
Originally Posted by
Pentacus
CNJ and WHM are the big exceptions, the whole point of the CNJ questline is to cement the fact that they use their own aether like THMs, but rather than regaining aether through meditation, nature gives them their aether back, if a CNJ uses too much aether without accepting more from nature, they overexert themselves and die, however, the amount of aether that they are allowed is purely at the discretion of the elementals, if you are using too much aether, they'll probably just refuse to give you any more until you stop being so wasteful (amusingly, that's probably put sylphie in the elementals good books, considering that she tried to stop using magic at all fearing that she's hurting the elementals by using ANY magic).
in the past, when there was no regulation for WHMs, EVERYONE was using full on white magic with no regard for what would happen, both WHMs and BLMs were taking aether directly from the lifestream and the sheer amount of magic used in the war of the magi brought about an umbral era. now, BLMs all use the THM's methods of restoring aether, whilst lorewise, WHMs are strictly regulated (canonically, you are the only non-padjal WHM, and you are one of the few remaining BLMs), CNJ are WHMs regulated by the elementals, rather than just ripping magic from the lifestream, whilst WHMs are free of such restrictions on the use of their magic, hence only the padjal, the ones that the elementals specifically choose, are allowed to become WHMs (and yourself, by virtue of being A-Towa's heir, and even then, one of the two padjal was fairly worried about the prospect)