Astra (ability)

Astra is an ability and positive status effect in the Final Fantasy series. When used, the selected target's next afflicted status ailment will be nullified. The buff's presence is indicated by a blue triangular prism over the unit's head.

Final Fantasy Tactics Advance
Astra costs 8 MP to cast, and is learned by the Templar and Alchemist Job classes. The Hermetic Ezel Berbier also knows the ability automatically. When cast, Astra grants its positive status to all units in an X-shaped area. Also, a Moogle Knight can bestow Astra on an ally with the Moogle Shield ability.

Final Fantasy Tactics A2: Grimoire of the Rift
The Templar, Moogle Knight and Alchemist classes can give units the Astra status. Al-Cid Margrace, as an Agent, can also give a female unit Astra with the Reception ability.