A creature that falls takes 1d6 Bludgeoning damage at the end of the fall for every 10 feet it fell, to a maximum of 20d6. When the creature lands, it has the Prone condition unless it avoids taking any damage from the fall.
A creature that falls into water or another liquid can use its Reaction to make a DC 15 Strength (Athletics) or Dexterity (Acrobatics) check to hit the surface head or feet first. On a successful check, any damage resulting from the fall is halved.
{
"name": "Falling",
"page": 367,
"__prop": "hazard",
"source": "XPHB",
"entries": [
"A creature that falls takes {@damage 1d6} Bludgeoning damage at the end of the fall for every 10 feet it fell, to a maximum of {@damage 20d6}. When the creature lands, it has the {@condition Prone|XPHB} condition unless it avoids taking any damage from the fall.",
"A creature that falls into water or another liquid can use its {@variantrule Reaction|XPHB} to make a {@dc 15} Strength ({@skill Athletics|XPHB}) or Dexterity ({@skill Acrobatics|XPHB}) check to hit the surface head or feet first. On a successful check, any damage resulting from the fall is halved."
]
}