This is pretty much it. When I think iconic I think something pretty much everyone will recognize and Morrus' list pretty much got it.Most iconic != personal favorite
I donno, Ive recognized every one of them.Most iconic != personal favorite
Some of these suggestions are really obscure, even if they're beloved by their fanbases.

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