You create a spectral boot that appears behind any medium or smaller creature you can see within range. The boot has a number of hit points equal to half your maximum hit points and an AC of 13. The boot moves with the target creature, staying always behind it, and passes harmlessly through solid objects and other creatures as needed to maintain its position behind the target. As a bonus action on each of your turns for the duration, you may make a kicking motion to cause the spectral boot to kick the target creature, causing 1d4 bludgeoning damage and forcing the creature to succeed on a Strength saving throw or fall prone. The boot remains for the duration, until its hit points are reduced to 0, or until the target creature's hit points are reduced to 0.