The Rune Harvester was born from Katarina Novak's early experiments with ancient runic magic. During a forbidden ritual in a crumbling synagogue, she combined stolen Jewish mystical texts with pagan rune magic, creating a being that could consume and interpret ancient symbols. The entity became a crucial tool in the Arcane Seekers' quest to unlock the Golem's secrets.

The Rune Harvester exists as a semi-corporeal entity, able to phase between physical and spectral forms. Its body is composed of swirling, glowing runes that constantly shift and rearrange themselves. The creature can absorb magical energy from ancient artifacts and sacred sites, growing stronger with each consumed rune. It emits a low, ominous hum that grows louder as it feeds on arcane knowledge.

The Rune Harvester serves as the Arcane Seekers' primary tool for extracting ancient knowledge. It infiltrates sacred sites, consuming runes and symbols to uncover the secrets of the Golem's creation. Its existence represents the faction's willingness to destroy cultural heritage in their pursuit of power.