Rockslide

HazardXDMGp. 782024

When a rockslide occurs, every creature in its path makes a DC 15 Dexterity saving throw. On a failed save, a creature takes 11 (2d10) Bludgeoning damage, has the Prone condition, and moves with the rockslide. On a successful save, a creature takes half as much damage only.

When the rockslide stops, its space becomes Difficult Terrain, and all Prone creatures in its space are buried under rocks and debris. A creature buried in this way has the Restrained condition and has Total Cover. As an action, a creature can try to crawl out from under the rock pile. If the creature succeeds on a DC 15 Strength (Athletics) check, it is no longer Restrained; instead, it has the Prone condition and is atop the rock pile. If the check fails, the creature remains buried and gains 1 Exhaustion level.

A creature that has neither the Incapacitated nor the Restrained condition can spend 1 minute freeing another creature buried by the rockslide.

At Higher Levels

You can scale this hazard for higher levels by increasing the Bludgeoning damage as follows: 22 (4d10) at levels 5โ€“10, 55 (10d10) at levels 11โ€“16, and 99 (18d10) at levels 17โ€“20.

Raw data
{
  "name": "Rockslide",
  "page": 78,
  "__prop": "hazard",
  "rating": [
    {
      "tier": 1,
      "threat": "deadly"
    }
  ],
  "source": "XDMG",
  "entries": [
    "When a rockslide occurs, every creature in its path makes a {@dc 15} Dexterity saving throw. On a failed save, a creature takes 11 ({@damage 2d10}) Bludgeoning damage, has the {@condition Prone|XPHB} condition, and moves with the rockslide. On a successful save, a creature takes half as much damage only.",
    "When the rockslide stops, its space becomes {@variantrule Difficult Terrain|XPHB}, and all Prone creatures in its space are buried under rocks and debris. A creature buried in this way has the {@condition Restrained|XPHB} condition and has {@table Cover|XPHB|Total Cover}. As an action, a creature can try to crawl out from under the rock pile. If the creature succeeds on a {@dc 15} Strength ({@skill Athletics|XPHB}) check, it is no longer Restrained; instead, it has the {@condition Prone|XPHB} condition and is atop the rock pile. If the check fails, the creature remains buried and gains 1 {@condition Exhaustion|XPHB} level.",
    "A creature that has neither the Incapacitated nor the Restrained condition can spend 1 minute freeing another creature buried by the rockslide.",
    {
      "name": "At Higher Levels",
      "type": "entries",
      "entries": [
        "You can scale this hazard for higher levels by increasing the Bludgeoning damage as follows: 22 ({@dice 4d10}) at levels 5โ€“10, 55 ({@dice 10d10}) at levels 11โ€“16, and 99 ({@dice 18d10}) at levels 17โ€“20."
      ]
    }
  ]
}