You cause the feet of a creature you can see within range to increase in size by one category -- from Medium to Huge, for example. The target must make a Constitution saving throw. On a failed save, the target suffers the following effects:

The target's feet occupy the same space that a biped of the same size as the target's new foot size occupies, and melee range against the target is within 5 ft of any area occupied by its feet. If there isn't enough room for the targets feat to reach the resulting size, the feet attain the maximum possible size in the space available.

The target is considered restrained for the duration of the spell.

The spell can also be ended by greater restoration, heal, or wish.