Made of dark steel by those of an age gone by, this is the last of the giant war golems. Taller than elder dragon is long, this clanking behemoth plods across the land, obliveous to all works of men, elves, or dwarves.
At regular intervals, a god takes control of your world's weather. Choose the gods at random each turn of the interval and begin applying their effects subtly. Their power will depend on the strength of those who worship them.
For civilised people, worship of a god actually wanes during that god's month in an effort to reduce their potential destructive effect.