The Sixteenth Key is The Herta's Level 4 Eidolon.
Other Languages[]
| Language | Official Name |
|---|---|
| English | The Sixteenth Key |
| Chinese (Simplified) | 第十六把钥匙 |
| Chinese (Traditional) | 第十六把鑰匙 |
| Japanese | 十六本目の鍵 |
| Korean | 열여섯 번째 열쇠 |
| Spanish | La decimosexta llave |
| French | Seizième clé |
| Russian | Шестнадцатый ключ |
| Thai | The Sixteenth Key |
| Vietnamese | Chìa Khóa Thứ 16 |
| German | Der sechzehnte Schlüssel |
| Indonesian | The Sixteenth Key |
| Portuguese | A Décima-Sexta Chave |
Change History[]
Released in Version 3.0
[]
| Single Target Basic ATK  Did You Get It | Blast Skill  Big Brain Energy | AoE Skill  Hear Me Out | AoE Ultimate  Told Ya! Magic Happens | Enhance Talent  Hand Them Over | Enhance Technique  Vibe Checker |
| Ascension 2 Bonus Ability  Aloofly Honest | Ascension 4 Bonus Ability  Message From Beyond the Veil | Ascension 6 Bonus Ability  Starved Landscape of Vacua |
| Level 1 Eidolon  Night at Shorefall | Level 2 Eidolon  Wind Through Keyhole | Level 3 Eidolon  Door into Summer | Level 4 Eidolon  The Sixteenth Key | Level 5 Eidolon  Bitter Pill of Truth | Level 6 Eidolon  Sweet Lure of Answer |