Long worms should sometimes generate in areas of sand, carrying a “spice” comestible. If you eat spice, you are granted temporary telepathy, clairvoyance, or both.

Antlion, an a-class monster which has a strong bite, has a holding attack, can hide on sand terrain, and can “drown” you by dragging you into the sand.

Themed room filled with sand which contains either a couple long worms, or baby long worms if regular ones are not appropriate depth yet.