Glide Speed
A creature with this movement mode can gently glide through the air, from a location of higher elevation to a location of lower elevation. For every 10 ft of horizontal movement, the Gliding creature loses 5 ft of elevation. Unlike a Flying creature, a Gliding creature can only move horizontally (not vertically), although its vertical location will change over time. A Gliding creature cannot Hover.
If a Gliding Creature is knocked Prone, it falls.