usefire / usemagic are just "if i have a fire or magic spell memorized that we know how to use, use it"
Looking at the spell - sun vortex isn't a spell that the plugin says it uses, so byos/byos-custom wouldn't work.
We don't use "all the spells", many of them aren't "spell lines" and sometimes just one-offs, or dont otherwise fit into AAs and other things - *sometimes* they'll get added as they're the best option for an xpac or two, but usually we'd just skip over something that doesn't have much extended use in the line
these 3 spells are kind of examples of that. they don't have 1:1 lines before or after and don't really fit in - you'd think they'd just be upgrades to themselves, but the first 4 have push and the last 2 dont heh
shock of fiery blades / ancient: shock of sun
sun vortex / ancient: Chaos vortex
star strike / ancient: nova strike
I can add them for byos/byos-custom usage, but they won't be part of things that are "normally memorized"