Enhancement crystals are scarce, and Legendary and Rare heroes draw from separate crystal types - so you're really managing two budgets. Priorities below run highest-first within each mode, and modes are ordered by when they matter in your progression. Remember: Awakening requires the hero to be fully skill enhanced, so your main carries want every slot (basic attack, S1, S2, passive) filled eventually.
Adventure & Dungeons
- Legendaries: ONE of Lu Bu / Freyja / Teo (whichever is your carry) Lina Biscuit Bai Jiao Ace Rachel, with Mercure added for Nightmare difficulty.
- Rares: Evan, Yui, Chloe, Xiao, Feng Yan, Joker, Heavenia, Jane.
Raids
- Legendaries: Pascal Shane Espada Daisy Xiao Qiao Bai Long Guan Yu.
- Rares: Lucy, Karon, Zhao Yun - plus Black Rose if you don't have Daisy.
Castle Rush
- Legendaries: Ryan Nezha Ruri Taka Miho Orly Sieg Deo.
- Rares: Jin if you don't have Deo.
Towers (Infinite Tower & Tower of Trials)
- Sun Wukong Elysia Yeonhee Randgrid Branze & Bransel Reginleif.
PvP
- Gelidus Melia Rin Radgrid Alice Pallanus Karl Heron.