero keeps their original level, Relic, Equipment, and Awakening bonuses.
Leveling up and ascension, however, now cost the same as for a hero of their new star level. Leveling up before eternalizing is cheaper, but eternalizing later means waiting longer for its benefits.
Please note that an eternalized hero is still treated as their original star-level version. Their drop rates and Awakening requirements remain the same. Summoning them grants the same amount of Trophy Points and Essence or Chrono Crystals as before, and does not reset your pity bar.
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