  We present an intensive monitoring of high-resolution spectra of the Ca {\sc
ii} K line in the A7IV shell star $\Phi$ Leo at very short (minutes, hours),
short (night to night), and medium (weeks, months) timescales. The spectra show
remarkable variable absorptions on timescales of hours, days, and months. The
characteristics of these sporadic events are very similar to most that are
observed toward the debris disk host star $\beta$ Pic, which are commonly
interpreted as signs of the evaporation of solid, comet-like bodies grazing or
falling onto the star. Therefore, our results suggest the presence of solid
bodies around $\Phi$ Leo. To our knowledge, with the exception of $\beta$ Pic,
our monitoring has the best time resolution at the mentioned timescales for a
star with events attributed to exocomets. Assuming the cometary scenario and
considering the timescales of our monitoring, our results indicate that $\Phi$
Leo presents the richest environment with comet-like events known to date,
second only to $\beta$ Pic.
