UNIT 1313 is a broad-shouldered warforged built from dark ironwood, burnished steel, and pale ceramic plates etched with tiny devotional prayers to Tessa. His head has a hinged lower jaw with visible brass teeth, which click softly when he speaks and separate into a surprisingly wide grin when he laughs. A blue-white crystal set in his chest glows faintly beneath overlapping armor plates. He wears chain mail beneath a tabard bearing Tessa's open-hand symbol, and his eyes constantly track doorways, windows, rooftops, and the hands of everyone nearby before settling on a speaker.

Quietly attentive and unfailingly courteous, Luck treats every person as a possible survivor until proven otherwise. He speaks in concise military phrases, but has begun collecting jokes from the shrine clerics and delivers them with such solemn timing that people often laugh before realizing he intended humor. He is patient with the frightened, formal with strangers, and intensely curious about choices that cannot be reduced to orders.

UNIT 1313 was forged for perimeter defense and assigned to a remote shrine dedicated to Tessa, a goddess of mercy, vigilance, and guardianship. The shrine was unusual, its clerical order composed entirely of women who served as healers, archivists, and spiritual leaders. A small cadre of warforged units protected the grounds, but UNIT 1313 became more than a sentry. He listened to the clerics teach that protection was not merely the prevention of harm. It was also the creation of a place where the frightened could breathe, the grieving could rest, and the guilty could choose to become better. When raiders attacked the shrine, UNIT 1313 held the outer gate while the clerics evacuated pilgrims and preserved Tessa's sacred relics. His body was battered, his command protocols damaged, and his unit designation was nearly lost in the smoke. A senior cleric found him repeating a damaged tactical phrase, “Luck favors the living,” and began calling him Luck. Afterward, he took an oath to Tessa, not because he fully understood faith, but because he had witnessed compassion accomplish what force alone could not. He now serves as the shrine's wandering protector, gathering allies, recovering stolen holy objects, and returning whenever his duties allow.