Reborn Heroes have latent abilities called Traits.
Check your Heroes' hidden Traits.
You can use Mana Stones to modify (randomize) their Traits.
Traits are colored differently depending on their quality.
Each Hero may require different Traits. Choose Traits for your Heroes carefully.
Mana Stones drop in dungeons, but if you want a steady supply, visit the Lab and the Pit of Nephthys on a regular basis.
