Minimal light (from the moons and stars).
Full fog, visibility 20 feet.
Mid-forest clearings gone, moss on tree trunks, plants are vibrant, 33% extra plants for this level.
Storm, lots of lightning, torrential rain, cool winds.
Rain is falling with rivers full of rapids and many caverns flooded, one level more rain, normal river strength for this level.
Metal and rock unreliable, one level up as far as tensile erosion goes, ground sturdy.
Landscape wounds open.
Normal landscape.
Vines can trap passerbys, 33% more powerful blood moon.