pawsplay
Hero
In People of the Black Circle, Conan basically intimidates a 5th level Wizard, who decides he is done being evil and runs off with a woman instead. Then he lucks into a Belt of Spell Resistance, foils one critical spell penetration check, and smacks the wizard down with a couple of sword strokes.
In the Lankhmar stories, the Grey Mouser is more of a magic-user thief. Given time, he can whip up some decent battlefield control spells and some utility magics, but avoids using magic, since he knows he doesn't have the discipline for it (and thus risks both moral peril and losing control of his poorly orchestrated magics). Elric is immensely powerful, but knows spells almost entirely of a conjuration (summoning) nature. In Dragonslayer, magic can slay a dragon or raise the dead, but is no parlour trick and requires great preparation; even in a lifetime the most powerful mages would be lucky to cast more than about two 9th level spells.
In the Lankhmar stories, the Grey Mouser is more of a magic-user thief. Given time, he can whip up some decent battlefield control spells and some utility magics, but avoids using magic, since he knows he doesn't have the discipline for it (and thus risks both moral peril and losing control of his poorly orchestrated magics). Elric is immensely powerful, but knows spells almost entirely of a conjuration (summoning) nature. In Dragonslayer, magic can slay a dragon or raise the dead, but is no parlour trick and requires great preparation; even in a lifetime the most powerful mages would be lucky to cast more than about two 9th level spells.