JoeGKushner said:For instance, several players in my campaign have characters that originate outside of the core rules in terms of feats, spells, magic items and in some cases, alternative core classes. Are those books where those items came from 'In use'?
For instance, several players in my campaign have characters that originate outside of the core rules in terms of feats, spells, magic items and in some cases, alternative core classes. Are those books where those items came from 'In use'?

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.