D&D 5e (2024)

Source: Arcana Unleashed

Wondrous Item, Rare

This ornate clasp has six spectral keys attached to it. As a Magic action, you can touch one of the keys to a closed door, window, gate, container, or hatch to cast the Arcane Lock spell on it. Once a key is used, it disappears. When all six keys have disappeared, the chatelaine disappears.