A creature with a hover speed has a very restricted version of flight. Namely, they must begin and end their turns adjacent to a surface. Note that this needn't be a horizontal surface; it can be a vertical cliff face, or even the underside of a ceiling.
A creature with hover that fails to end their movement adjacent to a surface falls to the ground, but not until the end of their turn. Because the falling only occurs when their turn ends, a creature with a hover speed could choose a mid-way point in mid-air for one move, then take a second move action to hover to a spot which is adjacent to a surface. Similarly, a hovering creature could hover up to a flying creature and attack it, assuming they are willing to suffer the falling damage afterwards. Hover provides no mitigation against falling damage in the absence of a surface to hover against.
- Prone: A hovering creature that is knocked prone can automatically reorient, rendering it immune to prone. However, if a hovering creature is immobilized or denied enough of its actions that it cannot voluntarily move from its starting space, it falls to the ground, suffering falling damage as normal. (Note: it doesn't have to move, it just has to be able to move if it wanted to.)
- Difficult Terrain: Hovering creatures do not actually touch the surface they are adjacent to, meaning they ignore movement penalties caused by ground-based difficult terrain, can hover across the surface of liquids, and will not trigger pressure-based traps.
- Permitted Movement: Hovering creatures are able to charge, make 5-foot steps, run or withdraw while hovering.