Choking Clouds cont'd

Stygian Depths — fighters on the highest level
of terrain ignore the effects of Choking Clouds
unless they are making attacks at targets on lower levels.
Sump Sea — fighters either in the sea or level
with it ignore the effects of the Choking Clouds
unless they are making attacks at targets on a
higher level.
Ancient Manufactorum — when a piece of
Industrial Terrain activates the area on and
within 3" of it ceases to be subject to the Choking