Charisma

Charisma is one of the attributes.

Overview
An attribute useful for shamans and diplomats alike. Charisma determines the power of a shaman when contacting spirits, while all archetypes unlock an etiquette every two levels. Elves, due to their bonus to Charisma, gain one automatically, due to their +1 racial bonus.

High Charisma often allows you to charm your way past manned checkpoints, and to bargain for better rewards from NPCs.