The former only had cantrips as an option later in the ed, while 3e had slots for cantrips, and, perhaps this is semantic, but old-School you 'memorized' and 'forgot' spells, while in 3e you 'prepared' them by casting most of the spell in advance, then triggering it with the last few syllables of the incantation to cast it. Mechanically they were virtually the same, of course, but the fluff was very different - and intertwined with the mechanics.Could someone explain the practical distinction between the Old School Vancian and the 3.5 Vancian please?
Darn, completely forgot about those sorts of variants.As it relates to the actual casting of spells, I prefer if the caster makes some kind of check related to her skill at using magic to cast her spells and to determine how potent or effective the spells are.

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