FFXII - Espers - Shemhazai, the Whisperer

Dhanus Ascendant
Scion that is both horse and woman, wielding utter control over the souls that wander the underworld, in opposition to the Martyr Igeyorhm, scion of light. Though she once served the gods as a guardian, when Ultima announced her rebellion, Shemhazai went to her, whispering of the gods' hidden weaknesses. She then descended upon the land without leave of the gods, and taught men of destruction and evil. For this was she stricken down and bound.

Previously seen in: Nowhere! Not based on any previous Final Fantasy character, Shemhazai appears to be based on an identically-named high-ranking angel "in God's confidence." See http://www.piney.com/LegFallAng.html for further details on Shemhazai's biblical tale.

Location: Giruvegan, Gate of Wind. Fought as part of the storyline.

Battle info
Status: Haste
Steal: Sagittarius Gem
Attacks: Regular (~300 plus chance of Disease), Shock (~2500), Mana Spring (Magic up), Flare (~3000), Enrage (Attack up), Silencega, Chain Magick (Decreases magic action time?)
LP received: 47
LP required to learn: 50

Advice: Straightforward battle: Vaccine/Cleanse to take care of Disease, brace yourself for strong magic attacks (Shell's a good idea, perhaps?), watch out for Silence (perhaps equip Rose Corsage on your primary magic user?), and don't take things too easy - she gets power-ups via Enrage, Mana Spring and Chain Magick, plus additional powerups at HP Critical. Still, like all other storyline espers, should be a simple battle.