Obtained from weekly bosses, local specialties or enemy drops. Exact source varies by character — see the list below.
| Character | Element | Qty |
|---|---|---|
| Sangonomiya Kokomi | Hydro | 18 |
| Shenhe | Cryo | 18 |
| Thoma | Pyro | 18 |
To calculate all your characters at once, use the Genshin Calculator.