Mercenary Captain's Aether Key is a level 9 Superior item in the Keyblade category of AION Retail 7.8.
Similar items
| Item | Grade | Level |
|---|---|---|
| Guardian's Aether Key | Common | 10 |
| Aether Key of the Night Sky | Superior | 9 |
| Aether Key of the Legion of Victory | Heroic | 10 |
| NPSC Crucible Aether Key (valid until 4.0) | Fabled | 1 |
| Tahabata's Aether Key | Eternal | 50 |
| Dragon Lord's Yearning | Mythic | 60 |