Questions about dual-school spells

onenamelesscorpse

So what are the rules of these spells?
Why can abjurer learn Fireshield(red/blue)(Evocation,Alteration) Lower Resistance Spell Strike(Abjuration,Alteration)Melf's minute meteors(Evocation,Alteration), but not Wizard Eye(Divination,Alteration )Wraithform(Alteration,Illusion)?
Transmuter can't learn Lower Resistance Spell Strike(Abjuration,Alteration),
both Enchanter and Diviner can learn Wish(conjuration,invocation), both are banned from learning Limited Wish(Conjuration,Invocation)
Edit:Otiluke's Resilient Sphere is bugged in bgee,fixed in bg2ee.

semiticgoddess

There's an answer here: http://www.pocketplane.net/volothamp/magic1.htm

onenamelesscorpse

Thank you, that's quite helpful, so technically they're bugs?

semiticgoddess

@onenamelesscorpse: Or rather, they just couldn't be implemented quite the way they were intended to be. I actually was sent that link by somebody else and happened to have it on hand when I saw this thread, so I would thank them. Whoever they are.