Not necessarily a good feature, of course...
Doing ~d6 damage per hit to 1/3 of the enemies you face and having no spellcasting is a feature?
SRD
If a rogue can catch an opponent when he is unable to defend himself effectively from her attack, she can strike a vital spot for extra damage.

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