| 
 
| ジェレン |  | 
|  |  
| Attack-weakening technique. Can affect enemies near the target.
 |  |  
| Type : | Support |  | 
 
| 15 | 20 | × | × |  
 
| × | 20 | × | × |  
 
| 30 | 30 | 30 | 30 |  |  | 
 Jellen is a support Technique that lowers the ATP of a group of enemies. It reduces the ATP of the target enemy, and other nearby enemies, by a percentage that increases with its level. Its duration and range is also improved with its level.
 Jellen is a support Technique that lowers the ATP of a group of enemies. It reduces the ATP of the target enemy, and other nearby enemies, by a percentage that increases with its level. Its duration and range is also improved with its level.
Details
Boosting Equipment
There is only a single weapon in Phantasy Star Online: Blue Burst that raises the range of Jellen:
Weapons
Level Progression
| Lv | Tech Power | TP Cost | Targeting Range | Targeting Angle | 
| Horizontal | Vertical | Horizontal | Vertical | 
| 1 | ? | ? | ? | ? | ? | ? | 
| 2 | ? | ? | ? | ? | ? | ? | 
| 3 | ? | ? | ? | ? | ? | ? | 
| 4 | ? | ? | ? | ? | ? | ? | 
| 5 | ? | ? | ? | ? | ? | ? | 
| 6 | ? | ? | ? | ? | ? | ? | 
| 7 | ? | ? | ? | ? | ? | ? | 
| 8 | ? | ? | ? | ? | ? | ? | 
| 9 | ? | ? | ? | ? | ? | ? | 
| 10 | ? | ? | ? | ? | ? | ? | 
| 11 | ? | ? | ? | ? | ? | ? | 
| 12 | ? | ? | ? | ? | ? | ? | 
| 13 | ? | ? | ? | ? | ? | ? | 
| 14 | ? | ? | ? | ? | ? | ? | 
| 15 | ? | ? | ? | ? | ? | ? | 
| 16 | ? | ? | ? | ? | ? | ? | 
| 17 | ? | ? | ? | ? | ? | ? | 
| 18 | ? | ? | ? | ? | ? | ? | 
| 19 | ? | ? | ? | ? | ? | ? | 
| 20 | ? | ? | ? | ? | ? | ? | 
| 21 | ? | ? | ? | ? | ? | ? | 
| 22 | ? | ? | ? | ? | ? | ? | 
| 23 | ? | ? | ? | ? | ? | ? | 
| 24 | ? | ? | ? | ? | ? | ? | 
| 25 | ? | ? | ? | ? | ? | ? | 
| 26 | ? | ? | ? | ? | ? | ? | 
| 27 | ? | ? | ? | ? | ? | ? | 
| 28 | ? | ? | ? | ? | ? | ? | 
| 29 | ? | ? | ? | ? | ? | ? | 
| 30 | ? | ? | ? | ? | ? | ? |