Scars

From publisher blurb:

The bravest warriors have scars: scars of battles won and lost, and scars earned during agonizing ceremonies and barbaric rituals, scars that honor the gods and call down spirits. Scars are part of a Barbarian’s equipment- each heavy line scored into his flesh is a weapon, a tool, a protective fetish. Scars brand Rogues as members of a daring guild, and proclaim a Wizard’s allegiance to a specific college of magic for all time. Any character willing to suffer honorably can earn a scar… and wear it forever. The following new types of ritual scarification and mortification can be used in any Pathfinder Roleplaying Game campaign.