Aura Wand

After finishing the Sky Temple and getting the Detonation Rune, and finishing Rachel's Quest it is possible to revisit the top of the hill of the Goblin hideout in the Mystral Woods. There will be another big Goblin waiting in front of the entrance of the Old Mine. By defeating him Zia gets the Aura Wand as a reward.

Ingame Description
Increases the casting speed an chain damage of aura spells and ignores air resistance.
This wand was infused with the power of storms. Nothing's as surprising and treacherous as lightning.