Someone
Adventurer
Other than nerds>jocks, no.
So the argument that a mundane character wall running would dent the verosimilitude of fortresses modeled on real world ones and shouldn't be accepted, but it's ok to have:
Commune, Contact other plane, Plane shift and the like,
Zone of truth, Detect lies, and so on,
Make whole, Mend, Fabricate, Create food and water, Wall of Iron, and others,
Detect good/law/chaos/evil, to put an example,
Fireball, and many other AoE spells,
Cure spells, Cure disease, and the kind,
Raise Dead, Resurrect and their ilk,
Animate dead, Create undead and similar
Even when they would radically alter the ideas and practices on religion and the afterlife, judicial procedures, concepts of personal responsability and practices of mercantile transactions, cafting and the economy, interpersonal relationships and ethics, warfare, politics and inheritance, advancements on medicine, burial practices and generally speaking, technological and cultural development doesn't hold much water either?