Once every 1d4 rounds, a crag linnorm can expel a 120-foot line of magma, dealing 8d8 fire damage to all creatures struck (Breath save halves). This line of magma remains red-hot for 1 round after the linnorm creates it. Creatures that took damage on the first round take one-half this fire damage the second round (Breath save negates), as does any creature that walks across the line of magma. If the magma was expelled while the linnorm was airborne, it instead rains downward during the second round as a sheet of fire no more than 60 feet high that does half this damage (Breath save negates) to any creature that passes through it. On the third round, the line of magma cools to a thin layer of brittle stone that quickly degrades to powder and sand over the course of several hours; magma that's turned to a sheet of fire is consumed entirely during the second round, leaving behind only a stain of smoke in the air that swiftly disperses.