!.F. Falling and Flying - JulTob/DnD GitHub Wiki

Falling

Falling from great heights can be dangerous. The basic rule states that a creature takes 1d6 bludgeoning damage for every 10 feet fallen, up to a maximum of 20d6. The creature also lands prone unless it avoids taking damage. Below are optional rules that expand on this basic rule.

Rate of Falling

For high-altitude falls, use this optional rule: When a creature falls, it instantly descends up to 500 feet. If still falling on the next turn, it descends another 500 feet at the end of that turn. This process continues until the fall ends.

Flying Creatures and Falling

A flying creature in flight falls if knocked prone, its speed is reduced to 0 feet, or it loses the ability to move unless it can hover or is held aloft by magic.

To simulate a flying creature's ability to slow its fall, subtract the creature's current flying speed from the distance it fell before calculating falling damage. If using the "Rate of Falling" rule, a flying creature descends 500 feet on the first turn, but can halt the fall by spending half its flying speed to counter the prone condition.