Athalos' Chime

Once per day, you can ring this ghost bell as an action to cast the spell Aid on yourself at 2nd level.

Whenever you ring this bell, and regardless of whether it casts Aid on you, all undead within a 60 ft. area that can hear its chime must succeed a Wisdom saving throw (DC 10) or be forced to approach you at their Speed for one turn. Affected creatures may still take actions as they move.