Normal: Gravity no longer applies to the target, as it gains the ability to fly, leaving a trail of crackling red bolts in its wake.

As the fly spell

Reverse: At your command, the target loses its ability to soar through the air and begins to descend rapidly.

The target is rendered unable to fly as a feeling of gravity pulls them down. If it is already flying, the target floats downward 18m per round. It lands safely on the ground.