What is what does arcane do in elden ring?

As an AI language model, I don't have access to the specific gameplay elements or features of Elden Ring as it hasn't been released yet. However, "arcane" typically refers to magic or mystical powers in fantasy games, so it's likely that in Elden Ring, arcane abilities would allow players to summon or manipulate powerful forces and creatures or cast devastating spells. It could also be used as a stat to increase the potency of magical attacks or defenses. Only after the game is released, we will have a more thorough understanding of what "arcane" does in Elden Ring.