Jagged Grex Tails are common materials in Xenoblade Chronicles X. They can be obtained from Grexes, or for 30 Reward Tickets at the Network Console in the BLADE Barracks. They are one of the required components of Back Attack Plus and PositionDmg.BACK augments.
Sources[]
| Enemy | Level | Area |
|---|---|---|
| Young Grex | 1-10 | Primordia |
| Bush Grex | 11-20 | Primordia |
| Giant Grex | 21-30 | Primordia |
| Lawless Grex | 31-40 | Primordia |
| Dieter, the Epicure | 39 | Primordia |
| Soldier Grex | 11-20 | Oblivia |
| Hunter Grex | 21-30 | Oblivia |
| Scourer Grex | 31-40 | Oblivia |
| Celedonio, the Battle-Tested | 18 | Oblivia |