EDITED: Incorrect text, new lore was released with Heavensward on how Ishgardians turn into dragons.
As wary as some people are of "glamours" or "glamour magick," it is 100% canon to lore on multiple fronts. I can understand reservation on something like the "Fantasia Potion" as it's a money-store bought item with no other mention elsewhere in Eorzea besides some ambiguous flavor text. Glamours, on the other hand, are everywhere in Eorzea. From Levequests to F.A.T.E.s to MSQ to Seasonal to Hildibrand. Even if glamouring isn't really your cup of tea, something that is that frequently expressed in the game cannot be cast aside as not canon because of personal preference.
We see a lot of "Glamour Magicks" used by Voidsent, particularly imps, as well as Sylphs. But we also have glamour crystals which are crafted not using magic. So a pure-blood Garlean may lean more towards the latter form of glamourification.
As for the main story quest where the inquisitor becomes a dragon... I think that is less Arcanima than it is Dragon magic. Dragons have some very impressive magicks that we can only hope to see and learn more of in Heavensward, but shape-shifting may be one of those magicks? We don't see Arcanima used for glamour anywhere else I don't think.
Blessed or magicked blood from ancient Dravanian causes Ishgardians to turn into Dravanians.
All that said, glamours appear to be sketchy at best and not very reliable for long periods of time. Also there's several ways of dispelling glamours and per most Levequests, the respective militaries recognize many of these ways to dispel glamours.
As wary as some people are of "glamours" or "glamour magick," it is 100% canon to lore on multiple fronts. I can understand reservation on something like the "Fantasia Potion" as it's a money-store bought item with no other mention elsewhere in Eorzea besides some ambiguous flavor text. Glamours, on the other hand, are everywhere in Eorzea. From Levequests to F.A.T.E.s to MSQ to Seasonal to Hildibrand. Even if glamouring isn't really your cup of tea, something that is that frequently expressed in the game cannot be cast aside as not canon because of personal preference.
We see a lot of "Glamour Magicks" used by Voidsent, particularly imps, as well as Sylphs. But we also have glamour crystals which are crafted not using magic. So a pure-blood Garlean may lean more towards the latter form of glamourification.
As for the main story quest where the inquisitor becomes a dragon... I think that is less Arcanima than it is Dragon magic. Dragons have some very impressive magicks that we can only hope to see and learn more of in Heavensward, but shape-shifting may be one of those magicks? We don't see Arcanima used for glamour anywhere else I don't think.
Blessed or magicked blood from ancient Dravanian causes Ishgardians to turn into Dravanians.
All that said, glamours appear to be sketchy at best and not very reliable for long periods of time. Also there's several ways of dispelling glamours and per most Levequests, the respective militaries recognize many of these ways to dispel glamours.
