Silvanus is the nature deity. Silvanus was not part of the invader deities, but part of the original pantheon, heavily worshipped by the elves and the other demi human races that have an affinity with nature. He is the only human diety respected by the demi-humans. Tempus tried to remove him but found that he was too strong will to be removed and thwarted plans to have him killed. He married Selune and has two sons, Gond and Tyche.
Druids maintain an order to watch over various parts of the world. Not all druids aspire to this. In order ascending Stewart (one map section) guardian(couple of map sections) Protector(region), Grand Druid(continental) and the heirophant (world)
There may be overlapping responsibilities and the lesser druids do report to the higher ups. The higher a druid rises the more sense of the world that he acquires.