She favors humans to thr point she gives them exclusivly(I think there may be a half elf in there) extra power.
Also as a side note if you are a dude she may gender bend you for a time to increase your connection to the weave.
Thanks! Rip non-human races I guess.
However, this still doesn't explain why humans in general should have more (or equal) intelligence compared with other races. Imo, the most appropriate solution would be some background or feat that was exclusive to humans (and maybe half-elves): "Mystra's Favored" that grants you Int and/or some other bonus to spellcasting. But wizard PCs who *aren't* chosen by Mystra herself shouldn't have this exceptional wizard affinity which presents itself as increased intelligence. Whereas gnomes, for example, *all* have Gnome Cunning, a "strong affinity for all things magical," including "natural grasp of the arcane", and general affinity for illusion magic.
There's also the unfortunate overlap between smarts-intelligence and wizard-related intelligence. Being given exceptional magic affinity shouldn't necessarily make you smarter in general. Unfortunately, this is completely baked into the 5e ability score system and can't really be feasibly separated...
