It deals magic damage, and will go through Invincible.
Will also reset hate.
Level 90 Garuda resisted Temblor Blade's petrification effect every time.
One strategy is to bring a Summoner with Alexander to the fight. Fight her normally until 50% when Temblor Blade becomes active and then use Alexander and zerg her down as fast as you can. Perfect Defense from Alexander at full mp will not only greatly reduce Temblor Blade's damage, but it will also block the added effect of Petrification, saving a lot of trouble.
Can be soloed by some jobs at level 90. (RDM/NIN confirmed)
Apprehended in Beaucedine after deserting his unit, Zeid awaits punishment in a dark cell of Benedikt Watchtower. Can nothing be done to save him from his fate? At his friend Gentle Tiger's behest, you travel to North Gustaberg to offer your aid.
SPOILER WARNING: Click here for additional details about this story line.