"Nothing terrible. The power within dissipates and the staff itself becomes mundane. It's more of a... a conduit, I suppose, between the practictioner and the great unknown, though it does store much magic within." If Lan Wangji touches the staff, he might find it to be humming with energy and the melange of sensations that signify Nightingale's magic - metronomic ticking, rough fabric, fresh mown grass, and behind all of that, the fierce heat and clanging percussion of the forge.