Avalache

Buried.  When an avalanche stops, the snow and other debris bury creatures.  A creature buried this way is blinded and restrained. and it has total cover.  The creature gains 1 level of exhaustion for every 5 minutes buried.  the creature can try to free itself by making a DC 15 strength (athletics) check.  A creature that fails 3 checks can no longer try to free itself.  If the avalanche consists mostly of snow the buried creature takes an additional [roll]4d6[/roll] of cold damage

Engulfed. Anyone caught in its space falls prone and begins to move with the avalanche and becomes engulfed.  Engulfed creatures must make a DC 15 strength saving throw, taking (1d10) [bludgeoning] damage on a failed save or half as much on a successful one. If the avalanche moves off of a sheer cliff anyone engulfed is also subjected to normal falling damage of1d6 bludgeoning per 10 feet fallen.