Diversion Pebbles

Anyone who is surprised by the noises of one of
these pebbles hitting a surface must succeed a DC
15 Wisdom saving throw, or be compelled to
follow the sound and hunt for the stone. The
effect ends when they haver found it, if the search
would result in bodily harm, or after 1 hour.
The sound cannot compel a creature to move in
such a way as to endanger itself, such as pursuing
the stone off of a cliff.