I actually do not remember anymore why I hated it so much, just that I stopped after about a third of the first novel and then only started the triology again several years later when it had become the currently only available option for realms novels. Maybe my brain is trying to protect me by locking the exact memory away.But again, why?
As to badly plotted, it reminded me- even when I was reading it, of Star Wars (a bit), or else- now that I am thinking about it, the Matrix. Or Dune, or... well, any number of books in which the hero lacks family/backstory/past. heads for adventure and discovers that they have magical powers (Luke/Neo/Paul).
The bad guys attack x lots- try to kill the super-powered good guy, who gathers friends, including an aged mentor (who teaches the hero about their powers), also add in a love-interest, a comedy double-act and... well, you're pretty much there.
Cue more plotting by evil empire(s), then final attack and we're pretty much done with this book.
I can' wait to see what happens next.
I don't mean to push it too much but what do you object to? What's bad about it? What am I not seeing?
Overall I was never a fan of Greenwood's novel. I love his setting (although maybe mostly due to the contributions others have made to the realms) but I absolutely dislike his novels. And of them Spellfire was for me the worst of the bunch (and reading through the Elminster novels was already a huge chore for me).