The purpose behind this idea is to make a target move backwards a single space to accomplish something with them. Things that this would be useful for are:

1) Kicking a foe so that land on an Altar space so that you can sacrifice them.
2) Kicking a foe into a trap, so that they activate the trap again and suffer it's effects.
3) Kicking a foe into water so that they start to drown.
4) Kicking a foe into a room, closing the door, and then magically locking the door on them.
5) Kicking a foe backwards so that they don't follow you up/down a staircase.

Some foes you shouldn't attempt to kick, as these may try to grab/bite your leg and possibly rip it off such as balors/dragons, or kicking them hurts immensely such as Stone Giant.

EDIT: Seriously, AGAIN? Okay, this is also supposed to be in the Features section.