Sight Unseeing

From Final Fantasy Wiki

Sight Unseeing is a Technick in Final Fantasy XII. The Technick can be bought for 6,800 gil and the license costs 40 License Points. This Technick causes the target's HP to drop drastically, but this can only work if the user is Blinded. Furthermore, most enemies have protection against Sight Unseeing.

In the International Zodiac Job System version, the Technick is in a chest in the Canopy of Clay area of Zertinan Caverns. It can be used by the job classes Breaker, Knight, Samurai, and Monk. Monks must first acquire the License for the Esper Zeromus.