
The blood thing they talk about I believe is just a DNA trace that is used as a key by the Allagan nobility of Syrcus Tower to unlock various things. A bit like a retina scan if you will.
That DNA marker remains even if the blood is diluted apparently (seeing as G'raha Tia can still use it after many generations).
That DNA marker remains even if the blood is diluted apparently (seeing as G'raha Tia can still use it after many generations).
Balmung:Â Suen Shyu