Rockslide

A clatter of small stones, then the slope decides it has held long enough.

Some Stepland slopes are covered in scree or strewn with boulders — fist-sized, head-sized, some as big as horses. Mostly they stay put. Mostly. A loose stone clatters downhill first, skitter-scatter; a smaller rock smacks someone (d6 damage); a bigger stone teeters and starts to slip; then a whole field gives way (d8+2 damage, area, forceful) and buries victims under tons of rock and dirt.

Kind Environmental or Procedural Threat