Thomas Shey
Legend
Shadowdark has really convinced me that spellcasting checks are better all around than Vancian magic. Less bookkeeping while still preventing spellcasters from casting unlimited spells. And it makes the most powerful spells ones that casters have to really weigh using, since they have the biggest chance of failure.
While you see some variations, as soon as you get outside of obviously D&D-derived games, its not a coincidence how rare fire-and-forget spells are.