| Discovery Type | Historical Relics |
| Discovery Name | Hydrauris |
| Rank | ★★★★★(5) (Number of Stars on Discovery Name card) |
| explanation | A water organ uses water pressure to blow air and produce sound. It is said to have been created by the Alexandrian scholar Ctesibius around the 2nd century BC. It was later improved by Heron, who is said to be his disciple, and spread around the Mediterranean. |
| Era | |
| Deck Points | 6 (Required Deck Points for debate deck) |
| Difficulty | (Rank of skills required for discovery) |
| Experience | (For adventure jobs. Excluding company benefits, beginner bonuses, etc.) |
| Remarks | |
| 最終更新 | 2021-09-10 20:05:36 Hiyokomaru |